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Preclinical Evaluation of 99m Tc-Labeled LHRH Analog as Cancer Receptor Imaging (Completo, 2026)
LUCÍA ALFAYA
, XIMENA CAMACHO
, MIREL CABRERA
, MARCOS TASSANO
, EDUARDO SAVIO
, LAURA REYES
, ANDREA PAOLINO
, MARÍA FERNANDA GARCÍA
, MARCELO FERNÁNDEZ
, JUAN PABLO GAMBINI
, PABLO CABRAL
Oncology (Suiza), v.: 104 p.:381 - 393, 2026
Lugar de publicación: Switzerland
ISSN: 00302414
E-ISSN: 14230232
DOI:
10.1159/000542823 https://doi.org/10.1159/000542823
Introduction: Breast cancer is the main cause of cancer-related mortality in women in the developed world. In particular, receptors of luteinizing hormone-releasing hormone (LHRH or GnRH) are overexpressed in this malignant disease. The aim of this study was to develop a new molecular probe [99mTc]Tc-HYNIC-GSG-LHRH(d-Lys6)/tricine/nicotinic acid (NA) as a novel molecular imaging agent for breast cancer. Methods: HYNIC-GSG-LHRH(D-Lys6) was acquired and radiolabeled with [99mTc]Tc. Radiochemical purity and stability under different conditions were evaluated by instant thin-layer chromatography (ITLC) and high-performance liquid chromatography. Lipophilicity was determined by the partition coefficient test. In vitro cell binding studies were performed in different human and mice breast cancer cell lines (MDA-MB-231, MDA-MB-435, MCF-7, BT474, and 4T1) as well as in normal murine fibroblasts (NIH-3T3) and CHO-K1 as a negative control. Biodistribution studies were performed in normal Balb/c mice and 4T1 tumor-bearing Balb/c mice up to 6 h post-injection (pi). SPECT/CT images were performed in 4T1 tumor-bearing Balb/c mice up to 5 h pi. Results: [99mTc]Tc-HYNIC-GSG-LHRH(d-Lys6)/tricine/NA complex was labeled with a high radiochemical purity (>98%) and remained stable for up to 4 h. It exhibited good hydrophilicity (log p = −2.82 ± 0.04) and also demonstrated significant and specific binding across all evaluated breast cancer cell lines. Biodistribution studies showed a high renal clearance and low nonspecific binding (<2% Act/g) in most organs, as well as appreciable tumor uptake (5.8 ± 0.5 % ID/g 1 h pi) and high tumor-to-muscle ratio (maximum of 30.5 ± 11.2 at 1 h pi). SPECT/CT imaging of 4T1-tumor-bearing Balb/c mice revealed results consistent with the biodistribution studies, showing a tumor-to-non-tumor ratio of greater than 3.5 at all evaluated time points. In vivo blocking studies confirmed specificity for the LHRH receptor. Conclusions: [99mTc]Tc-HYNIC-GSG-LHRH(d-Lys6)/tricine/NA complex has shown significant potential for in vivo visualization of LHRH receptors expression in breast cancer.
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Dosimetría comparativa del anticuerpo monoclonal radiomarcado ¹³¹I-ChiTn en tumores pulmonares murinos tratados con losartán (Completo, 2026)
MARCOS TASSANO
, PABLO CABRAL
SALUD MILITAR, v.: 45 p.:1 2026
Palabras clave:
Dosimetria
E-ISSN: 16880633
DOI:
10.35954/sm2026.45.1.2.e301 https://doi.org/10.35954/sm2026.45.1.2.e301
Resumen
Introducción: la radioinmunoterapia permite administrar radiación ionizante de forma selectiva a células tumorales mediante anticuerpos monoclonales radiomarcados. El anticuerpo quimérico anti-Tn (ChiTn) radiomarcado con ¹³¹I constituye una estrategia potencial para el tratamiento dirigido de tumores que expresan este antígeno.
Objetivo: estimar el efecto del pretratamiento con losartán sobre la distribución de dosis absorbida de ¹³¹I-ChiTn en un modelo murino de tumor pulmonar Tn+.
Metodología: la dosis absorbida fue estimada mediante integración de curvas tiempo-actividad derivadas de datos de biodistribución previamente publicados y aplicación del formalismo MIRD para dosimetría interna.
Resultados: aumento de la captación tumoral del radiofármaco en presencia de losartán, con incremento de la dosis absorbida tumoral de 1.5 a 1.8 mGy/MBq en tumores Tn+, sin incrementos relevantes en la dosis a órganos críticos.
Discusión: estos resultados sugieren que la modulación farmacológica del microambiente tumoral mediante losartán podría mejorar el índice terapéutico de la radioinmunoterapia con ¹³¹I-ChiTn y optimizar la eficacia terapéutica de este radioanticuerpo.
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Microambiente tumoral: influencia en el tratamiento del cáncer (Completo, 2025)
PABLO CABRAL
, XIMENA AIDA CAMACHO DAMATA
SALUD MILITAR, v.: 44 p.:1 - 10, 2025
Palabras clave:
Microambiente tumor Areas de conocimiento:
Ciencias Médicas y de la Salud / Otras Ciencias Médicas /
Otras Ciencias Médicas /
Oncologia
Medio de divulgación: Internet
Lugar de publicación: https://revistasaludmilitar.uy/ojs/index.php/Rsm/article/view/445
E-ISSN: 16880633
DOI:
10.35954/sm2025.44.1.3.e401 https://doi.org/10.35954/sm2025.44.1.3.e401
La presente revisión aborda el microambiente tumoral como un objetivo terapéutico en el tratamiento del cáncer.
Discutimos tanto su composición como su influencia en la progresión y resistencia tumoral; así como también distintas estrategias terapéuticas dirigidas a su modulación.
Comprender las intrincadas interacciones dentro del microambiente tumoral no solo es fundamental para entender la biología del cáncer, sino que también es clave para el futuro de las terapias oncológicas, ofreciendo una nueva esperanza en la lucha contra esta enfermedad devastadora.
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Preclinical Evaluation of 99mTc-Labeled LHRH Analog as Cancer Receptor Imaging (Completo, 2025)
LUCÍA ALFAYA
, XIMENA CAMACHO
, MIREL CABRERA
, MARCOS TASSANO
, EDUARDO SAVIO
, LAURA REYES
, ANDREA PAOLINO
, MARÍA FERNANDA GARCÍA
, MARCELO FERNÁNDEZ
, JUAN PABLO GAMBINI
, PABLO CABRAL
Oncology (Suiza), p.:1 - 13, 2025
Palabras clave:
oncologia
Lugar de publicación: Switzerland
ISSN: 00302414
E-ISSN: 14230232
DOI:
10.1159/000542823 https://doi.org/10.1159/000542823
troduction: Breast cancer is the main cause of cancer-related mortality in women in the developed world. In particular, receptors of luteinizing hormone-releasing hormone (LHRH or GnRH) are overexpressed in this malignant disease. The aim of this study was to develop a new molecular probe [99mTc]Tc-HYNIC-GSG-LHRH(d-Lys6)/tricine/nicotinic acid (NA) as a novel molecular imaging agent for breast cancer. Methods: HYNIC-GSG-LHRH(D-Lys6) was acquired and radiolabeled with [99mTc]Tc. Radiochemical purity and stability under different conditions were evaluated by instant thin-layer chromatography (ITLC) and high-performance liquid chromatography. Lipophilicity was determined by the partition coefficient test. In vitro cell binding studies were performed in different human and mice breast cancer cell lines (MDA-MB-231, MDA-MB-435, MCF-7, BT474, and 4T1) as well as in ?
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Inventario de cesio-137 y plomo-210 en suelos de referencia del centro-oeste de Uruguay: base para estudios de erosión y vigilancia radiológica (Completo, 2025)
MARCOS TASSANO
, PABLO CABRAL
, MIREL CABRERA
INNOTEC, v.: 29 p.:1 - 19, 2025
ISSN: 16883691
E-ISSN: 16886593
DOI:
10.26461/29.06 https://doi.org/10.26461/29.06
This study characterizes inventory levels, concentration, and vertical distribution of ¹³?Cs and ²¹?Pb?? in reference soils across Uruguay, establishing a baseline for future erosion and radiological monitoring studies. Seven sites were analyzed along a climatic gradient from south (Colonia) to north (Rivera). The ¹³?Cs inventories were spatially homogeneous (357.8 ? 365.4 Bq.m?²) and closely matched historical atmospheric deposition records from Buenos Aires, validating these as regional references. Conversely, ²¹?Pb?? inventories (3973 ? 8428 Bq.m?² in the upper 15 cm) strongly correlated with mean annual precipitation (R² = 0.92, p = 0.01). Results indicate ¹³?Cs inventories are stable and suitable as a general reference for erosion studies, whereas local-specific references are necessary for ²¹?Pb?? due to its environmental sensitivity. These findings provide a crucial baseline for assessing future radiological contamination from potential nuclear events in the region.
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Theranostic Radiotracers for Melanoma Imaging and Therapy: A Comparative Study of Subcutaneous and Intradermal Tumor Models Using DOTA-Re-CCMSH Peptides (Completo, 2025)
MIREL CABRERA
, XIMENA CAMACHO
, MARCOS TASSANO
, CAROLINA PERRONI
, MARCELO FERNÁNDEZ
, ANA LAURA REYES
, ANDREA PAOLINO
, EDUARDO SAVIO
, PABLO CABRAL
, JUAN PABLO GAMBINI
Cancer Biotherapy & Radiopharmaceuticals, v.: 40 p.:398 - 409, 2025
Palabras clave:
molecular imaging
Lugar de publicación: United states
ISSN: 10849785
E-ISSN: 15578852
DOI:
10.1089/cbr.2025.0023 https://doi.org/10.1089/cbr.2025.0023
Abstract
Introduction: Melanoma, with its aggressive behavior and high metastatic potential, presents significant clinical challenges. The melanocortin-1 receptor (MC1R) is a promising target for diagnosis and therapy due to its overexpression in metastatic melanoma.
Methods: This study compares the theranostic potential of DOTARe-CCMSH, labeled with 68Ga and 177Lu, in subcutaneous and intradermal murine melanoma models over an extended period. Radiolabeling achieved high molar activities for both isotopes, enabling precise imaging and therapeutic applications.
Results: PET imaging with [68Ga]Ga-DOTA-Re-CCMSH showed specific tumor accumulation, with a mean uptake of 2.25 ± 0.2% ID/g at 2 hours post-injection, enhanced by gelofusine pre-administration. SPECT imaging with [177Lu]LuDOTA-Re-CCMSH revealed significant and sustained tumor uptake in both models, with mean values of 21.9 ± 7.98 for subcutaneous and 19.8 ± 5.36 for intradermal tumors at 4 hours post-injection, extending up to 24 hours. This study tracked the therapeutic radiotracer uptake for up to 7 days post-injection, showing continued retention and tumor specificity, especially in the tumor-to muscle ratio, which reached 172 at 24 hours.
Discussion and Conclusions: Comparative biodistribution analyses highlighted differences between subcutaneous and intradermal models, including distinct peritumoral edema arrangements. These findings emphasize the value of long-term theranostic studies in understanding tumor behavior and the efficacy of radiolabeled peptides in melanoma treatment, advancing personalized oncology approaches.
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Molecular recognition of halogen-bond of Diiodine with an Ambidentate ligand: Fluorometry as lead strategy for analysis in solution (Completo, 2025)
LOURDES A. GOTOPO
, JORGE A. GÜIDA
, GUSTAVO ECHEVERRÍA
, OSCAR E. PIRO
, IVAN E. ROMERO
, ROMINA CASTELLI
, GUSTAVO CABRERA
, PABLO CABRAL
, HUGO E. CERECETTO
, ANGEL H. ROMERO
Journal of Molecular Structure, v.: 1322 p.:140320 2025
Palabras clave:
Fluorometry
Lugar de publicación: Netherlands
ISSN: 00222860
E-ISSN: 18728014
DOI:
10.1016/j.molstruc.2024.140320 https://doi.org/10.1016/j.molstruc.2024.140320
Abstract
Chemical connectivity of halogen bond (XB) of the diiodine with an ambidentate ligand of the N1-aryl-2-(trifluoromethyl)benzo[b][1,8]naphthyridin-4(1H)-one in solution and in solid state was presented. The organic ligand was characterized by featuring four basic moieties with different hardness (N-heteroarene, ketonic oxygen, methoxy oxygen and ?-arene). The study in solution was performed through a simple steady state fluorescence measurements taking advantage on the use of a donor-acceptor (D-A) fluorophore having two key characteristics (i) presence of basic groups along the d-A chain and, (ii) a fluorescence dependent on an intramolecular charge-transfer (ICT) mechanism. It allowed us to distinguish unequivocally the binding preference of the ambidentate ligand toward the diiodine from the recognition of specific dye-fluorescence responses (ICT-quenching, ICT-enhancement, etc.). Fluorometric studies allowed us to elucidate that the diiodine interacts dominantly through the borderline function (N-heteroarene) of ligand under a wide range of diiodine concentration and discretely through the harder ketonic oxygen. UV?Vis spectroscopic confirmed the binding of the diiodine through N-arene moiety, giving typical association constants of 20?40 M-1 for the tested ambidentate ligands. Additionally, the fluorometry allowed us to verify the reversibility of the XB in solution through synchronized radioactivity- and absorption-fluorescence experiments based on nuclear and chemical decomposition of the diiodine, respectively, where the total recovery of the ICT-fluorescence, which was quenched under diiodine binding, confirmed the reversibility of the XB. Further studies in solid state (Raman spectroscopy) confirmed the binding preference of the diiodine toward the borderline N-arene. Experimental evidences of XB were supported and interpreted from DFT-calculations.
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Enhanced Tumor Targeting of Radiolabeled Mouse/Human Chimeric Anti-Tn Antibody in Losartan-Treated Mice Bearing Tn-Expressing Lung Tumors (Completo, 2024)
MARCOS TASSANO
, XIMENA CAMACHO
, TERESA FREIRE
, CAROLINA PERRONI
, VALERIA DA COSTA
, MIREL CABRERA
, MARIA FERNANDA GARCÍA
, MARCELO FERNANDEZ
, JUAN PABLO GAMBINI
, PABLO CABRAL
, EDUARDO OSINAGA
Cancer Biotherapy & Radiopharmaceuticals, 2024
Palabras clave:
cancer imaging Areas de conocimiento:
Ciencias Médicas y de la Salud / Otras Ciencias Médicas /
Otras Ciencias Médicas /
Imagen molecular
Lugar de publicación: United states
ISSN: 10849785
E-ISSN: 15578852
DOI:
10.1089/cbr.2023.0138 http://dx.doi.org/10.1089/cbr.2023.0138
Abstract
Aim: ChiTn, a mouse/human chimeric anti-Tn monoclonal antibody, was radiolabeled with iodine-131 (131I) and technetium-99m (99mTc) to assess its biodistribution and internalization in Tn-expressing (Tn+) and wild-type (Tn-) LL/2 lung cancer cells.
Results: Selective accumulation and gradual internalization of ChiTn were observed in Tn+ cells. Biodistribution in mice with both Tn+ or Tn? lung tumors indicated that the uptake of radiolabeled ChiTn within tumors increased over time. Dual-labeling experiments with 99mTc and 131I showed different biodistribution patterns, with 99mTc exhibiting higher values in the liver, spleen, and kidneys, while 131I showed higher uptake in the thyroid and stomach. However, tumor uptake did not significantly differ between Tn+ and Tn? tumors. To improve tumor targeting, Losartan, an antihypertensive drug known to enhance tumor perfusion and drug delivery, was investigated. Biodistribution studies in Losartan-treated mice revealed significantly higher radiolabeled ChiTn uptake in Tn+ tumors. No significant changes were observed in the uptake of the control molecule IgG-HYNIC-99mTc.Conclusions: These findings demonstrate the enhanced tumor targeting of radiolabeled ChiTn in Losartan-treated mice with Tn-expressing lung tumors. They highlight the potential of ChiTn as a theranostic agent for cancer treatment and emphasize the importance of Losartan as an adjunctive treatment to improve tumor perfusion and drug delivery.
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Molecular Imaging of Melanoma VEGF-expressing Tumors through [99mTc]Tc-HYNIC-Fab(Bevacizumab) (Completo, 2024)
XIMENA CAMACHO
, CAROLINA PERRONI
, LUCÍA ALFAYA
, MIREL CABRERA
, MARCOS TASSANO
, MARÍA FERNANDA GARCÍA
, MARCELO FERNÁNDEZ
, ANA LAURA REYES
, ANDREA PAOLINO
, EDUARDO SAVIO
, HUGO CERECETTO
, PABLO CABRAL
, JUAN PABLO GAMBINI
Anti-Cancer Agents in Medicinal Chemistry, v.: 24 p.:1347 - 1359, 2024
Palabras clave:
oncologia
Lugar de publicación: United arab emirates
ISSN: 18715206
DOI:
10.2174/0118715206294297240805073550 https://doi.org/10.2174/0118715206294297240805073550
Angiogenesis is a process that many tumors depend on for growth, development, and metastasis. Vascular endothelial growth factor (VEGF) is one of the major players in tumor angiogenesis in several tumor types, including melanoma. VEGF inhibition is achieved by bevacizumab, a humanized monoclonal antibody that binds with high affinity to VEGF and prevents its function. In order to successfully enable in vivo VEGF expression imaging in a murine melanoma model, we previously labeled bevacizumab with [99mTc]Tc. We observed that this was feasible, but it had prolonged blood circulation and delayed tumor uptake.
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Fortaleciendo la conexión entre los niveles de atención para una salud económicamente sostenible (Completo, 2024)
PABLO CABRAL
SALUD MILITAR, v.: 43 p.:1 - 1, 2024
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Radiofarmacia
Ingeniería y Tecnología / Nanotecnología /
Nano-materiales /
Nanotecnologia Farmaceutica
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Radiofarmacia , Radioquimica
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
tecnologia Farmaceutica
Ingeniería y Tecnología / Nanotecnología /
Nano-procesamiento /
Nanotecnologia aplicada a Alimentos
E-ISSN: 16880633
DOI:
10.35954/sm2024.43.1.1.e101 https://doi.org/10.35954/sm2024.43.1.1.e101
En el dinámico panorama de la atención sanitaria, la interacción entre los diferentes niveles de atención -primario, secundario y terciario- juega un papel crucial en la configuración de un sistema de salud eficiente y económicamente sostenible. La sinergia es esencial entre el primer nivel de atención y los niveles superiores y cómo esta interacción puede ser la clave para un futuro más prometedor en el ámbito de la salud. El primer nivel de atención, el más accesible para la población, sirve como la primera línea de de- fensa en la salud pública. Su rol en la prevención, el diagnóstico temprano y el manejo de enfermedades crónicas es insustituible. Sin embargo, su eficacia se ve limitada si no existe una colaboración efectiva con los niveles superiores de atención, donde se manejan casos más complejos y se dispone de tecnolo- gías avanzadas. Una relación bien estructurada entre estos niveles puede resultar en una atención más coordinada y menos fragmentada, beneficiando no solo a los pacientes sino también al sistema de salud en su conjunto. La referencia y contrarreferencia efectiva entre los distintos niveles asegura una atención continua y reduce la duplicidad en los servicios, llevando a una mayor eficiencia en el uso de recursos. Además, en una era donde la sostenibilidad económica es primordial, la colaboración entre niveles puede disminuir costos significativamente. Por ejemplo, la gestión adecuada de enfermedades crónicas en el primer nivel puede prevenir complicaciones que requieren intervenciones costosas en niveles superiores. Asimismo, la especialización y el uso de tecnología de punta en los niveles terciario y cuaternario deben estar bien justificados y reservados para casos que realmente los necesiten. La educación y capaci- tación continua de los profesionales de la salud en todos los niveles es fundamental para facilitar esta interacción. De igual manera, la implementación de sistemas de información integrados puede mejorar la comunicación y el intercambio de datos entre los diferentes niveles, contribuyendo a una atención más informada y coordinada. En conclusión, la relación entre el primer nivel de atención y los niveles superiores es una piedra angular para lograr un sistema de salud que no solo sea clínicamente efectivo, sino también económicamente sostenible. Es momento de reforzar esta conexión, invirtiendo en la integración y colaboración entre los diferentes niveles de atención para construir un futuro más saludable y equitativo.
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Design and development of 6-hydrazinonicotinyl-fatty acid-mimetic 99mTc-complex as a potential myocardial imaging agent (Completo, 2024)
JOEL GONZÁLEZ
, MARÍA FERNANDA GARCÍA
, PABLO CABRAL
, VICTORIA CALZADA
, HUGO CERECETTO
Brazilian Journal of Pharmaceutical Sciences, v.: 60 p.:1 2024
Lugar de publicación: Brazil
E-ISSN: 21759790
DOI:
10.1590/s2175-97902024e23542 https://doi.org/10.1590/s2175-97902024e23542
Abstract
The goal of this work is to identify new fatty acid-mimetic 99mTc-complexes to be used as myocardial imaging agents that allow studying heart abnormalities in high-risk patients. In this sense, we designed a fatty acid-mimetic substructure including an amide moiety that, among other properties, could improve myocardial residence time. A diamide with a chain length of 15 atoms and porting a 6-hydrazinonicotinyl (HYNIC) chelator, and an analog with a short carbon-chain, were prepared with convergent organic synthetic procedures and radiolabeled with 99mTc using tricine as the sole coligand. The in vivo proofs of concept were performed using healthy mice. The new 99mTc-complexes were obtained with adequate radiochemical purity. The lipophilicities were in agreement with the length of the chains. While both 99mTc-complexes showed uptake in the myocardial muscle, the designed radiopharmaceutical with the longest chain length had preferential target-uptake and target-retention compared to other complexes described in the bibliography. Further studies, involving imaging assays, synthetic modifications, and assay of new coligands for 99mTc-HYNIC complexes, are currently ongoing.
