The machinery of healthy vasodilatation: an overview

Author:

Pourová JanaORCID,Dias PatríciaORCID,Pour MilanORCID,Mladěnka PřemyslORCID

Abstract

Abstract Cardiovascular function depends on an adequate vascular tone facilitating appropriate blood flow to individual tissues according to their needs. The tone results from the interplay between vasodilatation and vasoconstriction. Its rapid and efficient regulation is secured by many interconnected physiological mechanisms, both at the level of the vascular smooth muscle and the endothelium. The purpose of this review is to provide an update of the current knowledge on the mechanisms of physiological vasodilatation. First, two principal intracellular signaling pathways linked to the activation of protein kinases PKA and PKG are introduced. Subsequently, the role of endothelium-derived relaxing factors together with the endothelium-dependent hyperpolarization is discussed. The roles of ion channels and gap junctions in the communication between endothelium and vascular smooth muscle cells are particularly discussed. Finally, principal vasodilatory stimuli (mechanical, thermal, chemical) and their mechanisms of action are briefly introduced.

Funder

Czech Research Health Council

Charles University, Czech Republic

Charles University

Publisher

Springer Science and Business Media LLC

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