Neoplasia mamária em cadelas: caracterização histopatológica e expressão de proteínas de estresse (HSP 72)

• Autor(a) principal: Carvalho, Tatiana Borges de
• Data de Publicação: 2006
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/5119
• topic: Neoplasia mamária; Proteína de estresse; Cão; Mammary neoplasms; Stress proteins; Dogs; CNPQ::CIENCIAS AGRARIAS::MEDICINA VETERINARIA::CLINICA E CIRURGIA ANIMAL

Mammary tumor is the most frequent neoplasms in female dogs and the similarity of those tumors with the mammary tumors in the woman determines an interest in the study of the compared pathology. The expression of Heat Shock Proteins (HSP) have been observed in many neoplasms, including breast cancer. The aim of this work was to classify histopatologically and to investigate the expression of HSP 72 in normal and neoplastic canine mammary glands of female dogs assisted in the service of the Veterinary Hospital of the Federal University of Viçosa. 34 samples of mammary tissue were collected, including 23 neoplastics and 11 normal tissue, for histopatological analysis and investigation of expression of HSP 72 using Western blotting. Furthermore, the variables age to the diagnosis, breed, attacked mammary glands and histopatological classification of the tissue were investigated. Statistical analysis was carried out using Chi-square test (&#967;²). The result were considered statistically significant in the P < 0,05. The major frequency of the neoplasm diagnostic was at 8 to 13 years old, at the inguinal and caudal abdominal mammary glands and no statistical difference was observed between malignants and benign tumors nor at histopatological classifications. The expression of HSP 72 was determined in normal and neoplastic mammary gland tissue, this last one presenting an accentuated expression of this protein. The neoplastic tissue presented a larger proportion of expression of the protein HSP 72 when compared to the normal tissue, being observed equivalence among benign and malignants tumors as for the expression of that protein.