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M9640674.TXT
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1996-03-04
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Document 0674
DOCN M9640674
TI Serum anti-p24 antibody concentration has a predictive value on the
decrease of CD4 lymphocyte count higher than acid-dissociated p24
antigen.
DT 9604
AU Morand-Joubert L; Bludau H; Lerable J; Petit JC; Lefrere JJ; Service de
Bacterio-Virologie, Hopital Saint-Antoine, Paris,; France.
SO J Med Virol. 1995 Sep;47(1):87-91. Unique Identifier : AIDSLINE
MED/96048327
AB We studied the prognostic value on the decrease of CD4 lymphocyte count
of anti-p24 antibody (ab) titer and compared this value with that of
polyclonal and monoclonal p24 (ag) titer before and after immune complex
dissociation (ICD); 53 human immunodeficiency virus (HIV)-infected
patients having CD4+ counts above 400/mm3 when first examined were
followed up over a 3-year period including at least four visits; HIV
disease progressors (n = 18) were defined as having CD4+ counts below
200/mm3 and non-progressors (n = 35) as having CD4+ counts still above
400/mm3 at the end of follow-up. Sera were collected at each visit and
assayed for p24 ag with and without ICD and for anti-p24 ab titer. The
mean anti-p24 ab titer of progressors and of non-progressors at entry
was significantly different. A threshold of anti-p24 ab titer indicating
a HIV progression was determined at 1/300. The proportion of individuals
with an anti-p24 ab titer lower than 1/300 at least once during the
study period was 34% in non-progressors and 94% in progressors. The
difference between progressors and non-progressors at entry was
significant with monoclonal p24 ag without ICD and more significant with
monoclonal p24 ag after ICD. The marker having the highest predictive
value was the anti-p24 ab titer, then monoclonal p24 ag with ICD, then
polyclonal p24 ag with ICD. Anti-p24 ab is an earlier and stronger
marker of the decrease of CD4 lymphocyte count than p24 ag even after
ICD.
DE Acids Adult Antigen-Antibody Complex/IMMUNOLOGY *CD4 Lymphocyte Count
Disease Progression Follow-Up Studies Human HIV Antibodies/*BLOOD
HIV Antigens/*BLOOD HIV Core Protein p24/*IMMUNOLOGY HIV
Infections/*IMMUNOLOGY Longitudinal Studies Male Predictive Value of
Tests JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).