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Indocyanine green within glycosylated polymeric micelles as potential image agents to map sentinel lymph nodes and breast cancer (Completo, 2024)
NICOLE LECOT
, MARCELO FERNÁNDEZ-LOMÓNACO
, HUGO CERECETTO
, JUAN PABLO GAMBINI
, PABLO CABRAL
, ROMINA GLISONI
RSC Pharmaceutics, v.: 1 p.:57 - 67, 2024
E-ISSN: 29768713
DOI:
10.1039/d3pm00053b https://doi.org/10.1039/d3pm00053b
Indocyanine green (ICG) is an FDA-approved near-infrared (NIR) dye used as a contrast agent for medical diagnosis in such techniques as image-guided surgery (IGS) and IGS-supported mapping for sentinel lymph node biopsy (SNLB). However, there are numerous disadvantages to its use in clinical applications: (i) self-aggregation in solution, (ii) poor targeting and (iii) short half-life in vivo, due to the rapid uptake by the liver. Herein, to overcome these obstacles, we utilized polymeric micelles (PMs) based on the amphiphilic linear and branched block poly(ethylene oxide)?poly(propylene oxide) (PEO?PPO) copolymers (Pluronic® and Tetronic®) for ICG stabilization, vehicleization and to directionally target breast cancer tissues. Because of their singular properties, PMs offer several advantages such as the ability to modify their surfaces with a variety of receptor-targeting ligands and their nano-scale size, which is suitable for taking advantage of the enhanced permeability and retention (EPR) effect for cancer diagnosis. In this work, we prepared ICG within pristine F127 and T1307 and their glucosylated derivatives (F127-Glu and T1307-Glu, respectively). These systems have a sub-30 nm-nanosized hydrodynamic diameter (19?27 nm), moderate negative Z-potentials (until ?10 mV), and satisfactory stability in water even after lyophilisation and reconstitution, at 25 and 37 °C, respectively. Particularly, ICG within T1307-Glu PMs displayed maximum solubility and excellent encapsulation efficiency (100%), with a potentially large in vivo uptake according to high specificity and efficacious capture in lymph nodes (LNs) and tumors. All the results presented in this work, indicate that ICG-loaded PMs can potentially be used as image probe agents for IGS, SLNB and breast cancer imaging.
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Agriculture expansion in the South American Pampa grassland led to an inexorable increase in land degradation (1982-2019) (Completo, 2023)Trabajo relevante
Marcos Tassano
, Pierre-Alexis Chaboche
, Guillermo Chalar
, Mirel Cabrera
, Joel Gonzalez
, P. CABRAL
, Anne-Catherine Simon
, Mathieu Agelou
, Rafael Ramon
, Tales Tiecher
, Olivier Evrard
Nature Sustainability, 2023
Areas de conocimiento:
Ciencias Agrícolas / Otras Ciencias Agrícolas /
Otras Ciencias Agrícolas /
Suelos
Medio de divulgación: Internet
E-ISSN: 23989629
https://mts-natsustain.nature.com/
From 1985 onwards, South America in general and Uruguay in particular have undergone a major expansion of agriculture at the expense of native vegetation (e.g. native Pampa grassland). As an emblematic crop, the surface area cultivated with soybeans has increased by 1000% between 1990 and 2020 in Uruguay. The environmental consequences of this massive land use conversion on soil degradation remain poorly documented although the agriculture expansion is projected to continue to increase in the coming years in South America. In this study, sediment cores were collected in reservoirs located downstream of two contrasted agricultural catchments (Palmar (PA) and Rinc?n del Bonete (RDB)) drained by the Rio Negro River (Uruguay) for reconstructing the sediment dynamics and the sources of erosion associated with this expansion.
Results demonstrated the occurrence of two periods of acceleration of sediment delivery since the 1980s. The first period of acceleration was recorded in the mid-1990s and was related to afforestation programs. The second and larger acceleration phase was recorded after 2000 during the soybean crop expansion. This period has been marked by a greater supply of sediment from the native grassland source highlighting the impact of agriculture expansion at the expense of native vegetation and its widespread consequences on land degradation. Within a few years, human activities have induced a dramatic and widespread transformation of ecosystems in Uruguay. Beyond the direct consequences on biodiversity, this modern agricultural conversion has strongly impacted the sediment cascade affecting soil and water resources.
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Using 137Cs and 210Pbex to assess soil redistribution at different temporal scales along with lithogenic radionuclides to evaluate contrasted watersheds in the Uruguayan Pampa grassland (Completo, 2023)
MIREL CABRERA
, ROMINA SANABRIA
, JOAN GONZÁLEZ
, PABLO CABRAL
, SAMUEL TEJEDA
, GRACIELA ZARAZUA
, EVA MELGAR-PANIAGUA
, MARCOS TASSANO
Geoderma, v.: 435 p.:116502 2023
Palabras clave:
radionucleidos ambientales 210Pbex 137Cs
Lugar de publicación: Netherlands
ISSN: 00167061
DOI:
10.1016/j.geoderma.2023.116502 http://dx.doi.org/10.1016/j.geoderma.2023.116502
The use of environmental radionuclides in soil monitoring has made it possible to establish erosion rates. The combined use of 137Cs and 210Pbex is a common approach for determining mean annual erosion rates retrospectively in two different time windows; 137Cs in the past 50?60 years whereas 210Pbex provide a longer period up to 100 years. However, these radionuclides have contrasting sensitive behaviors, 210Pbex is able to be more sensitive to recent redistribution events of its last period of disintegration (22.3 yr) than 137Cs, being more sensitive to the past erosion and depositional events.
This work studies soil redistribution rates at different temporal scales and the variability of lithogenic radionuclides by contrasting two watersheds with different land uses. The watersheds are Arroyo del Arbolito (AAW) and Cañada del Horno (CHW), both located near the Baygorria hydroelectric dam reservoir in Uruguay. Erosion rates obtained with 137Cs and 210Pbex using the MODERN conversion model for both watersheds showed that there are no significant differences for 210Pbex estimates, which suggests that the land management practices for both watersheds in the last twenty years do not differ and the erosion rates remained the same as the earlier period. However, significant differences were found for erosion estimated by using 137Cs in CHW vs AAW (p ? 0.05) and cultivated vs. natural pasture (p ? 0.001), which indicates that the main erosion events occurred further in the past. Furthermore, these changes in erosion estimated using both isotopes coincide with changes in land use and land management, from tillage-based practices in the past to the predominance of no-tillage since the early 2000 s. This change in soil management resulted in a reduction of approximately 50% in soil loss in those cultivated areas since 1965. In AAW, 51.7 % of the sampled points exceeded the tolerable erosion rate (7 Mg.ha?1.yr?1) estimated using 137Cs, whereas for 210Pbex, 37 % of the sampled points exceeded this limit. For CHW, 63.6 % of the sampled points exceeded the tolerable erosion limit (9 Mg.ha?1.yr?1) estimated by using 137Cs, whereas for 210Pbex, 34.2 % exceeded this limit. Our results suggest that the variation of lithogenic radionuclides by erosion is dependent on soil type and erosion magnitude. This study, which describes the use of two fallout soil radiotracers, provides new insights into the impact of land use conversion on soil degradation in the Pampas grassland ecosystem.
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La importancia de la evaluación de tecnologías sanitarias: estado del arte. (Completo, 2023)
PABLO CABRAL
, CAMILA JOAQUINA GONZÁLEZ
, MAITE INTHAMOUSSU
SALUD MILITAR, v.: 42 p.:801 2023
Palabras clave:
Evaluacion de tecnologias sanitarias
Medio de divulgación: Internet
E-ISSN: 16880633
DOI:
10.35954/sm2023.42.1.8.e801 http://dx.doi.org/10.35954/sm2023.42.1.8.e801
En un contexto de atención médica en constante evolución, la evaluación de tecnologías sanitarias se ha vuelto esencial. Este proceso evalúa la efectividad, seguridad y costo-efectividad de las tecnologías médicas, desde medicamentos hasta dispositivos. La evaluación respalda decisiones clínicas informadas, reduciendo la variabilidad en la práctica y mejorando la atención al paciente. Además, desempeña un papel crucial en las políticas de salud al guiar la asignación eficiente de recursos y promover el acceso equitativo a las tecnologías sanitarias.
Como conclusión se puede decir que la evaluación de tecnologías sanitarias es esencial para garantizar sistemas de salud sostenibles y una atención de calidad.
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99mTc-HYNIC/Cy7-Fab(Bevacizumab): su empleo como agente de imagen en mieloma múltiple (Completo, 2023)
XIMENA CAMACHO
, CAROLINA PERRONI
, MIREL CABRERA
, MARCOS TASSANO
, CAMILA LONGO MACHADO
, CAMILA DE GODOI CARNEIRO
, MARA DE SOUZA JUNQUEIRA
, DANIELE FARIA
, MARÍA FERNANDA GARCÍA
, MARCELO FERNÁNDEZ
, CARLOS BUCHPIGUEL
, HUGO CERECETTO
, ROGER CHAMAS
, ELOISA RIVA
, JUAN PABLO GAMBINI
, PABLO CABRAL
SALUD MILITAR, v.: 42 p.:302 2023
Palabras clave:
imagen molecular
Medio de divulgación: Internet
E-ISSN: 16880633
DOI:
10.35954/sm2023.42.1.4.e302 http://dx.doi.org/10.35954/sm2023.42.1.4.e302
Introducción: el mieloma múltiple es un trastorno hematológico maligno y el segundo cáncer de la sangre más frecuente. El proceso de la angiogénesis tumoral es fundamental para el crecimiento y metástasis de muchos tipos de tumores, incluido en mieloma múltiple. Se sabe que la sobreexpresión del factor de crecimiento endothelial vascular se encuentra asociado a un mal pronóstico en esta patología, representando un blanco clave para la terapia anti-angiogénica en mieloma múltiple. El anticuerpo monoclonal Bevacizumab es capaz de unirse con gran afinidad al factor de crecimiento endothelial vascular bloqueando su acción.
Objetivo: evaluar el Fab(Bevacizumab) marcado con 99mTc o Cy7 como potenciales agentes de imagen moleculares de la expresión de factor de crecimiento endothelial vascular en mieloma múltiple.
Material y métodos: la expresión de factor de crecimiento endothelial vascular fue analizada mediante citometría de flujo en la línea celular huaman de mieloma múltiple, la MM1S. Fab(Bevacizumab) fue producido mediante digestión de Bevacizumab con papaína, conjugado a NHS-HYNIC-Tfa y radiomarcado con 99mTc. Se realizaron estudios de biodistribución y de tomografía computarizada por emisión del fotón simple. A su vez, Fab(Bevacizumab) fue marcado con Cy7 para obtener imágenes de fluorescencia in vivo hasta 96 horas.
Resultados: el análisis por citometría de flujo en la línea celular MM1S reveló que la expresión de factor de crecimiento endothelial vascular es predominantemente intracelular. Los estudios de biodistribución y SPECT/CT del complejo 99mTc-HYNIC-Fab(Bevacizumab) mostraron una rápida eliminación sanguínea y una significativa captación a nivel renal y tumoral. Las imágenes por fluorescencia empleando Cy7-Fab(Bevacizumab) permitieron la visualización tumoral hasta 96 h p.i.
Conclusiones: logramos visualizar la expresión de factor de crecimiento endothelial vascular in vivo en mieloma múltiple mediante el empleo del fragmento Fab del anticuerpo anti-VEGF (Bevacizumab) marcado con 99mTc y Cy7. Estos nuevos agentes de imagen molecular podrían ser empleados potencialmente en el ámbito clínico para la estadificación y el seguimiento de pacientes con mieloma múltiple, mediante la visualización radioactiva in vivo de la expresión de factor de crecimiento endothelial vascular en todo el cuerpo. La imagen óptica de estos trazadores mejoraría el muestreo tumoral y podría guiar la extirpación quirúrgica.
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240Pu/239Pu signatures allow refining the chronology of radionuclide fallout in South America (Completo, 2022)
PIERRE-ALEXIS CHABOCHE
, FABIEN POINTURIER
, PIERRE SABATIER
, ANTHONY FOUCHER
, TALES TIECHER
, JEAN P.G. MINELLA
, MARCOS TASSANO
, AMÉLIE HUBERT
, SERGIO MORERA
, STÉPHANE GUÉDRON
, CHRISTOPHE ARDOIS
, BÉATRICE BOULET
, CATHERINE COSSONNET
, PABLO CABRAL
, MIREL CABRERA
, GUILLERMO CHALAR
, OLIVIER EVRARD
Science of the Total Environment, v.: 843 p.:156943 2022
Palabras clave:
240Pu/239Pu Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias de la Tierra y relacionadas con el Medio Ambiente /
Geociencias multidisciplinaria /
Lugar de publicación: Netherlands
ISSN: 00489697
E-ISSN: 18791026
DOI:
10.1016/j.scitotenv.2022.156943 http://dx.doi.org/10.1016/j.scitotenv.2022.156943
Atmospheric nuclear tests (1945?1980) have led to radioactive fallout across the globe. French tests in Polynesia (1966?1974) may influence the signature of fallout in South America in addition to those conducted by USA and former USSR until 1963 in the Northern hemisphere. Here, we compiled the 240Pu/239Pu atom ratios reported for soils of South America and conducted additional measurements to examine their latitudinal distributions across this continent. Significantly lower ratio values were found in the 20?45° latitudinal band (0.04 to 0.13) compared to the rest of the continent (up to 0.20) and attributed to the contribution of the French atmospheric tests to the ultra-trace plutonium levels found in these soils. Based on sediment cores collected in lakes of Chile and Uruguay, we show the added value of measuring 240Pu/239Pu atom ratios to refine the age models of environmental archives in this region of ?
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Development of fluorescent- and radio-traceable T1307-polymeric micelles as biomedical agents for cancer diagnosis: biodistribution on 4T1 tumor-bearing mice (Completo, 2022)
NICOLE LECOT
, GONZALO RODRÍGUEZ
, VALENTINA STANCOV
, MARCELO FERNÁNDEZ
, MERCEDES GONZÁLEZ
, ROMINA J. GLISONI
, PABLO CABRAL
, HUGO CERECETTO
Brazilian Journal of Pharmaceutical Sciences, v.: 58 2022
Palabras clave:
nanomedicina
Lugar de publicación: Brazil
E-ISSN: 21759790
DOI:
10.1590/s2175-97902022e191055 http://dx.doi.org/10.1590/s2175-97902022e191055
In recent years, nanocarriers have been studied as promising pharmaceutical tools for controlled drug-delivery, treatment-efficacy follow-up and disease imaging. Among them, X-shaped amphiphilic polymeric micelles (Tetronic®, poloxamines) display great potential due to their biocompatibility and non-toxic effects, among others. In the present work, polymeric micelles based on the T1307 copolymer were initially decorated with a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-fluorophore in order to determinate its in vivo biodistribution on 4T1 tumor-bearing mice. However, unfavorable results with this probe led to two different strategies. On the one hand, the BODIPY-micelle-loaded, L-T1307-BODIPY, and on the other hand, the 99mTc-micelle-radiolabeled, L-T1307- 99m Tc, were analyzed separately in vivo. The results indicated that T1307 accumulates mainly in the stomach, the kidneys, the lungs and the tumor, reaching the maximum organ-accumulation 2 hours after intravenous injection. Additionally, and according to the results obtained for L-T1307- 99m Tc, the capture of the polymeric micelles in organs could be observed up to 24 hours after injection. The results obtained in this work were promising towards the development of new radiotracer agents for breast cancer based on X-shaped polymeric micelles.
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99mTc-HYNIC-LHRH analogue as a novel prostate cancer imaging agent (Resumen, 2022)
Lucia Alfaya
, Marcos Tassano
, X Camacho
, Mirel Cabrera
, A Reyes
, A Paolino
, : Savio
, P Duarte
, P. CABRAL
, J P Gambini
Journal of Nuclear Medicine, v.: 63 supplement 2 , p.:4059 2022
Palabras clave:
Imagen Molecular prostata cancer Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagenologia Molecular
Medio de divulgación: Internet
ISSN: 01615505
E-ISSN: 2159662X
https://jnm.snmjournals.org/content/63/supplement_2/4059/tab-article-info
Prostate cancer (PC) is the most common cancer in men in the world. In America about 1 man in 8 will be diagnosed with prostate cancer during his lifetime. The average age of men at diagnosis is about 66 yo. Hormone therapy for prostate cancer can block the production or use of androgens. Luteinizing hormone-releasing hormone (LHRH) agonists, prevent the pituitary gland from secreting luteinizing hormone (LH). LH acts on specific cells in the testes to produce the majority of testosterone in the body. In this way LHRH decreases the amount of testosterone secreted by the testes. It is important to decrease testosterone level because once it binds to androgen receptors in PC cells stimulating the expression of specific genes that cause PC to grow. Also it must be noted that receptors for LH-RH are found on most PC cells and these receptors persisted despite prolonged exposure to LH-RH agonists.
Up to 70% of PC are androgen-dependent at the time of diagnostic, and therefore treated with androgenic therapy. At the moment, there are no 99mTc-based radiotracers that target LHRH for PC diagnosis and treatment monitoring. Our aim was to develop and evaluate a 99mTc radiolabeled HYNIC-GSG-(DLys6)-LHRH analogue as a novel PC imaging agent.
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Indocyanine green fluorescence-guided parathyroidectomy. Our Experience. (Resumen, 2022)
Luisa Fabiola Portugal
, Escalante, Enzo
, Silvera, Juan Hermida
, Omar Alonso
, M Cabrera
, M Tassano
, Guang-Zhong Yang,
, Thomas Quinn
, Pablo Duarte
, P. CABRAL
, JP Gambini
Journal of Nuclear Medicine, v.: 63 p.:2800 - 2800, 2022
Palabras clave:
ICG Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagen Molecular
Medio de divulgación: Internet
E-ISSN: 2159662X
Introduction:
The surgical success of parathyroid surgery for primary (PHP) or secondary (SHP) hyperparathyroidism may be limited by the location of the glands or their difficult access, mainly in previously operated necks. The introduction of new molecular imaging techniques with the incorporation of fluorescent tracers such as indocyanine green (ICG) and near-infrared (NIR) imaging has proven useful in detecting the parathyroid glands (1,2). The aim of this study is to describe our experience with ICG in the intraoperative location of the parathyroid glands.
Methods:
The intraoperative identification of parathyroid tissue using ICG is based on the intravenous administration of 7.5mg (3ml) as a bolus at the moment of wanting to visualize the glands. ICG is distributed systemically and by mechanisms not yet understood it accumulates at the parathyroid and thyroid tissue level, not in muscle, fat or lymph nodes ?
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68Ga-: 99mTc-labeled LHRH analog as new potential breast cancer imaging agents (Completo, 2022)
LUCIA ALFAYA
, XIMENA CAMACHO
, MARCOS TASSANO
, MIREL CABRERA
, ANA REYES
, ANDREA PAOLINO
, MARIA GARCÍA MELIÁN
, MARCELO FERNANDEZ
, EDUARDO SAVIO
, PABLO DUARTE
, JUAN GAMBINI
, PABLO CARBAL
Nuclear Medicine and Biology, v.: 114-115 p.:49 2022
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagen Molecular
Lugar de publicación: Netherlands
ISSN: 09698051
DOI:
10.1016/s0969-8051(22)02190-4 http://dx.doi.org/10.1016/s0969-8051(22)02190-4
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Development and Evaluation of 2-Amino-7-Fluorophenazine 5,10-Dioxide Polymeric Micelles as Antitumoral Agents for 4T1 Breast Cancer (Completo, 2022)
NICOLE LECOT
, BELÉN DÁVILA
, CARINA SÁNCHEZ
, MARCELO FERNÁNDEZ
, MERCEDES GONZÁLEZ
, PABLO CABRAL
, HUGO CERECETTO
, ROMINA GLISONI
Polymers, v.: 14 p.:71 2022
Palabras clave:
Bioreductive-drug
Lugar de publicación: Switzerland
E-ISSN: 20734360
DOI:
10.3390/polym14010071 http://dx.doi.org/10.3390/polym14010071
2-Amino-7-fluorophenazine 5,10-dioxide (FNZ) is a bioreducible prodrug, poorly soluble in water, with potential anticancer activity on hypoxic-tumors. This poor solubility limits its potential applications in clinic. Amphiphilic pristine polymeric micelles (PMs) based on triblock copolymers Pluronic® and Tetronic®, glycosylated derivatives and their mixtures with preformed-liposomes (LPS), were analyzed as strategies to improve the bioavailability of FNZ. FNZ encapsulations were performed and the obtaining nanostructures were characterized using UV-visible spectroscopy (UV-VIS), Transmission Electron Microscopy (TEM) and Dynamic Light Scattering (DLS). The most promising nanoformulations were analyzed for their potential toxicity and pharmacologically, at 20 mg/kg FNZ-doses, in a stage-IV murine metastatic-breast tumor model. The results revealed that the solubility of the encapsulated-FNZ increased up to 14 times and the analysis (UV-VIS, DLS and TEM) confirmed the interaction between vehicles and FNZ. In all the cases appropriate encapsulation efficiencies (greater than 75%), monodisperse nanometric particle sizes (PDI = 0.180?0.335), adequate Z-potentials (?1.59 to ?26.4 mV), stabilities and spherical morphologies were obtained. The in vitro profile of FNZ controlled releases corresponded mainly to a kinetic Higuchi model. The in vitro/in vivo biological studies revealed non-toxicity and relevant tumor-weight diminution (up to 61%).
