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M9620677.TXT
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1996-02-26
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Document 0677
DOCN M9620677
TI Expression of the Fas antigen in patients infected with human
immunodeficiency virus.
DT 9602
AU McCloskey TW; Oyaizu N; Kaplan M; Pahwa S; Department of Pediatrics,
North Shore University Hospital-Cornell; University Medical College,
Manhasset, NY 11030, USA.
SO Cytometry. 1995 Jun 15;22(2):111-4. Unique Identifier : AIDSLINE
MED/96090293
AB Lymphocytes from patients with HIV infection have been shown to undergo
accelerated apoptosis. Fas antigen is a cell surface protein known to
initiate an apoptotic signal. Therefore, we undertook a study to examine
the expression of the Fas antigen during HIV infection. Using three
color flow cytometry, expression of the Fas antigen on lymphocytes of 23
HIV infected individuals (CDC category 2, CD4 200-499 cells/microL, n =
10; CDC category 3, CD4 < 200 cells/microL, n = 13) and 10 healthy
controls was examined. Both CD3+CD4+ and CD3+CD8+ subsets were examined
for their expression of this marker. In lymphocytes of healthy controls,
47% of the CD3+CD4+ and 45% of the CD3+CD8+ cells were Fas antigen
positive. This percentage was significantly increased in CD4 cells from
HIV infected patients belonging to CDC category 3, but was unchanged
from normal values in CDC category 2 subjects. The increase in the
percentage of CD4+ T cells expressing Fas antigen in patients correlated
significantly with the decrease in circulating CD4 T cell count (P <
0.009). In addition, by examining mean fluorescence intensity, we found
that the amount of Fas expression per cell was increased threefold in
CD3+CD4+ cells and increased twofold in CD3+CD8+ cells in category 3
patients. These results demonstrate that an increase in Fas antigen
expression occurs during HIV infection.
DE Adult Aged Antigens, CD95/*BIOSYNTHESIS Case-Control Studies CD4
Lymphocyte Count CD4-Positive T-Lymphocytes/*IMMUNOLOGY CD8-Positive
T-Lymphocytes/*IMMUNOLOGY Female Human HIV Antigens/*BIOSYNTHESIS
HIV Infections/*IMMUNOLOGY Male Middle Age Support, U.S. Gov't,
P.H.S. JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).