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São Paulo; s.n; 2005. [192] p. ilus, tab, graf.
Thesis in Portuguese | LILACS | ID: lil-424924

ABSTRACT

Este trabalho descreve um papel importante do FcRγII na apoptose de linfócitos B em sepse. Nossos resultados demonstram, ainda, que animais sépticos deficientes em cadeia gamma apresentam menor mortalidade, menores valores de TNFα e de células inflamatórias, assim como um aumento na fagocitose de E. coli. Culturas dos camundongos γ-KO revelaram flora polimicrobiana, ao contrário da forte predominância de E. coli e do maior número total de bactérias, encontrado nos camundongos selvagens. A cadeia gamma é um alvo potencial no tratamento de sepse / This work describes an important role of FcRII in B lymphocytes apoptosis, during serious bacterial infections. Our results showed, moreover, that -chain deficient septic mice have increased survival, diminished TNF levels and cells recruitment, as well as a surprising increase in E. coli phagocytosis. Cultures from -KO mice revealed a polymicrobial flora, in opposite to the strong predominance of E. coli and the increased total bacteria count found for wild-type mice. Gamma-chain is as a potential target for sepsis treatment...


Subject(s)
Mice , Animals , Bacteremia/immunology , Immunoglobulins , Receptors, Fc , Inflammation/immunology , Sepsis/immunology
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