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T908 Polymeric Micelles Improved the Uptake of Sgc8-c Aptamer Probe in Tumor-Bearing Mice: A Co-Association Study between the Probe and Preformed Nanostructures (Completo, 2022)
ROMINA CASTELLI
, MANUEL IBARRA
, RICARDO FACCIO
, IRIS MIRABALLES
, MARCELO FERNÁNDEZ
, ALBERTINA MOGLIONI
, PABLO CABRAL
, HUGO CERECETTO
, ROMINA J. GLISONI
, VICTORIA CALZADA
Pharmaceuticals, v.: 15 p.:15 2022
Palabras clave:
Sgc8-c aptame probe Polymeric micelles Liposomes Active targeting
Medio de divulgación: Internet
Lugar de publicación: Switzerland
E-ISSN: 14248247
DOI:
10.3390/ph15010015 http://dx.doi.org/10.3390/ph15010015
Aptamers are oligonucleotides that have the characteristic of recognizing a target with high affinity and specificity. Based on our previous studies, the aptamer probe Sgc8-c-Alexa647 is a promising tool for molecular imaging of PTK7, which is an interesting biomarker in cancer. In order to improve the delivery of this probe as well as create a novel drug delivery nanosystem targeted to the PTK7 receptor, we evaluate the co-association between the probe and preformed nanostructures. In this work, preformed pegylated liposomes (PPL) and linear and branched pristine polymeric micelles (PMs), based on PEO?PPO?PEO triblock copolymers were used: poloxamer F127® and poloxamines T1307® and T908®. For it, Sgc8-c-Alexa647 and its co-association with the different nanostructures was exhaustively analyzed. DLS analysis showed nanometric sizes, and TEM and AFM showed notable differences between free- and co-associated probe. Likewise, all nanosystems were evaluated on A20 lymphoma cell line overexpressing PTK7, and the confocal microscopy images showed distinctness in cellular uptake. Finally, the biodistribution in BALB/c mice bearing lymphoma-tumor and pharmacokinetic study revealed an encouraging profile for T908-probe. All data obtained from this work suggested that PMs and, more specifically T908 ones, are good candidates to improve the pharmacokinetics and the tumor uptake of aptamer-based probes.
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Spatial cross-correlation between physicochemical and microbiological variables at superficial soil with different levels of degradation (Completo, 2021)
MARCOS TASSANO
, ADRIANA MONTAÑEZ
, LUCIA NUÑEZ
, TANIA TRASANTE
, JOAN GONZÁLEZ
, JOAQUÍN IRIGOYEN
, PABLO CABRAL
, MIREL CABRERA
CATENA, v.: 198 p.:105000 2021
Lugar de publicación: Netherlands
ISSN: 03418162
DOI:
10.1016/j.catena.2020.105000 http://dx.doi.org/10.1016/j.catena.2020.105000
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Radio? and Fluorescent?Labeling of Rituximab Based on the Inverse Electron Demand Diels?Alder Reaction (Completo, 2021)
PABLO CABRAL
, MARÍA FERNANDA GARCÍA
, MARA SOUZA JUNQUEIRA
, JANIO SILVA MORORÓ
, XIMENA CAMACHO
, DANIELE PAULA FARIA
, CAMILA GODOI CARNEIRO
, FABIO GALLAZZI
, ROGER CHAMMAS
, THOMAS QUINN
, HUGO CERECETTO
ChemistrySelect, v.: 6 p.:1894 - 1899, 2021
Lugar de publicación: United kingdom
E-ISSN: 23656549
DOI:
10.1002/slct.202100042 http://dx.doi.org/10.1002/slct.202100042
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99mTc Stearyl 6-(benzylidenehydrazinyl) nicotinamide Liposomes as Tumor Permeability Evaluation Tracer (Completo, 2021)
PABLO CABRAL
, MIREL CABRERA
, NICOLE LECOT
, MARCELO FERNÁNDEZ
, J. P. GAMBINI
, WILLIAMS PORCAL
AAPS PharmSciTech, v.: 22 2021
Lugar de publicación: United states
E-ISSN: 15309932
DOI:
10.1208/s12249-021-01984-1 http://dx.doi.org/10.1208/s12249-021-01984-1
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Mapping the spatial distribution of global 137Cs fallout in soils of South America as a baseline for Earth Science studies (Completo, 2021)
PIERRE-ALEXIS CHABOCHE
, NICOLAS P.A. SABY
, J. PATRICK LACEBY
, JEAN P.G. MINELLA
, TALES TIECHER
, PABLO CABRAL
, RAFAEL RAMON
, MARCOS TASSANO
, MIREL CABRERA
, YURI JACQUES AGRA BEZERRA DA SILVA
, IRÈNE LEFEVRE
, OLIVIER EVRARD
Earth-Science Reviews, v.: 214 p.:103542 2021
Lugar de publicación: Netherlands
ISSN: 00128252
DOI:
10.1016/j.earscirev.2021.103542 http://dx.doi.org/10.1016/j.earscirev.2021.103542
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99mTechnetium- or Cy7-Labeled Fab(Tocilizumab) as Potential Multiple Myeloma Imaging Agents (Completo, 2021)
XIMENA CAMACHO
, CAROLINA PERRONI
, CAMILA L. MACHADO
, CAMILA DE GODOI CARNEIRO
, MARA DE SOUZA JUNQUEIRA
, DANIELE FARIA
, MARÍA F. GARCÍA
, MARCELO FERNÁNDEZ
, NATALIA ODDONE
, JUAN BENECH
, CARLOS A. BUCHPIGUEL
, HUGO CERECETTO
, ROGER CHAMMAS
, ELOISA RIVA
, PABLO CABRAL
, JUAN P. GAMBINI
Anti-Cancer Agents in Medicinal Chemistry, v.: 21 2021
Lugar de publicación: United arab emirates
ISSN: 18715206
DOI:
10.2174/1871520621999210104181238 http://dx.doi.org/10.2174/1871520621999210104181238
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Glucosylated Polymeric Micelles Actively Target a BreastCancer (Completo, 2021)
N Lecot
, R Glisoni
, N Oddone
, P. CABRAL
, Alejandro Sosnik
Advanced Therapeutics, 2021
Medio de divulgación: Internet
E-ISSN: 23663987
DOI:
10.1002/adtp.202000010
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Phosphatidylethanol Levels in Postpartum Women and Their Newborns in Uruguay and Brazil (Completo, 2020)
Aileen E Baldwin
, Nicole Hayes
, Erika Ostrander
, Raquel Magri
, Nelson Sass
, Maria dos Anjos Mesquita
, Monica Martínez
, Monica Correa Juliani
, P. CABRAL
, Michael Fleming
Alcoholism Clinical and Experimental Research, v.: 44 6 , 2020
Palabras clave:
Biomarkers; Fetal Alcohol Spectrum Disorders; Phosphatidylethanol; Prenatal Alcohol Exposure; Screening Areas de conocimiento:
Ciencias Médicas y de la Salud / Ciencias de la Salud /
Ciencias de la Salud /
Medio de divulgación: Internet
ISSN: 01456008
E-ISSN: 15300277
DOI:
10.1111/acer.14339 https://onlinelibrary.wiley.com/toc/15300277/2020/44/6
Background: There is increasing interest in the development of newborn screening tests to identify children at risk of fetal alcohol spectrum disorder (FASD) in order to provide these children with early intervention. Phosphatidylethanol (PEth) has emerged as a potential universal newborn screening candidate.
Methods: The aim of this report was to present the results of a study designed to compare PEth levels in 1,140 postpartum women and their newborn infants in Montevideo, Uruguay, and Sao Paulo, Brazil. Self-report alcohol use during pregnancy data was collected, along with both maternal and newborn dried blood spot samples for PEth analysis.
Results: The average age and parity of the women in the sample were 26 years of age and 2.3 pregnancies. For the Uruguay sample (n = 611), 45.8% of postpartum women had PEth levels ? 8 ng/ml with a mean positive PEth of 43.6 ng/ml. In contrast, 86.8% of the newborns had PEth levels ? 8 ng/ml, with a mean positive PEth of 77.4 ng/ml. For the Brazil sample (n = 529), 33.2% of women had PEth levels ? 8 ng/ml with a mean positive PEth of 31 ng/ml. In contrast, 76.9% of the Brazil newborns had PEth levels ? 8 ng/ml and 43.9% with a mean positive PEth of 61.1 ng/ml. PEth levels were significantly higher in newborns compared with their postpartum mothers in both the Uruguay and Brazil samples. Self-reported third-trimester alcohol was 6% in the Uruguay sample and 9.1% in the Brazil sample compared with positive maternal PEth levels in 45.8% and 33.2%, respectively.
Conclusions: Clinicians may want to consider newborn PEth screening in high-risk populations where prenatal alcohol use is common. The mechanism underlying significantly higher PEth levels in newborns compared with their mothers is not known
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Sgc8-c Aptamer as a Potential Theranostic Agent for Hemato-Oncological Malignancies. (Completo, 2020)
Estefanía Sicco
, Jessica Baez
, Manuel Ibarra
, Marcelo Fernández
, P. CABRAL
, María Moreno
, Hugo Cerecetto
, Victoria Calzada
Cancer Biotherapy & Radiopharmaceuticals, v.: 35 4 , p.:262 2020
Palabras clave:
PTK7; aptamer; lymphoma; theranostic. Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología de la Salud /
imagen molecular
Medio de divulgación: Internet
ISSN: 10849785
E-ISSN: 15578852
DOI:
10.1089/cbr.2019.3402. https://home.liebertpub.com/publications/cancer-biotherapy-and-radiopharmaceuticals/8
Background: Aptamers represent an emerging class of oligonucleotides that have the ability to bind ligands with high affinity. Sgc8-c aptamer recognizes PTK7, a member of the catalytically defective receptor protein tyrosine kinase family that is upregulated in various cancers, including hemato-oncological malignancies. Herein, an Sgc8-c-NOTA-radiolabeled probe was prepared for theranostic purpose. Materials and Methods: In this work, an Sgc8-c-radiolabeled probe against PTK7 was prepared, and biological evaluations-pharmacokinetic studies, biodistribution analysis, and in vivo molecular imaging-were performed. To obtain the radiolabeled probe, a modified 5'-amino-derivative of the Sgc8-c aptamer was bound to the metal chelator NOTA, and subsequently labeled with 67Ga with high yield and radiochemical purity. The precursor, Sgc8-c-NOTA, the radio probe Sgc8-c-NOTA-67Ga, and its nonradioactive complex, Sgc8-c-NOTA-69/71Ga, were purified by reverse-phase high-performance liquid chromatography and characterized by electrospray ionization mass spectrometry. The binding ability of Sgc8-c-NOTA-67Ga was studied in vitro against purified PTK7 receptor. In addition, the binding was also evidenced against the hemato-oncological A20 cell line, derived from B lymphocytes, and the corresponding A20-green fluorescent protein (GFP)-transfected cells. The proof of concept was performed on A20-GFP tumor-bearing mice, in which the biodistribution of the radiolabeled probe was evaluated through imaging, using X-ray, fluorescence, and ? modalities. The specific uptake of the probe was confirmed by blocking with the Sgc8-c aptamer in an in vivo competition assay. Results: The biodistribution results showed considerable uptake in tumor since 2 h, with highest at 48 h postinjection. However, the blood and muscle ID/g (injected dose per gram of tissue) activities were decreasing with time and tumor/no-target ratios increasing to 20 at 24 h postinjection. These results are consistent with the in vivo images. Conclusions: This study supports the utility of Sgc8-c-NOTA radiolabeled as a theranostic agent.
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Bimodal Therapeutic Agents against Glioblastoma, one of the most Lethal Cancer. (Completo, 2020)
Hugo Eduardo Cerecetto
, Marcos Couto
, Catalina Alamón
, Susana Nievas
, María Alejandra Dagrosa
, Francesc Teixidor
, P. CABRAL
, Clara Viñas
, Marina Perona
Chemistry, 2020
Palabras clave:
Glioblastoma Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Imagenologia molecular
Medio de divulgación: Internet
ISSN: 08619255
DOI:
10.1002/chem.202002963 https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/chem.202002963
About 95% of people diagnosed with glioblastoma die within five years. Glioblastoma is the most aggressive central nervous system tumour. It is necessary to make progress in the glioblastoma treatment so that advanced chemotherapy drugs or radiation therapy or, ideally, two?in?one hybrid systems should be implemented. Tyrosine kinase receptors?inhibitors and boron neutron capture therapy (BNCT), together, could provide a therapeutic strategy. In this work, sunitinib decorated?carborane hybrids were prepared and biologically evaluated identifying excellent antitumoral? and BNCT?agents. One of the selected hybrids was studied against glioma?cells finding that it was 4?times more cytotoxic than sunitinib and 1.7?times more effective than 10B? boronophenylalanine fructose complex when the cells were irradiated with neutrons.
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Mannose receptor 1 expression does not determine the uptake of high-density mannose dendrimers by activated macrophages populations (Completo, 2020)
Kovacs
, P. CABRAL
, Chammas
PLoS ONE, 2020
Palabras clave:
Dendrimero Mannose receptor 1 nanomedicina
Medio de divulgación: Internet
Escrito por invitación
E-ISSN: 19326203
DOI:
doi.org/10.1371/journal.pone.0240455 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0240455
The presence of a high number of macrophages within solid tumors is often significantly associated with poor prognosis and predict treatment failure for chemotherapy and radiotherapy. Macrophages are innate immune cells capable of performing diverse functions depending on the different signals from the microenvironment. The classically activated macrophage is commonly present during the early stages of tumor development while alternatively activated macrophages are associated with more advanced tumors. The distinction of the antitumoral macrophages from the pro-tumoral macrophages is not absolute. However, they have different cell surface markers such as mannose receptor (MRC1 or CD206) abundantly expressed by macrophages treated with interleukin-4 (IL-4). The important roles of macrophages in cancers suggest that it is important to develop novel therapies that target these cells. In the present study, we designed a probe using Polyamidoamine (PAMAM) fifth-generation (G5) dendrimers conjugated with mannose, Cyanine 7 (Cy7), and hydrazinonicotinamide (HYNIC) for target macrophages with high expression of MRC1 in the tumor. The intracellular uptake of 99mTc-HYNIC-dendrimer-mannose-Cy7 through the interaction with MRC1 in bone marrow-derived macrophages (BMDMs) untreated or treated with lipopolysaccharides (LPS) + interferon (IFN)? or IL-4 was analyzed. Our results show that high-density mannose dendrimers are preferentially bound by macrophages treated by IFN? and LPS that express lower levels of MRC1 than for macrophages treated by IL-4 that express high levels of MRC1. Furthermore, the ?
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Spatial cross-correlation between physicochemical and microbiological variables at superficial soil with different levels of degradation (Completo, 2020)
M Tassano
, A Monteñez
, L Nuñez
, T Trasante
, J Gonzalez
, J Irigojen
, P. CABRAL
, M Cabrera
CATENA, v.: 198 2020
Palabras clave:
soil 137Cs
Medio de divulgación: Internet
ISSN: 03418162
DOI:
10.1016/j.catena.2020.105000 https://www.sciencedirect.com/science/article/abs/pii/S0341816220305506
Best soil management practices can be achieved by evaluating the spatial cross-correlation variability of soil microbiological and physicochemical indicators, in order to comprehend the underlying relations between these mutually dependent properties, being valuable indicators for prospective evaluation of soil resources.
The purposes of this study were to measure microbiological and physicochemical variables in superficial soil, spatially cross-correlate and determine spatial causalities between these two families of variables.
The spatial variability of pH, gravimetric soil water content, 238U, 232Th, 40K, 137Cs, acid phosphatase, dehydrogenase activity, microbial biomass carbon, mesophilic aerobic bacteria and filamentous fungi was studied at a 13 ha field located in Uruguay.
238U and 232Th were both negatively lineally correlated with gravimetric soil water content (?0.42), 137Cs (-0.45 and ?0.48 respectively) and dehydrogenase activity (-0.44 and ?0.48 respectively). A semivariogram analysis revealed that the best fit model for soil variables was spherical, with moderate to strong spatial dependence. Cross-correlation results suggest that there is an influence factor from spatial interaction. In this sense, gravimetric soil water content connects physicochemical variables with soil biodiversity. Spatially, soil water content is inversely influenced by 232Th and 238U (as indicators of sub-superficial soil), and directly influenced by dehydrogenase activity (indicator of soil microbial activity), revealing soil microbial activity as a possible indicator of water retention in drying soils. The combination of spatial patterns of environmental radionuclides with microbiological indicators of soil quality could represent a valuable integrated approach to assess soil conservation status and further explain the impact of anthropogenic disturbance.
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99mTc-HYNIC-Aoc-cycMSH as a melanoma imaging agent: first patient experience (Resumen, 2020)
GAMBINI, JP
, Enzo Silvera
, Gabriel Krygier
, Dahiana Amarillo
, ALONSO, O.
, Marcos Tassano
, Mirel Cabrera
, Susan Deutscher,
, Thomas Quinn
, P. CABRAL
Journal of Nuclear Medicine, v.: 61 1 , 2020
Palabras clave:
Melanoma a MSH 99mTc
Medio de divulgación: Internet
Lugar de publicación: Society of Nuclear Medicine
ISSN: 01615505
E-ISSN: 2159662X
https://jnm.snmjournals.org/content/61/supplement_1/1361.short
Melanoma is a lethal cancer whose incidence is increasing worldwide and its prognosis depends on the stage at diagnosis. Currently, 18FDG is used as a melanoma staging agent (detection agent), but it is non-specific because its accumulation in melanoma cells is due to cellular metabolism not a melanoma specific biomarker, which may yield false positives results. We have previously reported the preclinical development of cyclic melanocortin-1 receptor targeted melanoma specific HYNIC-cycMSH imaging agents (1) based on the HYNIC-AocNle-cycMSHhex analog (2). The aim of this work is to describe the first in human results of 99mTc-HYNIC-Aoc-cycMSH for melanoma imaging.
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Carboranylanilinoquinazoline EGFR-inhibitors: toward ?lead-to-candidate? stage in the drug-development pipeline (Completo, 2019)
M Couto
, Catalina Alamón
, Carina Sánchez
, Belén Dávila
, Marcelo Fernández
, LECOT N
, P. CABRAL
, Francesc Teixidor
, Clara Viñas
, Hugo Cerecetto
Future Medicinal Chemistry, v.: 11 17 , 2019
Palabras clave:
carboranylanilinoquinazoline nanovehicles Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Nanomedicina
Medio de divulgación: Internet
Lugar de publicación: https://www.future-science.com
E-ISSN: 17568927
DOI:
10.4155/fmc-2019-0060 https://www.future-science.com/doi/abs/10.4155/fmc-2019-0060?rfr_dat=cr_pub%3Dpubmed&url_ver=Z39.88-
Background: Carboranylanilinoquinazoline-hybrids, developed for boron neutron capture therapy, have demonstrated cytotoxicity against murine-glioma cells with EGFR-inhibition ability. In addition, their adequate aqueous/metabolic stabilities and ability to cross blood?brain barrier make them good leads as to become antiglioma drugs. Aim: Analyze drug-like properties of representative carboranylanilinoquinazolines. Materials & methods: To expand carboranylanilinoquinazolines therapeutic spectrum, we studied their ability to act against glioma-mammal cells, U-87 MG and other tyrosine kinase-overexpress cells, HT-29. Additionally, we predicted theoretically and studied experimentally drug-like properties, in other words, organization for economic cooperation and development-recommended toxicity-studies and, due to some aqueous-solubility problems, and vehicularization for oral and intravenous administrations. Conclusion: We have identified a promising drug-candidate with broad activity spectrum, appropriate drug-like properties, adequate toxicological behavior and able ability to be loaded in suitable vehicles.
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Potencial empleo del heptapéptido ATWLPPR como agente de imagen molecular del angiogénesis tumoral (Completo, 2019)
X Camacho
, Carolina Perroni
, María Fernanda García
, Juan Pablo Gambini,
, Marcelo Fernández
, P. CABRAL
SALUD MILITAR, v.: 38 1 , p.:33 - 45, 2019
Palabras clave:
angiogenesis imagen
Medio de divulgación: Papel
E-ISSN: 15108023
La Imagenología Molecular comprende la visualización, caracterización y medida de procesos biológicos a nivel molecular y celular en seres humanos u otros seres vivos. Esta disciplina comprende la realización de imágenes en 2 o 3 dimensiones y su cuantificación en el tiempo. Las técnicas empleadas incluyen, entre otras, a la medicina nuclear. Esto ha llevado a la definición de agentes de imagen moleculares, como sondas empleadas para visualizar, caracterizar y medir procesos biológicos en sistemas vivos, siendo posible emplear moléculas endógenas y exógenas.
