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- W1527094712 endingPage "670" @default.
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- W1527094712 abstract "Apoptosis is a main feature of AIDS pathogenesis and is thought to play a role in the progressive decrease of CD4+ T lymphocytes in infected individuals. To determine whether apoptosis occurs in infected and/or in uninfected peripheral blood T lymphocytes, we have used a recombinant human immunodeficiency virus type 1 (HIV-1) infectious clone expressing the green fluorescent protein (GFP). Using flow cytometry, we have determined the incidence of apoptosis by either terminal transferase dUTP nick end labeling or annexin-V assays in different cell subpopulations, i.e., in CD4+ or CD8+ T cells that were GFP positive or negative. After HIV-1 infection of purified peripheral blood lymphocytes, we observed that apoptosis occurred mostly in infected CD4+ peripheral blood lymphocytes. Remarkably, the presence of monocyte-derived macrophages in the culture increased dramatically the apoptosis of uninfected bystander T lymphocytes, while apoptosis in HIV-infected T lymphocytes was not changed. We therefore demonstrate that HIV-induced apoptosis results from at least two distinct mechanisms: (i) direct apoptosis in HIV-infected CD4+ T lymphocytes and (ii) indirect apoptosis in uninfected T cells mediated by antigen-presenting cells." @default.
- W1527094712 created "2016-06-24" @default.
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- W1527094712 date "1998-01-01" @default.
- W1527094712 modified "2023-10-14" @default.
- W1527094712 title "Distinct Mechanisms Trigger Apoptosis in Human Immunodeficiency Virus Type 1-Infected and in Uninfected Bystander T Lymphocytes" @default.
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- W1527094712 doi "https://doi.org/10.1128/jvi.72.1.660-670.1998" @default.
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