title: Regulation of interleukin-2 production in rheumatoid arthritis.
abstract: The regulation of interleukin-2 (IL-2) production was investigated using mononuclear cells from synovial fluid (SF) and peripheral blood of 12 patients with classical and active rheumatoid arthritis. Decreased phytohemagglutinin (PHA) stimulated IL-2 production by lymphocytes was observed in rheumatoid peripheral blood (5.3 +/- 10.9 units/ml) and SF (3.8 +/- 5.2 units/ml) compared to peripheral blood from 12 normal donors (18.1 +/- 15.4 units/ml) and SF from 5 patients with other rheumatic diseases (11.9 +/- 10.9 units/ml). Indomethacin, phorbol myristate acetate and irradiation of suppressor cells increased IL-2 values in rheumatoid SF and peripheral blood but did not restore normal IL-2 production. IL-2 production did not correlate with clinical activity in patients with RA.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000097:blood / Q000378:metabolism*; D002460:Cell Line; D005260:Female; D006801:Humans; D007213:Indomethacin / Q000494:pharmacology; D007376:Interleukin-2 / Q000096:biosynthesis* / Q000097:blood / Q000502:physiology; D008214:Lymphocytes / Q000378:metabolism / Q000528:radiation effects; D008297:Male; D008875:Middle Aged; D013582:Synovial Fluid / Q000378:metabolism; D013602:T-Lymphocytes, Cytotoxic / Q000378:metabolism; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D007376:Interleukin-2; D013755:Tetradecanoylphorbol Acetate; D007213:Indomethacin