Chronic Anti-Inflammatory Activity of Ethanolic Extract of Leaves of Clerodendrum viscosum by Carrageenin Induced Paw Oedema in Wistar Albino Rats
Journal of Pharmaceutical Research International · pp. 579–586 · Published 24 May 2013
10.9734/BJPR/2013/3505Abstract
Aims: The aim of the study was to investigate chronic anti-inflammatory activity of ethanolic extract of the leaves of Clerodendrum viscosum (EELCV) by carrageenin induced paw oedema in Wistar albino rats. Study Design: Prospective. Place and Duration of Study: Dept of Pharmacology, Yenepoya Medical College, Yenepoya University, Derlakatte, Mangalore 575018, Karnataka, India. June 2010-August 2010. Methodology: Dried powdered leaves of Clerodendrum viscosum were subjected to Soxhlet extraction by using 90 % ethanol. Based on acute oral toxicity study according to Organization for Economic Cooperation and Development (OECD) guidelines no. 423, three doses of the test drug was selected (75, 150 & 300 mg/kg) for rats, and were subjected to screening for anti-inflammatory activity. Results: Oral administration of EELCV at doses of 150 mg/kg (P = .01) and 300mg/kg (P = .05) has shown significant anti-inflammatory activity by carrageenin induced paw oedema in Wistar albino rats compared to control. A significant inhibition of oedema formation was also observed at 4th hour. Conclusion: Administration of EELCV orally at the doses of 150 mg/kg (P = .01) and 300mg/kg (P = .05) showed significant anti-inflammatory activity by carrageenin induced paw oedema in Wistar Albino rats. The percentage inhibition of the oedema at 3rd hour was 63.75 % for the dose of 150 mg/kg and 46.30 % for the dose of 300 mg/kg. A significant inhibition was also observed at 4th hour.
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