Citologia aspirativa com agulha fina e histopatologia: valor e significado para o diagnóstico e prognóstico do câncer de mama em cadelas

Pós-graduação em Medicina Veterinária - FMVZ

Expressão de fator de crescimento semelhante à insulina (IGF-1), alvo da rapamicina em mamíferos (M-TOR), fator de célula tronco (SCF) e receptor C-KIT (CD117) em mastocitomas cutânios caninos em lâminas de arranjo de matriz tecidual (TMA)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização clínica, citopatológica e bioquímica do câncer mamário de cadelas sem raça definida

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Construction of a recombinant adenovirus co-expressing truncated human prostate-specific membrane antigen and mouse 4-1BBL genes and its effect on dendritic cells

Our aim was to construct a recombinant adenovirus co-expressing truncated human prostate-specific membrane antigen (tPSMA) and mouse 4-1BBL genes and to determine its effect on dendritic cells (DCs) generated from bone marrow suspensions harvested from C57BL/6 mice for which the effect of 4-1BBL on DCs is not clear, especially during DCs processing tumor-associated antigen. Replication deficient adenovirus AdMaxTM Expression System was used to construct recombinant adenovirus Ad-tPSMA-internal ribosome entry site-mouse 4-1BBL (Ad-tPSMA-IRES-m4-1BBL) and Ad-enhanced green fluorescent protein. Day 7 proliferating DC aggregates generated from C57BL/6 mice were collected as immature DCs and further mature DCs were obtained by lipopolysaccharide activated immature DCs. After DCs were exposed to the recombinant adenovirus with 250 multiplicity of infection, the expression of tPSMA and m4-1BBL proteins were detected by Western blot, and the apoptosis and phenotype of DCs were analyzed by flow cytometry. Cytokines (IL-6 and IL-12) in the supernatant were detected by enzyme-linked immunosorbent assay (ELISA). Proliferation of T cells was detected by allogeneic mixed lymphocyte reactions. The tPSMA and m4-1BBL proteins were expressed correctly. The apoptosis rate of DCs transfected with Ad-tPSMA-IRES-m4-1BBL was 14.6%, lower than that of control DCs. The expression of co-stimulatory molecules [CD80 (81.6 ± 5.4%) and CD86 (80.13 ± 2.81%)] up-regulated in Ad-tPSMA-IRES-m4-1BBL-pulsed DCs, and the level of IL-6 (3960.2 ± 50.54 pg/mL) and IL-12 (249.57 ± 12.51 pg/mL) production in Ad-tPSMA-IRES-m4-1BBL-transduced DCs were significantly higher (P < 0.05) than those in control DCs. Ad-tPSMA-IRES-m4-1BBL induced higher T-cell proliferation (OD450 = 0.614 ± 0.018), indicating that this recombinant adenovirus can effectively enhance the activity of DCs.

Cáncer gástrico en Colombia entre 2000 y 2009

Introducción: De todos los casos de cáncer en el mundo el 80% se presentan en países en vía de desarrollo siendo el cáncer de estómago o cáncer gástrico la segunda causa de muerte por cáncer en el mundo con aproximadamente 700.000 muertes cada año. En Colombia, el cáncer gástrico es la primera causa de muerte por tumores malignos en ambos sexos, aún cuando no es la primera neoplasia en frecuencia. Metodología: Estudio observacional descriptivo, de registros de defunción del DANE, Colombia 2000 a 2009. Se analizaron tasas anuales crudas y por grupos de edad, género, procedencia geográfica, estado civil, nivel educativo y área de residencia habitual estableciendo diferencias estadísticas entre las variables y sus categorías. Resultados: En el período estudiado se registraron 43759 defunciones por cáncer gástrico, con mayor frecuencia en hombres 1,5:1. Las tasas de mortalidad por cáncer gástrico ajustadas por grupos etáreos aumentan después de la quinta década de la vida. Se encontraron diferencias estadísticamente significativas en todos los años estudiados y el departamento de residencia habitual del fallecido presentando Cauca (18,11- 19) y Boyacá (14,54-1742) las tasas más altas por 100.000 habitantes. Las tasas más altas se concentran en la zona de la Cordillera de los Andes, al estandarizar por grupos etáreos el Cauca tiene una tasa de 114,98 casos por 100.000 habitantes. Conclusión: El cáncer gástrico es la neoplasia que causa más muertes en Colombia por lo cual es necesario diseñar e implementar programas de detección precoz que vayan dirigidos al control de la mortalidad.

