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Rapid CD4(+) T-cell Loss Induced by Human Immunodeficiency Virus Type 1(NC) in Uninfected and Previously Infected Chimpanzees

Overview
Journal J Virol
Date 2001 Jan 11
PMID 11152525
Citations 19
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Abstract

To investigate the pathogenicity of a virus originating in a chimpanzee with AIDS (C499), two chimpanzees were inoculated with a plasma-derived isolate termed human immunodeficiency virus type 1(NC) (HIV-1(NC)). A previously uninfected chimpanzee, C534, experienced rapid peripheral CD4(+) T-cell loss to fewer than 26 cells/microl by 14 weeks after infection. CD4(+) T-cell depletion was associated with high plasma HIV-1 loads but a low virus burden in the peripheral lymph node. The second chimpanzee, C459, infected 13 years previously with HIV-1(LAV), experienced a more protracted course of peripheral CD4(+) T-cell loss after HIV-1(NC) inoculation, resulting in fewer than 200 cells/microl by 96 weeks postinoculation. The quantities of viral RNA in the plasma and peripheral lymph node from C459 were below the lower limits of detection prior to inoculation with HIV-1(NC) but were significantly and persistently increased after superinfection, with HIV-1(NC) representing the predominant viral genotype. These results show that viruses derived from C499 are more pathogenic for chimpanzees than any other HIV-1 isolates described to date.

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