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M9620807.TXT
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1996-02-26
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Document 0807
DOCN M9620807
TI Anti-CD4 activity of normal human immunoglobulin G for therapeutic use.
(Intravenous immunoglobulin, IVIg).
DT 9602
AU Hurez V; Kaveri SV; Mouhoub A; Dietrich G; Mani JC; Klatzmann D;
Kazatchkine MD; INSERM U 28, Hopital Broussais, Paris, France.
SO Ther Immunol. 1994 Oct;1(5):269-77. Unique Identifier : AIDSLINE
MED/96053309
AB The effects of intravenously administered normal immunoglobulin G (IVIg)
in autoimmune diseases are dependent on the ability of IVIg to interact
with surface molecules of lymphocytes. In the present study, we
demonstrate the presence of anti-CD4 activity in IVIg by showing the
ability of IVIg to bind to CD4 and to inhibit CD4-dependent cellular
functions. Binding of IVIg to recombinant soluble human CD4 was assessed
by ELISA, immunoblotting and real time analysis of complex formation.
Anti-CD4 antibodies isolated from IVIg by affinity-chromatography bound
to human CD4+ T cells. These anti-CD4 antibodies inhibited proliferative
responses in MLR and infection of CD4+ human T cells with HIV. These
results indicate that IVIg contains antibodies reactive with human CD4
and that these anti-CD4 antibodies exhibit biological functions. The
presence of anti-CD4 antibodies in IVIg may be relevant to the
immunoregulatory effects of normal polyspecific immunoglobulin G.
DE Adjuvants, Immunologic Antigens, CD4/*IMMUNOLOGY Blotting, Western
Fluorescent Antibody Technique, Direct Human HIV Infections/IMMUNOLOGY
HIV-1/GROWTH & DEVELOPMENT Immunoassay Immunoglobulins,
Intravenous/*IMMUNOLOGY Lymphocyte Culture Test, Mixed Protein Binding
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).