title: A spontaneous rheumatoid arthritis-like disease in MRL/l mice.
abstract: MRL/l mice spontaneously develop an arthritis very similar in many respects to human rheumatoid arthritis. A detailed morphologic and serologic analysis of this disease revealed the following: (a) a 75% incidence of synovial and periarticular inflammation, very similar to human rheumatoid arthritis, in 5-6 mo-old females, (b) close associations between presence of joint inflammation and subsynovial and/or periarticular vasculitis, and (c) a close correlation between presence of circulating IgM rheumatoid factor (RF) and demonstrable synovial and/or joint pathology, i.e., 95% of mice with significant levels of IgMRF had synovitis and/or arthritis.
mesh_terms: D000375:Aging; D000818:Animals; D000936:Antigen-Antibody Complex; D001172:Arthritis, Rheumatoid / Q000276:immunology* / Q000473:pathology; D001323:Autoantibodies / Q000096:biosynthesis; D005260:Female; D007075:Immunoglobulin M / Q000096:biosynthesis; D008214:Lymphocytes / Q000648:ultrastructure; D008264:Macrophages / Q000648:ultrastructure; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008814:Mice, Inbred NZB; D008815:Mice, Inbred Strains; D010950:Plasma Cells / Q000648:ultrastructure; D012217:Rheumatoid Factor / Q000276:immunology
chemical_list: D000936:Antigen-Antibody Complex; D001323:Autoantibodies; D007075:Immunoglobulin M; D012217:Rheumatoid Factor