1. Evaluation of lymph node virus burden in human immunodeficiency virus-infected patients receiving efavirenz-based protease inhibitor--sparing highly active antiretroviral therapy.
- Author
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Dybul M, Chun TW, Ward DJ, Hertogs K, Larder B, Fox CH, Orenstein JM, Baird BF, Li Y, Green LG, Engel D, Liu S, Mican JM, and Fauci AS
- Subjects
- Alkynes, Benzoxazines, Coculture Techniques, Cross-Sectional Studies, Cyclopropanes, Genotype, HIV genetics, HIV physiology, HIV Infections drug therapy, HIV Infections pathology, Humans, In Situ Hybridization, Lymph Nodes pathology, Protease Inhibitors therapeutic use, RNA, Viral analysis, Viral Load, Virus Replication, Anti-HIV Agents therapeutic use, HIV Infections virology, Lymph Nodes virology, Oxazines therapeutic use, Reverse Transcriptase Inhibitors therapeutic use
- Abstract
Although efavirenz-containing regimens effectively suppress plasma levels of human immunodeficiency virus (HIV) RNA, it is now clear that undetectable plasma viremia may not reflect a lack of viral replication. Because lymphoid tissue is an active site of HIV replication, the lymph node virus burden was analyzed in persons who received highly active antiretroviral therapy (HAART) containing either efavirenz or a protease inhibitor (PI). Testing with in situ hybridization revealed no detectable follicular dendritic cell-associated HIV RNA in either group, and only 2 of 8 persons in the efavirenz group and 1 of 4 in the PI group had detectable RNA in lymph node mononuclear cells (LNMC) when tested by use of nucleic acid sequencebased amplification. Low levels of replication-competent HIV were identified in both groups by use of quantitative coculture assays. There was no evidence of development of resistance to either regimen in virus isolated from LNMC. These data support the use of efavirenz as an alternative to a PI in initial HAART regimens.
- Published
- 2000
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