title: Antinociceptive and anti-inflammatory properties from the bulbs of Cipura paludosa Aubl.
abstract: 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.
authors.affiliation: Núcleo da Saúde, Universidade Federal de Rondônia, Campus Universitário, José Ribeiro Filho, BR 364, Km 9.5, Porto Velho 78980-500, RO, Brazil.
authors.forename: Greice M R S
authors.initials: GM
authors.lastname: Lucena
authors.forename: Vinícius M
authors.initials: VM
authors.lastname: Gadotti
authors.forename: Liana C
authors.initials: LC
authors.lastname: Maffi
authors.forename: Glauber S
authors.initials: GS
authors.lastname: Silva
authors.forename: Mariângela S
authors.initials: MS
authors.lastname: Azevedo
authors.forename: Adair R S
authors.initials: AR
authors.lastname: Santos
mesh_terms: D000700:Analgesics / Q000494:pharmacology* / Q000627:therapeutic use; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000494:pharmacology* / Q000627:therapeutic use; D004195:Disease Models, Animal; D004305:Dose-Response Relationship, Drug; D005260:Female; D027621:Iridaceae; D008297:Male; D051379:Mice; D010146:Pain / Q000188:drug therapy* / Q000209:etiology; D010936:Plant Extracts / Q000494:pharmacology / Q000627:therapeutic use; D051381:Rats; D017208:Rats, Wistar
chemical_list: D000700:Analgesics; D000893:Anti-Inflammatory Agents; D010936:Plant Extracts