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  • Title: Low CD4+ T cell nadir is an independent predictor of lower HIV-specific immune responses in chronically HIV-1-infected subjects receiving highly active antiretroviral therapy.
    Author: Siddique MA, Hartman KE, Dragileva E, Dondero M, Gebretsadik T, Shintani A, Peiperl L, Valentine F, Kalams SA.
    Journal: J Infect Dis; 2006 Sep 01; 194(5):661-5. PubMed ID: 16897665.
    Abstract:
    The influence of CD4(+) T cell nadirs on human immunodeficiency virus (HIV)-specific immune responses in subjects with apparently normal CD4(+) T cell counts is not known. We evaluated the frequency of HIV-1-specific immune responses in a cohort of patients with complete viral suppression (HIV-1 RNA load, <50 copies/mL) who were receiving highly active antiretroviral therapy and had a wide range of CD4(+) T cell nadirs. We found positive associations between CD4(+) T cell nadirs and the magnitude of HIV-specific CD8(+) T cell responses (P=.02) and of T cell helper responses (P=.04). These data show the CD4(+) T cell nadir to be an independent predictor of HIV-specific CD4(+) and CD8(+) T cell responses in HIV-1-infected subjects with optimal suppression of viremia.
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