Pharmacological and Toxicological Study of Coumarinolignoids from Cleome viscosa in Small Animals for the Management of Rheumatoid Arthritis.

This study aims to explore the possible pharmacological potential of Linn (Cleomaceae), an annual weed, into therapeutic value-added products. In the present study, we have explored the pharmacological and toxicological profile of coumarinolignoids isolated from for the management of rheumatoid arthritis and related complications in a small animal model. To avoid the biasness during experiments on animals, we have coded the isolated coumarinolignoids as to perform the experimental pharmacological study. was orally administrated (30,100, 300 mg/kg) to animal models of collagen-induced arthritis (CIA), carrageenan-induced acute inflammation, thermal and chemical-induced pain, and Brewer's yeast-induced pyrexia. Oral administration of significantly decreases the arthritis index, arthritis score, and increases the limb withdrawal threshold in the CIA model in experimental rats. The anti-arthritis studies revealed that the anti-inflammatory effect of was associated with inhibition of the production of inflammatory mediators like TNF-, IL-6, IL-17A, MMP-1, MMP-9, Nitric oxide, and C-RP in CIA rat's serum, and also reduced the NFB-p65 expression as evidence of immunohistochemistry in knee joint tissue of CIA rats, in a dose-dependent manner. Further individual experiments related to arthritis-related complications in experimental animals demonstrated the analgesic, anti-inflammatory, and antipyretic potential of in a dose-dependent manner. Further, an acute oral toxicity study concluded that is safe in experimental animals up to 2,000 mg/kg dose. The results of this study suggested that the oral administration of may be a therapeutic candidate for further investigation in the management of rheumatoid arthritis and related complications.