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99mTc nanocolloid indicyanine green: An hybrid tracer for breast sentinel node procedures (Resumen, 2019)
Juan Gambin
, Enzo Silvera
, Matias Musetti
, Thomas Quinn
, Guang Zhong Yang
, Santiago Matalonga
, Juan Hermida
, P. CABRAL
, O alonso
Journal of Nuclear Medicine, v.: 60 2019
Palabras clave:
ICG IR imagen
Medio de divulgación: Internet
ISSN: 01615505
E-ISSN: 2159662X
Results: SLNB with 99mTc NC ICG allowed us to use their complementary fluorescent and radioactive properties in order to find the SLN. In this way, the gamma probe guided us to the region where the node was, and fluorescence made it easy to remove it and spare the rest of surrounding tissue. In this way we could remove 38 nodes, being 4 positive. All radioactive nodes where fluorescent.
Conclusions: SLNB with 99mTc NC ICG could be performed without complications, having no adverse effects on patients. The hybrid tracer adds a visual cue with to the procedure aiding surgeons on SLN localization and removal.
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Selective Hypoxia Cytotoxin 7 Fluoro 2 Aminophenazine 5, 10 Dioxide: Toward Candidate to?Drug Stage in the Drug?Development Pipeline (Completo, 2019)
Belén Dávila
, Carina Sánchez
, Marcelo Fernández
, CERECETTO, H.
, Nicole Lecot
, P. CABRAL
, Romina Glisoni
, GONZALEZ, M.
ChemistrySelect, v.: 4 32 , 2019
Palabras clave:
hypoxic and necrotic Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Medio de divulgación: Internet
ISSN: 2365654
DOI:
10.1002/slct.201902601 https://www.researchgate.net/profile/Romina-Glisoni/publication/335437815_Selective_Hypoxia-Cytotoxi
7-Fluoro-2-aminophenazine 5, 10-dioxide, 1, has displayed in vitro bioreductive selective cytotoxicity, which could acts towards tumors containing hypoxic regions. In this work, we describe some preclinical studies of compound 1 confirming its in vivo antitumor activity. The synthesis of compound 1 was scaled up to 3 g improving the micro-scale yield. Some drug-like properties for compound 1 were theoretically-predicted and others, ie aqueous-solubility and toxicity-mutagenicity, in vivo chromosomal-aberrations and ip acute LD50-, were experimentally confirmed. Antitumoral activity was studied in mice bearing hypoxic 4T1-breast-tumor by assessing evolution of the tumorsizes, animal-survival and bio-chemical/hematological. Compound 1 in vivo efficacy, with the absence of systemic toxicity, was confirmed.. Results highlight the potential of 7-fluoro-2-aminophenazine 5, 10-dioxide as promissory therapeutic agent for solid tumors.
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Development of fluorescent- and radio-traceable T1307-polymeric micelles and studies of biodistribution on tumor-bearing mice. (Completo, 2019)
N Lecot
, G Rodriguez
, V STANCOV,
, M Gonzalez
, P. CABRAL
, CERECETTO, H.
Brazilian Journal of Pharmaceutical Sciences, 2019
Palabras clave:
Nanotecnology 99mTc Cancer´
Medio de divulgación: Internet
E-ISSN: 21759790
In recent years, nanocarriers have been studied as promising pharmaceutical tools for controlled drug-delivery, treatment-efficacy follow-up and disease imaging. Among them, X-shaped amphiphilic polymeric micelles (Tetronic®, poloxamines) display great potential due to their biocompatibility and non-toxic effects, among others. In the present work, polymeric micelles based on the T1307 copolymer were initially decorated with a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-fluorophore in order to determinate its in vivo biodistribution on 4T1 tumor-bearing mice. However, unfavorable results with this probe led to two different strategies. On the one hand, the BODIPY-micelle-loaded, L-T1307-BODIPY, and on the other hand, the 99mTc-micelle-radiolabeled, L-T1307-99mTc, were analyzed separately in vivo. The results indicated that T1307 accumulates mainly in the kidneys, the lungs and the tumor, reaching the maximum organ-accumulation 2 hours after intravenous injection. Additionally, and according to the results obtained for L-T1307-99mTc, the capture of the polymeric micelles in organs could be observed up to 24 hours after injection. The results obtained in this work were promising towards the development of new radiotracer agents for breast cancer based on X-shaped polymeric micelles.
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Derivatizations of Sgc8-c aptamer to prepare metallic radiopharmaceuticals as imaging diagnostic agents: Syntheses, isolations, and physicochemical characterizations (Completo, 2018)
E SICCO
, J BAEZ
, J MARGENAT
, F GARCIA
, P. CABRAL
, M MORENO
, H CERECETTO
, V CALZADA
Chemical Biology & Drug Design, 2018
Palabras clave:
aptamer Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Imegenologia Molecular
Medio de divulgación: Internet
E-ISSN: 17470285
DOI:
10.1111/cbdd.13135 Aptamers, oligonucleotides with the capability to bind to a target through non-covalent bonds with high affinity and specificity, have a great number of advantages as scaffold to prepare molecular imaging agents. In this sense, we have performed post-SELEX modifications of a truncated aptamer, Sgc8-c, which bind to protein tyrosine kinase 7 to obtain a specific molecular targeting probe for in vivo diagnosis and in vivo therapy. Herein, we describe the synthetic efforts to prepare conjugates between Sgc8-c and different metallic ions chelator moieties in short times, high purities, and adequate yields. The selected chelator moieties, derived from 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid, 2-benzyl-1,4,7-triazacyclononane-1,4,7-triacetic acid, and 6-hydrazinonicotinic acid, were covalently attached at the 5'-aptamer position yielding the expected products which were stable in aqueous solution up to 75°C and in typical aptamer storage conditions at least for 30 days.
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Evaluation of chromosomal aberrations induced by 188Re-dendrimer nanosystem on B16f1 melanoma cells (Completo, 2018)
P. CABRAL
, M Tassano
, N Oddone
, M fernandez
, W Porcal
, M F Garcia
, MARTINEZ-LOPEZ W.
, BENECH, JC.
, P Cabral
International Journal of Radiation Biology, 2018
Palabras clave:
Dendrimer 188Re chromosomal aberrations melanoma anti-tumor therapy Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Nanotecnologia
Medio de divulgación: Internet
ISSN: 09553002
E-ISSN: 13623095
DOI:
10.1080/09553002.2018.1478161 https://www.tandfonline.com/toc/irab20/current
Purpose: To study the rhenium-188 labeling of polyamidoamine (PAMAM) generation 4 (G4) dendrimer and its evaluation on biodistribution and chromosomal aberrations in melanoma cells induced by ionizing radiation as potential treatment agent.
Materials and methods: Dendrimers were first conjugated with Suc-HYNIC (succinimidyl 6-hydrazinopyridine-3-carboxylic acid hydrochloride). Dendrimer-HYNIC was then incubated with 188ReO4?. Biodistribution was performed administrating 188Re-dendrimer to normal (NM) or melanoma-bearing mice (MBM). Chromosome aberration test was conducted in order to measure treatment capacity of 188Re-dendrimer in melanoma cells.
Results: Radiolabeling yield of dendrimer was approx. 70%. Biodistribution studies in NM showed blood clearance with hepatic and renal depuration. MBM showed a similar pattern of biodistribution with tumor uptake of 6% of injected dose. Aberrant metaphases quantified in control cells were 7%, increasing to 29.5% in cells treated with 15?Ci (0.555 MBq) of 188Re-dendrimer for 24?h.
Conclusions: 188Re-dendrimer can produce double-stranded breaks in DNA induced by ionizing radiation in melanoma cells in vitro.
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Synthesis of hydrophilic HYNIC-[1,2,4,5]tetrazine conjugates and their use in antibody pretargeting with 99mTc. (Completo, 2018)
GARCÍA, F. o GARCÍA, MF
, Fabio Gallazzi
, Mara de Souza Junqueira
, Marcelo Fernández
, Ximena Camacho
, Janio da Silva Mororó
, Daniele Faria
, Camila de Godoi Carneiro
, Marcos Couto
, Federico Carrión
, Otto Pritsch
, Roger Chammas
, Thomas Quinn
, P. CABRAL
, Hugo Cerecetto
Organic & Biomolecular Chemistry, v.: 16 p.:5275 - 5285, 2018
Palabras clave:
Pretargeted imaging Tecnecio Imegen Molecular Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagen Molecular
Medio de divulgación: Internet
Lugar de publicación: Royal Society of Chemistry
ISSN: 14770520
E-ISSN: 14770539
https://pubs.rsc.org/en/Content/ArticleLanding/2018/OB/C8OB01255E#!divAbstract
Pretargeted imaging, based on the highly reactive process between [1,2,4,5]tetrazines with trans-cyclooctene (TCO), appears as an attractive strategy to overcome disadvantages associated with traditional radioimmunoconjugates. To be successful, the radiolabeled component should react in vivo with the conjugated antibody and the non reactive excess clear fast from the organism. Herein, we explore the in vivo effects of hydrophilic linker incorporation into [1,2,4,5]tetrazine systems bearing a 6-hydrazinonicotinyl (HYNIC) moiety for technetium-99m coordination. Incorporation of a polypeptide chain containing hydrophilic aminoacids, resulted in a derivative with renal clearance. Pretargeted bevacizumab imaging was used as proof of concept.
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Discovery of Potent EGFR Inhibitors through the Incorporation of a 3D-Aromatic-Boron-Rich-Cluster into the 4-Anilinoquinazoline Scaffold: Potential Drugs for Glioma Treatment (Completo, 2018)
Marcos Couto
, GARCÍA, F. o GARCÍA, MF
, Catalina Alamón
, Mauricio Cabrera
, P. CABRAL
, Alicia Merino
, Francesc Teixidor
, Hugo Cerecett
, Clara Viñas
Chemistry - A European Journal, v.: 2 24 13, p.:3122 - 3126, 2018
Palabras clave:
iological chemistry boron; carborane; drug development; glioma Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagen Molecular
Medio de divulgación: Internet
Lugar de publicación: Wiley Online Library
E-ISSN: 15213765
https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201705181
New 1,7?closo?carboranylanilinoquinazoline hybrids have been identified as EGFR inhibitors, one of them with higher affinity than the parent compound erlotinib. The comparative docking analysis with compounds bearing bioisoster?substructures, demonstrated the relevance of the 3D aromatic?boron?rich moiety for interacting into the EGFR ATP binding region. The capability to accumulate in glioma cells, the ability to cross the blood?brain barrier and the stability on simulated biological conditions, render these molecules as lead compounds for further structural modifications to obtain dual action drugs to treat glioblastoma.
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99mTc radiolabeled archaeosomes as a potential melanoma imaging agent (Completo, 2018)
M Cabrera
, M Tassano
, M Fernandez
, J P Gambini
, P. CABRAL
Proceedings of Anticancer Research, v.: 2 3 , p.:1 - 7, 2018
Palabras clave:
Nanotecnologia Imagen Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Básica /
Nanomedicina
Medio de divulgación: Internet
ISSN: 22083545
E-ISSN: 22083553
DOI:
10.26689/par.v2i3.357 http://www.bbwpublisher.com/index.php/PAR/article/view/357
Background: Melanoma incidence is growing worldwide. Although recent advances in imaging, there isn`t still available a specific melanoma agent that can be used for melanoma staging. Archaeosomes may be defined as liposomes composed of one or more polar lipids extracted from the Archaea domain (Archaebacterium). Objective: Â As liposomes have been used as vehicles for drugs and isotopes, the aim of this work was to 99mTc radiolabel archaeosomes and evaluates its potential role as a melanoma imaging agent.
Methods: Archaeosomes were prepared by hand shaken method and were radiolabeled with 99mTc; Radiolabelling efficiency and purity was evaluated through different chromatographic systems. In vitro stability of 99mTc-DTPA-archaeosomes was performed through L-cysteine challenge.
Results: Archaeosomes size distribution was determined by laser light scattering, having nanometer size between 90 and 120 nm. Radiolabelling efficiency was greater than 90%; 99mTc-DTPA-Archaeosomes presented a radiochemical purity superior to 80% evaluated 24 hours post radiolabelling. For the highest concentration of L-cysteine (30mM) and 1h incubation, radiochemical purity was 92.90 %, 6.41 % was bound to cysteine and 0.69 % remained as 99mTcO4- . Biodistribution and scintigraphic imaging studies in healthy C57 black mice showed high liver, spleen uptake and renal elimination. Melanoma bearing mice, had similar biodistribution as healthy mice but increased melanoma uptake, with T/M ratio of 46 ±3.7.
Conclusions: Â Our results show the feasibility of 99mTc radiolabelling archaeosomes and their potential role as a melanoma imaging agent.
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Small-Molecule Kinase-Inhibitors-Loaded Boron Cluster as Hybrid Agents for Glioma-Cell-Targeting Therapy. (Completo, 2017)
M COUTO
, I MASTANDREA
, M CABRERA
, P. CABRAL
, F TEIXIDOR
, H CERECETTO
, C VIñAS
Chemistry, v.: 39 p.:9233 - 9238, 2017
Palabras clave:
carboranes Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Terapia Molecular
Medio de divulgación: Internet
ISSN: 08619255
DOI:
10.1002/chem.201701965 The reported new anilinoquinazoline-icosahedral borane hybrids have been evaluated as glioma targeting for potential use in cancer therapy. Their anti-glioma activity depends on hybrids' lipophilicity; the most powerful compound against glioma cells, a 1,7-closo-derivative, displayed at least 3.3 times higher activity than the parent drug erlotinib. According to the cytotoxic effects on normal glia cells, the hybrids were selective for epidermal growth factor receptor (EGFR)-overexpressed tumor cells. These boron carriers could be used to enrich glioma cancer cells with boron for cancer therapy
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Tocilizumab Labeling with 99mTechnetium via HYNIC as a Molecular Diagnostic Agent for Multiple Myeloma. (Completo, 2017)
X CAMACHO
, C L MACHADO
, M F GARCIA
, FERNÁNDEZ, M
, ODDONE N
, J BENECH
, JP. GAMBINI
, H CERECETTO
, R CHAMMAS
, P. CABRAL
, E RIVA
Anti-Cancer Agents in Medicinal Chemistry, v.: 9 p.:1267 - 1277, 2017
Palabras clave:
Multiple Myeloma Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
imagen Molecular
Medio de divulgación: Internet
ISSN: 18715206
DOI:
10.2174/1871520617666170213144917 Multiple myeloma is the second most common hematological malignancy. Interleukin-6 (IL-6) is one of the key molecules related to growth, survival and proliferation of myeloma cells. Tocilizumab is a humanized monoclonal antibody directed against receptor of IL-6.
OBJECTIVE:
To radiolabel Tocilizumab with 99mTechnetium as a potential imaging agents for MM.
METHODS:
IL-6R expression was studied by laser confocal microscopy in MM cell lines (U266, NCI-H929 and MM1S). Tocilizumab was derivatized with NHS-HYNIC-Tfa and radiolabeling with 99mTc. Radiochemical stability was determined. In-vitro binding and immunoreactive fraction assays were performed. Biodistribution and SPECT/CT imaging were evaluated in healthy BALB/c and MM-bearing BALB/c nude mice.
RESULTS:
LCM studies allowed us to demonstrate that U266, NCI-H929 and MM1S cells present high expression of IL-6R in cell membrane. Radiolabeling was carried out in a fast, reproducible, easy and stable way having high radiochemical purity and did not interfere with epitope recognition. The immunoreactive fraction of 99mTc- HYNIC-Tocilizumab was 86.35%. Biodistribution showed a high uptake in liver, spleen, gastrointestinal tract and kidneys. SPECT/CT imaging of MM-bearing BALB/c nude mice showed liver uptake and a high tumor selective uptake at 24 hours.
CONCLUSIONS:
Our results support the potential role of 99mTc-HYNIC-Tocilizumb as a novel MM radiotracer for targeting IL-6 expression in-vivo. We describe the development of a formulation kit to radiolabeling monoclonal antibodies in a clinical setting. We hope that these novel molecular imaging agents will open the path to new diagnostic and therapeutic strategies for MM disease.
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Technetium-99m- or Cy7-Labeled Rituximab as an Imaging Agent for Non-Hodgkin Lymphoma (Completo, 2017)
X CAMACHO
, C L MACHADO
, M F GARCÍA
, JP. GAMBINI
, A BANCHERO
, FERNÁNDEZ, M
, N ODONNE
, BERTOLINI ZANATTA D
, C ROSA
, C BUCHPIGUEL
, R CHAMMAS
, E RIVA
, P. CABRAL
Oncology (Suiza), v.: 4 p.:229 - 242, 2017
Palabras clave:
Non-Hodgkin Lymphoma Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
imagen Molecular
Medio de divulgación: Internet
ISSN: 00302414
E-ISSN: 14230232
DOI:
10.1159/000452419 https://www.karger.com/Article/Abstract/452419
Rituximab was the first monoclonal antibody approved for the treatment of B-cell non-Hodgkin lymphoma (NHL) expressing CD20 antigen. This antibody has also the potential to be used as a specific fluorescent and radiolabel agent for targeting NHL.
OBJECTIVE:
To radiolabel rituximab with technetium-99m (99mTc) or Cy7 and evaluate both probes as potential imaging agents for NHL.
METHODS:
Rituximab was derivatized with the trifluoroacetyl hydrazino protected form of succinimidyl ester of HYNIC and radiolabeled with 99mTc. Radiochemical stability and in vitro cell assays were evaluated. Biodistribution and single-photon emission computed tomography/computed tomography (SPECT/CT) were performed. Raji cells were transfected with luciferase for bioluminescent NHL imaging up to 21 days. Rituximab was labeled with Cy7 for in vivo noninvasive fluorescence imaging up to 96 h.
RESULTS:
Radiolabeling was carried out in a fast, reproducible, easy, and stable way with high radiochemical purity and did not interfere with epitope recognition. Biodistribution and SPECT/CT studies showed high liver and discrete tumor uptake. Bioluminescence and fluorescence studies helped us evaluate rituximab-Cy7 in Raji subcutaneous engraftment in BALB/c nude mice.
CONCLUSIONS:
Our results support the potential use of rituximab labeled either with 99mTc or Cy7 as a molecular imaging tool for staging, restaging, and guiding surgical excision of tumors, which merits further evaluation.
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177Lu-DOTA-Bevacizumab: Radioimmunotherapy Agent for Melanoma. (Completo, 2017)
V CALZADA
, X CAMACHO
, FERNÁNDEZ, M
, O. ALONSO
, R CHAMMAS
, E RIVA
, JP. GAMBINI
, P. CABRAL
Current Radiopharmaceuticals, v.: 10 p.:21 - 28, 2017
Palabras clave:
radioimmunotherapy agent Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Terapia Molecular
Medio de divulgación: Internet
ISSN: 18744710
DOI:
10.2174/1874471009666161010155246 Vascular endothelial growth factor (VEGF) is one of the classic factors to tumor-induced angiogenesis in several types, including melanoma. Bevacizumab is a humanized monoclonal antibody directed against VEGF.
OBJECTIVE:
To radiolabel Bevacizumab with 177-Lutetium as a potential radioimmunotherapy agent for melanoma.
METHODS:
Bevacizumab was derivatized with DOTA-NHS-ester at 4 ºC for 18 h. DOTABevacizumab was radiolabeled with 177LuCl3 (15 MBq/mg) at 37 ºC for 1 h. The studies were performed in healthy and B16F1 tumor-bearing C57BL/6J mice at 24 and 48 h (n = 5). Scinthigraphic imaging studies were performed at 24 h to determine the radiochemical stability, targeting specificity and pharmacokinetics of the 177Lutetium-labeled antibody.
RESULTS:
DOTA-Bevacizumab was efficiently labeled with 177LuCl3 at 37 °C. The in-vitro stability of labeled product was optimal over 72 h. In-vivo biodistribution studies showed a high liver and tumor uptake of 177Lu-DOTA-Bevacizumab, with tumor-to-muscle ratios of 11.58 and 6.37 at 24 and 48 h p.i. Scintigraphic imaging of melanoma tumor-bearing C57BL/6J mice showed liver and a high tumor selective uptake of 177Lu-DOTA-Bevacizumab at 24 h.
CONCLUSIONS:
Our results support the potential role of 177Lu-DOTA-Bevacizumab as a novel radioimmunotherapy agent for melanoma. We hope that these novel molecular imaging agents will open the path to new diagnostic and therapeutic strategies for Melanoma disease.
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Preliminary in vivo characterization of a theranostic aptamer: Sgc8-c-DOTA-67 7 Ga (Completo, 2017)
V. CALZADA
, JESSICA BáEZ
, ESTEFANíA SICCO
, JIMENA MARGENAT
, MARCELO FERNáNDEZ
, MARíA MORENO
, MANUEL IBARRA
, THOMAS QUINN
, JUAN PABLO GAMBINI
, P. CABRAL
, CERECETTO H
Aptamers, v.: 1 2017
Palabras clave:
aptamer
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagenologia molecular
E-ISSN: 25143247
Nucleic acid aptamers can recognise their target with high affinity and specificity, and their potential as molecular imaging agents and use in theranostics are being explored. Compared withantibodies, aptamers can be easily synthesized and chemically modified, rendering them a valuable tool for in vivo approaches. Herein, we investigated a 41nt DNA aptamer as a theranostic agent for lymphoma and melanoma. This aptamer exhibits specific binding and high affinity for the
8 PTK7 receptor that is overexpressed in many cancer cells. A 5’-amino-derivative of the Sgc8-c
aptamer was bound to the metal chelator DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-
tetraacetic acid) and labelled with the radionuclide 67 10 Ga, forming the aptamer probe Sgc8-c-DOTA67Ga. Different conditions during synthesis, purification and identification of the intermediate and final radiolabelled probe, were examined. Aptamer modification and radiolabelling were performed with high yields, resulting in a probe that was stable in neutral buffered solution. Binding to PTK7 was studied in CCRF-CEM, A20 and B16F1 cell lines, and in purified PTK7-1
receptor, to confirm specificity. The in vitro cell lines showed different levels of uptake, and the
signal increased over time. In vivo binding properties were studied in A20 and B16F10 tumour17
bearing mice and images were acquired using X-rays and gamma imaging modalities for both
models. Preliminary results in both tumour models showed good aptamer uptake by tumour.
