ArticlePloS one2013
Role of endogenous ENaC and TRP channels in the myogenic response of rat posterior cerebral arteries.
Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.
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27 citing papers in PubMed, 51 citations in OpenAlex.
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- Death-associated protein kinase 3 regulates the myogenic reactivity of cerebral arteries.Experimental physiology · 2023Article
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- Expression of Exogenous Epithelial Sodium Channel Beta Subunit in the Mouse Middle Cerebral Artery Increases Pressure-Induced Constriction.American journal of hypertension · 2021Article
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- What Evolutionary Evidence Implies About the Identity of the Mechanoelectrical Couplers in Vascular Smooth Muscle Cells.Physiology (Bethesda, Md.) · 2021Review
- Mechanotransduction in gastrointestinal smooth muscle cells: role of mechanosensitive ion channels.American journal of physiology. Gastrointestinal and liver physiology · 2021Review
- TRPC and TRPV Channels' Role in Vascular Remodeling and Disease.International journal of molecular sciences · 2020Review
- Pressure-induced constriction of the middle cerebral artery is abolished in TrpC6 knockout mice.American journal of physiology. Heart and circulatory physiology · 2020Article
- Interleukin-17 Reduces βENaC via MAPK Signaling in Vascular Smooth Muscle Cells.International journal of molecular sciences · 2020Article
- Tumor necrosis factor-α impairs cerebral blood flow in pregnant rats: role of vascular β-epithelial NaAmerican journal of physiology. Heart and circulatory physiology · 2020Article
- It takes more than two to tango: mechanosignaling of the endothelial surface.Pflugers Archiv : European journal of physiology · 2020Review
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimsMechanogated ion channels are predicted to mediate pressure-induced myogenic vasoconstriction in small resistance arteries. Recent findings have indicated that transient receptor potential (TRP) channels and epithelial sodium channels (ENaC) are involved in mechanotransduction. The purpose of this study was to investigate the role of TRP channels and ENaC in the myogenic response. Our previous study suggested that ENaC could be a component of the mechanosensitive ion channels in rat posterior cerebral arteries (PCA). However, the specific ion channel proteins mediating myogenic constriction are unknown. Here we found, for the first time, that ENaC interacted with TRPM4 but not with TRPC6 using immunoprecipitation and confocal microscopy. METHODS AND
resultsTreatment with a specific βENaC inhibitor, amiloride, a specific TRPM4 inhibitor, 9-phenanthrol, and a TRPC6 inhibitor, SKF96365, resulted in inhibition of the pressure-induced myogenic response. Moreover, the myogenic response was inhibited in rat PCA transfected with small interfering RNA of βENaC, TRPM4, and TRPC6. Co-treatment with amiloride and 9-phenanthrol showed a similar inhibitory effect on myogenic contraction compared to single treatment with amiloride or 9-phenanthrol. The myogenic response was not affected by 9-phenanthrol or amiloride treatment in PCA transfected with βENaC or TRPM4 siRNA, respectively. However, pressure-induced myogenic response was fully inhibited by co-treatment with amiloride, 9-phenanthrol, and SKF96365, and by treatment with SKF96365 in PCA transfected with βENaC siRNA.
conclusionOur results suggest that ENaC, TRPM4, and TRPC6 play important roles in the pressure-induced myogenic response, and that ENaC and TRPM4 interact in rat PCA.
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