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Article Publish Status: FREE
Abstract Title:

Analgesic and anti-inflammatory activities of Piper nigrum L.

Abstract Source:

Asian Pac J Trop Med. 2014 Sep ;7S1:S461-8. PMID: 25312168

Abstract Author(s):

Farhana Tasleem, Iqbal Azhar, Syed Nawazish Ali, Shaista Perveen, Zafar Alam Mahmood

Article Affiliation:

Farhana Tasleem

Abstract:

OBJECTIVE: To evaluate and compare the analgesic and anti-inflammatory activity of pure compound, piperine along with hexane and ethanol extracts of Piper nigrum L. fruit in mice and rats.

METHODS: The analgesic activity was determined by tail immersion method, analgesy-meter, hot plate and acetic acid induced writhing test. While the anti-inflammatory activity was evaluated by carrageenan-induced paw inflammation in rats.

RESULTS: Piperine at a dose of 5 mg/kg and ethanol extract at a dose of 15 mg/kg after 120 min and hexane extract at a dose of 10 mg/kg after 60 min exhibited significant (P<0.05) analgesic activity by tail immersion method, in comparison to ethanol extract at a dose of 10 mg/kg using analgesy-meter in rats. However, with hotplate method, piperine produced significant (P<0.05) analgesic activity at lower doses (5 and 10 mg/kg) after 120 min. A similar analgesic activity was noted with hexane extract at 15 mg/kg. However, in writhing test, ethanol extract significantly (P<0.05) stopped the number of writhes at a dose of 15 mg/kg, while piperine at a dose of 10 mg/kg completely terminated the writhes in mice. In the evaluation of anti-inflammatory effect using plethysmometer, piperine at doses of 10 and 15 mg/kg started producing anti-inflammatory effect after 30 min, which lasted till 60 min, whereas hexane and ethanol extracts also produced a similar activity at a slightly low dose (10 mg/kg) but lasted for 120 min.

CONCLUSIONS: It is concluded from the present study that Piper nigrum L possesses potent analgesic and anti-inflammatory activities.

Study Type : Animal Study

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