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Apoptosis as a cause of T-cell unresponsiveness in experimental Chagas' disease
Braz. j. med. biol. res ; 28(8): 913-8, Aug. 1995. ilus
Artículo en Inglés | LILACS | ID: lil-156287
RESUMO
A murine model of Chagas'disease induced by metacyclic forms of T. cruzi was used to evaluate T-cell function during infection. T-cell unresponsiveness to TcR; CD3 stimulation in vitro and lymphocyte activation in vivo occurred simultaneously. These paradoxical findings ar discussed in the light of recent evidence that mature activated T cells become susceptible to TcR-mediated apoptosis. Activation-induced death in T cells from T. cruzi-infected mice has recently been demonstrated in this model. Evidence that TcR-induced death of activated T cells could be a cause for T-cell unresponsiveness in vitro and in vivo, as well as the possible molecular mechanisms involved, are discussed.
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Índice: LILACS (Américas) Asunto principal: Técnicas In Vitro / Linfocitos T / Enfermedad de Chagas / Apoptosis Tipo de estudio: Estudio pronóstico Límite: Animales Idioma: Inglés Revista: Braz. j. med. biol. res Asunto de la revista: Biologia / Medicina Año: 1995 Tipo del documento: Artículo / Congreso y conferencia

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Índice: LILACS (Américas) Asunto principal: Técnicas In Vitro / Linfocitos T / Enfermedad de Chagas / Apoptosis Tipo de estudio: Estudio pronóstico Límite: Animales Idioma: Inglés Revista: Braz. j. med. biol. res Asunto de la revista: Biologia / Medicina Año: 1995 Tipo del documento: Artículo / Congreso y conferencia