Antinociceptive effectiveness of triterpenes from rosemary in visceral nociception

作者：Laura Martinez Ana; Eva Gonzalez Trujano Maria; Chavez Marco; Pellicer Francisco

来源：Journal of Ethnopharmacology, 2012, 142(1): 28-34.

DOI：10.1016/j.jep.2012.03.052

• Antinociception
• Micromeric acid
• Oleanolic acid
• Rosmarinus officinalis L.
• Triterpenes
• Ursolic acid
• Visceral pain

Ethnopharmacological relevance: Rosemary is a species used worldwide as a common spice, but also in folk medicine for their therapeutic properties against abdominal pain. The rationale of this study was to examine the involvement of triterpenes and to compare their effectiveness in the antinociceptive effect of an ethanol extract of Rosmarinus officinalis L (Lamiaceae). %26lt;br%26gt;Material and methods: Fractionation and HPLC analyses allowed the identification of a mixture of micromeric (121 mg/g), oleanolic (64 mg/g) and ursolic (83 mg/g) acids as partial antinociceptive responsible in an ethyl acetate fraction of R. officinalis by using the acetic acid-induced abdominal constrictions model in mice. %26lt;br%26gt;Results: These triterpenes individually evaluated produced a significant and dose-dependent antinociceptive response with similar potency as follows: ED50 = 1.1 mg/kg (0.9-1.3 mg/kg), 2.1 mg/kg (1.6-2.6 mg/kg) and 1.6 mg/kg (1.1-2.1 mg/kg), respectively, by using the intraperitoneal (i.p.) route of administration in mice. Their maximal antinociceptive efficacy resembled that produced by ketorolac (10 mg/kg, i.p.), a common clinic analgesic. %26lt;br%26gt;Conclusion: Our results provide evidence that these triterpenes participate in the antinociceptive activity of R. officinalis. In addition, each individual triterpene showed a similar potency to that observed with ketorolac, a non-steroidal anti-inflammatory drug, in this experimental model.

• 出版日期2012-6-26