Joint production of IL-22 participates in the initial phase of antigen-induced arthritis through IL-1 production

Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by neutrophil articular infiltration, joint pain and the progressive destruction of cartilage and bone. IL-22 is a key effector molecule that plays a critical role in autoimmune diseases. However, the function of IL-22 in the pathogenesis of RA remains controversial. In this study, we investigated the role of IL-22 in the early phase of antigen-induced arthritis (AIA) in mice. AIA was induced in C57BL/6, IL-22 .sup.?/?.sup. The IL-22 mRNA expression and protein levels in synovial tissue were increased during the onset of A... Mehr ...