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Intracellular Casp8p41 content is inversely associated with CD4 T cell count.


ABSTRACT: Casp8p41 is a protein fragment generated by cleavage of procaspase 8 by human immunodeficiency virus (HIV) protease. We measured Casp8p41 content in memory CD4 T cells and analyzed the association of Casp8p41 content with CD4 T cell count, cross-sectionally and longitudinally. Casp8p41 content was inversely correlated with CD4 T cell count, and change in Casp8p41 content was associated with absolute CD4 T cell count with change over time. Casp8p41 change was a better predictor of CD4 T cell count change than activated CD8 T cell percentage or viral load and was comparable to bacterial 16s DNA levels. This suggests that Casp8p41 is a relevant mediator of CD4 T cell death during HIV infection.

SUBMITTER: Cummins NW 

PROVIDER: S-EPMC2906377 | BioStudies | 2010-01-01

REPOSITORIES: biostudies

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