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Beta-adrenergic receptor stimulation, histamine receptor inhibition, and potassium channel opening contribute to the relaxant effects of crocetin on airway smooth muscle.
Behrouz, Sepideh; Memarzia, Arghavan; Eshaghi Ghalibaf, Mohammad Hossein; Boskabady, Mohammad Hossein.
Afiliación
  • Behrouz S; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
  • Memarzia A; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
  • Eshaghi Ghalibaf MH; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
  • Boskabady MH; Department of Physiology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Iran J Basic Med Sci ; 27(10): 1317-1322, 2024.
Article en En | MEDLINE | ID: mdl-39229577
ABSTRACT

Objectives:

In the present study, the relaxant effect of crocetin on tracheal smooth muscle cells (TSM) and its possible mechanisms were evaluated. Materials and

Methods:

The study was conducted on 54 male Wistar rats in 8 groups. TSM was contracted by methacholine (10 µM) and KCl (60 mM), and the relaxant effects of four cumulative concentrations of crocetin, petal extract of saffron, and theophylline were examined on non-incubated and TSM incubated with propranolol, chlorpheniramine, diltiazem, atropine, glibenclamide, and indomethacin were investigated.

Results:

In non-incubated TSM contracted by methacholine or KCl, crocetin and theophylline showed concentration-dependent relaxant effects (all, P<0.001). However, various concentrations of crocetin showed significantly lower relaxant effects compared to those of theophylline (all, P<0.001). In the methacholine-induced contraction of TSM, the relaxation effect of the last concentration of crocetin in the TSM incubated with propranolol was lower than in non-incubated TSM (P<0.05). In the incubated TSM with chlorpheniramine, the relaxant effects of the two last concentrations of crocetin were significantly lower than in the non-incubated tissues contracted by KCl (P<0.05 and P<0.0). The levels of EC50 crocetin in the incubated TSM with glibenclamide, chlorpheniramine, and indomethacin were markedly lower than in non-incubated (all, P<0.05).

Conclusion:

The results showed potent relaxation effects of crocetin on TSM and were suggested to be through stimulation of ß-adrenergic receptors, inhibition of histamine (H1) receptors, and potassium channel opening mechanisms.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Iran J Basic Med Sci Año: 2024 Tipo del documento: Article País de afiliación: Irán Pais de publicación: Irán
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Iran J Basic Med Sci Año: 2024 Tipo del documento: Article País de afiliación: Irán Pais de publicación: Irán