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M9610591.TXT
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1996-01-30
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Document 0591
DOCN M9610591
TI Potential applications of proviral load measurement in clinical
retrovirology.
DT 9601
AU Conway B; Montpetit M; Raboud J; Salas T; Dufour D; Montaner JS;
O'Shaughnessy MV; Department of Medicine, St. Paul's Hospital,
Vancouver, British; Columbia, Canada.
SO J Acquir Immune Defic Syndr Hum Retrovirol. 1995;10 Suppl 2:S45-50.
Unique Identifier : AIDSLINE MED/96033811
AB We have previously noted an association between proviral load and the
severity of immune disease in individuals with a wide range of CD4 cell
counts. Using the quantitative DNA polymerase chain reaction technology
developed in our laboratory, we sought to extend these observations,
with a view to establishing guidelines for the use of proviral load in a
clinical context. We studied 199 patients with a range of CD4 cell
counts attending an urban tertiary care center. Proviral load/10(6)
peripheral blood mononuclear cells (PBMCs) was measured using a
microtiter plate assay designed specifically for this purpose. Human
immunodeficiency virus proviral DNA was detected in 193 of 199 clinical
samples. Levels of proviral load were tabulated for patients and
evaluated in seven categories defined by CD4 cell counts. Although a
wide range of proviral loads was observed in each category of patients,
there was a trend toward increasing proviral load with decreasing CD4
cell count. Statistically significant relationships were observed
between proviral load and the CD4 cell count and the CD4 cell percentage
(Spearman's correlation coefficient -0.19, p = 0.01 for both absolute
CD4 and CD4 percentage). These relationships were quite weak and could
not be taken to explain disease progression in isolation. If we defined
a cutoff between low and high proviral loads at 100 copies/10(6) PBMCs,
we noted that 52% (24 of 46) of patients with CD4 cell counts >
400/microliters had lower loads, as compared with 16% (24 of 143) of
those with more advanced disease (p < 0.01). There is a weak, but
statistically significant association between proviral load and CD4 cell
depletion.(ABSTRACT TRUNCATED AT 250 WORDS)
DE CD4 Lymphocyte Count Disease Progression DNA, Viral/*BLOOD Human
HIV/*GENETICS HIV Infections/BLOOD/IMMUNOLOGY/*VIROLOGY Leukocytes,
Mononuclear/*VIROLOGY Polymerase Chain Reaction Proviruses/*GENETICS
Support, Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).