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- W2973005321 abstract "O adenoma pleomorfico (AP) e a neoplasia benigna mais frequente das glândulas salivares maiores e menores. Apesar do crescimento lento, pode alcancar grandes dimensoes, especialmente quando localizado na parotida. Histologicamente exibe grande diversidade morfologica, com a participacao de estruturas epiteliais-mioepiteliais. A metalotioneina (MT) e uma proteina rica em cisteina presente em celulas mioepiteliais de varias neoplasias benignas e malignas e que tem sua funcao associada com a protecao ao DNA, ao estresse oxidativo e a apoptose. O objetivo do presente trabalho foi avaliar atraves da tecnica de imunoistoquimica, a expressao da MT em APs, buscando a sua associacao com caracteristicas cinico-patologicas das lesoes e, em especial, sua correlacao com Bcl-2, em uma tentativa de analisar o papel da MT no controle da apoptose nos APs. Para isto, foram utilizados 35 casos de AP de glândulas salivares menores, emblocados em parafina e realizada a imunoistoquimica para as proteinas MT e Bcl-2. A analise semi-quantitativa da expressao destas proteinas foi realizada pelo metodo Quickscore. Os dados foram analisados usando o programa de estatistica SPSS (versao 17.0, para Windows. Chicago, IL). Foi observado que a presente amostra representa caracteristicas epidemiologicas semelhantes as descritas para o AP. Nao foi encontrada nenhuma associacao entre as caracteristicas clinico-patologicas dos APs e a imunoexpressao das proteinas estudadas, porem foi observada uma correlacao entre a expressao da MT e Bcl-2. Os presentes achados sugerem que a expressao da MT no AP possa ter, entre outras funcoes, um papel no controle da apoptose." @default.
- W2973005321 created "2019-09-19" @default.
- W2973005321 creator A5034804497 @default.
- W2973005321 date "2012-08-17" @default.
- W2973005321 modified "2023-09-23" @default.
- W2973005321 title "Imunolocalização da metalotioneína no adenoma pleomórfico de glândula salivar: correlações clínico-patológicas" @default.
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