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M9490378.TXT
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1994-09-19
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Document 0378
DOCN M9490378
TI Direct involvement of extracellular HIV-1 virions in the apoptosis of
CD8+ lymphocytes: a two-step model.
DT 9411
AU Mercure L; Wainberg MA; McGill University AIDS Centre, Lady Davis
Institute--Jewish; General Hospital, Montreal, Quebec, Canada.
SO Med Hypotheses. 1994 Mar;42(3):159-68. Unique Identifier : AIDSLINE
MED/94335770
AB Lymphocytes of the CD8 phenotype play an important role in controlling
viral burden in HIV-1 infection. Cytotoxic CD8+ T lymphocytes (CTL) can
kill HIV-infected cells and in addition, are able to secrete a soluble
factor that inhibits HIV replication. In most cases, HIV-infected
individuals experience an unexplained CD8+ lymphopenia during the
advanced stage of the disease that particularly affect HIV-1-specific
CTL. It has been reported that CD8+ lymphocytes in HIV-infected
individuals undergo programmed cell death or apoptosis. We now present a
two-step model to explain CD8+ apoptosis, based on anchorage of
HIV-1-associated MHC class 1 antigen into the envelope of extracellular
viral particles.
DE Antigens, CD8 Apoptosis Histocompatibility Antigens Class I Human
HIV Infections/BLOOD/ETIOLOGY HIV-1/IMMUNOLOGY/*PHYSIOLOGY
Lymphopenia/ETIOLOGY *Models, Biological Receptors, Antigen, T-Cell
T-Lymphocytes, Cytotoxic/IMMUNOLOGY/*PATHOLOGY JOURNAL ARTICLE REVIEW
REVIEW, TUTORIAL
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).