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October 2021

J Ethnopharmacol. 1997 Oct; 58(2): 125-9.

Antinociceptive effects of Trigonella foenum-graecum leaves extract.

Javan M, Ahmadiani A, Semnanian S, Kamalinejad M.

Department of Pharmacology, Shaheed Beheshti University of Medical Sciences, Tehran, Iran.

There are some reports concerning the antinociceptive effects of the plant Trigonella foenum-graecum (TFG) in Iranian traditional medicine. Because of the side effects of nonsteroidal anti-inflammatory and antinociceptive drugs, and in search for more potent and less harmful compounds, we tried to study the antinociceptive effects of TFG leaves by using tail-flick and formalin tests. Intraperitoneal (i.p.) administration of 500 mg/kg of TFG extract and 100 and 300 mg/kg of sodium salicylate (SS), as a positive control, did not show any effect in the tail-flick test, but the 1000 and 2000 mg/kg of the extract produced significant increase in the tail-flick latency. SS (300 mg/kg, i.p.) induced antinociception in the second phase of the formalin test. TFG (500 mg/kg, i.p.) demonstrated antinociception only in the first phase, but 1000 and 2000 mg/kg, i.p. doses alleviated the pain in both phases. Preliminary LD50 of the extract was very close to 4000 mg/kg, i.p. We conclude that: (1) the extract of TFG leaves produces antinociceptive effects through central and peripheral mechanisms; (2) the antinociceptive effects of 2000 mg/kg of the extract was more potent than 300 mg/kg of SS.

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