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DOI: 10.1590/0004-282X20150179
Persistent Sydenham’s chorea is not associated with sustained lymphocyte dysfunction
A coreia de Sydenham persistente não está associada à disfunção sustentada de linfócitosThe mechanisms involved in the symptoms of Sydenham’s chorea (SC) remain obscure. Taking into account the autoreactive antibody-mediated hypothesis of SC pathogenesis, the persistence of chorea may be associated with increased levels of B1 lymphocytes and other lymphocyte subsets. We evaluated lymphocyte subsets, including B1 and T cells, in patients with remitted (RSC) and persistent (PSC) SC by flow cytometry. Our results showed neither difference in the frequency of T and B lymphocytes subpopulations nor in their activation and functional states. These findings undermine the view of PSC as a sustained cytotoxic cellular-mediated condition. Alternative mechanisms may explain the pathogenesis of PSC.
Os mecanismos subjacentes aos sintomas da coreia de Sydenham (CS) permanecem desconhecidos. Considerando-se a hipótese de que a patogênese da CS é mediada por anticorpos autorreativos, a persistência da coreia está provavelmente associada a níveis aumentados de linfócitos B1 e outros subtipos de linfócitos. No presente trabalho, foram avaliados subtipos de linfócitos B e T em pacientes com CS em remissão (CSR) e persistente (CSP), por citometria de fluxo. Nossos resultados demonstraram que não há diferença na frequência das subpopulações de linfócitos T e B circulantes e no perfil de ativação e estado funcional dessas células. Esses resultados enfraquecem a hipótese de que a CSP seja uma condição imune sustentada mediada por células citotóxicas. São necessários estudos que investiguem mecanismos alternativos que expliquem a patogênese da CSP.
Support:
Support:Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação de Amparo à Pesquisa do Estado de Minas Gerais (Fapemig).
Publication History
Received: 08 June 2015
Accepted: 01 July 2015
Article published online:
06 September 2023
© 2015. Academia Brasileira de Neurologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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