Hepatobiliar metabolism was observed with Sgc8-c-DOTA-67 19 Ga and no signal was detected in normal tissue. In summary, these results support the utility of labelled aptamers as theranostic agents in different imaging modalities and theranostic
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99mTc-HYNIC-Fab(Bevacizumab): potencial agente de imagen para diagnóstico de Linfoma No Hodgkin. (Completo, 2017)
CAROLINA PERRONIA
, CAMACHO X
, M F GARCÍA
, M FERNáNDEZ
, CERECETTO H
, JP. GAMBINI
, RIVA E; E RIVA
, P. CABRAL
SALUD MILITAR, v.: 2 2017
Palabras clave:
Linfoma No Hodgkin Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagenologia
Medio de divulgación: Papel
E-ISSN: 15108023
Vascular endothelial growth factor (VEGF) is a key factor in tumor angiogenesis in numerous types of tumors, including Non-Hodgkin Lymphoma (LNH). The objective of this paper is the radiolabeling of antigen-binding fragments (Fab) of the Bevacizumab monoclonal antibody with 99mTc and its assessment as a potential imaging agent for LNH. In order to achieve this, it was analyzed the VEGF expression with flow cytometry in an LNH (Toledo) cell line. Fragmentation was carried out with papain and Fab obtained were conjugated with NHS-HYNIC-Tfa and labeled with 99mTc. Radiochemical purity and stability were tested. Biodistribution studies were performed in healthy mice and in LNH carriers as well. It was observed that Toledo cells showed a high VEGF expression. Radiolabeling was completed in a quick, easy, duplicable and stable manner, with radiochemical purities >90%. Biodistribution studies revealed a significant kidney and tumor accumulation, showing that the kidney clearance route is the most important one. From the obtained results, it is concluded that the 99mTc-HYNIC-Fab (Bevacizumab) represents a potential imaging agent for VEGF expression associated to LNH.
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Near-Infrared Fluorescence In-Vivo Imaging of Non-Hodgkin Lymphoma Using Cy7-Bevacizumab (Resumen, 2017)
CAMACHO X
, CAROLINA PERRONI
, MARA DE SOUZA JUNQUEIRA
, FERNÁNDEZ, M
, SILVINA BUSTOS
, CARLOS BUCHPIGUEL
, CHAMMAS, R.
, JP. GAMBINI
, P. CABRAL
, E RIVA
Blood, v.: 1 30 , p.:5202 - 5202, 2017
Palabras clave:
Near-Infrared Fluorescence Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagenologia
Medio de divulgación: Internet
Lugar de publicación: http://www.bloodjournal.org
ISSN: 00064971
E-ISSN: 15280020
Introduction: Tumor angiogenesis is necessary for tumor growth and metastasis. Of the many known inducers that promote tumor angiogenesis, vascular endothelial growth factor (VEGF) plays the most important role. Increased VEGF expression has been found in many tumor types, including non-Hodgkin lymphoma (NHL). Bevacizumab is a humanized monoclonal antibody that recognizes all known isoforms of VEGF. This study aims to design a diagnostic molecular probe, Cy7-Bevacizumab, in which Cy7 is a near-infrared fluorescent dye designed to in-vivo non-invasively identify VEGF expression in NHL tumors.
Methodology: VEGF expression was confirmed using flow cytometry on NHL cell line Toledo. Cy7-Bevacizumab was synthesized through nucleophilic substitution reaction between monofunctional N-hydroxysuccinimide ester (Cy7-NHS) and Bevacizumab [1]. After purification, the conjugate was characterized by SDS-PAGE and spectrophotometry. For in-vivo imaging, Cy7-Bevacizumab (1 nmol) was injected intravenously in NHL tumor-bearing Balb/c nude mice (n=3) and was evaluated with near-infrared fluorescence (NIRF) at 2, 6, 24, 48, 72 and 96 h post-injection. After 96 h the lymph nodes accumulation was analyzed by ex-vivo NIRF images.
Results: Flow cytometry showed that NHL Toledo cell line expresses high levels of VEGF. Bevacizumab was successfully labeled with Cy7, as shown by SDS-PAGE and spectrophotometry. Non-invasively NIRF in-vivo imaging of NHL tumor-bearing Balb/c nude mice allowed identification of tumors up to 96 h post-injection. Ex-vivo NIRF images confirmed tracer deposition at tumors.
Conclusions: NHL Toledo cell line expresses VEGF. Cy7 labeled Bevacizumab has the potential to become an optical imaging agent for VEGF expressing tumors such as NHL, being possibly useful in guiding surgical excision of tumors and biopsies, which merits further evaluation.
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Indocyanine Green (ICG) detection system - towards Image Guided Cancer Surgery (Resumen, 2017)
JP. GAMBINI
, QUINN, T.P.
, VILA, R.
, SANTIAGO MATALONGA
, JUAN HERMIDA
, O. ALONSO
, JUAN COSSA
, MICHAEL HUGHES
, DANIEL LEFF
, GUANG ZHONG YANG
, P. CABRAL
Journal of Nuclear Medicine, v.: 58 p.:533 - 533, 2017
Palabras clave:
ICG Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagen por fluorescencia
Medio de divulgación: Internet
ISSN: 01615505
E-ISSN: 2159662X
ur previous optical imaging work allowed us to build a portable indocyanine green (ICG) detection system to be used with 99mTc nanocolloid ICG (99mTc-N-ICG) (1), during surgical procedures such as in sentinel node mapping procedures in breast and melanoma patients. The aim of the current study was to describe an upgraded ICG detection system (ICGDS)(Figure 1,2) and results obtained during axillary sentinel node biopsy (SLNB) procedures for breast cancer staging.
Methods: The new ICGDS has the specifications described in Table 1 and it was used in BCSN procedures. We performed 10 SLNB procedures using 99mTc-N-ICG. Injection of the tracer was performed perioareolar subcutaneously in the same quadrant of the tumor. Lymphoscintigrapy and SPECT-CT were acquired prior surgery. Intraoperative SN localization was performed using a gamma probe and ICGDS. Room lights were dimmed or turned off during ICGDS use. Intraoperative localization of SN was made using acoustic cues from the probe that guided surgeon to the region where the node was located and later ICGD allowed to visually identify them (Figure3).
Results: The new ICGDS allowed us to identify 18 SLNs that were radioactive and fluorescent and provided enhanced confidence to surgeon to precisely remove the relevant nodes, and spare non hybrid nodes, particularly when nodes were clustered. We did not any radioactive only or fluorescent only nodes. All fluorescent nodes were radioactive.
Conclusion: The new portable ICG detection system was able to detect 99mTc-N-ICG. These procedures were safe and carried out without complications. Advances in instrumentation and novel specific targeting fluorescent or hybrid tracers may improve patient outcome
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In vitro and in vivo uptake studies of PAMAM G4.5 dendrimers in breast cancer. (Completo, 2016)
ODDONE N
, LECOT N
, RODRIGUEZ-HARALAMBIDES A
, FERNáNDEZ M
, P. CABRAL
, CERECETTO H
, BENECH JC
Journal of Nanobiotechnology, v.: 13 14 45, 2016
Palabras clave:
Antitumor drug delivery systems Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Físico-Química, Ciencia de los Polímeros, Electroquímica /
Nanotecnologia
Medio de divulgación: Internet
E-ISSN: 14773155
DOI:
10.1186/s12951-016-0197-6 reast cancer is the second leading cause of cancer death worldwide. Nanotechnology approaches can overcome the side effects of chemotherapy as well as improve the efficacy of drugs. Dendrimers are nanometric size polymers which are suitable as drug delivery systems. To the best of our knowledge, studies on the application of PAMAM G4.5 (polyamidoamine half generation 4) dendrimers as potential drug delivery systems in breast cancer have not been reported. In this work we developed a PAMAM G4.5 dendrimer containing FITC (fluorescein isothiocyanate) dye to study their uptake by murine breast cancer cells and BALB/c mice breast tumors.
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RADIOPHARMACEUTICALS IN tumor hypoxia imaging: A review focused on MEDICINAL chemiSTRY aspects. (Completo, 2016)
P. CABRAL
, CERECETTO H
Anti-Cancer Agents in Medicinal Chemistry, v.: 7 2016
Palabras clave:
hypoxia imaging Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagenologia
Medio de divulgación: Internet
Escrito por invitación
ISSN: 18715206
Since its first description in 1955, tumor hypoxia has become a central issue in cancer treatment. Since then, it is essential to diagnose accurately the tumor oxygenation degree in order to establish the appropriate treatment. In this regard, a wide diversity of radiopharmaceuticals for in vivo imaging has been developed. Special conditions of the hypoxic microenvironment are low O2 partial pressure, enhanced levels of reductases, and genetic-adaptation-expression biomolecules involved in angiogenesis, erythropoiesis, cellular proliferation, apoptosis, metabolism- and glucose-uptake, local invasion, and metastatic spread. The developement of radiolabeled hypoxia markers has been based on reductase substrates, like bioreductive ligands, or on entities capable of recognizing overexpressed proteins under hypoxia conditions, i.e. HIF-1α and carbonic anhydrase IX, among others. In this review these hypoxia markers are analyzed focusing on their medicinal chemistry characteristics.
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(99m)Tc-bioorthogonal click chemistry reagent for in vivo pretargeted imaging. (Completo, 2016)
GARCIA MF
, ZHANG X
, SHAH M
, NEWTON-NORTHUP J
, P. CABRAL
, CERECETTO H
, QUINN T
Bioorganic & Medicinal Chemistry, v.: 15 24 6, 2016
Palabras clave:
Click chemistry Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Orgánica /
Imagenologia Molecular
Medio de divulgación: Internet
ISSN: 09680896
E-ISSN: 14643391
DOI:
10.1016/j.bmc.2016.01.046. Epub 2016 Jan 29 Metal-free click chemistry has become an important tool for pretargeted approaches in the molecular imaging field. The application of bioorthogonal click chemistry between a pretargeted trans-cyclooctene (TCO) derivatized monoclonal antibody (mAb) and a (99m)Tc-modified 1,2,4,5-tetrazine for tumor imaging was examined in vitro and in vivo. The HYNIC tetrazine compound was synthesized and structurally characterized, confirming its identity. Radiolabeling studies demonstrated that the HYNIC tetrazine was labeled with (99m)Tc at an efficiency of >95% and was radiochemically stable. (99m)Tc-HYNIC tetrazine reacted with the TCO-CC49 mAb in vitro demonstrating its selective reactivity. In vivo biodistribution studies revealed non-specific liver and GI uptake due to the hydrophobic property of the compound, however pretargeted SPECT imaging studies demonstrated tumor visualization confirming the success of the cycloaddition reaction in vivo. These results demonstrated the potential of (99m)Tc-HYNIC-tetrazine for tumor imaging with pretargeted mAbs.
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177Lu-DOTA-Bevacizumab: Radioimmunotherapy agent for melanoma. (Completo, 2016)
CAMACHO X
, CALZADA V
, , FERNáNDEZ M
, ALONSO O
, CHAMMAS R
, RIVA E
, GAMBINI JP
, P. CABRAL
Current Radiopharmaceuticals, v.: 10 2016
Palabras clave:
Radioimmunotherapy Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Radiofarmacos
Medio de divulgación: Internet
ISSN: 18744710
BACKGROUND:
Vascular endothelial growth factor (VEGF) is one of the classic factors to tumor-induced angiogenesis in several types, including melanoma. Bevacizumab is a humanized monoclonal antibody directed against VEGF.
OBJECTIVE:
To radiolabel Bevacizumab with 177-Lutetium as a potential radioimmunotherapy agent for melanoma.
METHODS:
Bevacizumab was derivatized with DOTA-NHS-ester at 4 ºC for 18 h. DOTA-Bevacizumab was radiolabeled with 177LuCl3 (15 MBq/mg) at 37 ºC for 1 h. The studies were performed in healthy and B16F1 tumor-bearing C57BL/6J mice at 24 and 48 h (n = 5). Scinthigraphic imaging studies were performed at 24 h to determine the radiochemical stability, targeting specificity and pharmacokinetics of the 177Lutetium-labeled antibody.
RESULTS:
DOTA-Bevacizumab was efficiently labeled with 177LuCl3 at 37 ˚C. The in-vitro stability of labeled product was optimal over 72 h. In-vivo biodistribution studies showed a high liver and tumor uptake of 177Lu-DOTA-Bevacizumab, with tumor-to-muscle ratios of 11.58 and 6.37 at 24 and 48 h p.i. Scintigraphic imaging of melanoma tumor-bearing C57Bl/6J mice showed liver and a high tumor selective uptake of 177Lu-DOTA-Bevacizumab at 24 h.
CONCLUSIONS:
Our results support the potential role of 177Lu-DOTA-Bevacizumab as a novel radioimmunotherapy agent for melanoma. We hope that these novel molecular imaging agents will open the path to new diagnostic and therapeutic strategies for Melanoma disease.
-
Fab(nimotuzumab)-HYNIC-99mTc: Antibody Fragmentation for Molecular Imaging Agents. (Completo, 2016)
V CALZADA
, MF GARCIA
, ALONSO-MARTíNEZ LM
, X CAMACHO
, GOICOCHEA E
, M FERNANDEZ
, CASTILLO AX, DíAZ-MIQUELI A
, IZNAGA-ESCOBAR N
, MONTAñA R
, 1
, 1
, P. CABRAL
Anti-Cancer Agents in Medicinal Chemistry, v.: 16 9 , p.:1184 - 1189, 2016
Palabras clave:
Molecular Imaging Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Radiofarmacos
ISSN: 18715206
Finally, fast blood clearance nimotuzumab is a humanized monoclonal antibody that recognise, with high specific affinity, the epidermal growth factor receptor (EGF-R) which play an important role in the growth process associated with many solid tumors. In this work, the whole antibody was digested with papain in order to generate a Fab fragment, derivatized with NHS-HYNIC-Tfa and radiolabel with technetium-99m (99mTc) as a potential agent of molecular imaging of cancer. Both, whole and fragment radiolabels were in-vivo and in-vitro characterized. Radiolabeling conditions with Tricine as coligand and quality controls were assessed to confirm the integrity of the labeled fragment. Biodistribution and imaging studies in normal and spontaneous adenocarcinoma mice were performed at different times to determine the in-vivo characteristics of the radiolabel fragment. Tumor localization was visualized by conventional gamma camera imaging studies, and the results were compared with the whole antibody. Also, an immunoreactivity assay was carried out for both. The results showed clearly the integrity of the nimotuzumab fragment and the affinity by the receptor was verified. Fab(nimotuzumab)-HYNIC was obtained with high purity and a simple strategy of radiolabeling was performed. Finally, a fast blood clearance was observed in the biodistribution studies increasing the tumor uptake of Fab(nimotuzumab)- HYNIC-99mTc over time, with tumor/muscle ratios of 3.81 ± 0.50, 5.16 ± 1.97 and 6.32 ± 1.98 at 1 h, 4 h and 24 h post injection. Urinary excretion resulted in 32.89 ± 3.91 %ID eliminated at 24 h. Scintigraphy images showed uptake in the tumor and the activity in non-target organs was consistent with the biodistribution data at the same time points. Hence, these preliminary results showed important further characteristic of Fab(nimotuzumab)-HYNIC-99mTc as a molecular imaging agent of cancer.
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Technetium glucose complexes as potential cancer imaging agents. (Completo, 2015)
DAPUETO R
, AGUIAR RB
, MORENO M
, MACHADO CM
, MARQUES FL
, GAMBINI JP
, CHAMMAS R
, P. CABRAL
, PORCAL W
Bioorganic & Medicinal Chemistry Letters, v.: 25 19 4, p.:4254 - 4259, 2015
Palabras clave:
Cancer imaging agents Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Orgánica /
Imagenologia Molecular
Medio de divulgación: Internet
ISSN: 0960894X
DOI:
10.1016/j.bmcl.2015.07.098 GLUT's (facilitative glucose transporters) over-expression in tumor cells has allowed the detection of several cancer types, using a glucose analogue ((18)F-FDG) with PET images, worldwide. New glucose analogs radiolabeled with (99m)Tc could be a less-expensive and more accessible alternative for diagnosis using SPECT imaging. d-Glucose ((99m)Tc-IDAG) and 2-d-deoxyglucose ((99m)Tc-AADG) organometallic complexes were proposed and studied as potential (18)F-FDG surrogates. The glucose complexes were prepared and evaluated as potential cancer imaging agents, in a melanoma tumor model. Iminodiacetic acid (IDA) and aminoacetate (AA) moieties were chosen as chelating system for radiolabeling with (99m)Tc. Tumor uptake of the formed complexes was evaluated in B16 murine cell line in vitro and in vivo in melanoma bearing C57BL/6 mice. In vitro and in vivo studies were conducted with (18)F-FDG in order to compare the uptake of (99m)Tc-glucose complexes in the tumor model. IDAG and AADG compounds were synthesized and radiolabeled with (99m)TcO4(-) to obtain the (99m)Tc-IDAG and (99m)Tc-AADG complexes in high yield and stability. In vitro cell studies showed maximum uptake at 60 min for complexes, (99m)Tc-IDAG and (99m)Tc-AADG, with 6% and 2%, respectively. Biodistribution studies showed high tumor uptake one hour post-injection, reaching tumor-to-muscle ratios of 12.1 ± 3.73 and 2.88 ± 1.40 for (99m)Tc-IDAG and (99m)Tc-AADG, respectively. SPECT and micro-SPECT-CT images acquired after the injection of (99m)Tc-IDAG showed accumulation in tumor sites, suggesting that this glucose complex would be a promising candidate for cancer imaging
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Increasing the potency of neutralizing single-domain antibodies by functionalization with a CD11b/CD18 binding domain. (Completo, 2015)
ROSSOTTI MA
, GONZáLEZ-TECHERA A,
, GUARNASCHELLI J
, YIM L
, CAMACHO X
, FERNANDEZ M
, P. CABRAL
, LEIZAGOYEN C
, CHABALGOITY JA
, GONZáLEZ-SAPIENZA G
mAbs, v.: 7 5 , p.:820 - 828, 2015
Palabras clave:
FR2, framework 2 Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Medio de divulgación: Internet
E-ISSN: 19420870
DOI:
10.1080/19420862.2015.1068491 Recombinant single domain antibodies (nanobodies) constitute an attractive alternative for the production of neutralizing therapeutic agents. Their small size warrants rapid bioavailability and fast penetration to sites of toxin uptake, but also rapid renal clearance, which negatively affects their performance. In this work, we present a new strategy to drastically improve the neutralizing potency of single domain antibodies based on their fusion to a second nanobody specific for the complement receptor CD11b/CD18 (Mac-1). These bispecific antibodies retain a small size (~30 kDa), but acquire effector functions that promote the elimination of the toxin-immunocomplexes. The principle was demonstrated in a mouse model of lethal toxicity with tetanus toxin. Three anti-tetanus toxin nanobodies were selected and characterized in terms of overlapping epitopes and inhibition of toxin binding to neuron gangliosides. Bispecific constructs of the most promising monodomain antibodies were built using anti Mac-1, CD45 and MHC II nanobodies. When co-administered with the toxin, all bispecific antibodies showed higher toxin-neutralizing capacity than the monomeric ones, but only their fusion to the anti-endocytic receptor Mac-1 nanobody allowed the mice to survive a 10-fold lethal dose. In a model of delayed neutralization of the toxin, the anti- Mac-1 bispecific antibodies outperformed a sheep anti-toxin polyclonal IgG that had shown similar neutralization potency in the co-administration experiments. This strategy should have widespread application in the development of nanobody-based neutralizing therapeutics, which can be produced economically and more safely than conventional antiser
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Evaluation of Tricine and EDDA as Co-ligands for 99mTc-Labeled HYNIC-MSH Analogues for Melanoma Imaging (Completo, 2015)Trabajo relevante
M F GARCÍA
, ZHANG X
, F GALLAZZI
, M FERNáNDEZ
, MARÍA MORENO
, JP. GAMBINI
, PORCAL, W
, P. CABRAL
, QUINN, T.P.
Anti-Cancer Agents in Medicinal Chemistry, v.: 15 1 , p.:122 - 130, 2015
Palabras clave:
Melanoma HYNIC MSH analogues Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia, Imagen Molecular
Medio de divulgación: Internet
ISSN: 18715206
Anti-Cancer Agents in Medicinal Chemistry”, Vol. 15, No. 1, 2015.
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Imaging Radiation Doses and Associated Risks and Benefits in Subjects Participating in Breast Cancer Clinical Trials (Completo, 2015)
FRESCO, R.
