The independent effect of drug resistance on T cell activation in HIV infection

AIDS
Peter HuntJeffrey Martin

Abstract

Antiretroviral-treated individuals with drug-resistant HIV experience slower CD4 cell count declines than untreated individuals, independent of degree of viremia. As immune activation independently predicts disease progression, we hypothesized that patients with drug-resistant viremia would have less immune activation than patients with wild-type viremia, independent of plasma HIV RNA levels and that these differences would not be explained by a direct drug effect of protease inhibitors. Percentages of activated (CD38/HLA-DR) T cells were compared between untreated participants with wild-type viremia and antiretroviral-treated participants with drug-resistant viremia, after adjusting for plasma HIV RNA levels among other factors associated with T cell activation. Changes in T cell activation were also assessed in subjects discontinuing protease inhibitors while continuing other antiretroviral medications. Twenty-one untreated participants with wild-type viremia and 70 antiretroviral-treated participants with drug-resistant viremia were evaluated. Relative to untreated participants, those with drug-resistant viremia had 29% fewer activated CD4 (P = 0.051) and CD8 (P = 0.012) T cells after adjustment for plasma HIV RNA levels amo...Continue Reading

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Citations

Mar 7, 2007·Current HIV/AIDS Reports·Peter W Hunt
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