1
|
Alamgeer, Asif H, Chohan TA, Irfan HM, Asim MH, Bukhari SNA, Younis W, Althobaiti YS, Ullah A, Khan AQ, Hakami AY. Ex vivo, in vitro, and in silico approaches to unveil the mechanisms underlying vasorelaxation effect of Mentha Longifolia (L.) in porcine coronary artery. Biomed Pharmacother 2022; 153:113298. [PMID: 35759866 DOI: 10.1016/j.biopha.2022.113298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE Mentha (M.) longifolia (L.) is traditionally used for various ailments. The current study was intended to explore the underlying vasorelaxation mechanisms of M. longifolia. MATERIAL AND METHODS Aqueous-methanol extract from the aerial parts of M. longifolia was prepared and subjected to activity-guided fractionation. The vasorelaxant activity was performed using porcine coronary arteries with intact and denuded endothelium. In-vitro PDE inhibitory activity of the active fraction was carried out using the radio-enzymatic assay. The active fraction was also subjected to GCMS. Docking and molecular dynamic simulation studies were also performed RESULT: We had observed that aqueous-methanolic extract induced relaxation in the coronary artery in a dose-dependent manner when the endothelium was intact and denuded. n-butanol fraction (MLB) has produced a maximum effect, and it was selected for mechanistic studies. MLB has significantly enhanced the relaxation produced by cAMP and cGMP, elevating atrial natriuretic peptide, sodium nitroprusside, isoproterenol, and forskolin. The pre-treatment with MLB inhibited the contractile response produced by KCl, U46619, and CaCl2 in without endothelium rings. MLB has non-selectively inhibited the PDE isoforms. GCMS analysis of MLB has revealed the presence of menthol, thymol, and carvacrol in the active fraction. Docking and molecular dynamic simulation studies have indicated that thymol can be a competitive inhibitor for PDE1. CONCLUSION It is postulated that an n-butanol fraction of Mentha longifolia produced endothelium-independent relaxation due to increased levels of cAMP and cGMP caused by the inhibition of various PDEs.
Collapse
Affiliation(s)
- Alamgeer
- Punjab University College of Pharmacy, University of the Punjab, Lahore, Pakistan; College of Pharmacy University of Sargodha, Sargodha, Pakistan.
| | - Hira Asif
- Lahore Pharmacy College, Lahore Medical and Dental College, Lahore, 54850 Lahore, Pakistan
| | - Tahir Ali Chohan
- Institute of Pharmaceutical Sciences, the University of Veterinary and Animal Sciences, Lahore, Pakistan
| | | | | | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka, Al Jouf 72388, Saudi Arabia
| | - Waqas Younis
- Faculty of Pharmacy, the University of Lahore, Pakistan
| | - Yusuf S Althobaiti
- Department of Pharmacology and Toxicology, College of Pharmacy, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia; Addiction and Neuroscience Research Unit, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.
| | - Aman Ullah
- College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad 44000, Pakistan
| | - Abdul Qayyum Khan
- School of Pharmacy, University of Management and Technology Lahore, Pakistan
| | - Alqassem Y Hakami
- College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia; King Abdullah International Medical Research Center, Jeddah, Saudi Arabia
| |
Collapse
|