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1996-03-04
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Document 0734
DOCN M9640734
TI Characteristics and clinical significance of a stabilization assay to
detect specific antibodies to reverse transcriptase of human
immunodeficiency virus.
DT 9604
AU Morita M; Suzuki T; Nakajima K; Shiozawa C; Gill MJ; Hoshino H; Division
of Biomedical Research, Kitasato Institute Hospital,; Tokyo, Japan.
SO Clin Diagn Lab Immunol. 1995 Sep;2(5):583-9. Unique Identifier :
AIDSLINE MED/96089396
AB Antibodies against reverse transcriptase (RT) of human immunodeficiency
virus type 1 (HIV-1) have been detected in seropositive subjects by
immunoprecipitation, Western immunoblotting, and neutralization assay.
Recently, we noticed that the antibodies against RT stabilized RT upon
heat inactivation, and we have developed a stabilization assay of RT
antibody. Briefly, the RT of HIV-1 is completely inactivated by
incubation at 56 degrees C for 20 min, but this inactivation is
inhibited in the presence of a specific antibody directed against this
molecule. We examined the specificity and clinical significance of this
stabilization assay. HIV-1 antibody-positive sera stabilized HIV-1 RT
but not HIV-2 RT, whereas half of these sera cross-neutralized HIV-2 RT.
Antibody titers against RT determined by the neutralization assay and
the stabilization assay were compared with clinical characteristics.
Antibodies against HIV-1 RT were much more frequently detected by the
stabilization assay than by the neutralization assay. Statistically
significant associations were found between stabilizing antibody titer
and CD4+ cell number in peripheral blood of patients and also between
antibody titer and CD4+/CD8+ ratios. These results indicate that our new
stabilization assay to detect specific antibodies against RT of HIV-1 is
useful as a clinical marker of infection and progress of the disease.
DE Adult *Antibody Specificity AIDS Serodiagnosis/*METHODS Blotting,
Western Enzyme Activation Enzyme Stability Female Heat Human HIV
Antibodies/*BLOOD/CLASSIFICATION HIV-1/*IMMUNOLOGY Male
Neutralization Tests RNA-Directed DNA
Polymerase/BLOOD/*CHEMISTRY/*IMMUNOLOGY 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).