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3-methoxycatechol causes vasodilation likely via KV channels: ex vivo, in silico docking and in vivo study
P. Dias, R. Salam, M. Moravcová, S. Saadat, J. Pourová, M. Vopršalová, E. Jirkovský, JD. Tebbens, P. Mladěnka
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články
- MeSH
- aorta thoracica účinky léků metabolismus MeSH
- arteriae mesentericae * účinky léků metabolismus MeSH
- arteriální tlak účinky léků MeSH
- draslíkové kanály řízené napětím metabolismus antagonisté a inhibitory účinky léků MeSH
- guanosinmonofosfát cyklický metabolismus MeSH
- hypertenze farmakoterapie patofyziologie metabolismus MeSH
- katecholy * farmakologie chemie MeSH
- koronární cévy účinky léků metabolismus MeSH
- krysa rodu rattus MeSH
- modely nemocí na zvířatech MeSH
- myocyty hladké svaloviny účinky léků metabolismus MeSH
- potkani inbrední SHR * MeSH
- prasata MeSH
- sexuální faktory MeSH
- simulace molekulového dockingu * MeSH
- svaly hladké cévní účinky léků metabolismus MeSH
- vazodilatace * účinky léků MeSH
- vazodilatancia * farmakologie chemie MeSH
- vztah mezi dávkou a účinkem léčiva MeSH
- vztahy mezi strukturou a aktivitou MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Substituted catechols include both natural and synthetic compounds found in the environment and foods. Some of them are flavonoid metabolites formed by the gut microbiota which are absorbed afterwards. Our previous findings showed that one of these metabolites, 4-methylcatechol, exerts potent vasorelaxant effects in rats. In the current study, we aimed at testing of its 22 structural congeners in order to find the most potent structure and to investigate the mechanism of action. 3-methoxycatechol (3-MOC), 4-ethylcatechol, 3,5-dichlorocatechol, 4-tert-butylcatechol, 4,5-dichlorocatechol, 3-fluorocatechol, 3-isopropylcatechol, 3-methylcatechol and the parent 4-methylcatechol exhibited high vasodilatory activities on isolated rat aortic rings with EC50s ranging from ∼10 to 24 μM. Some significant sex-differences were found. The most potent compound, 3-MOC, relaxed also resistant mesenteric artery but not porcine coronary artery, and decreased arterial blood pressure in both male and female spontaneously hypertensive rats in vivo without affecting heart rate. It potentiated the vasodilation mediated by cAMP and cGMP, but did not impact L-type Ca2+-channels. By using two inhibitors, activation of voltage-gated potassium channels (KV) was found to be involved in the mechanism of action. This was corroborated by docking analysis of 3-MOC with the KV7.4 channel. None of the most active catechols decreased the viability of the A-10 rat embryonic thoracic aorta smooth muscle cell line. Our findings showed that various catechols can relax vascular smooth muscles and hence could provide templates for developing new antihypertensive vasodilator agents without affecting coronary circulation.
Citace poskytuje Crossref.org
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- $a Dias, Patrícia $u Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Kralove, Czech Republic; The Frick Center for Heart Failure and Arrhythmia, Dorothy M. Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University, Wexner Medical Center, Columbus, Ohio, USA; Division of Outcomes and Translational Sciences, College of Pharmacy, The Ohio State University, Columbus, Ohio, USA. Electronic address: patriciaalvdias@gmail.com
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- $a 3-methoxycatechol causes vasodilation likely via KV channels: ex vivo, in silico docking and in vivo study / $c P. Dias, R. Salam, M. Moravcová, S. Saadat, J. Pourová, M. Vopršalová, E. Jirkovský, JD. Tebbens, P. Mladěnka
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- $a Substituted catechols include both natural and synthetic compounds found in the environment and foods. Some of them are flavonoid metabolites formed by the gut microbiota which are absorbed afterwards. Our previous findings showed that one of these metabolites, 4-methylcatechol, exerts potent vasorelaxant effects in rats. In the current study, we aimed at testing of its 22 structural congeners in order to find the most potent structure and to investigate the mechanism of action. 3-methoxycatechol (3-MOC), 4-ethylcatechol, 3,5-dichlorocatechol, 4-tert-butylcatechol, 4,5-dichlorocatechol, 3-fluorocatechol, 3-isopropylcatechol, 3-methylcatechol and the parent 4-methylcatechol exhibited high vasodilatory activities on isolated rat aortic rings with EC50s ranging from ∼10 to 24 μM. Some significant sex-differences were found. The most potent compound, 3-MOC, relaxed also resistant mesenteric artery but not porcine coronary artery, and decreased arterial blood pressure in both male and female spontaneously hypertensive rats in vivo without affecting heart rate. It potentiated the vasodilation mediated by cAMP and cGMP, but did not impact L-type Ca2+-channels. By using two inhibitors, activation of voltage-gated potassium channels (KV) was found to be involved in the mechanism of action. This was corroborated by docking analysis of 3-MOC with the KV7.4 channel. None of the most active catechols decreased the viability of the A-10 rat embryonic thoracic aorta smooth muscle cell line. Our findings showed that various catechols can relax vascular smooth muscles and hence could provide templates for developing new antihypertensive vasodilator agents without affecting coronary circulation.
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- $a Salam, Rudy $u Department of Biophysics and Physical Chemistry, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Kralove, Czech Republic. Electronic address: salamr@faf.cuni.cz
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- $a Moravcová, Monika $u Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Kralove, Czech Republic. Electronic address: moravcovamo@faf.cuni.cz
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