, GONZALO SPERA
, CARLOS MEYER
, P. CABRAL
, JOHN R. MACKEY
The Oncologist, 2015
Palabras clave:
Medical imaging Breast cancer trials Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Oncología /
Medio de divulgación: Internet
ISSN: 10837159
E-ISSN: 1549490X
DOI:
10.1634/theoncologist.2014-0295 http://theoncologist.alphamedpress.org/content/early/2015/05/29/theoncologist.2014-0295.abstract
Abstract
BACKGROUND:
Medical imaging is commonly required in breast cancer (BC) clinical trials to assess the efficacy and/or safety of study interventions. Despite the lack of definitive epidemiological data linking imaging radiation with cancer development in adults, concerns exist about the risks of imaging radiation-induced malignancies (IRIMs) in subjects exposed to repetitive imaging. We estimated the imaging radiation dose and IRIM risk in subjects participating in BC trials.
MATERIALS AND METHODS:
The imaging protocol requirements in 10 phase III trials in the adjuvant and advanced settings were assessed to estimate the effective radiation dose received by a typical and fully compliant subject in each trial. For each study, the excess lifetime attributable cancer risk (LAR) was calculated using the National Cancer Institute's Radiation Risk Assessment Tool, version 3.7.1. Dose and risk calculations were performed for both imaging intensive and nonintensive approaches to reflect the variability in imaging performed within the studies.
RESULTS:
The total effective imaging radiation dose was 0.4-262.2 mSv in adjuvant trials and 26-241.3 mSv in metastatic studies. The dose variability resulted from differing protocol requirements and imaging intensity approaches, with computed tomography, multigated acquisition scans, and bone scans as the major contributors. The mean LAR was 1.87-2,410/100,000 in adjuvant trials (IRIM: 0.0002%-2.41% of randomized subjects) and 6.9-67.3/100,000 in metastatic studies (IRIM: 0.007%-0.067% of subjects).
CONCLUSION:
IRIMs are infrequent events. In adjuvant trials, aligning the protocol requirements with the clinical guidelines' surveillance recommendations and substituting radiating procedures with equivalent nonradiating ones would reduce IRIM risk. No significant risk has been observed in metastatic trials, and potential concerns on IRIMs are not justified.
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Development of (177)Lu-DOTA-Dendrimer and Determination of Its Effect on Metal and Ion Levels in Tumor Tissue. (Completo, 2015)
KOVACS L
, TASSANO M
, CABRERA M
, ZAMBONI CB
, FERNANDEZ M
, ANJOS RM
, P. CABRAL
Cancer Biotherapy & Radiopharmaceuticals, 2015
Palabras clave:
177Lu PAMAM G4 dendrimers neutron activation analyses Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Radiofarmacos de terapia
Medio de divulgación: Internet
ISSN: 10849785
E-ISSN: 15578852
DOI:
10.1089/cbr.2014 Dendrimers are synthetic nanomolecules with well-defined chemical structures. Different strategies have been used for radiolabeling dendrimers with different radioisotopes. In this study, the aim was to conjugate dendrimers with (177)Lu, to observe the in vivo behavior of the labeled compound and to measure the elementary changes in tumor tissue that could be caused by ionizing radiation. PAMAM G4 dendrimers conjugated with DOTA were labeled with (177)Lu. The radiolabeled compound was characterized and its stability was evaluated by reverse phase high performance liquid chromatography. Radiolabeling yield was >98% and stable for 24 hours. Biodistribution studies of (177)Lu-DOTA-dendrimers in C57BL/6 melanoma-bearing mice showed blood clearance with hepatic and renal depuration and tumor uptake. The concentrations of Br, Ca, Cl, Fe, K, Mg, Na, Rb, S, and Zn were determined in tumor tissues of C57BL/6 mice treated with (177)Lu-DOTA-dendrimers and in untreated mice. The results showed decreased concentrations of Br (62%), Ca (24%), Cl (51%), K (12%) and Na (60%) and increased concentrations of Fe (8%), Mg (28%), Rb (100%), S (6%) and Zn (4%) in tumor tissues of mice treated with (177)Lu-DOTA-dendrimers. These data may be useful to evaluate changes in tumor tissues as indicators of damage that could be caused by ionizing radiation.
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Linfoma no-hodgkin: empleo de emisores gamma para su diagnóstico. (Completo, 2015)
CAMACHO X
, A BANCHERO
, E RIVA
, P AUDICIO
, P. CABRAL
SALUD MILITAR, v.: 34 p.:46 - 57, 2015
Palabras clave:
Linfoma Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagenologia molecular
Medio de divulgación: Papel
E-ISSN: 15108023
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Evaluación de nanosistemas liposomales como agentes de tratamiento y diagnóstico oncológico. (Completo, 2015)
N LECOT
, ODDONE N
, FERNÁNDEZ, M
, BENECH J
, JP. GAMBINI
, P. CABRAL
SALUD MILITAR, v.: 34 p.:19 - 25, 2015
Palabras clave:
Nanotecnologia Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Nanotecnologia
Medio de divulgación: Papel
E-ISSN: 15108023
http://www.dnsffaa.gub.uy/Investigacion_y_Docencia/revista-salud-militar
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99m technetium-Tocilizumab Fragments As Molecular Imaging Agent for Multiple Myeloma (Resumen, 2015)
CAMACHO X
, CAMILA MACHADO
, M F GARCÍA
, FERNÁNDEZ, M
, OMAR ALONSO
, CERECETTO H
, CHAMMAS, R.
, JP. GAMBINI
, P. CABRAL
, E RIVA
Blood, v.: 126 p.:4214 - 4214, 2015
Palabras clave:
Multiple Myeloma Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagenologia
Medio de divulgación: Internet
ISSN: 00064971
E-ISSN: 15280020
Introduction: Multiple myeloma (MM) is a neoplasm of B lymphoid line that is characterized by clonal proliferation of malignant plasma cells in the bone marrow, producing monoclonal paraprotein (M) in blood and/or serum. Interleukin-6 (IL-6) is one of the key molecules related to growth, survival and proliferation of MM cells. Tocilizumab (TCZ) is a humanized monoclonal antibody directed against IL-6 receptor (IL-6R). When radiolabeled and used for tumor imaging, intact IgG exhibits high liver uptake. Antibody fragments (Fab´s) are quickly eliminated from blood and normal tissues (except kidneys), achieving high tumor-to-blood and tumor-to-normal tissue ratios with renal clearance. The aim of our work was to develop a 99mTc radiolabeled TCZ Fab´s fragment and to perform its chemical and biological evaluation in order to be used as a potential MM imaging agent for staging and restaging.
Methods: Antibody fragmentation was carried out with papain and, once purified, Fab´s(TCZ) fragments were identified and derivatized with NHS-HYNIC-Tfa as bifunctional coupling agent. MALDITOF/TOF was used to confirm all procedures. A mixture of Tricine/SnCl2.2H2O was added to Fab´s(TCZ)-Tfa-HYNIC and radiolabeled with 99mTcO4-. Radiochemical purity and in-vitro stability in saline, serum and different concentration of L-cysteine up to 4 h were analyzed by ITLC and HPLC. In-vitro binding assays were performed using U266 and MM1S cell lines up to 120 min. Biodistribution and SPECT/CT images were evaluated on healthy Balb/c mice and MM1S tumor-bearing Balb/c nude mice at 0.5, 2 and 4 h.
Results: Radiolabeling of HYNIC-Tfa-Fab´s(TCZ) was carried out in a fast, reproducible, easy, stable way showing high radiochemical purity and high specific activity. In vitro binding assays confirm that after its derivatization and radiolabeleing, Tfa-HYNIC-Fab`s(TCZ) does not interfere with the epitope recognition. In vivo biodistribution studies on healthy Balb/c mice and MM1S tumor-bearing Balb/c mice showed that 99mTc-HYNIC-Fab´s (TCZ) has significant renal uptake with neglectable uptake in other organs, indicating renal clearance. Tumor uptake was 12.84±1.80 %ID/g followed by 8.94±0.61 %ID/g and 3.05±1.49 %ID/g at 2 and 4 h, respectively. U266 tumor-to-muscle ratios were 5.79, 8.61 and 2.71 at 0.5, 2 and 4 h, respectively.Tumor uptake for MM1S tumor-bearing Balb/c nude mice was 10.05±1.32 %ID/g, 8.59±2.36 %ID/g and 3.88±0.68 %ID/g at 0.5, 2 and 4 h, respectively. MM1S tumor-to-muscle ratios were 6.32, 4.61 and 3.08 at 0.5, 2 and 4 h, respectively. Biodistribution data of 99mTc-HYNIC-Fab´s(TCZ) on U266 tumor-bearing Balb/c nude mice showed good tumor uptake and retention 0.5 h after its injection SPECT/CT images on healthy Balb/c mice and MM1S tumor-bearing Bal/c nude mice of 99mTc-HYNIC-Fab´s(TCZ) showed renal uptake and a discrete tumor uptake at 4 h p.i (Figure 1).
Conclusions: Labeling Fab´s(TCZ) with 99mTc using HYNIC was performed in an easy, fast, stable and reproducible way preserving its biological activity. Biodistribution and SPECT/CT imaging assays allowed us to observe and evaluate its potential role as a diagnostic molecular imaging agent for MM.
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Novel Mobile handheld and laptop based Indocyanine Green Detection Systems: report of first experience (Resumen, 2015)
JP. GAMBINI
, M. TASSANO
, VILA, R.
, MIGUEL FONT
, RODRIGO QUEIJO
, S LAZA
, QUINN, T.P.
, JUAN HERMIDA
, O. ALONSO
, P. CABRAL
Journal of Nuclear Medicine, v.: 56 p.:213 - 213, 2015
Palabras clave:
ICG Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Imagen por fluorescencia
Medio de divulgación: Internet
ISSN: 01615505
E-ISSN: 2159662X
Objectives After our first prototype presented at last year SNMMI (Figure 1A), we have developed a handheld mobile indocyanine green detection system (ICGDS) that incorporates a touchscreen enabled display in it (Figure 1B). The aim of our work is to describe ICG and 99mTc nanocolloid ICG (99mTc-N-ICG) guided surgical procedures performed with both of our portables ICGDS
Methods Our ICGDS has the specifications described in Table 1.We performed 6 breast cancer sentinel nodes (SN) procedures using 99mTc-N-ICG. Tracer was prepared as described by Brower in 2012. Injection of the tracer was performed periareolar subcutaneously.Lymphoscintigrapy and NIR images were acquired prior surgery. Intraoperative SN localization was performed using gamma probe and ICGDS. Also we performed perfusion evaluation of colon anastomosis, administrating 0.5 mg/kg ICG intravenously through peripheral vein.
Results The specifications of our ICGDS allowed us to clearly identify ICG. In the SN procedures using 99mTc-N-ICG, 6 fluorescent and radioactive SNs were easily identified using visual and acoustic cues. Visual cues enabled precise identification of SN due to its higher spatial resolution than gamma probe. In the colon anastomosis procedure, NIR images allowed perfusion evaluation, confirming the success of the procedure.
Conclusions Both of our portables ICG detection systems were able to detect ICG and 99mTc-N-ICG. These procedures were safe and were carried out without complications. ICGDS are becoming more available, but for the first time in literature we describe a handheld mobile touchscreen display ICGDS for portability and ease of use during surgery.
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Radiactividad en los cursos de química de la Licenciatura en Geología de la Facultad de Ciencias-UdelaR. (Completo, 2015)
M Tassano
, N Lecot
, M CABRERA
, R Castelli
, X Camacho
, F Garcia
, V Calzada
, CERECETTO, H.
, P. CABRAL
Educación en la Química, p.:26 - 30, 2015
Palabras clave:
Enseñanza Quimica
Medio de divulgación: Internet
ISSN: 23449683
E-ISSN: 03273504
http://educacionenquimica.com.ar/ojs/index.php/edenlaq/index
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99mTc-Labeled Bevacizumab via HYNIC for Imaging of Melanoma (Completo, 2014)
CAMACHO X
, F GARCIA
, V. CALZADA
, FERNÁNDEZ, M
, O. ALONSO
, JP. GAMBINI
, DE AGUIAR, R
, C LONGO
, CHAMMAS, R.
, PORCAL, W
, P. CABRAL
Journal of Analytical Oncology, v.: 3 1 , 2014
Palabras clave:
99mTc Angiogenesis Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia, Imagen Molecular
Medio de divulgación: Internet
ISSN: 19277210
E-ISSN: 19277229
DOI:
927-7229.2014.03.01.9 http://www.lifescienceglobal.com/journals/journal-of-analytical-oncology/volume-3-number-1
Vascular endothelial growth factor (VEGF) is one of the classic factors to tumour-induced angiogenesis in several types, including melanoma. Bevacizumab, a monoclonal antibody anti-VEGF, could be used as an imaging tool in clinical studies. The aim of this study was to radiolabeled Bevacizumab with 99mTc and evaluate it in vivo imaging properties. Bevacizumab was derivatized with the activated ester succinimidyl-hydrazinonicotinamide hydrochloride (Suc-HYNIC) as a bifunctional coupling agent. A mixture of Tricine/SnCl2.2H2O was added to Bevacizumab-HYNIC and radiolabeled with 99mTcO4-. The radiochemical stability of the radiolabeled sntibody was assessed. Biodistribution studies and SPECT-CT imaging were evaluated in healthy and tumor-bearing C57BL/6J mice at 1, 4 and 24 h (n =5). We demonstrated that 99mTc-HYNIC-Bevacizumab was stable over 24 h in solution and serum. In vivo biodistribution studies revealed tumor-to-muscle ratios of 99mTc-HYNIC-Bevacizumab was 9.28, 17.19 and 8.51 at 1, 4 and 24 h p.i. SPECT/CT imaging of tumor-bearing C57BL/6J mice showed tumor selective uptake of 99mTc-HYNIC-Bevacizumab. 99mTc-HYNIC-Bevacizumab could become a potential radiopharmaceutical to evaluate the expression of vascular endothelial growth factor (VEGF) in solid tumors and could be seen as a clinic tool for the screening of solid tumors that might respond to the Bevacizumab chemotherapy.
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Labeling Polyamidoamine (PAMAM) Dendrimers with Technetium-99m via Hydrazinonicotinamide (HYNIC) (Completo, 2014)
L KOVACS
, M TASSANO
, M. CABRERA
, FERNÁNDEZ, M
, W PORCAL
, ROBERTO M ANJOS
, P. CABRAL
Current Radiopharmaceuticals, v.: 7 2014
Palabras clave:
99mTc Dendrimer HYNIC Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia, Imagen Molecular, Nanotecnologia
Medio de divulgación: Internet
ISSN: 18744710
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[99mTc(CO)3]+ and [99mTcO2]+ Radiolabeled Cyclic Melanotropin Peptides for Melanoma SPECT Imaging. (Completo, 2014)
ZHANG X
, V TEICEIRA
, PORCAL, W
, P. CABRAL
, JP. GAMBINI
, FERNÁNDEZ, M
, F GALLAZZI
, QUINN, T.P.
Current Radiopharmaceuticals, v.: 7 1 , 2014
Palabras clave:
MC1-R melanoma, peptide radioimaging, technetium tetraamine, tricarbonyl. Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia, Imagen Molecular
Medio de divulgación: Internet
ISSN: 18744710
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Development of a portable Indocyanine Green (ICG) detection system to be used in ICG guided surgical procedures (Resumen, 2014)
JP. GAMBINI
, M. TASSANO
, VILA, R.
, MIGUEL FONT
, PEDRO QUEIJO
, S LAZA
, QUINN, T.P.
, JUAN HERMIDA
, O. ALONSO
, P. CABRAL
Journal of Nuclear Medicine, v.: 55 Sup. 1 , 2014
Palabras clave:
Optical imaging using near infrared ICG Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Imagen Molecular, Imagen Optica
Medio de divulgación: Internet
ISSN: 01615505
E-ISSN: 2159662X
-
Microwave-assisted Synthesis of HYNIC Protected Analogue for 99mTc Labeled Antibody - See more at: http://www.eurekaselect.com/126465/article#sthash.BQMUGsG1.dpuf (Completo, 2014)
MF GARCIA
, V CALZADA
, X CAMACHO
, E GOICOCHEA
, 1
, QUINN, T.P.
, PORCAL, W
, P. CABRAL
Current Radiopharmaceuticals, v.: 7 2 , p.:84 - 90, 2014
Palabras clave:
microwave-assisted Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Imagen Molecular
Medio de divulgación: Internet
ISSN: 18744710
DOI:
10.2174/1874471007666141128160449
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67GaDOTA-?-MSH: Specific melanoma molecular imaging agent (Resumen, 2014)
F Pevet
, MF Garcia
, M Fernandez
, M Moreno
, Omar Alonso
, Thomas Quinn
, JP Gmabini
, P. CABRAL
Journal of Nuclear Medicine, v.: 55 p.:1399 2014
Palabras clave:
molecular imaging Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 2159662X
http://jnm.snmjournals.org/
Objectives Melanoma?s incidence and mortality is increasing. The development of a melanoma selective radiotracer would benefit melanoma diagnosis and treatment monitoring. Ga-67 is a scintigraphic imaging radionuclide that is widely available. In this study, a cyclized alpha-melanocyte stimulating hormone (?-MSH) analog with high stability and affinity for the MC1R receptor (over expressed on melanoma cells) was labeled with Ga-67 and was evaluated as a specific melanoma imaging agent
Methods The 67Ga-DOTA-?-MSH synthesis was performed through direct labeling of DOTA-?-MSH with a solution of 67GaCl3 (pH 5) incubated for 30 minutes at 95 °C. The physicochemical controls were performed by reverse phase HPLC with a C18 column and monitor by UV and gamma detectors. The in-vitro radiochemical stability of the radiolabeled peptide was analyzed at 1, 2 and 24 h. Biodistribution studies and scintigraphic imaging were performed in normal mice and B16F10 melanoma tumor bearing C57BK mice.
Results Radiochemical purity of 67Ga-DOTA-?-MSH was >95%. In vitro radiochemical stability of the radiolabeled was >90% up to 24h. Biodistribution studies in normal and tumor bearing C57BK mice performed at 1 h post injection showed renal elimination of the radiolabeled peptide without significant uptake by other organs. Biodistribution performed at 1 h post injection in melanoma bearing mice showed significant melanoma uptake with a ?tumor-to-non-tumor? ratio >7. Scintigraphic images performed 1 h post injection of 67Ga-DOTA-?-MSH in C57BK melanoma tumor bearing mice, showed high tumor uptake without any significant uptake by other organs or tissues.
Conclusions 67Ga-DOTA-?-MSH can be considered a specific melanoma targeting agent with potential role in staging, follow up and evaluating response to therapy of melanoma. This preliminary results paths the way to its clinical evaluation.
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Incorporación de laboratorios al primer curso de química de las licenciaturas de la Facultad de Ciencias-Universidad de la República. (Completo, 2014)
M Couto
, MF Garcia
, N Lecot
, M Tassano
, R Castelli
, X Camacho
, M Cabrera
, P. CABRAL
, V Calzada
, CERECETTO, H.
Anuario Latinoamericano de Educación Química, v.: XXIX p.:124 - 129, 2014
Palabras clave:
Eduacacion
Medio de divulgación: Internet
ISSN: 0328087X
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A Novel Method to Radiolabel Stealth Liposome through 1,2- dimyristoyl-sn-glycero-3-phosphoethanolamine-N-DTPA with 99mTc and Biological Evaluation (Completo, 2013)
M CABRERA
, A MEDRANO
, N LECOT
, M FERNANDEZ
, M MORENO
, J P GAMBINI
, J A CHABALGOITY
, H BALTER
, 1
, P. CABRAL
Journal of Analytical Oncology, 2013
Palabras clave:
Liposomes Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia , nanotecnologia
Medio de divulgación: Papel
ISSN: 19277210
E-ISSN: 19277229
Purpose: To study surface technetium labeling of stealth DTPA-Liposome and to evaluate its potential as a molecular imaging tracer for both normal and melanoma-bearing mice.
The radiolabeling yield of liposomes was greater than 90% and showed good chemical and biological stability. Biodistribution studies in normal mice showed blood clearance with hepatic and renal depuration. Melanoma-bearing mice showed a similar pattern of biodistribution, with high tumor uptake allowing tumor imaging.
The developed method of surface radiolabeled DTPA-PEG-Liposomes with 99mTc was effective and stable in vivo
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[99mTc(CO)3]- radiolabeled Bevacizumab: In vitro and in vivo evaluation in melanoma model (Completo, 2013)
CAMACHO, X.
, GARCÍA, F.
, CALZADA, V.
, FERNÁNDEZ, M.
, CHABALGOITY, A.
, MORENO, M.
, DE AGUIAR, R
, ALONSO, O.
, GAMBINI, J.P.
, CHAMMAS, R.
, P. CABRAL
Oncology (Estados Unidos), 2013
Palabras clave:
Bevacizumab Melanoma scintigraphy Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
ISSN: 08909091
E-ISSN: 27677389
DOI:
338961
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Cell uptake mechanisms of PAMAM G4-FITC dendrimer in human myometrial cells (Completo, 2013)
ODDONE N
, ZAMBRANA, AI
, TASSANO M
, PORCAL, W
, P. CABRAL
, BENECH, JC.
