title: Influence of proquazone (Biarison) on the levels of complement components (C3 and C4) in synovial fluid and on IgM in serum in patients with active rheumatoid arthritis. A preliminary report.
abstract: Four patients with erosive rheumatoid arthritis and one with psoriasis arthropathy were treated with 600-900 mg/day proquazone for 4-7 weeks. All patients had acute knee effusions. The complement components C3 and C4, as well as IgG, IgA, IgM and total protein, were measured in both the synovial fluid and serum before and after treatment. In the 4 patients with rheumatoid arthritis, a marked increase in C3 and/or C4 levels in the synovial fluid was found, correlating in 3 cases with a good clinical response. However, no corresponding changes in complement levels were recorded in the serum. The patient with psoriasis arthropathy did not show any reaction. These preliminary results suggest that proquazone may influence the immunological processes in rheumatoid arthritis.
mesh_terms: D000328:Adult; D000368:Aged; D000893:Anti-Inflammatory Agents / Q000494:pharmacology* / Q000627:therapeutic use; D001172:Arthritis, Rheumatoid / Q000188:drug therapy / Q000276:immunology*; D003176:Complement C3 / Q000378:metabolism*; D003181:Complement C4 / Q000378:metabolism*; D005260:Female; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000378:metabolism*; D007592:Joint Diseases / Q000188:drug therapy / Q000209:etiology / Q000276:immunology; D008297:Male; D008875:Middle Aged; D011565:Psoriasis / Q000150:complications; D011799:Quinazolines / Q000494:pharmacology*; D013582:Synovial Fluid / Q000276:immunology
chemical_list: D000893:Anti-Inflammatory Agents; D003176:Complement C3; D003181:Complement C4; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D011799:Quinazolines