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Estudo da proliferação celular e da expressão da proteína bcl-2 em crianças com histiocitoses das células de Langerhans / The study of the cellular proliferation and the bcl-2 protein expression in children with Langerhans cell histiocytosis
São Paulo; s.n; 2005. [80] p. ilus, tab.
Thesis in Portuguese | LILACS | ID: lil-406299
RESUMO
Foram realizados estudos imunohistoquímicos em 36 materiais de biópsias de crianças com histiocitoses das células de Langerhans. O anticorpo monoclonal MIB-1 foi utilizado para determinação dos índices proliferativos das lesões e o anticorpo monoclonal bcl-2 para detecção da proteína bcl-2, inibidora da apoptose. Os pacientes foram divididos em dois grupos de doenças localizada e disseminada. Em cinco casos das formas localizadas e em um caso das formas localizadas houve positividade para o anticorpo bcl-2, não sendo observado correlação com as evoluções clínicas dos pacientes. Embora os índices percentuais de células proliferativas determinadas pelo MIB-1 tenham sido maiores nas formas disseminadas, não houve diferença estatisticamente significante entre os dois grupos de doenças. Também não foi observado correlação entre altos índices proliferativos e más evoluções clínicas / Immunohistochemical studies were performed in 36 biopsies materials of children with Langerhans cell histiocytosis. The MIB-1 monoclonal antibody was used to determine the lesions proliferative index and the bcl-2 monoclonal antibody, to detect the bcl-2 protein, inhibitive of apoptosis. The patients were divided in two groups of diseases restrictive and extensive. In five cases of restricted disease and in one case of extensive disease, there was positiveness for the bcl-2 antibody, but correlation to clinical evolution of the patients was not observed. Although the proliferative cell percentage index determined by MIB-1 antibody was higher in the extensive disease group, there was not a statistically significant difference between the two diseases groups. It was also not observed correlation between high proliferative index and bad...
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Index: LILACS (Americas) Main subject: Histiocytosis, Langerhans-Cell / Proliferating Cell Nuclear Antigen Type of study: Observational study / Prognostic study Limits: Child / Child, preschool / Female / Humans / Infant / Male Language: Portuguese Year: 2005 Type: Thesis

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Index: LILACS (Americas) Main subject: Histiocytosis, Langerhans-Cell / Proliferating Cell Nuclear Antigen Type of study: Observational study / Prognostic study Limits: Child / Child, preschool / Female / Humans / Infant / Male Language: Portuguese Year: 2005 Type: Thesis