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M9620487.TXT
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1996-02-26
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Document 0487
DOCN M9620487
TI Interaction with human immunodeficiency virus type 1 modulates innate
effector functions of human monocytes.
DT 9602
AU Zerlauth G; Maier E; Chehadeh H; Zimmermann K; Eibl MM; Mannhalter JW;
Immuno AG, University of Vienna, Austria.
SO J Infect Dis. 1995 Dec;172(6):1598-601. Unique Identifier : AIDSLINE
MED/96083510
AB The effect of human immunodeficiency virus (HIV) type 1 on human
mononuclear phagocyte effector functions in response to infection with
bacteria of the Mycobacterium avium-intracellular complex (MAC) was
investigated. The results showed that interaction of HIV-1 or its
constituents with CD4 expressed in the monocyte membrane led to
substantial impairment of monocyte capacity to restrict the
intracellular growth of MAC. This was accompanied by substantially
decreased production of tumor necrosis factor-alpha by HIV-1-exposed and
MAC-infected monocytes. However, productive HIV-1 infection of monocytes
was not required to induce the observed effects. These studies suggest
that HIV-1 may interfere with innate mononuclear phagocyte function.
This may be of physiologic importance in the late stages of AIDS, when
an impaired T cell immunity can no longer provide proper
immune-activating signals, and may help to explain the undue
susceptibility to MAC infections in these patients.
DE Human HIV-1/*PHYSIOLOGY Monocytes/*IMMUNOLOGY/VIROLOGY Mycobacterium
avium Complex/GROWTH & DEVELOPMENT Mycobacterium avium-intracellulare
Infection/ETIOLOGY Tumor Necrosis Factor/SECRETION JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).