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Connexin 40-Mediated Regulation of Systemic Circulation and Arterial Blood Pressure. 2023

Mónica Márquez, and Matías Muñoz, and Alexandra Córdova, and Mariela Puebla, and Xavier F Figueroa
Departamento de Fisiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.

Vascular system is a complex network in which different cell types and vascular segments must work in concert to regulate blood flow distribution and arterial blood pressure. Although paracrine/autocrine signaling is involved in the regulation of vasomotor tone, direct intercellular communication via gap junctions plays a central role in the control and coordination of vascular function in the microvascular network. Gap junctions are made up by connexin (Cx) proteins, and among the four Cxs expressed in the cardiovascular system (Cx37, Cx40, Cx43, and Cx45), Cx40 has emerged as a critical signaling pathway in the vessel wall. This Cx is predominantly found in the endothelium, but it is involved in the development of the cardiovascular system and in the coordination of endothelial and smooth muscle cell function along the length of the vessels. In addition, Cx40 participates in the control of vasomotor tone through the transmission of electrical signals from the endothelium to the underlying smooth muscle and in the regulation of arterial blood pressure by renin-angiotensin system in afferent arterioles. In this review, we discuss the participation of Cx40-formed channels in the development of cardiovascular system, control and coordination of vascular function, and regulation of arterial blood pressure.

UI MeSH Term Description Entries
D002319 Cardiovascular System The HEART and the BLOOD VESSELS by which BLOOD is pumped and circulated through the body. Circulatory System,Cardiovascular Systems,Circulatory Systems
D004730 Endothelium, Vascular Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components. Capillary Endothelium,Vascular Endothelium,Capillary Endotheliums,Endothelium, Capillary,Endotheliums, Capillary,Endotheliums, Vascular,Vascular Endotheliums
D000097003 Gap Junction alpha-5 Protein A GAP JUNCTION alpha subunit containing four transmembrane domains expressed in the atrial myocardium and ventricular HEART CONDUCTION SYSTEM including PURKINJE FIBERS. Mutations in the human gene GJA5 are associated with cardiac conduction abnormalities such as a familial ATRIAL FIBRILLATION. Connexin 40,Connexin 40 Protein,GJA5 Protein,Gap Junction A5,Gap Junction alpha5 Protein,Gap Junction alpha 5 Protein,Protein, Connexin 40,Protein, GJA5
D017629 Gap Junctions Connections between cells which allow passage of small molecules and electric current. Gap junctions were first described anatomically as regions of close apposition between cells with a narrow (1-2 nm) gap between cell membranes. The variety in the properties of gap junctions is reflected in the number of CONNEXINS, the family of proteins which form the junctions. Gap Junction,Junction, Gap,Junctions, Gap
D017630 Connexins A group of homologous proteins which form the intermembrane channels of GAP JUNCTIONS. The connexins are the products of an identified gene family which has both highly conserved and highly divergent regions. The variety contributes to the wide range of functional properties of gap junctions. Connexin,Connexin Complex Proteins,Gap Junction Proteins,Gap Junction Channel Proteins,Gap Junction Protein,Junction Protein, Gap,Junction Proteins, Gap
D062186 Arterial Pressure The blood pressure in the ARTERIES. It is commonly measured with a SPHYGMOMANOMETER on the upper arm which represents the arterial pressure in the BRACHIAL ARTERY. Aortic Blood Pressure,Aortic Pressure,Aortic Pulse Pressure,Aortic Tension,Arterial Blood Pressure,Arterial Tension,Blood Pressure, Aortic,Blood Pressure, Arterial,Mean Aortic Pressure,Mean Arterial Pressure,Aortic Blood Pressures,Aortic Pressure, Mean,Aortic Pressures,Aortic Pressures, Mean,Aortic Pulse Pressures,Aortic Tensions,Arterial Blood Pressures,Arterial Pressure, Mean,Arterial Pressures,Arterial Pressures, Mean,Arterial Tensions,Blood Pressures, Aortic,Blood Pressures, Arterial,Mean Aortic Pressures,Mean Arterial Pressures,Pressure, Aortic,Pressure, Aortic Blood,Pressure, Aortic Pulse,Pressure, Arterial,Pressure, Arterial Blood,Pressure, Mean Aortic,Pressure, Mean Arterial,Pressures, Aortic,Pressures, Aortic Blood,Pressures, Aortic Pulse,Pressures, Arterial,Pressures, Arterial Blood,Pressures, Mean Aortic,Pressures, Mean Arterial,Pulse Pressure, Aortic,Pulse Pressures, Aortic,Tension, Aortic,Tension, Arterial,Tensions, Aortic,Tensions, Arterial

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