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  • Title: Effect of HIV infection and antiretroviral therapy on hepatitis B virus (HBV)-specific T cell responses in patients who have resolved HBV infection.
    Author: Lascar RM, Lopes AR, Gilson RJ, Dunn C, Johnstone R, Copas A, Reignat S, Webster G, Bertoletti A, Maini MK.
    Journal: J Infect Dis; 2005 Apr 01; 191(7):1169-79. PubMed ID: 15747254.
    Abstract:
    Coinfection with hepatitis B virus (HBV) is a common occurrence in human immunodeficiency virus (HIV)-positive patients and an increasing cause of morbidity and mortality. The CD8(+) T cell response is critical for long-term control of HBV in patients resolving acute infection. Here, we examine the effect of HIV on HBV-specific CD8(+) T cell responses in patients who have resolved HBV infection. A cross-sectional study showed a reduction in HBV-specific CD8(+) T cell responses in HIV-positive, HBV-immune patients, compared with those in HIV-negative, HBV-immune patients. A longitudinal study of a subgroup of patients examined whether this attrition could be reversed by effective antiretroviral therapy. The introduction of highly active antiretroviral therapy (HAART) resulted in reconstitution of some HBV-specific CD4(+) and CD8(+) T cell responses, in association with restoration of CD4(+) T cell counts. These data provide a mechanism to account for the observed impairment of control of HBV infection in the setting of HIV infection and support the ability of HAART to reconstitute functionally active T cell responses.
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