EVALUATION OF ANTI-ARTHRITIC POTENTIAL OF THE HYDRO-ALCOHOLIC EXTRACT OF THE STEM BARK OF PLUMERIA RUBRA IN FREUND’S COMPLETE ADJUVANT-INDUCED ARTHRITIS IN RATS.

To investigate the anti-arthritis effects of hydro-alcoholic stem bark extract (HSBE) of Plumeria rubra in Complete Freund’s adjuvant (CFA) induced arthritis model in wistar albino rats. Paw edema was produced by sub-plantar injection of 0.1 ml of complete Freund’s adjuvant (CFA) and paw volume was measured with plethysmometer. HSBE of the plant P. rubra (250 mg/kg & 500 mg/kg body weight) was administered orally for 14 days. Arthritic assessment was carried out based on parameters including paw edema, body weight, and spleen index. At the end of study period, animals were sacrificed and various biochemical, oxidative stress parameters, radiological and histological parameters were evaluated. Administration of HSBE significantly attenuated the behavioral, biochemical, hematological, radiological alteration induced by the CFA in dose dependent manner. From our study, we can conclude that the hydro-alcoholic extract of the plant has the potent activity to check the arthritis edema as well as inflammation & body weight. The potency of ant-oxidant activity was managed significantly. The radiological and histopathological investigations revealed that the extract produce significant reduction in mononuclear infiltration and bone erosion showed against adjuvant induced arthritis