Abstract
The effect of antiarthritic drugs on hindpaw edema and enhanced IL-1 production by macrophages from adjuvant arthritic (AA) rats was determined. Hindpaw edema was inhibited by indomethacin (INDO), methotrexate (MTX) or prednisolone (PRED) but not by D-penicillamine (D-PEN) or chloroquine (CQ). IL-1 production by splenic adherent cells was decreased by MTX and PRED; whereas, IL-1 production by peritoneal exudate cells was decreased by PRED, INDO and D-PEN. This normalization in IL-1 production is not caused by a direct inhibition of IL-1 production by the drugs but most likely reflects clinical improvement in the disease. Whether reduction in IL-1 levels provides a more meaningful parameter than paw edema for assessing clinical efficacy of disease-modifying drugs remains to be determined.
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