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1996-02-26
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Document 0768
DOCN M9620768
TI Failure of T-cell homeostasis preceding AIDS in HIV-1 infection. The
Multicenter AIDS Cohort Study [see comments]
DT 9602
AU Margolick JB; Munoz A; Donnenberg AD; Park LP; Galai N; Giorgi JV;
O'Gorman MR; Ferbas J; Department of Molecular Biology and Immunology,
Johns Hopkins; University School of Hygiene and Public Health,
Baltimore,; Maryland 21205-2179, USA.
SO Nat Med. 1995 Jul;1(7):674-80. Unique Identifier : AIDSLINE MED/96071530
CM Comment in: Nat Med 1995 Jul;1(7):621-2
AB We and others have postulated that a constant number of T lymphocytes is
normally maintained without regard to CD4+ or CD8+ phenotype ('blind'
T-cell homeostasis). Here we confirm essentially constant T-cell levels
(despite marked decline in CD4+ T cells and increase in CD8+ T cells) in
homosexual men with incident human immunodeficiency virus, type 1
(HIV-1), infection who remained free of acquired immunodeficiency
syndrome (AIDS) for up to eight years after seroconversion. In contrast,
seroconverters who developed AIDS exhibited rapidly declining T cells
(both CD4+ and CD8+) for approximately two years before AIDS,
independent of the time between seroconversion and AIDS, suggesting that
homeostasis failure is an important landmark in HIV disease progression.
Given the high rate of T-cell turnover in HIV-1 infection, blind T-cell
homeostasis may contribute to HIV pathogenesis through a CD8+ T
lymphocytosis that interferes with regeneration of lost CD4+ T cells.
DE Acquired Immunodeficiency Syndrome/IMMUNOLOGY/*PHYSIOPATHOLOGY Cohort
Studies CD4-CD8 Ratio CD4-Positive T-Lymphocytes/*PATHOLOGY
CD8-Positive T-Lymphocytes/*PATHOLOGY Disease Progression
*Hematopoiesis Homeostasis Homosexuality Human HIV
Infections/IMMUNOLOGY/*PHYSIOPATHOLOGY HIV Seropositivity/IMMUNOLOGY
*HIV-1 *Lymphocyte Count Lymphocytosis/ETIOLOGY Male Support,
Non-U.S. Gov't Support, U.S. Gov't, P.H.S. Time Factors JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).