Journal of Nanoparticle Research, 2013
Palabras clave:
PAMAM G4 dendrimer-FITC human myometrial cells Areas de conocimiento:
Ingeniería y Tecnología / Nanotecnología /
Nano-materiales /
Medio de divulgación: Papel
ISSN: 13880764
E-ISSN: 1572896X
DOI:
10.1007/s11051-013-1776-1
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Labeling and Biological Evaluation of 99m Tc-HYNIC-Trastuzumab as a Potential Radiopharmaceutical for In Vivo Evaluation of HER2 Expression in Breast Cancer (Completo, 2013)
CALZADA, V.
, F. GARCÍA
, M.FERNANDEZ
, PORCAL, W.
, T. QUINN
, ALONSO, O
, GAMBINI, JP
, P. CABRAL
World Journal of Nuclear Medicine, v.: 12 1 , p.:27 - 32, 2013
Palabras clave:
breast cancer Trastuzumab scintigraphy hydrazinonicotinamide 99mTc-labeling Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Papel
ISSN: 14501147
E-ISSN: 16073312
DOI:
10.4103/1450-1147.113953 http://www.wjnm.org/
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Cursos masivos: ampliando expectativas (Completo, 2013)
CALZADA, V.
, LECOT, N.
, GARCÍA, M.F.
, CABRERA, M.
, CAMACHO, X.
, TASSANO, M.
, CASTELLI, R.
, CZERWONOGORA, A.
, GOICOCHEA, E.
, GONZALEZ, M.
, P. CABRAL
, CERECETTO, H.
Educación Química, 2013
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Papel
ISSN: 0187893X
E-ISSN: 18708404
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Development of New Potential Multiple Myeloma Theragnostic Agents (Resumen, 2013)
CAMACHO X
, GARCIA MF
, FERNÁNDES M
, N ODDONE
, M MORENO
, GAMBINI JP
, E RIVA
, P. CABRAL
World Journal of Nuclear Medicine, v.: 12 2 , p.:226 - 226, 2013
Palabras clave:
99mTc 177Lu Tocilizumab Theragnostic agents Multiple Myeloma
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Internet
ISSN: 14501147
E-ISSN: 16073312
http://www.wjnm.org/
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A Potencial Theranostic Agent for EGF-R Expression Tumors: 177Lu- DOTA-Nimotuzumab (Completo, 2012)
V CALZADA
, X ZHANG
, M FERNANDEZ
, ARLHEE DÍAZ-MIQUELI
, NORMANDO IZNAGA-ESCOBAR
, DEUTSCHER, S.L.
, H BALTER
, T P QUINN
, P. CABRAL
Current Radiopharmaceuticals, v.: 2 2012
Palabras clave:
177Lu Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
radiofarmacia
Medio de divulgación: Papel
ISSN: 18744710
Abstract: In this work Nimotuzumab (monoclonal antibody, recognizes the EGF-R)was radiolabeled with 177Lu as a
potential cancer therapy radiopharmaceutical. In-vitro cell binding studies and in-vivo biodistribution and imaging studies
were performed to determine the radiochemical stability, targeting specificity and pharmacokinetics of the 177Lu-labeled
antibody. Nimotuzumab was derivatized with DOTA-NHS at room temperature for 2 hours. DOTA-Nimotuzumab was
radiolabeled with 177LuCl3 (15 MBq/mg) at 37ºC for 1 h. The radiochemical purity was assessed by ITLC, silica gel and
by RP-HPLC. Binding specificity studies were performed with EGF-R positive A431 human epithelial carcinoma and
EGF-R negative MDA-MB-435 breast carcinoma cells. Biodistribution studies were performed in healthy female CD-1
mice at 1 h, 4 h, 24 h, and A431 xenografted nude mice at 10 min, 1 h, 4 h, 24 h, 48 h, and 96 h. SPECT-CT imaging
studies were performed in A431 xenografted mice at 24 h post injection. DOTA-Nimotuzumab was efficiently labeled
with 177LuCl3 at 37°C. The in vitro stability of labeled product was optimal over 24 h in buffered saline and mouse serum.
Specific recognition of EGF-R by 177Lu-DOTA-Nimotuzumab was observed in A431 cell binding studies. Biodistribution
studies demonstrated increasing tumor uptake of 177Lu-DOTA-Nimotuzumab over time, with tumor to muscle ratios of
6.26, 10.68, and 18.82 at 4 h, 24 h, and 96 h post injection. Imaging of A431 xenografted mice showed high uptake in th e
tumor. 177Lu-DOTA-Nimotuzumab has the potential to be a promising therapy agent, which may be useful in the
treatment of patients with EGF-R positive cancer
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Radiolabeling and preliminary biological evaluation of 99mTc(CO)3 -labeled bevacizumab (Resumen, 2012)
CAMACHO X
, V. CALZADA
, M F GARCÍA
, M. FERNANDEZ
, S. DEUTSCHER
, QUINN T
, O. ALONSO
, JP. GAMBINI
, P. CABRAL
Journal of Nuclear Medicine, v.: 53 1 , p.:1679 2012
Palabras clave:
Bevacizumab Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
radiofarmacia
Medio de divulgación: Papel
ISSN: 01615505
E-ISSN: 2159662X
-
Synthesis and evaluation of 99mTc chelate-conjugated Bevacizumab. (Completo, 2012)
CAMACHO X
, GARCIA MF
, CALZADA V
, FERNÁNDES M
, PORCAL W
, ALONSO O
, GAMBINI, JP
, P. CABRAL
Current Radiopharmaceuticals, 2012
Palabras clave:
99mTc Bevacizumab HYNIC VEGF Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Internet
ISSN: 18744710
http://www.ncbi.nlm.nih.gov/pubmed/23035645
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Angiogenesis tumoral estrategias diagnosticas y terapeuticas (Completo, 2012)
X CAMACHO
, P. CABRAL
SALUD MILITAR, v.: 31 p.:34 - 48, 2012
Palabras clave:
Angiogenesis Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia , Farmacologia
Medio de divulgación: Papel
E-ISSN: 15108023
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Enseñansa de quimica en modalidad semipresencial: Nuevas experiencias. (Completo, 2012)
V CALZADA
, N LECOT
, M F GARCIA
, E REZZANO
, M L LAVAGGI
, A GZERWONOGORA
, H CERECETTO
, M GONZALEZ
, P. CABRAL
Anuario Latinoamericano de Educación Química, v.: XXVII p.:175 - 178, 2012
Palabras clave:
Enseñanza de Quimica Enseñanza Semipresencial Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Quimica General
Medio de divulgación: Papel
ISSN: 0328087X
-
177Lu-Bevacizumab a potential melanoma theragnostic agent (Resumen, 2012)
CAMACHO X
, CALZADA V
, GARCIA MF
, FERNÁNDES M
, DEUTSCHER S
, QUINN T
, ALONSO O
, GAMBINI JP
, P. CABRAL
Journal of Nuclear Medicine, v.: 53 1 1199, 2012
Palabras clave:
177Lu Bevacizumab Melanoma Theragnostic agent
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Papel
E-ISSN: 2159662X
http://jnumedmtg.snmjournals.org
-
99m Tc Thioglucose as a potential imaging agent in NHL (Resumen, 2012)
RIVA E; E RIVA
, FERNÁNDEZ, M
, R CASTELLI
, MARÍA MORENO
, J A CHABALGOITY
, P. CABRAL
Haematologica, 2012
Palabras clave:
LNH Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Hematología /
Medio de divulgación: Papel
ISSN: 03906078
E-ISSN: 15928721
-
99mTc-Tocilizumab nuevo agente de imagen molecular en Mieloma Múltiple (Completo, 2012)
GUTIERREZ, E.
, CAMACHO, X.
, CALZADA, V.
, FERNÁNDEZ, M
, GARCÍA, F.
, PORCAL, W.
, ODONNE, N.
, MORENO, M.
, BENECH, J.
, CHABALGOITY, JA.
, PANDIELLA, A.
, P. CABRAL
, RIVA, E.
SALUD MILITAR, p.:10 - 20, 2012
Palabras clave:
Tocilizumb Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Medio de divulgación: Papel
E-ISSN: 15108023
-
Enseñanza de quimica en modalidad semipresencial: Nuevas experiencias. (Completo, 2012)
V Calzada
, M F Garcia
, E Rezanno
, M L Lavaggi
, A GZERWONOGORA,
, CERECETTO, H.
, M Gonzalez
, P. CABRAL
Anuario Latinoamericano de Educación Química, v.: XXVII p.:175 - 178, 2012
Palabras clave:
Educacion
Medio de divulgación: Internet
ISSN: 0328087X
-
Synthesis of 99mTc-Nimotuzumab with Tricarbonyl Ion: In Vitro and IN Vivo Studies (Completo, 2011)
F GARCIA
, X CAMACHO
, V CALZADA
, M FERNANDEZ
, W PORCAL
, 1
, 1
, P. CABRAL
Current Radiopharmaceuticals, 2011
Palabras clave:
EGFR Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radioframacia
Medio de divulgación: Papel
ISSN: 18744710
http://www.ncbi.nlm.nih.gov/pubmed/22074480
-
Development of 99mTc(CO)3-dendrimer-FITC for cancer imaging (Completo, 2011)
M. TASSANO
, P AUDICIO
, GAMBINI JP
, M FERNANDEZ
, JP DAMIAN
, M MORENO
, 1
, CHABALGOITY JA
, BENECH J
, P. CABRAL
Bioorganic & Medicinal Chemistry Letters, v.: 21 p.:5598 - 5601, 2011
Palabras clave:
Dendrimeros Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagen Molecular- Radiofarmacia
Medio de divulgación: Papel
ISSN: 0960894X
DOI:
10.1016/j.bmcl.2011.06.079
-
99mTc-labeling and biological evaluation of conventional liposomes (Completo, 2011)
NAVARRO G
, P. CABRAL
, CABRERA M
, GAMBINI JP
, ALONSO O
, SAVIO E
ALASBIMN Journal, 2011
Palabras clave:
99mTc Liposomes
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Imagen Molecular- Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 07174055
www.alasbinmjournal.cl
-
Evaluation of 99mTc-Glucarate as a breast cancer imaging agent in a xenograft animal model (Completo, 2011)
JP. GAMBINI
, P. CABRAL
, O. ALONSO
, 2
, SAID DAIBES FIGUEROA
, ZHANG X
, LIXIN MA
, DEUTSCHER, S.L.
, QUINN T
Nuclear Medicine and Biology, v.: 37 8 , p.:255 - 260, 2011
Palabras clave:
99mTc Glucarate Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radifarmacia
Medio de divulgación: Papel
ISSN: 09698051
DOI:
10.1016/j.nucmedbio.2010.08.002
-
[177Lu]DOTA-anti-CD20: Labeling and pre-clinical studies (Completo, 2011)
P. AUDICIO
, G CASTELLANO
, M. TASSANO
, RIVA E; E RIVA
, P. CABRAL
, H. BALTER
, P. OLIVER
Applied Radiation and Isotopes, v.: 69 7 , p.:924 - 928, 2011
Palabras clave:
Anti CD 20 Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia- Hematologia
Medio de divulgación: Papel
ISSN: 09698043
-
99MTC-TRICARBONYL-TOCILIZUMAB: A NEW MOLECULAR IMAGING AGENT IN MULTIPLE MYELOMA (Resumen, 2011)
E RIVA
, CAMACHO X
, CALZADA V
, E GUTIERREZ
, FERNÁNDES M
, N ODDONE
, J BENECH
, M MORENO
, J CHABALGOITY
, P. CABRAL
Haematologica, v.: 96 2, p.:118 - 119, 2011
Palabras clave:
Tocilizumab Mieloma Múltiple 99mTc(CO)3 Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Papel
ISSN: 03906078
E-ISSN: 15928721
www.ehaweb.org/content/download/3065/18107/version/1/file/EHA16_ABS.pdf
-
Preparation and Primary Bioevaluation of 99mTc-labeled-1-thio-β-D-Glucose as Melanoma Targeting Agent (Completo, 2011)
R CASTELLI
, M FERNANDEZ
, W PORCAL
, 1
, 1
, A CHABALGOITY
, M MORENO
, P. CABRAL
Current Radiopharmaceuticals, v.: 4 4 , p.:355 - 360, 2011
Palabras clave:
99mTc Melanoma Thioglucose Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Papel
ISSN: 18744710
http://www.benthamscience.com/contents.php?JCode=CRP&Vol=00000004&Iss=00000004
-
Biological evaluation of Glucose and Deoxyglucose derivatives radiolabeled with [99mTc(CO)3(H2O)3]+ core as potential melanoma imaging agents. (Completo, 2011)
DAPUETO, R
, CASTELLI, R
, FERNÁNDEZ, M
, CHABALGOITY, JA
, MORENO, M
, JUAN PABLO GAMBINI
, P. CABRAL
, PORCAL, W
Bioorganic & Medicinal Chemistry Letters, v.: 21 p.:7102 - 7106, 2011
Palabras clave:
Glucose Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Papel
ISSN: 0960894X
-
177Lu-DOTA-Nimotuzumab: a new potential agent for cancer therapy (Resumen, 2011)
CALZADA, V
, F GARCIA
, CAMACHO X
, FERNÁNDEZ, M.
, GAMBINI, J.P.
, Paola Fabiana AUDICIO DA SILVA
, DIAS-MIQUELIS, ARLHEE
, IZNAGA-ESCOBAR, NORMANDO
, BALTER H
, DEUTSCHER, SUSAN
, QUINN T
, P. CABRAL
Journal of Labelled Compounds and Radiopharmaceuticals, v.: 54 1 S1-S588, 2011
Palabras clave:
177Lu DOTA-NHS-éster Nimotuzumab Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Papel
Lugar de publicación: 19th Inter Symp Radioph Sc.
ISSN: 03624803
E-ISSN: 10991344
wileyonlinelibrary.com
-
In vivo studies of poliamidoamine (PAMAM) 99mTc (CO)3Dendrimer FITC in murine breast tumor model as a nanocarrier of anti tumor drug (Resumen, 2011)
N ODONNE
, M TASSANO
, M FERNANDEZ
, M KRAMER
, A ZAMBRANA
, J A CHABALGOITY
, P. CABRAL
, J BENECH
Experimental Pathology and Health Sciences, v.: 5 2 , p.:60 - 60, 2011
Palabras clave:
Dendrimero
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Nanotecnologia
Medio de divulgación: Papel
ISSN: 16468422
http://www.patolex.org/revista/Experimental_Pathology/201102.html
-
Development of 99mTcHYNIC-Tocilizumab as Imaging Agent In Multiple Myeloma (Resumen, 2010)
RIVA E; E RIVA
, V. CALZADA
, EUGENIA GUTIÉRREZ
, FERNÁNDEZ, M
, ODDONE N
, MARÍA MORENO
, BENECH J
, JOSÉ A. CHABALGOITY
, P. CABRAL
, ATANASIO PANDIELLA
Blood, v.: 116 21 , p.:1116 2010
Palabras clave:
99mTc IL6R Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia- Hematologia
Medio de divulgación: Papel
ISSN: 00064971
E-ISSN: 15280020
http://bloodjournal.hematologylibrary.org/
-
Molecular tumor imaging with 99mTc radiopharmaceuticals using software fusion SPECT-CT. (Resumen, 2010)
DELGADO L
, 1
, NUÑEZ M
, NOBLE
, CORCHS, E.
, P. CABRAL
, 1
, 2
, A. QUAGLIATA
Journal of Clinical Oncology, v.: 28 p.:21060 - 21060, 2010
Palabras clave:
Glucarate SPECT CT Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Radiofarmacia
Medio de divulgación: Papel
ISSN: 0732183X
E-ISSN: 15277755
-
Synthesis and Assessment of 99mTc Chelate-Conjugated Bevacizumab for Development of Specific Radiopharmaceutical (Resumen, 2010)
CAMACHO, X
, GARCÍA, MF
, CALZADA, V
, FERNÁNDEZ, M
, GAMBINI, JP
, PORCAL, W.
, ALONSO, O
, P. CABRAL
, QUINN, T
Nuclear Medicine and Biology, v.: 37 6 , p.:697 2010
Palabras clave:
Radiopharmaceutical Bevacizumab 99mTc Chelate Areas de conocimiento:
Ciencias Médicas y de la Salud / Otras Ciencias Médicas /
Otras Ciencias Médicas /
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Medio de divulgación: Internet
ISSN: 09698051
-
177Lu-Anti-CD20 monoclonal antibody: Labeling and biologic evaluation (Resumen, 2010)
RIVA E; E RIVA
, P. AUDICIO
, P. CABRAL
, M. TASSANO
, CASTELLANO G
, FERNÁNDEZ, M
, OLIVER P
, H. BALTER
European Journal of Cancer, v.: 8 4 , p.:26 - 26, 2010
Palabras clave:
177Lu Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Medicina Química /
Hematologia
Medio de divulgación: Internet
ISSN: 09598049
-
In vitro and in vivo evaluation of [99mTc(CO)3]-radiolabeled ErbB-2-targeting peptides for breast carcinoma imaging (Completo, 2010)Trabajo relevante
X ZANG
, P. CABRAL
, QUINN T
, CALZADA V
, GAMBINI JP
, BALTER H
, 1
, DEUTSCHER, S.L.
Current Radiopharmaceuticals, v.: 3 4 , p.:308 - 321, 2010
Palabras clave:
HER2 Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia - Molecular Imagine
Medio de divulgación: Papel
ISSN: 18744710
http://www.bentham.org/crp
-
Fusion mediante software de Imagenes SPECT CT en la evaluacion de pacientes oncologicos (Completo, 2010)
NOBLE, J.
, GAMBINI, J.P.
, CORCHS, E.
, NÚÑEZ, M
, QUAGLIATA, A
, P. CABRAL
, VILA, R
, LAFERRANDERIE, M.
, DALBORA, R
, FRESCO, R
, SAVIO, E.
, DELGADO, L.
, ALONSO, O
Revista de Imagenología, v.: 13 p.:2 2010
Palabras clave:
SPECT/CT Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
Lugar de publicación: MONTEVIDEO
ISSN: 07979193
-
Marcación de 177 Lu-CCMSH(Arg11)Re-DOTA y evaluación biológica en ratones C57 BK inducidos con céluas B16 F-1 (Resumen, 2009)
CABRERA, M.
, FERNÁNDEZ, M.
, KATZ, A.
, AUDICIO, P.
, REZZANO, E.
, BRUGNINI, A.
, CHABALGOITY, A.
, GAMBINI, J.P.
, ALONSO, A.
, ZHANG, X.
, DEUTSCHER, S.
, QUINN, T.
, P. CABRAL
, BALTER, H.
ALASBIMN Journal, v.: 11 43 , 2009
Palabras clave:
Lu 177 péptidos radiofarmacos terapeuticos
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Internet
Lugar de publicación: Chile
E-ISSN: 07174055
http://www.alasbimnjournal.cl/alasbimn/index.php?option=com_content&task=view&id=633&Itemid=208
-
99mTc-DTPA-Liposomas: desarrollo y evaluación biológica en ratones C57 black sanos y portadores de melanoma (Resumen, 2009)
CABRERA, M.
, FERNÁNDEZ, M.
, NAVARRO, G.
, LECOT, N.
, GAMBINI, J.
, ALONSO, O.
, BRUGNINI, A.
, CHABALGOITY, A.
, MORILLA, M.
, ROMERO, E.
, SAVIO, E.
, P. CABRAL
, BALTER, H.
ALASBIMN Journal, v.: 11 43 , 2009
Palabras clave:
radiofarmacos terapeuticos Tc-DTPA
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Internet
Lugar de publicación: Chile
E-ISSN: 07174055
http://www.alasbimnjournal.cl/alasbimn/index.php?option=com_content&task=view&id=631&Itemid=208
-
Sterically stabilized 177Lu de DTPA-Liposomes and 177Lu DTPA-Liposomes:develoment of labelling procedure and biologic evaluation (Resumen, 2009)
M CABRERA
, M FERNANDEZ
, N LECOT
, J P GAMBINI
, O ALONSO
, F GARCIA
, P. CABRAL
, H BALTER
World Journal of Nuclear Medicine, v.: 8 4 , p.:249 - 250, 2009
Palabras clave:
177Lu Liposomes Sterically stabilized Liposomes
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Medio de divulgación: Papel
ISSN: 14501147
E-ISSN: 16073312
-
hR3-HYNIC-99mTc: síntesis, marcación y su evaluación biológica como potencial radiofármaco de diagnóstico de tumores con sobreexpresión de HER3 (Resumen, 2009)
CALZADA, V.
, GARCÍA, F.
, FERNÁNDEZ, M.
, GAMBINI, J.P.
, CABRERA, M.
, TASSANO, M.
, P. CABRAL
, BALTER, H.
ALASBIMN Journal, v.: 1 43 , 2009
Palabras clave:
hR3-HYNIC-Tc99m radiofarmacos de diagnóstico
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Internet
Lugar de publicación: Chile
E-ISSN: 07174055
http://www.alasbimnjournal.cl/alasbimn/index.php?option=com_content&task=view&id=629&Itemid=208
-
Dendrímeros PAMAM G4 marcados a través de [99mTc(CO39(H2O)3]+ como potencial radiofármaco para la detección de procesos tumorales (Resumen, 2009)
TASSANO, M.
, AUDICIO, P.
, FERNÁNDEZ, M.
, REZZANO, E.
, GAMBINI, J.P.
, MORILLA, M.J.
, ROMERO, E.
, BRUGNINI, A.
, CHABALGOITY, A.
, P. CABRAL
, BALTER, H.
