Role of Trypanosoma cruzi Autoreactive T Cells in the Generation of Cardiac Pathology

Abstract:  Chagas disease, caused by Trypanosoma cruzi, affects several million people in Central and South America. About 30% of chronic patients develop cardiomyopathy probably caused by parasite persistence and/or autoimmunity. While several cross‐reactive antibodies generated during mammal T. cruzi infection have been described, very few cross‐reactive T cells have been identified. We performed adoptive transfer experiments of T cells isolated from chronically infected mice. The results showed the generation of cardiac pathology in the absence of parasites. We also transferred cross‐reactive SAPA‐specific T cells and observed unspecific alterations in heart repolarization, cardiac inflammatory infiltration, and tissue damage.

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