Potent anti-nociceptive and anti-inflammatory effects of methanol fraction of Otostegia persica extract and its components

نویسندگان

  • H. Salehizadeh Department of Pharmacognosy, Faculty of Pharmacy and Medicinal Plant Research Center, Tehran University of Medical Sciences, Tehran, Iran.
  • N. Yassa Department of Pharmacognosy, Faculty of Pharmacy and Medicinal Plant Research Center, Tehran University of Medical Sciences, Tehran, Iran.
  • S. Khezrrahdoost Department of Pharmacognosy, Faculty of Pharmacy and Medicinal Plant Research Center, Tehran University of Medical Sciences, Tehran, Iran.
  • S.N. Ostad Department of Toxicology & Pharmacology and Rational Drug Use Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran.
  • Z. Tofighi Department of Pharmacognosy, Faculty of Pharmacy and Medicinal Plant Research Center, Tehran University of Medical Sciences, Tehran, Iran.
چکیده مقاله:

Background and objectives: Otostegia persica (Labiatae) is an endemic plant of Iran and is used for its anti-inflammatory properties in folk medicine of Sistan and Baluchestan province. The aim of the present study was to investigate the anti-nociceptive and anti-inflammatory effects of O. Persica different fractions and identification of the natural compounds from the most active fraction. Methods: Total extract of O. Persica was fractionated with petroleum ether (PE), chloroform (CL), ethyl acetate (EA), n-butanol (BU) and methanol (ME). The analgesic activities of different fractions were determined by formalin test. Then, activity of effective fractions was investigated on carrageenan-induced paw edema assay. Finally, the compounds of effective fraction were isolated and their structures were elucidated. Results: Anti-nociceptive activity of EA and BU fractions (100 mg/kg) and ME fraction (100 and 200 mg/kg) demonstrated significant difference with normal saline during the second phase of the formalin test. ME fraction showed higher analgesic effects in comparison to indomethacin (p<0.05), with IC50 equal to 85.87 mg/kg. Among EA, BU and ME fractions which were selected for anti-inflammatory investigation, EA could not reduce rat paw edema after 6 h. The swelling inhibition percentage of ME was similar to that induced by indomethacin at the same time (p>0.05). Vicenin-2 and isorhamnetin-3-O-glucoside were elucidated from ME as the effective anti-inflammatory fraction. Conclusion: It was concluded that the existence of flavonoids in O. persica extract could play an important role for its anti-nociceptive and anti-inflammatory effects similar to various non-steroidal anti-inflammatory drugs (NSAIDS) and inhibitors of nitric oxide synthase (NOS).

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potent anti-nociceptive and anti-inflammatory effects of methanol fraction of otostegia persica extract and its components

background and objectives: otostegia persica (labiatae) is an endemic plant of iran and is used for its anti-inflammatory properties in folk medicine of sistan and baluchestan province. the aim of the present study was to investigate the anti-nociceptive and anti-inflammatory effects of o. persica different fractions and identification of the natural compounds from the most active fraction. met...

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عنوان ژورنال

دوره 4  شماره 2

صفحات  23- 29

تاریخ انتشار 2017-04-01

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