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M94A3084.TXT
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1994-10-25
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Document 3084
DOCN M94A3084
TI Structural change in oligosaccharide chains of IgG in HIV-1 infected
individuals.
DT 9412
AU Mizuochi T; Nakata M; Oka S; Shimada K; School of Engineering, Tokai
University, Kanagawa, Japan.
SO Int Conf AIDS. 1994 Aug 7-12;10(1):157 (abstract no. PB0054). Unique
Identifier : AIDSLINE ICA10/94369491
AB OBJECTIVE: To determine if structures of oligosaccharide chains of IgG
from HIV-1 infected individuals change according to the disease
development. METHODS: IgG was purified from sera of hemophiliacs (n = 5)
and HIV-1 infected hemophiliacs at CDC stage 2 (n = 5), 3 (n = 5), and 4
(n = 4) by ammonium sulfate precipitation followed by column
chromatography with DEAE-cellulose and Sephacryl S-300. The
oligosaccharide chains were liberated from IgG by hydrazinolysis and
labelled with p-aminobenzoic acid ethyl ester, and the structures were
analyzed by enzymatic microsequencing and HPLC. RESULTS: Although no
difference from the uninfected individuals in the structures of IgG
oligosaccharides was observed in CDC2, the level of galactosylation of
the IgG oligosaccharide chains was higher at CDC3 than CDC2 (P < 0.03)
and lower at CDC4 than CDC3 (P < 0.002). CONCLUSION: The oligosaccharide
chains of serum IgG could be a useful biochemical marker for the
follow-up of HIV-1 infected individuals. The structural change suggested
the involvement of subpopulation of B cells in the process of the
disease development.
DE B-Lymphocyte Subsets/IMMUNOLOGY Chromatography, High Pressure Liquid
Human HIV Infections/CLASSIFICATION/*DIAGNOSIS/IMMUNOLOGY
HIV-1/*IMMUNOLOGY IgG/BLOOD/*CHEMISTRY
Oligosaccharides/BLOOD/*CHEMISTRY MEETING ABSTRACT
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).