ISSN 2326-7267
International Journal of Pharmacy and Pharmacology ISSN: 2326-7267 Vol. 4 (5), pp. 001-007, May, 2015. © International Scholars Journals
Full Length Research Paper
Analgesic and anti-inflammatory activities of Aloe ferox Mill. aqueous extract
M. Mwale1 and P. J. Masika2*
1Department of Livestock and Pasture Science, University of Fort Hare, P. Bag X1314, Alice 5700, South Africa.
2Agricultural and Rural Development Research Institute (ARDRI), University of Fort Hare, P. Bag X1314, Alice 5700, South Africa.
Accepted 16 January, 2015
Abstract
Pharmacological activities of leaf gel and pulp of Aloe ferox have been extensively evaluated. However, there is scanty information on the pharmacological activities of the whole leaf of A. ferox. Carrageenan, histamine and formaldehyde- induced rat paw oedema were conducted to evaluate anti-inflammatory activity of A. ferox whole leaf aqueous extract. Tail flick, formalin and acetic acid tests were conducted to assess the analgesic activity of the plant. A. ferox exhibited highest anti-inflammatory and analgesic activities in the highest dose (400 mg/kg) tested. This dose level exerted highest anti-inflammatory activity; 78.2 and 89.3% for carrageenan and formaldehyde-induced rat paw oedema, respectively. The analgesic activity was 57.1 and 67.3% for the 400 mg/kg dose in phase 1 and 2, respectively of formalin test and 88.2% in acetic acid test. A. ferox reduced inflammation and relieved pain in rats at the highest dose level studied. This supports the extensive use of the plant as an antihelmintic reducing the inflammation and pain that might have been caused by gastro-intestinal parasite infections.
Key words: Leaf extract, pain reduction, oedema inhibition.