The Anti-Nociceptive Effect of Aloe. Vera Aqueous Extract in Fructose-Fed Male Rats

Background & Objective: Aloe Vera extract is used as an anti-inflammatory and anti-bradikinin agent in laboratory animals. The aim of this survey was to evaluate the ant-nociceptive effect of A. Vera aqueous extract in fructose-fed male rats. Materials & Methods: Forty-five Wistar-Albino male rats were equally and randomly divided into five groups including sham operated and four test groups. Sham operated group consumed tap water and the test groups consumed fructose-enriched water. Test groups 2, 3 and 4 additionally received, 0, 100, 150 and 200 mg/kg of A. Vera extract, respectively, whereas the other test group received distilled water daily. Tail flick reaction time, serum glucose and oral glucose tolerance test (OGTT) were measured. The results were analyzed by SPSS software using ANOVA and Tukey tests. Results were expressed as mean +/- SD. Statistical differences were considered significant at p<0.05. Results: The results showed that tail flick reaction time significantly increased in test group 3 which received 200 mg/kg A. Vera extract comparing with that of sham operated group. However, OGTT and serum glucose value were significantly increased in all fructose-fed male rats comparing with those of sham operated group. Conclusion: These results indicated that A. Vera aqueous extract can affect tail flick reaction time in fructose-fed male rats. Further studies are required to show the exact mechanism of anti-nociceptive effect of A. Vera extract.