Tratamiento de Artritis reumatoide con antagonistas del factor de necrosis tumoral alfa y su asociación con el desarrollo de melanoma cutáneo: revisión sistemática de la literatura y meta-análisis.

Introducción: El tratamiento con antagonistas del factor de necrosis tumoral alfa (anti TNF) ha impactado el pronóstico y la calidad de vida de los pacientes con artritis reumatoide (AR) positivamente, sin embargo, se interroga un incremento en el riesgo de desarrollar melanoma. Objetivo: Conocer la asociación entre el uso de anti TNF y el desarrollo de melanoma maligno en pacientes con AR. Metodología: Se realizó una búsqueda sistemática en MEDLINE, EMBASE, COCHRANE LIBRARY y LILACS para ensayos clínicos, estudios observacionales, revisiones y meta-análisis en pacientes adultos con diagnóstico de AR y manejo con anti TNF (Certolizumab pegol, Adalimumab, Etanercept, Infliximab y Golimumab). Resultados: 37 estudios clínicos cumplieron los criterios de inclusión para el meta-análisis, con una población de 16567 pacientes. El análisis de heterogeneidad no fue significativo (p=1), no se encontró diferencia en el riesgo entre los grupos comparados DR -0.00 (IC 95% -0.001; -0.001). Un análisis adicional de los estudios en los que se reportó al menos 1 caso de melanoma (4222 pacientes) tampoco mostró diferencia en el riesgo DR -0.00 (IC 95% -0.004 ; -0.003). Conclusión: En la evidencia disponible a la fecha no encontramos asociación significativa entre el tratamiento con anti TNF en pacientes con diagnóstico de AR y el desarrollo de melanoma cutáneo.

Imunomarcação de COX-2 e TGF-beta nas lesòes proliferativas da próstata do cão

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação da expressão da cicloxigenase-2 de macrófagos em diferentes graus histológicos de mastocitoma canino

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Correlação da ciclooxigenase-2 com Ki-67, P53 e Caspase-3 nas neoplasias de mama de cadela

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Análise mutacional do gene supressor de tumor TP53 e imunorreatividade da p53 em linfomas caninos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Associação entre os níveis de resíduos piretróides e graus de agressividade dos carcinomas mamários espontâneos de cadelas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Resposta do linfoma cutâneo canino à lomustina: achados clínicos, imunohistoquímicos e expressão gênica

Pós-graduação em Medicina Veterinária - FMVZ

Diagnóstico molecular da alteração mutagênica nt 230 (del4) no gene MDR1 em cães

P-glycoprotein is an adenosine triphosphate (ATP)-driven drug efflux carrier responsible for transport of xenobiotics and multiple classes of drugs, many usually use in veterinary medicine. Encoded by MDR1 gene, also referred to as ABCB1, located on chromosome 14, is expressed in many tissues with secretory or excretory functions, such as liver, kidney and intestine, where it limits drug absorption from the gut and promotes drug excretion into the bile and urine of their substrates. In 2001, a 4 base pair gene deletion mutation in the canine MDR1 gene was identified as MDR1-1▲, ABCB1-1▲, MDR1 MDR1 nt 230 (del4) and associated with an non-functional Pglycoprotein. The clinical correlation is the (hyper) sensitivity of certain dogs breeds, mostly collies, to a few classes of drugs such as anticancer drugs (doxorubicin, vincristine, vinblastine), immunosuppressants (cyclosporine), antiparasitic drugs (ivermectin, moxidectin), steroids hormones (aldosterone, cortisol, dexamethasone), antimicrobial agents (tetracycline, doxycycline, levofloxacin, ketoconazole, itraconazole), analgesics (morphine, methadone), antidiarrheals (loperamide), antiepileptic agents (phenothiazine), cardiac drugs (digoxin, diltiazem, verapamil, talinolol) and others. Dogs with homozygous MDR1 nt 230 (del4) MDR1 mutations (MDR1 - / -) have a higher predisposition to intoxication with substrates of P-gp than heterozygous (MDR1 + / -) and these are more likely than dogs homozygous nonmutant (MDR1 +/ +). After the identification of nt230 (del4) mutation, several molecular techniques have been developed for identification of mutant animals as a diagnostic method. The importance of molecular diagnosis is, after the identification of mutant animals, establish treatment protocols safe, exclude this animals from reproduction (genetic selection program) and investigating the history of adverse drugs reactions... (Complete abstract click electronic access below)

Prostaglandina E2 em cães portadores de linfoma multicêntrico submetidos ao protocolo quimioterápico de Madison-Wisconsin associado ou não a um inibidor de COX-2

Pós-graduação em Medicina Veterinária - FCAV