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- W2113159898 abstract "Apoptosis of peripheral blood T cells plays an important role in the pathogenesis of human immunodeficiency virus (HIV) infection. In this study, we found that HIV type 1 (HIV-1) primes CD4(+) T cells from healthy donors for apoptosis, which occurs after CD95 ligation or CD3-T-cell receptor (TCR) stimulation. CD95-mediated death did not depend on CD4 T-cell infection, since it occurred in the presence of the reverse transcriptase inhibitor didanosine (ddI). In contrast, apoptosis induced by productive infection (CD3-TCR stimulation) is prevented by both CD95 decoy receptor and ddI. Our data suggest that HIV-1 triggers at least two distinct death pathways: a CD95-dependent pathway that does not require viral replication and a viral replication-mediated cell death independent of the CD95 pathway. Further experiments indicated that saquinavir, a protease inhibitor, at a 0.2 microM concentration, decreased HIV-mediated CD95 expression and thus cell death, which is independent of its role in inhibiting viral replication. However, treatment of peripheral blood mononuclear cells from healthy donors with a higher concentration (10 microM) of an HIV protease inhibitor, saquinavir or indinavir, induced both a loss in mitochondrial membrane potential (DeltaPsim) and cell death. Thus, protease inhibitors have the potential for both beneficial and detrimental effects on CD4(+) T cells independent of their antiretroviral effects." @default.
- W2113159898 created "2016-06-24" @default.
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- W2113159898 date "2002-06-15" @default.
- W2113159898 modified "2023-10-16" @default.
- W2113159898 title "Effects of Antiretroviral Drugs on Human Immunodeficiency Virus Type 1-Induced CD4<sup>+</sup>T-Cell Death" @default.
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- W2113159898 doi "https://doi.org/10.1128/jvi.76.12.5966-5973.2002" @default.
- W2113159898 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/136220" @default.
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