title: Effects of D-penicillamine on lymphocyte modulation of synovial collagenase production.
abstract: While D-Penicillamine is effective in the treatment of rheumatoid arthritis, its mechanism of action is unknown. In this study, effects of D-Penicillamine on collagenase production by adherent rheumatoid synovial cells were investigated. D-Penicillamine did not directly affect the synovial collagenase production. However, lymphocyte-free-supernatant (LFS) recovered from lymphocytes exposed to D-Penicillamine in vivo and in vitro significantly reduced collagenase production by adherent synovial cells. LFS from lymphocytes of normal subjects and from non-D-Penicillamine treated rheumatoid patients stimulated collagenase production. These investigations indicate that D-Pencillamine indirectly affects collagenase production by cultured synovial cells and suggests beneficial effects on controlling the primary disease process.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000201:enzymology*; D006801:Humans; D066298:In Vitro Techniques; D008214:Lymphocytes / Q000187:drug effects* / Q000502:physiology; D003012:Microbial Collagenase / Q000096:biosynthesis*; D010396:Penicillamine / Q000494:pharmacology*; D013583:Synovial Membrane / Q000166:cytology / Q000187:drug effects / Q000201:enzymology*
chemical_list: D003012:Microbial Collagenase; D010396:Penicillamine