La actividad espasmolítica del aceite esencial obtenido de Lippia microphylla Cham. (Verbenaceae) está mediada por la modulación de la señalización del calcio en modelos animales y celulares

Autores/as

DOI:

https://doi.org/10.33448/rsd-v10i7.16060

Palabras clave:

Lippia microphylla Cham; Verbenaceae; Aceite essencial; Timol; ; Carvacrol; Músculo liso intestinal.

Resumen

Las especies del género Lippia (Verbenaceae) se utilizan ampliamente en la medicina tradicional para tratar desórdenes respiratorios y gastrointestinales. En este estudio, el efecto relajante del aceite esencial obtenido de Lippia microphylla Cham. (LM-EO) y sus componentes principales en el íleon de cobaya, así como los mecanismos implicados. LM-EO inhibió las contracciones fásicas y relajó la tonicidad inducida por varios agentes contráctiles en el íleon de cobaya. Se observaron resultados similares en los protocolos que utilizan timol y carvacrol, los componentes principales de LM-EO. Se sugirió el bloqueo de los canales de calcio dependientes de voltaje (CaV) ya que LM-EO se desplazó hacia la derecha y de manera no paralela las contracciones acumulativas inducidas por CaCl2 y se confirmó cuando LM-EO relajó el íleon precontraído por S‑(‑)‑Bay K8644, un agonista selectivo de CaV. En la capa muscular circular del íleon, LM-EO inhibió las contracciones fásicas, siendo equipotente en relación a los efectos sobre el íleon intacto. En miocitos aislados de la capa de íleon longitudinal, LM-EO redujo la intensidad de la fluorescencia inducida por histamina, de manera similar al verapamilo (bloqueador de CaV), lo que indica una reducción en la concentración de calcio citosólico ([Ca2+]c). Por tanto, LM-EO presenta actividad espasmolítica en el íleo de cobaya al bloquear el CaV y la consiguiente reducción de [Ca2+]c. Estos resultados se muestran como una justificación para el uso de L. microphylla como producto terapéutico en trastornos intestinales.

Citas

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Publicado

11/06/2021

Cómo citar

OLIVEIRA, G. A. de; PEREIRA, J. C.; MARTINS, I. R. R.; CORREIA, A. C. de C.; TRAVASSOS, R. de A.; SILVA, M. da C. C.; SOUZA, I. L. L. de; TAVARES, J. F.; PAREDES-GAMERO, E. J. .; SILVA, B. A. da. La actividad espasmolítica del aceite esencial obtenido de Lippia microphylla Cham. (Verbenaceae) está mediada por la modulación de la señalización del calcio en modelos animales y celulares. Research, Society and Development, [S. l.], v. 10, n. 7, p. e0410716060, 2021. DOI: 10.33448/rsd-v10i7.16060. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/16060. Acesso em: 25 nov. 2024.

Número

Sección

Ciencias de la salud