ArticleBritish journal of pharmacology2021
Endothelin-1 potentiates TRPV1-mediated vasoconstriction of human adipose arterioles in a protein kinase C-dependent manner.
Article in British journal of pharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- HIF1A regulates follicular atresia through O-GlcNAcylation-mediated VEZF1/ET-1/FOXO1/BAX signaling in porcine granulosa cells.Journal of animal science and biotechnology · 2025Article
- The Endocannabinoid Peptide RVD-Hemopressin Is a TRPV1 Channel Blocker.Biomolecules · 2024Article
- Potential actions of capsaicin for preventing vascular calcification of vascular smooth muscle cellsHeliyon · 2024Article
- Review
- Reactive Oxygen Species Are Essential for Vasoconstriction upon Cold Exposure.Oxidative medicine and cellular longevity · 2021Article
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Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
Abstract
background and purposeThe TRPV cation channels have emerged as important regulators of vascular tone. TRPV1 channels and endothelin-1 are independently associated with the pathophysiology of coronary vasospasm, but the relationship between their vasomotor functions remains unclear. We characterized the vasomotor function of TRPV1 channels in human arterioles and investigated regulation of their vasomotor function by endothelin-1. EXPERIMENTAL APPROACH: Human arterioles (mainly from adipose tissue) were threaded on two metal wires, equilibrated in a physiological buffer at 37°C and exposed to increasing concentrations of capsaicin, with or without SB366791 (TRPV1-selective inhibitor) or GF109203X (PKC-selective inhibitor). Some arterioles were pre-constricted with endothelin-1 or phenylephrine or high potassium buffer. TRPV1 mRNA and protein expression in human arteries were also assessed. KEY
resultsTRPV1 transcripts and proteins were detected in human resistance arteries. Capsaicin (1 μM) induced concentration-dependent constriction of endothelium-intact and endothelium-denuded human adipose arterioles (HAA), which was significantly inhibited by SB366791. Pre-constriction of HAA with endothelin-1, but not high potassium buffer or phenylephrine, significantly potentiated capsaicin (0.1 μM)-induced constriction. GF109203X significantly inhibited potentiation of capsaicin-induced constriction by endothelin-1. CONCLUSION AND IMPLICATIONS: TRPV1 channels are expressed in the human vasculature and affect vascular tone of human arterioles on activation. Their vasomotor function is modulated by endothelin-1, mediated in part by PKC. These findings reveal a novel interplay between endothelin-1 signalling and TRPV1 channels in human VSMC, adding to our understanding of the ion channel mechanisms that regulate human arteriolar tone and may also contribute to the pathophysiology of coronary vasospasm.
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