OBJECTIVE: To investigate the production of type II collagen (CII) antibodies in the synovial fluid (SF) of rheumatoid arthritis (RA) patients, and to examine the HLA dependence of this local production. METHODS: The ELISPOT method was used for enumerating anti-CII-reactive cells. Serologic tissue typing was performed. RESULTS: Anti-CII-reactive cells were found in the SF of 16 of 31 patients, but not in any of the peripheral blood samples obtained in parallel. SF anti-CII antibody production showed no correlation with clinical parameters, but its frequency increased significantly with age. The IgG anti-CII response occurred exclusively in patients who were positive for HLA-DR4 and was significantly associated with DR4. CONCLUSION: Anti-CII production may be important in local immune complex formation. The indirect demonstration of a DR4-restricted T cell response to CII is an indication of a pathogenetic role of collagen autoimmunity in RA.
OBJECTIVE: To investigate the production of type II collagen (CII) antibodies in the synovial fluid (SF) of rheumatoid arthritis (RA) patients, and to examine the HLA dependence of this local production. METHODS: The ELISPOT method was used for enumerating anti-CII-reactive cells. Serologic tissue typing was performed. RESULTS: Anti-CII-reactive cells were found in the SF of 16 of 31 patients, but not in any of the peripheral blood samples obtained in parallel. SF anti-CII antibody production showed no correlation with clinical parameters, but its frequency increased significantly with age. The IgG anti-CII response occurred exclusively in patients who were positive for HLA-DR4 and was significantly associated with DR4. CONCLUSION: Anti-CII production may be important in local immune complex formation. The indirect demonstration of a DR4-restricted T cell response to CII is an indication of a pathogenetic role of collagen autoimmunity in RA.
Authors: E C Andersson; B E Hansen; H Jacobsen; L S Madsen; C B Andersen; J Engberg; J B Rothbard; G S McDevitt; V Malmström; R Holmdahl; A Svejgaard; L Fugger Journal: Proc Natl Acad Sci U S A Date: 1998-06-23 Impact factor: 11.205
Authors: Anca I Catrina; Camilla I Svensson; Vivianne Malmström; Georg Schett; Lars Klareskog Journal: Nat Rev Rheumatol Date: 2016-12-15 Impact factor: 20.543
Authors: Francesco Ria; Romina Penitente; Maria De Santis; Chiara Nicolò; Gabriele Di Sante; Massimiliano Orsini; Dario Arzani; Andrea Fattorossi; Alessandra Battaglia; Gian Franco Ferraccioli Journal: Arthritis Res Ther Date: 2008-11-17 Impact factor: 5.156