Suppression of rheumatoid factor synthesis by antiidiotypic antibody in rheumatoid arthritis patients with cross-reactive idiotypes

Tsutomu Takeuchi, O. Hosono, J. Koide, M. Homma, T. Abe

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The effect of antiidiotypic antibody on the in vitro production of rheumatoid factor was studied in rheumatoid arthritis patients with cross-reactive idiotypic determinants. Antiidiotypic antibodies (ascites IgG) were developed against monoclonal rheumatoid factor (Ka m-RF) by a cell fusion procedure. These antibodies were idiotype-specific, since: 1) they reacted only with F(ab')2 fragment of Ka m-RF; 2) they failed to react with normal IgM without rheumatoid factor activity; and 3) their F(ab')2 fragment inhibited the rheumatoid factor activity of Ka m-RF. The antiidiotypic antibody strongly suppressed the in vitro production of rheumatoid factor by lymphocytes from unrelated rheumatoid arthritis patients with cross-reactive idiotypes. The suppression was specific, since ascites IgG failed to suppress in vitro anti-keyhole limpet hemocyanin antibody production by the lymphocytes. These results indicate that antiidiotypic antibody may influence the regulation of rheumatoid factor production in patients with rheumatoid arthritis.

Original languageEnglish
Pages (from-to)873-881
Number of pages9
JournalArthritis and Rheumatism
Volume28
Issue number8
DOIs
Publication statusPublished - 1985

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Rheumatoid Factor
Rheumatoid Arthritis
Antibodies
Ascites
Immunoglobulin G
Lymphocytes
Cell Fusion
Antibody Formation
Immunoglobulin M
In Vitro Techniques

ASJC Scopus subject areas

  • Immunology
  • Rheumatology

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Suppression of rheumatoid factor synthesis by antiidiotypic antibody in rheumatoid arthritis patients with cross-reactive idiotypes. / Takeuchi, Tsutomu; Hosono, O.; Koide, J.; Homma, M.; Abe, T.

In: Arthritis and Rheumatism, Vol. 28, No. 8, 1985, p. 873-881.

Research output: Contribution to journalArticle

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