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Antiallodynic Effect of Piperine in Neuropathic Rats

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Abstract

Neuropathic pain is a disabling syndrome difficult to manage. Currently, pharmacological treatment of neuropathic patients provides an unsatisfactory relief of pain. Recent reports suggested that piperine has anti-inflammatory and antinociceptive effects. Therefore, the aim of this study was to investigate the antiallodynic effect of piperine, as well as the possible antinociceptive mechanism involved in its antiallodynic effect. Piper nigrum L., Piperaceae, was used to extract the piperine. Spinal nerve ligation L5/L6 model was used to induce allodynia in rats. Intraperitoneal administration of increasing doses of piperine (3.1–100 mg/kg) reduced allodynia in rats. The administration of capsazepine (selective TRPV1 antagonist, 5 and 30 μg/i.t.) and bicuculline (GABAA antagonist, 3 and 30 μg/i.t.), but not SKF-96365 (TRPC antagonist, 3 and 30 μg/i.t.), prevented the piperine-induced (56 mg/kg, i.p.) antiallodynic effect in a dose-dependent manner. HC-030031 (selective TRPA1 antagonist, 3 and 30 μg/i.t.) avoided only partially piperine-induced (56 mg/kg, i.p.) antiallodynic effect. Data suggest that piperine induces antiallodynic effect in neuropathic rats, and its antiallodynic effect involves the activation of TRPV1 and GABAA receptors. Piperine could be useful to treat neuropathic pain in human beings.

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Acknowledgments

This work is part of the thesis of Luis Arturo Sánchez-Trujillo and Jorge Luis Mendoza-Monroy, who acknowledges fellowship from Consejo Nacional de Ciencia y Tecnología (604160).

Funding

This work was supported by the Grants Programa de Apoyo a la Investigación y al Posgrado 5000-9143, from Facultad de Química and Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica IN216516 from Dirección General de Asuntos del Personal Académico, Universidad Nacional Autónoma de México and grant A1-S-9698 from Consejo Nacional de Ciencia y Tecnología.

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Authors and Affiliations

Authors

Contributions

LAST and JLMM carried the laboratorial work as a part of the academic thesis degree. HIRG and AN participated in the conception and design study. JLBL participated in the supervision of experiments. Data analysis and interpretation data were carried by LAST, JLMM, HIRG, GNQB, JLBL, and AN. GNQB, HIRG, and AN participated in the draft of the manuscript as well the intellectual content of this; final approval of the version was revised and submitted by GNQB, HIRG, and AN.

Corresponding authors

Correspondence to Geovanna Nallely Quiñonez-Bastidas or Andrés Navarrete.

Ethics declarations

All experiments were conducted in accordance with the guidelines on ethical standards for investigation of experimental pain in animals (Zimmermann 1983), with the requirements published by the Secretariat of Agriculture and Rural Development (SAGARPA, Mexico) in the technical specifications for the production, care, and use of laboratory animals (NOM-062-ZOO-1999), and in a compliance with international rules as the guide for the care and use of laboratory animals (National Research Council). In addition, the study was approved by the Ethics Committee for the Use of Animals in Pharmacological and Toxicological Testing (Faculty of Chemistry, UNAM) with the code OFICIO/FQ/CICUAL/199/17.

Conflict of Interest

The authors declare that they have no conflicts of interest.

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Sánchez-Trujillo, L.A., Mendoza-Monroy, J.L., Rocha-González, H.I. et al. Antiallodynic Effect of Piperine in Neuropathic Rats. Rev. Bras. Farmacogn. 30, 482–487 (2020). https://doi.org/10.1007/s43450-020-00047-z

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  • DOI: https://doi.org/10.1007/s43450-020-00047-z

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