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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avaliação do marcador tumoral c-met/HGF no prognóstico do câncer colorretal através da técnica da imuno-histoquímica / Evaluation of the c-met/hgf tumoral marker in the prognosis of colorectal cancer through the immunohistochemical technique

Oliveira, Antonio Talvane Torres de [UNIFESP] 31 December 2006 (has links) (PDF)
Made available in DSpace on 2015-07-22T20:49:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-12-31 / Objetivo: Avaliar o significado prognóstico do marcador tumoral c-met/HGF, através da técnica imuno-histoquímica, em doentes portadores de adenocarcinoma colorretal submetidos a tratamento cirúrgico. Métodos: Estudo retrospectivo de 286 doentes,portadores de adenocarcinoma colorretal, atendidos e operados no Hospital do Câncer de Barretos, de 1993 a 2002. A expressão tissular do marcador tumoral foi avaliada utilizando-se o anticorpo monoclonal antiproteína c-met/HGF, com a técnica da estreptavidina-biotina-peroxidase. A análise da positividade do marcador foi feita de maneira semiquantitativa e a leitura das lâminas, realizada por três patologistas, de forma independente e sem prévio conhecimento dos dados clínicos e histopatológicos dos doentes. Resultados: Do total de 286 doentes analisados, o marcador foi positivo em 236 (78,8%) e negativo em 50 (21,2%). Houve diferença, estatisticamente significante (p=0.004), entre os estádios l e lV, na sobrevida global (p=0.009) e no coeficiente de mortalidade por câncer (p=0.022), porém não se identificou associação do marcador com a ocorrência de recidivas (p=0.89) e o intervalo livre de doença (p=0.91). Conclusão: O marcador tumoral c-met/HGF demonstrou significância estatística, em relação à sua expressão, nos estádios l e lV da doença, na sobrevida global e no coeficiente de mortalidade por câncer, porém não se associou de forma significante com as outras variáveis prognósticas estudadas. / Objective: To evaluate the prognostic meaning of the c-met/HGF tumoral marker, through the immunohistochemical technique, in patients with colorectal adenocarcinoma who have been subjected to surgical treatment. Methods: A retrospective descriptive study of 286 patients with colorectal adenocarcinoma, who have been seen and operated at Barretos Cancer Hospital, from 1993 to 2002. The tissular expression of the tumoral marker was evaluated using the cmet/ HGF anti-protein monoclonal antibody through the estreptavidin-biotinperoxidase technique. The positivity analysis of the marker was semiquantitative, and plate reading was independently carried out by three pathologists with no previous knowledge on clinical and histopathological data of patients. Results: Out of a total of 286 patients, the marker was positive in 236 (78.8%) and negative in 50 (21.2%). It was found statistically significant difference (p=0.004) between stages l and lV, at global life span (p=0.009), and at cancer mortality rate (p=0.022); however, there was no association between the marker and recurrence (p=0.89) or the marker and disease-free period (p=0.91). Conclusion: c-met/HGF has shown significance as a tumoral marker in stages l and lV of the disease, at global life span, and at cancer mortality rate; however, there was no significant association with the remaining prognostic variables that have been studied. / TEDE / BV UNIFESP: Teses e dissertações

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