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1994-10-25
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Document 3035
DOCN M94A3035
TI Prognostic value of CD4+ count and CD8+ T-cell activation in HIV
seropositive patients.
DT 9412
AU Declercq E; Lavreys L; Kestens L; Vanham G; Colebunders R; Gigase P;
Institute of Hygiene and Epidemiology, Brussels, Belgium.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):169 (abstract no. PB0101). Unique
Identifier : AIDSLINE ICA10/94369540
AB OBJECTIVE: To study the value of CD4+ T-lymphocytes and of the
activation markers human leukocyte antigen (HLA)-DR and CD38 antigen on
CD8+ cells in predicting the risk to develop clinical AIDS. METHODS: The
selected population comes from a set of 753 HIV seropositive patients
for whom CD4+ count and expression of CD38 and HLA-DR antigens on CD8+
cells had been measured at the Institute of Tropical Medicine, Antwerp,
between 1991 and 1993. A link based on a unique identification code was
made between this set of data and the national HIV and AIDS registry in
order to recognize which of these patients developed clinical AIDS in
the following months. The final study population consists of 278 Belgian
HIV seropositive patients who had not been diagnosed as AIDS patients at
the time of the measurements. Techniques of survival analysis were used
to study the probability of developing AIDS according to CD4+ count and
expression of HLA-DR and CD38 antigens. RESULTS: The probability of
developing AIDS was significantly lower (p < 0.0001) for the patients
with CD4+ count equal to or higher than 400/mm3 than for those with less
than 400 CD4+/mm3 (cumulative risk of developing AIDS after 36 months:
24% vs. 37%). No difference was found in the risk of developing AIDS
between the patients with high or low expression of HLA-DR antigen. For
the patients with less than 400 CD4+/mm3, the risk of developing AIDS
was significantly higher (p < 0.001) when there was a high expression of
CD38 antigen (cumulative risk of developing AIDS after 36 months: 55%
vs. 23%). The same trend, although not statistically significant, was
observed for the patients with more than 400 CD4+/mm3 (cumulative risk
of developing AIDS after 36 months: 35% vs. 18%). CONCLUSION:
Measurement of CD38 expression on CD8+ cells together with CD4+ count
could help estimating the individual prognosis than CD4+ count alone in
HIV seropositive patients.
DE Acquired Immunodeficiency Syndrome/CLASSIFICATION/DIAGNOSIS/
*IMMUNOLOGY Antigens, CD8/*IMMUNOLOGY Antigens, Differentiation/BLOOD
Follow-Up Studies Human HIV
Seropositivity/CLASSIFICATION/DIAGNOSIS/*IMMUNOLOGY HLA-DR
Antigens/BLOOD *Leukocyte Count Lymphocyte Transformation/*IMMUNOLOGY
Risk Factors T-Lymphocytes, Suppressor-Effector/*IMMUNOLOGY T4
Lymphocytes/*IMMUNOLOGY MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).