Journal
COMPREHENSIVE PHYSIOLOGY
Volume 9, Issue 3, Pages 1249-1277Publisher
WILEY
DOI: 10.1002/cphy.c180034
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Funding
- National Heart, Lung, and Blood Institute [R01HL091905, R01HL137852, R01HL139585]
- National Institute of Neurological Disorders and Stroke [RF1110044]
- National Institute of General Medicine [P20GM130459]
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The vascular endothelium is a broadly distributed and highly specialized organ. The endothelium has a number of functions including the control of blood vessels diameter through the production and release of potent vasoactive substances or direct electrical communication with underlying smooth muscle cells, regulates the permeability of the vascular barrier, stimulates the formation of new blood vessels, and influences inflammatory and thrombotic processes. Endothelial cells that make up the endothelium express a variety of cell-surface receptors and ion channels on the plasma membrane that are capable of detecting circulating hormones, neurotransmitters, oxygen tension, and shear stress across the vascular wall. Changes in these stimuli activate signaling cascades that initiate an appropriate physiological response. Increases in the global intracellular Ca2+ concentration and localized Ca2+ signals that occur within specialized subcellular microdomains are fundamentally important components of many signaling pathways in the endothelium. The transient receptor potential (TRP) channels are a superfamily of cation-permeable ion channels that act as a primary means of increasing cytosolic Ca2+ in endothelial cells. Consequently, TRP channels are vitally important for the major functions of the endothelium. In this review, we provide an in-depth discussion of Ca2+-permeable TRP channels in the endothelium and their role in vascular regulation. (c) 2019 American Physiological Society.
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