Antinociceptive and anti-inflammatory properties from the bulbs of Cipura paludosa Aubl

Greice M R S Lucena, Vinícius M Gadotti, Liana C Maffi, Glauber S Silva, Mariângela S Azevedo, Adair R S Santos
Journal of Ethnopharmacology 2007 May 30, 112 (1): 19-25
This study examined the antinociceptive and anti-inflammatory actions of Cipura paludosa Aubl. in several models of inflammatory pain in mice and rats. The ethanolic extract (EE) from Cipura paludosa (1-300mg/kg) given by i.p. and p.o. routes, 30 or 60min earlier, produced a dose-dependent inhibition of the acetic acid-induced pain and Evans blue leakage in mice with ID(50) values of 2.8 and 17.6mg/kg and 17.2 and 176.1mg/kg, respectively. The EE (10mg/kg, i.p.) also inhibited the allodynia (39+/-6%)- and oedema (97+/-6%)-induced by the intraplantar injection of CFA. In addition, the EE (1-30mg/kg, i.p.) inhibited both mechanical and thermal hyperalgesia induced by prostaglandin E(2), PMA and bradykinin in the rat paw, with ID(50) values of 7.3, 12.1 and 4.7 and 13.9, 18.9 and 1.5mg/kg, respectively. These data demonstrate that EE of Cipura paludosa elicited pronounced antinociceptive and anti-inflammatory actions against some models of inflammatory pain in mice and rats. The mechanism by which the extract produced antinociception still remains unclear, but a great part of this effect seems to be related to modulation of the release or action of pro-inflammatory mediators. Moreover, the antinociceptive action demonstrated in the present study supports, at least partly, the ethnomedical uses of this plant.

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