Original Research

Study on the analgesic, anti-inflammatory and hypouricemic effects of 50% ethanolic extract from Jasminum subtriplinerve Blume

Abstract

Previous studies have reported in vitro antioxidant and inhibitory activity on xanthine oxidase of Jasminum subtriplinerve Blume, Oleaceae, which suggested the potential prevention of gout and supplementary treatment. This study evaluated analgesic, anti-inflammatory, and hypouricemic effects of the 50% ethanolic extract of J. subtriplinerve (EEJS) at the oral doses of 800 and 1200 mg/kg in mice. For acute oral toxicity, after oral administration of single doses of EEJS; mortality and toxic signs in male and female mice were noticed within 72 hours and 14 days. The analgesic effect was observed in acid acetic induced writhing in mouse model within 40 minutes. The anti-inflammatory effect was determined in mice-induced edema by 1% carrageenan. The hypouricemic effect was evaluated in mice with the peritoneal injection of potassium oxonate inducing acute and chronic hyperuricemia. The results showed that there was not any toxic sign in mice given orally at the maximum dose (Dmax) of 20 g EEJS/kg. At the dose of 800 and 1200 mg/kg, EEJS did exhibit analgesic effect until 40th minute. EEJS 1200 mg/kg expressed acute anti-inflammatory effect. EEJS had no acute hypouricemic effect at the oral doses of 800 and 1200 mg/kg. When given to mice with chronic hyperuricemia, 800 mg/kg EEJS reduced 30-44% blood uric acid concentration compared to pathological group. In conclusion, EEJS did not cause any toxic sign in mice at the Dmax of 20 g/kg. This extract had analgesic and chronic hypouricemic effects at the oral dose of 800 mg/kg in mice. 

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