Modulation of Intrathymic Sphingosine-1-Phosphate Levels Promotes Escape of Immature Thymocytes to the Periphery with a Potential Proinflammatory Role in Chagas Disease.

Abstract:

:The sphingosine-1-phosphate (S1P) system regulates both thymic and lymph nodes T cell egress which is essential for producing and maintaining the recycling T cell repertoire. Infection with the protozoan parasite Trypanosoma cruzi induces a hormonal systemic deregulation that has impact in the thymic S1P homeostasis that ultimately promotes the premature exit of immature CD4(-)CD8(-) T cells expressing TCR and proinflamatory cytokines to peripheral lymphoid organs, where they may interfere with adaptive immune responses. In what follows, we review recent findings revealing escape of these immature T cells exhibiting an activation profile to peripheral compartments of the immune system in both experimental murine and human models of Chagas disease.

journal_name

Biomed Res Int

authors

Flávia Nardy A,Santos L,Freire-de-Lima CG,Morrot A

doi

10.1155/2015/709846

subject

Has Abstract

pub_date

2015-01-01 00:00:00

pages

709846

eissn

2314-6133

issn

2314-6141

journal_volume

2015

pub_type

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