ALASBIMN Journal, v.: 11 43 , 2009
Palabras clave:
Nanotecnologia radiofarmacos de diagnóstico PAMAM G4
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Internet
Lugar de publicación: Chile
E-ISSN: 07174055
http://www.alasbimnjournal.cl/alasbimn/index.php?option=com_content&task=view&id=640&Itemid=208
-
Evaluación de pacientes oncológicos con radiofármacos de 99mTc mediante software de fusión de imágenes SPECT-CT (Resumen, 2009)
GAMBINI, J.P.
, NÚÑEZ, M.
, QUAGLIATA, A.
, P. CABRAL
, VILA, R.
, NOBLE, J.
, CORCHS, E.
, SAVIO, E.
, DELGADO, L.
, ALONSO, O.
ALASBIMN Journal, v.: 12 46 , 2009
Palabras clave:
cancer SPECT-CT
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Internet
Lugar de publicación: Santiago de Chile, Chile
E-ISSN: 07174055
www.alasbimnjournal.cl
-
Bevacizumab-HYNIC-99mTc: marcador molecular de angiogenesis tuoral (Resumen, 2009)
BALTER, H.
, P. CABRAL
, CALZADA, V.
, CAMACHO, X.
, GARCÍA, F.
, FERNÁNDEZ, M.
, BRUGNINI, A.
, CHABALGOITY, A.
, GAMBINI, J.P.
, ALONSO, O.
ALASBIMN Journal, v.: 11 43 , 2009
Palabras clave:
Tc99m Diagnostico , angiogenesis
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Internet
Lugar de publicación: Chile
E-ISSN: 07174055
http://www.alasbimnjournal.cl/alasbimn/index.php?option=com_content&task=view&id=630&Itemid=208.
-
Sterically stabilized 177Lu de DTPA-Liposomes and 177Lu DTPA-Liposomes:develoment of labelling procedure and biologic evaluation (Resumen, 2009)
N LECOT
, M CABRERA
, P. CABRAL
, M FERNANDEZ
, J P GAMBINI
, F GARCIA
, H BALTER
, O ALONSO
World Journal of Nuclear Medicine, v.: 8 4 , p.:249 - 250, 2009
Palabras clave:
177Lu Liposomes Sterically stabilized Liposomes
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Medio de divulgación: Papel
ISSN: 14501147
E-ISSN: 16073312
www.wjnm.org
-
177-Lu-Anti-CD20 monoclonal antibody A potential radiopharmaceutical for treatment of non-Hodgkins lymphoma. (Resumen, 2009)
OLIVER P
, H. BALTER
, P. CABRAL
, P. AUDICIO
, CASTELLANO G
, REZZANO E
, FERNÁNDEZ, M
World Journal of Nuclear Medicine, v.: 8 4 , p.:248 - 249, 2009
Palabras clave:
177Lu Dendrimer LNH
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Papel
ISSN: 14501147
E-ISSN: 16073312
http://www.wjnm.org
-
Aplicación de métodos modelo-dependiente y modelo-independiente en el desarrollo de una formulación de comprimidos de Captopril (Completo, 2009)
NAVARRO G
, P. CABRAL
Revista Colombiana de Ciencias Químico Farmacéuticas, v.: 38 1 , p.:19 - 30, 2009
Palabras clave:
captopril perfil de disolución Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
tecnologia Farmaceutica
Medio de divulgación: Papel
ISSN: 00347418
E-ISSN: 19096356
www.farmacia.unal.edu.co
-
177Lu-EDTMP: Radiofármaco para terapia paliativa del dolor producido por metástasis óseas (Resumen, 2009)
TRINDADE, V
, RODRIGUEZ, G
, OLIVER, P
, P. CABRAL
, FERNÁNDEZ M
, PAOLINO, A
, J GAUDIANO
, H BALTER
ALASBIMN Journal, v.: 11 43 , 2009
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Medio de divulgación: Internet
E-ISSN: 07174055
www.alasbimnjournal/cl
-
Evaluation of patients with head and neck cancer by means of 99mTc-Glucarate (Completo, 2009)
GAMBINI, J.P.
, NÚÑEZ, M.
, P. CABRAL
, LAFERRANDERIE, M.
, NOBLE, J.
, CORCHS, E.
, DALBORA, R
, SAVIO, E.
, DELGADO, L.
, ALONSO, O.
Journal of Nuclear Medicine Technology, v.: 37 4 , p.:229 - 232, 2009
Palabras clave:
99mTc-glucarate head and neck tumors SPECT-CT software fusion Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
Lugar de publicación: Reston, VA.
ISSN: 00914916
E-ISSN: 15355675
-
177-Lu-Bevacizumab: a novel therapeutic radiopharmaceutical (Resumen, 2009)
CAMACHO, X.
, CALZADA, V.
, GAMBINI, J.P.
, ALONSO, O.
, FERNÁNDEZ, M.
, BRUGNINI, A.
, CHABALGOITY, A.
, P. CABRAL
, BALTER, H.S.
World Journal of Nuclear Medicine, v.: 8 4 , p.:250 2009
Palabras clave:
177-Lu-Bevacizumab
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
Lugar de publicación: Lemesos, Chipre
ISSN: 14501147
E-ISSN: 16073312
-
177Lu-Dendrimer PAMAM G4:Evaluation in a murine melanoma model (Resumen, 2009)
TASSANO, M
, AUDICIO, P.
, FERNÁNDEZ, M
, GAMBINI, J.P.
, ALONSO, O.
, BRUGNINI, A.
, CHABALGOITY, A.
, P. CABRAL
, BALTER, H.
World Journal of Nuclear Medicine, v.: 8 4 , 2009
Palabras clave:
dendrimero-177Lu modelo murino
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Biológicas /
Métodos de Investigación en Bioquímica /
Medio de divulgación: Papel
ISSN: 14501147
E-ISSN: 16073312
-
Development of 177Lu-Dendrimer-Anti-CD20: preliminary studies (Resumen, 2009)
TASSANO, M
, AUDICIO, P.
, REZZANO, E.
, GAMBINI, J.P.
, ALONSO, O.
, RIVA, E.
, OLIVER, P.
, P. CABRAL
, BALTER, H.
World Journal of Nuclear Medicine, v.: 8 4 , p.:247 - 248, 2009
Palabras clave:
177Lu-Dendrimer-Anti-CD20
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
Lugar de publicación: Lemesos, Chipre
ISSN: 14501147
E-ISSN: 16073312
www.alasbimnjournal.cl
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Marcado de Liposimas convencionales con 99mTc por vía directa y estudio centellográfico en ratones portadores de tumor (Resumen, 2008)
G. NAVARRO
, P. CABRAL
, M. CABRERA
, M. FERNANDEZ
, H. BALTER
, E. SAVIO
ALASBIMN Journal, v.: 10 39 , 2008
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Radiofarmacia , Radioquimica
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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HYNIC-Trastuzumab-99mTc: Síntesis, marcación y biodistribucion en ratones normales y con adenocarcinoma mamario (Resumen, 2008)
P. CABRAL
, A. ROBLES
, V. CALZADA
, H. BALTER
, E. SAVIO
ALASBIMN Journal, v.: 10 39 , 2008
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Utilidad de los métodos de simulación Monte Carlo (Penélope) en la selección de radionucleidos terapéuticos (Resumen, 2008)
P. CABRAL
, G. CASTELLANO
, P. AUDICIO
, A. KATZ
, H. BALTER
ALASBIMN Journal, v.: 10 39 , 2008
Palabras clave:
Monte Carlo
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Is 99mTc Glucarate a tracer of tumor necrosis? Comparison with 18F-FDG-PET in an animal model of breast cancer and preliminary clinical experience in oncology patients (Completo, 2008)
JP. GAMBINI
, T. QUINN
, P. CABRAL
, O. ALONSO
, NÚÑEZ, M.
, E. SAVIO
, FIGUEROA, S.
, ZHANG X
ALASBIMN Journal, v.: 10 40 , 2008
Palabras clave:
PET 18 F
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
Lugar de publicación: http://www.alasbimnjournal.cl/
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Intracoronary radionuclide therapy with liquid 188Re-filled balloons; radiopharmaceutical and dosimetric studies (Completo, 2008)Trabajo relevante
P. CABRAL
, E. SAVIO
, A. KATZ
, A. BADANO
, O. ALONSO
, G. CASTELLANO
ALASBIMN Journal, v.: 10 41 , 2008
Palabras clave:
188Re Braquiterapia
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
Lugar de publicación: http://www.alasbimnjournal.cl/
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Nanosistemas dendriméricos: Marcación a través de [ 99mTC(CO)3(H20)3r] y distribución biológica en modelo animal normal y patológico (Resumen, 2008)
P. CABRAL
, M. TASSANO
, P. AUDICIO
, JP. GAMBINI
, M. FERNANDEZ
, H. BALTER
ALASBIMN Journal, v.: 10 39 , 2008
Palabras clave:
nantecnologia
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Diseño de liposomas para transporte de fármacos (Completo, 2008)
G. NAVARRO
, P. CABRAL
, A MALANGA
, 2
Revista Colombiana de Ciencias Químico Farmacéuticas, v.: 37 2 , p.:212 - 223, 2008
Palabras clave:
Liposomas Diclofenac Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
tecnologia Farmaceutica
Medio de divulgación: Papel
ISSN: 00347418
E-ISSN: 19096356
http://www.farmacia.unal.edu.co/
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17. DTPA-Liposome and PEG-DTPA-Liposome: Comparison of Radiolabelling, In-vitro Stability, Biodistribution and Imaging in Normal an Tumor Model (Resumen, 2008)
P. CABRAL
, M. CABRERA
, G. NAVARRO
, BALTER, H.
, O. ALONSO
, JP. GAMBINI
European Journal of Nuclear Medicine and Molecular Imaging, v.: 35 2 , 2008
Palabras clave:
99mTc Liposomas Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radifarmacia- nanotecnologia
Medio de divulgación: Papel
ISSN: 16197070
E-ISSN: 16197089
http://www.springer.com/medicine/nuclear+medicine/journal/
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Preliminary evaluation with co-registration and fusionof SPECT and CT images using 99mTc-Glucarate as a tumor-seeking radiopharmaceutical (Resumen, 2008)
ALONSO, O.
, GAMBINI, J.P.
, NÚÑEZ, M.
, P. CABRAL
, FRESCO, R.
, NOBLE, J.
, CORCHS, E.
, SANTANDER, G.
, LAFERRANDERIE, M.
, PIUMA, L.
, MARTÍNEZ, E.
, VILA, R.
, DALBORA, R
, SAVIO, E.
, DELGADO, L.
European Journal of Nuclear Medicine and Molecular Imaging, v.: 35 2 , 2008
Palabras clave:
99mTc-glucarate fusion SPECT CT Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
Lugar de publicación: Heidelberg, Germany.
ISSN: 16197070
E-ISSN: 16197089
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HYNIC-Trastuzumab-99mTc: Síntesis, marcación y biodistribucion en ratones normales y con adenocarcinoma mamario (Resumen, 2008)
P. CABRAL
, A. ROBLES
, V. CALZADA
, BALTER, H.
, E. SAVIO
ALASBIMN Journal, v.: 10 39 , 2008
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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131I-anti-CD20: estudio de su radiofarmacocinética y dosimetría en un modelo animal de experimentación (Resumen, 2008)
OLIVER, P
, ROBLES, A
, P. CABRAL
, FERNÁNDEZ, M
, LOPEZ, A
, Paola Fabiana AUDICIO DA SILVA
, BALTER, H.
ALASBIMN Journal, v.: 10 39 , 2008
Palabras clave:
investigación preclínica Bioevaluación
Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl
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177 Lu - AntiCD-20: Potencial radiofármaco para el tratamiento del linfoma no Hodgkin. (Resumen, 2008)
VICTORIA CALZADA
, H BALTER
, P. CABRAL
, M TASSANO
, JP GAMBINI
ALASBIMN Journal, 2008
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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131I-anti-CD20: estudio de su radiofarmacocinética y dosimetría en un modelo animal de experimentación. (Resumen, 2008)
PATRICIA OLIVER
, ANA ROBLES
, P. CABRAL
, ANDREA LOPEZ
, MARCELO FERNÁNDEZ
, Paola Fabiana AUDICIO DA SILVA
, HENIA BALTER
ALASBIMN Journal, v.: 10 39 2008
Palabras clave:
131I anti-CD20
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Papel
E-ISSN: 07174055
-
Preliminary evaluation with co-registration and fusionof SPECT and CT images using 99mTc-Glucarate as a tumor-seeking radiopharmaceutical (Resumen, 2008)
ALONSO, O.
, GAMBINI, J.P.
, NÚÑEZ, M.
, P. CABRAL
, FRESCO, R.
, NOBLE, J.
, CORCHS, E.
, SANTANDER, G.
, LAFERRANDERIE, M.
, PIUMA, L.
, MARTÍNEZ, E.
, VILA, R.
, DALBORA, R
, SAVIO, E.
, DELGADO, L.
European Journal of Nuclear Medicine and Molecular Imaging, v.: 35 2 , 2008
Palabras clave:
99mTc-glucarate fusion SPECT CT Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Papel
Lugar de publicación: Heidelberg, Germany.
ISSN: 16197070
E-ISSN: 16197089
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Labelling and biological evaluation of anti-CD20 for treatment of Non-Hodgkin’s lymphoma. (Completo, 2008)Trabajo relevante
OLIVER, P
, OLIVER, P.
, ROBLES, A
, TRINDADE, V
, P. CABRAL
, TORTAROLO, V
, NAPPA, A
, RODRIGUEZ, G
, BALTER, H
Proceedings Series - International Atomic Energy Agency, v.: 2 p.:63 - 70, 2008
Palabras clave:
Preclinical studies Radioimmunotherapy Mab anti-CD20
Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Medio de divulgación: Papel
ISSN: 00741884
E-ISSN: 19907893
http://www.iaea.org/publications
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99mTc(CO)3 Labeled ErbB-2 avid peptides for breast cancer Imaging (Resumen, 2008)
BALTER, H.
, P. CABRAL
, JP. GAMBINI
, TRINDADE, V
, M.FERNANDEZ
, V. CALZADA
, M. TASSANO
, ZHANG, X
, S. DEUTSCHER
, T. QUINN
Journal of Nuclear Medicine, v.: 49 1 , p.:249 2008
Palabras clave:
ErbB-2 Tricarbonil-Tc-99m Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Papel
Lugar de publicación: USA
ISSN: 01615505
E-ISSN: 2159662X
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Pamam G4 Dendrimers labelled through 99mTcTricarbonyl and evaluation in mice with Melanoma induced tumour model (Resumen, 2008)
BALTER, H.
, TASSANO, M.
, AUDICIO, P.
, FERNÁNDEZ, M.
, GAMBINI, J.P.
, ALONSO, O.
, MORILLA, M.J.
, PRIETO, J.
, ROMERO, E.
, BRUGNINI, A.
, P. CABRAL
, CHABALGOITY, P.
European Journal of Nuclear Medicine and Molecular Imaging, v.: 35 2 , p.:154 - 180, 2008
Palabras clave:
radiofarmacos terapeuticos 99m Tc Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Papel
ISSN: 16197070
E-ISSN: 16197089
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Comportamiento radiofarmacológico y biológico de la rhTSH marcada con 131I. (Resumen, 2007)
A. ROBLES
, P. CABRAL
, P. AUDICIO
, JP. GAMBINI
, M. FERNANDEZ
ALASBIMN Journal, v.: 9 35 , 2007
Palabras clave:
131I
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Laboratory evaluation of therapeutic biomolecules labelled with radioiodine and lutetium (Completo, 2007)
BALTER, H
, BALTER, H.
, OLIVER, P.
, ROBLES, A
, BEROIS, N
, P. CABRAL
, NAPPA, A
, LOPEZ, A
, TRINDADE, V
, RODRIGUEZ, G
, LANZZERI, S
, VERDERA, S
Technical Reports Series (International Atomic Energy Agency), v.: 16 p.:269 - 293, 2007
Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Medio de divulgación: Papel
ISSN: 00741914
http://www.iaea.org/publications
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Matrices Hidrofilicas como agentes moduladores de liberación de fármacos (Completo, 2007)
G. NAVARRO
, P. CABRAL
SALUD MILITAR, v.: 29 1 , p.:9 - 17, 2007
Palabras clave:
Matrices hidrofilicas Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Farmacotecnia
Medio de divulgación: Papel
E-ISSN: 15108023
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Estudio de biodistribución de liposomas pH sensibles (Resumen, 2007)
NAVARRO, G.
, TRINDADE, V.
, P. CABRAL
, FERNÁNDEZ, M.
, AUDICIO, P.
, REZZANO, E.
, MALANGA, A.
, O. MARTIN
, MORILLA, M.J.
, ROMERO, E.
, SAVIO, E.
, BALTER, H.
ALASBIMN Journal, v.: 9 35 , 2007
Palabras clave:
nantecnologia
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia- nanotecnologia
Medio de divulgación: Internet
E-ISSN: 07174055
-
Dendrímeros PAMAM G4: marcación mediante [[99m]Tc(CO)[3](H2O)[3]][+] y estudios de biodistribución en ratones sanos y portadores de tumor (Resumen, 2007)
P. CABRAL
, P. AUDICIO
, M. FERNANDEZ
, G. NAVARRO
, E. REZZANO
, H. BALTER
ALASBIMN Journal, v.: 9 35 , 2007
Palabras clave:
nantecnologia
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia- nanotecnologia
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Radiolabelled DOTA-TATE: its evaluation for targeted radiotherapy. (Completo, 2006)
HENIA BALTER
, PATRICIA OLIVER
, ANA ROBLES
, NIBIA BEROIS
, ANDRES NAPPA
, P. CABRAL
, ANDREA LOPEZ
, GRACIELA RODRIGUEZ
, SILVIA VERDERA
World Journal of Nuclear Medicine, v.: 53 p.:181 - 187, 2006
Palabras clave:
Radioterapia DOTA-TATE
Areas de conocimiento:
Ciencias Naturales y Exactas / Ciencias Químicas /
Química Inorgánica y Nuclear /
Medio de divulgación: Papel
ISSN: 14501147
E-ISSN: 16073312
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Marcado de anticuerpo monoclonal anti-CEA con 99mTc-tricarbonilo: estudios de caracterizació (Resumen, 2006)
P. CABRAL
, A. ROBLES
, H. BALTER
ALASBIMN Journal, v.: 8 31 , 2006
Palabras clave:
anti-CEA con 99mTc-tricarbonilo:
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Radiofarmacia
Medio de divulgación: Internet
E-ISSN: 07174055
http://www.alasbimnjournal.cl/
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Desarrollo de Captopril 25, comprimidos (Completo, 2005)
G. NAVARRO
, P. CABRAL
SALUD MILITAR, v.: 27 1 , p.:10 - 17, 2005
Palabras clave:
captopril Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Farmacotecnia
Medio de divulgación: Papel
E-ISSN: 15108023
-
Radiolabelled DOTA-TATE: its evaluation for targeted radiotherapy (Completo, 2005)
BALTER, H
, OLIVER, P
, ROBLES, A
, BEROIS, N
, NAPPA, A
, P. CABRAL
, LOPEZ, A
, RODRIGUEZ, G
, VERDERA, S
ALASBIMN Journal, v.: 8 30 , 2005
Palabras clave:
radiotherapy cancer
Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Medio de divulgación: Papel
E-ISSN: 07174055
http://www2.alasbimnjournal.cl/alasbimn/CDA/sec_b/0,1206,SCID%253D15275,00.html
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Anti-CD-20-188Re: Labelling and biological performance (Resumen, 2005)
OLIVER, P
, TRINDADE, V
, P. CABRAL
, RODRIGUEZ, G
, NAPPA, A
, CALDEIRA, J
, TORTAROLO, V
, ROBLES, A
, BALTER, H.
Nuclear Medicine Review, v.: 8 Suppl. A , p.:19 - 19, 2005
Areas de conocimiento:
Ciencias Médicas y de la Salud / Biotecnología de la Salud /
Biotecnología relacionada con la Salud /
Medio de divulgación: Papel
E-ISSN: 15069680
-
Quality control of 188W/188Re Generator Perfomance (Completo, 2003)
P. CABRAL
, E. SAVIO
, A. ROBLES
ALASBIMN Journal, v.: 22 6 , 2003
Palabras clave:
188 Re
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Básica /
Farmacología y Farmacia /
Rdioquimica
Medio de divulgación: Internet
E-ISSN: 07174055
www.alasbinmjournal.cl
-
Radiación endovascular con 188Re para la prevención de restenosis post-angioplastia: resultados preliminares. (Resumen, 2003)
ALONSO, O.
, PEIX, A.
, GUTIERREZ, C.
, MOREIRA, E.
, LLERENA, L.
, PINEDA, M.
, GAUDIANO, J.
, LÓPEZ, A.
, ECHEVERRI, D.
, LLUBERAS, R.
, PONCE, F.
, CORZO, O.
, SAVIO, E.
, LÓPEZ, L.
, DURÁN, A.
, GUERRERO, I.
, P. CABRAL
, PADHY AK
ALASBIMN Journal, v.: 21 5 , 2003
Palabras clave:
braquiterapia intracoronaria Re-188
Areas de conocimiento:
Ciencias Médicas y de la Salud / Medicina Clínica /
Radiología, Medicina Nuclear y Diagnóstico por Imágenes /
Medio de divulgación: Internet
Lugar de publicación: Santiago de Chile, Chile.
E-ISSN: 07174055
http://www.alasbimnjournal.cl