Evaluation of ethanolic extract of leaves of Abutilon indicum on carrageenan-induced rat paw edema

Abstract

Background: Inflammation is described as a localized physical condition whereat part of the body becomes swollen, reddened, hot, and consistently painful, largely as a response to injury or infection. Aim and Objectives: The current study is designed to study the Abutilon indicum for its anti-inflammatory activity in albino rats-induced paw edema by carrageenan. Materials and Methods: Randomly 30 albino rats from both sexes were taken and divided into five groups, six in each. Normal saline 25 mL/kg (control), diclofenac 9 mg/kg (standard), and three different doses of plant extract (EEAI) such as 250, 500, and 1000 mg/kg (3 test groups) were given in respective groups, after 1-h injection of 0.1 mL of 0.2% carrageenan solution into the sub plantar region of the right hind paw. At 0 h, after 1, 2, and 3 h, paw edema volume was measured by mercury displacement method using plethysmograph. The percentage of edema inhibition was measured in all five groups. Results: The percentage of edema inhibition for EEAI 500 mg/kg was 6.20%, 17.8%, and 26.72% after 1st, 2nd and 3rd h respectively and for EEAI 1000 mg/kg was 8.26%, 20.7%, 31.61% after 1st, 2nd, and 3rd h, respectively. Significant edema inhibition was observed after 2nd and 3rd h of drug administration (P < 0.05) in both groups treated with EEAI 500 and 1000 mg/kg. Conclusion: Ethanolic extract of A. indicum had shown dose dependent anti-inflammatory activity.