Document 0214 DOCN M9650214 TI Treatment with an anti-CD4 monoclonal antibody strongly ameliorates established rat adjuvant arthritis. DT 9605 AU Pelegri C; Morante MP; Castellote C; Franch A; Castell M; Unit of Physiology, Faculty of Pharmacy, University of Barcelona,; Spain. SO Clin Exp Immunol. 1996 Feb;103(2):273-8. Unique Identifier : AIDSLINE MED/96152676 AB Some experimental arthritic diseases can be prevented by treatment with anti-CD4 MoAbs. Trials with ongoing disease have not been successful so far. The aim of this study was to ascertain whether W3/25 could reverse adjuvant arthritis (AA), when beginning treatment on day 14, i.e. when the disease was established. Moreover, one group of animals treated with the anti-CD4 MoAb received OX8 MoAb at the same time, thus depleting CD8+ cells from circulation. During treatment with W3/25, a strong amelioration of inflammatory signals were observed, as assessed by means of paw volume increase and arthritic score. However, when treatment stopped, a rebound to arthritis signals occurred. The parallel depletion of CD8+ cells did not modify these effects, thus the combined treatment W3/25 + OX8 gave the same amelioration as treatment with W3/25 alone. These findings indicate that CD4+ cells play an important role in perpetuating rat AA. Moreover, CD8+ cells do not seem to have a regulatory role int he CD4+ cells responsible for the inflammatory response. DE Animal Antibodies, Monoclonal/*THERAPEUTIC USE Antigens, CD4/*IMMUNOLOGY Antigens, CD8/IMMUNOLOGY Arthritis, Adjuvant/*IMMUNOLOGY/THERAPY CD4-Positive T-Lymphocytes/IMMUNOLOGY CD8-Positive T-Lymphocytes/IMMUNOLOGY Female Rats Rats, Wistar Support, Non-U.S. Gov't Time Factors JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).