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| DOI | 10.1016/J.EJPHAR.2024.177093 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Objective: Herein, we investigate the potential analgesic effect of a newly synthesized chalcone-derived apocynin in a neurogenic pain model. Methods: Molecular docking was used to foretell the apocynin binding features and dynamics with the TRPV1 channel, and the activity was tested in vitro, using transfected HEK 293T cells with the rat TRPV1 receptor. The analgesic effect of apocynin was investigated using a capsaicin-induced pain model. The expression of TRPV1, TRPA1, TRPM8, and MAPKs was assessed by electrophoresis, and immunosorbent assays were performed to quantify the neurotransmitters Substance P, Glutamate, and CGRP. A survival assay using Galleria mellonella was carried out to determine the toxicity. Results: We observed that apocynin exhibits greater thermodynamic stability. Upon apocynin ligand binding, it changes the electrostatic potential for a predominantly electronegative state in the interior and neutral in its external vanilloid pocket. Treatment of apocynin induces antinociceptive effects against the noxious challenge of capsaicin. Histologically, apocynin decreased the number of TRPV1+ immunopositive cells. Electrophoresis showed reduced phosphorylation of p44/42 (ERK1/2) and decreased protein levels of substance P, and CGRP. In the survival assay, apocynin showed low toxicity. Conclusions: In conclusion, we provide proof-of-principles that the newly synthesized apocynin compound effectively prevented nociception in a neurogenic model of orofacial pain.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Machado, Taisa Maria Mendes Matuiama | - |
Fac Sao Leopoldo Mandic - Brasil
Faculdade Sao Leopoldo Mandic - Brasil |
| 2 | Aquino, Iara Goncalves | - |
Fac Sao Leopoldo Mandic - Brasil
Faculdade Sao Leopoldo Mandic - Brasil |
| 3 | Franchin, Marcelo | Hombre |
Fed Univ Alfenas Unifal MG - Brasil
Univ Limerick - Irlanda Universidade Federal de Alfenas - Brasil University of Limerick - Irlanda |
| 4 | Zarraga, Miguel O. | - |
Universidad de Concepción - Chile
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| 5 | Bustos, Daniel | Hombre |
Universidad Católica del Maule - Chile
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| 6 | Spada, Fernanda Papa | - |
UNIV SAO PAULO - Brasil
Universidade de São Paulo - Brasil |
| 7 | Napimoga, Marcelo Henrique | - |
Fac Sao Leopoldo Mandic - Brasil
Faculdade Sao Leopoldo Mandic - Brasil |
| 8 | Clemente-Napimoga, Juliana Trindade | - |
Fac Sao Leopoldo Mandic - Brasil
Faculdade Sao Leopoldo Mandic - Brasil |
| 9 | Alencar, Severino Matias | - |
UNIV SAO PAULO - Brasil
Universidade de São Paulo - Brasil |
| 10 | Benso, Bruna | Mujer |
Pontificia Universidad Católica de Chile - Chile
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| 11 | Abdalla, Henrique Ballassini | - |
Fac Sao Leopoldo Mandic - Brasil
Faculdade Sao Leopoldo Mandic - Brasil |
| Fuente |
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| São Paulo Research Foundation (FAPESP) |
| Fondo Nacional de Desarrollo Científico y Tecnológico |
| Fundação de Amparo à Pesquisa do Estado de São Paulo |
| Agencia Nacional de Investigación y Desarrollo |
| ANID/FONDECYT Iniciacion |
| Agradecimiento |
|---|
| The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was partially supported by the Sao Paulo Research Foundation (FAPESP, 2017/22334-9) to M.H.N. and by the ANID/Fondecyt Iniciacion (#11230490) to B.B. |
| The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was partially supported by the S\u00E3o Paulo Research Foundation (FAPESP 2017/22334-9) and by the ANID/Fondecyt Iniciacion (#11230490) to B.B. |