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M94A3257.TXT
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1994-10-25
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Document 3257
DOCN M94A3257
TI Relationship between infectious HIV-1 viral load, CD4 count and clinical
status.
DT 9412
AU Margolick J; Farzadegan H; Hoover D; Rubb S; Scott E; Saah A; Johns
Hopkins University, Baltimore, MD 21205.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):117 (abstract no. PA0089). Unique
Identifier : AIDSLINE ICA10/94369318
AB OBJECTIVE: To define the interaction between infectious viral load and
the host immune system. METHOD: 246 HIV+ homosexual men in the Johns
Hopkins Center of the Multicenter AIDS Cohort Study (MACS) were studied.
The 1987 clinical AIDS definition was used. Infectious units of HIV-1
per one million PBMC (IUPM) was determined by serial 5-fold dilutions of
10(6) PBMC, cocultured with PHA-P stimulated normal PBMC. Two color flow
cytometry was used for analysis of lymphocyte phenotypes. RESULTS: HIV-1
infectious viral load in PBMC was distributed log normally. IUPM was
detectable in 194 of 246 subjects (79%) at baseline. The overall
geometric mean was 31 IUPM. Infectious viral load was inversely related
to the level of circulating CD4+ lymphocytes and many other lymphocytes
subsets. No correlation was found with NK cells, B-cells or gamma-delta
T cells. Multivariate stepwise regression analysis showed no significant
correlation between CD38+, CD29 bright and HLA-DR+ among CD4+
lymphocytes, but CD8+ lymphocytes expressing CD38 were independently
associated with IUPM. CONCLUSION: Over a broad range of CD4 lymphocyte
counts an inverse relationship between IUPM and CD4+ exists. Observed
lower IUPM in AIDS cases after controlling for CD4 count may suggest
that CD4+ lymphocytes in AIDS patients are less permissive for HIV-1
replication.
DE Antigens, CD8/METABOLISM Antigens, Differentiation/METABOLISM Human
HIV Infections/*BLOOD/IMMUNOLOGY/*MICROBIOLOGY
*HIV-1/IMMUNOLOGY/ISOLATION & PURIF/PHYSIOLOGY Leukocyte Count
Lymphocyte Subsets/IMMUNOLOGY Male *T4 Lymphocytes/IMMUNOLOGY Virus
Replication/IMMUNOLOGY MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).