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M94A3044.TXT
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1994-10-25
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Document 3044
DOCN M94A3044
TI Two-color flow cytometric determination of absolute counts of lymphocyte
subpopulations in HIV-infected patients.
DT 9412
AU Goto T; Takano K; Kimura S; Shionogi Biomed. Lab., Univ. of Tokyo,
Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):166 (abstract no. PB0090). Unique
Identifier : AIDSLINE ICA10/94369531
AB OBJECTIVE: To find out good surrogate markers for analysis of
pathophysiology and prediction of prognosis of HIV disease. SUBJECTS AND
METHODS: Absolute counts of lymphocyte subpopulations (CD4 x CD45RA, CD4
x CD29, CD8 x CD11b, CD16 x CD56) were analyzed by two-color
flowcytometry using Cytron-Absolute (Ortho) in 74 patients with HIV
infection (CDC category A, B, C). In 8 patients, time courses of
absolute counts of subpopulations were evaluated. Half of the patients
were hemophiliacs. RESULTS: 1) CD4 counts measured by Cytron-Absolute
seemed to be more reliable than those obtained through conventional
method by calculation as WBC x lymphocyte (%) x CD4 (%). 2) Absolute
counts of all of CD4+ subpopulations (CD4+CD45RA+, CD4+CD45RA-,
CD4+CD29+, CD4+CD29-) declined almost parallel during the course of the
desease. 3) Absolute counts of CD8+CD11b- (Tc) declined more slowly than
CD4+ counts did. Opportunistic infections (OIs) frequently observed when
CD8+CD11b- counts declined to a level below 200 cells/microliters. Thus,
CD8+CD11b- counts may be a better surrogate marker for probability of
OIs than CD4+ counts. 4) Absolute counts of CD16+CD56- NK cells stayed
relatively constant when compared with CD16+CD56+ NK cells which
declined steadily with time. CONCLUSIONS: Preliminary study on absolute
counts of lymphocyte subpopulations was carried out. Some of the
subpopulations seemed to be useful for the analyses of pathophysiology
and prognosis of HIV disease.
DE AIDS-Related Opportunistic Infections/CLASSIFICATION/DIAGNOSIS/
IMMUNOLOGY Biological Markers Flow Cytometry/*METHODS
Hemophilia/IMMUNOLOGY Human HIV
Infections/CLASSIFICATION/DIAGNOSIS/*IMMUNOLOGY Killer Cells,
Natural/IMMUNOLOGY Leukocyte Count Prognosis T-Lymphocyte
Subsets/*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).