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M9620853.TXT
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1996-02-26
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Document 0853
DOCN M9620853
TI Neutralizing antibodies in slowly progressing HIV-1 infection.
DT 9602
AU Schonning K; Nielsen C; Iversen J; Nielsen JO; Hansen JE; Department of
Infectious Diseases, Hvidovre Hospital, Denmark.
SO J Acquir Immune Defic Syndr Hum Retrovirol. 1995 Dec 1;10(4):400-7.
Unique Identifier : AIDSLINE MED/96074272
AB Ten asymptomatic individuals who had experienced only limited CD4+ cell
loss after prolonged infection with HIV-1 were studied. These
individuals had a mean CD4+ cell count of 674 x 10(6) cells/L and a mean
duration of infection of 8.5 years. Also included were 10 asymptomatic
HIV-1-infected individuals who, over a similar period of infection (7.5
years), had experienced a profound loss of CD4+ cells (mean CD4+ cell
count, 54 x 10(6) cells/L). Proviral load was determined using a
semiquantitative polymerase chain reaction and was significantly lower
in the subjects with slowly progressing infection (SPI) than in subjects
with rapidly progressing infection (RPI) (4,000 vs. 40,000 proviral
copies/10(6) peripheral blood mononuclear cells; p = 0.0089). Isolation
of virus was attempted in all individuals but succeeded only in 6 of 10
individuals with SPI versus all 10 individuals with RPI. Four of six
virus isolates obtained from individuals with SPI and 6 of 10 obtained
from individuals with RPI were of the syncytia-inducing phenotype. We
determined the neutralizing activity of serum against HIVMN, HIVIIIB,
and the contemporaneous autologous isolate when available. Serum from
individuals with SPI generally neutralized the contemporaneous isolate,
whereas serum from individuals with RPI did not [geometric mean antibody
titer (GMT), 45 vs. 3; p = 0.0047]. There was no difference in
neutralizing ability against HIVMN (GMT,2,593 vs. 2,263; p = 0.74) and
only a small difference against HIVIIIB (GMT, 115 vs. 50; p = 0.075).
Our results indicate that individuals with SPI are characterized by an
ability to neutralize their own HIV strain.(ABSTRACT TRUNCATED AT 250
WORDS)
DE Adult Base Sequence Cell Fusion CD4 Lymphocyte Count CD4-Positive
T-Lymphocytes/IMMUNOLOGY Disease Progression DNA Primers/CHEMISTRY
DNA, Viral/ANALYSIS Enzyme-Linked Immunosorbent Assay Gene Products,
pol/IMMUNOLOGY Human HIV Antibodies/*IMMUNOLOGY HIV
Infections/*IMMUNOLOGY/PHYSIOPATHOLOGY HIV-1/*IMMUNOLOGY/ISOLATION &
PURIF Male Middle Age Molecular Sequence Data Neutralization Tests
Polymerase Chain Reaction 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).