Planta Med 2010; 76(7): 665-670
DOI: 10.1055/s-0029-1240658
Pharmacology
Original Papers
© Georg Thieme Verlag KG Stuttgart · New York

Antinociceptive Effect of Heliopsis longipes Extract and Affinin in Mice

Myrna Déciga-Campos1 , María Yolanda Rios2 , A. Berenice Aguilar-Guadarrama2
  • 1Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Col. Santo Tomás, México, México
  • 2Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Col. Chamilpa, Cuernavaca, Morelos, México
Further Information

Publication History

received July 29, 2009 revised October 24, 2009

accepted Nov. 2, 2009

Publication Date:
30 November 2009 (online)

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Abstract

Heliopsis longipes is used as analgesic in Mexican traditional medicine. The present study assesses the possible antinociceptive effect of Heliopsis longipes and describes the pharmacological mechanism of action of the antinociceptive effect of affinin, identified as the one active principle in Heliopsis longipes acetone extract. Intraperitoneal administration of H. longipes extract and affinin produced a dose-dependent antinociceptive effect when assessed in mice submitted to acetic acid and capsaicin tests. Affinin-induced antinociception (30 mg/kg, i. p.) was blocked by naltrexone (1 mg/kg, s. c.), p-chlorophenylalanine (80 mg/kg, i. p.) and flumazenil (5 mg/kg, s. c.) suggesting that its pharmacological effect could be due to the activation of opiodergic, serotoninergic and GABAergic systems. In addition, the antinociceptive effect of affinin was attenuated by pretreatment with 1H-[1,2,4]oxadiazolo[1,2-a]quinoxalin-1-one (1 mg/kg, s. c.) and glibenclamide (10 mg/kg, s. c.) suggesting that the nitric oxide-K+ channels pathway could be involved in its mechanism of action. These results suggest that affinin itself or its derivatives may have potential antinociceptive effects.

References

Ph.D. Myrna Déciga-Campos

Sección de Estudios de Posgrado e Investigación
Plan de San Luis y Díaz Mirón s/n
Colonia Santo Tomas

Delegación Miguel Hidalgo

11340 México D. F.

México

Phone: +525 5 57 29 63 00 ext. 5729

Email: mdeciga@ipn.com.mx

Ph.D. María Yolanda Rios

Centro de Investigaciones Químicas

Avenida Universidad 1001

Colonia Chamilpa,

62209 Cuernavaca

Morelos

México

Phone: +52 77 73 29 70 00 ext. 6024

Email: myolanda@uaem.mx