Vascular Ion Channels in Physiology and Disease

Vascular Ion Channels in Physiology and Disease PDF

Author: Irena Levitan, PhD

Publisher: Springer

Published: 2016-07-06

Total Pages: 431

ISBN-13: 3319296353

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Ion channels are the major class of membrane proteins responsible for rapid and regulated transport of ions across biological membranes and for the generation and propagation of electrical signals in the brain, heart, and skeletal and vascular tissues. Ion channels are also known to play critical roles in regulation of cell proliferation, insulin secretion and intracellular signaling in a variety of cell types. This book focuses on the roles of ion channels in vascular tissues under normal and pathological conditions. Vascular abnormalities are known to underlie a plethora of severe pathological conditions, such as atherosclerosis, systemic and pulmonary hypertension, coronary or cerebral vasospasm, and diabetes. In addition, misregulated angiogenesis is one of the major contributors to the development of tumors. Therefore, it is clearly imperative to obtain a better understanding of the molecular mechanisms that contribute to vascular disorders. This book will be the first comprehensive assembly of assays to present the studies that have been done during the last decade to elucidate the roles of ion channels in different vascular diseases.

Ion Channels in the Pulmonary Vasculature

Ion Channels in the Pulmonary Vasculature PDF

Author: Jason X.-J. Yuan

Publisher: CRC Press

Published: 2005-05-12

Total Pages: 832

ISBN-13: 9780824759681

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This volume presents a global overview of the role of ion flux via transmembrane ion channel proteins in the regulation of pulmonary vascular tone and in the vascular remodeling processes associated with pulmonary vascular disease-offering a comprehensive review of the multiple families of ion channels that have been identified and characterized in pulmonary artery smooth muscle, as well as a practical discussion of experimental tools for the study of ion channel physiology and molecular biology.

Ion Channels of Vascular Smooth Muscle Cells and Endothelial Cells

Ion Channels of Vascular Smooth Muscle Cells and Endothelial Cells PDF

Author: International Society for Heart Research. Meeting

Publisher:

Published: 1991

Total Pages: 402

ISBN-13:

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This authoritative new book focuses on the electrophysiology and ion channels of vascular smooth muscle and vascular endothelial cells. Presenting current information from leading researchers around the world, the book details the importance of these two cell types in the understanding of vascular pathophysiology, the treatment of disease, and the regulation and distribution of blood flow.

Ion Channels and Calcium Signaling in the Microcirculation

Ion Channels and Calcium Signaling in the Microcirculation PDF

Author:

Publisher: Academic Press

Published: 2020-05-22

Total Pages: 370

ISBN-13: 0128200901

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Ion Channels and Calcium Signaling in the Microcirculation, Volume 85, the latest release in the Current Topics in Membranes series, highlights the latest advances in the expression and function of ion channels and calcium signaling in vascular smooth muscle and endothelial cells in resistance arteries, arterioles and capillaries, critical components of microcirculation, the business end of the cardiovascular system. Leading experts have contributed chapters, including Smooth muscle ion channels and calcium signaling in the regulation of striated muscle arteriolar tone; Endothelial KIR channels as a key component of shear stress-induced mechanotransduction; Endothelial TRPV4 channels and vasodilator reactivity, and much more. Additional sections cover cerebral capillary endothelial TRPA channels and the regulation of blood flow; Endothelial mineralocorticoid receptors and the regulation of TRPV4 function in cerebral parenchymal arterioles in hypertension; Subcellular calcium signaling and myogenic tone development in the retinal microcirculation; Microvascular KIR channels: Basis, properties and regulation by lipid and hemodynamic forces, Ion channels and calcium signaling in capillary endothelial cells; Ion channels and calcium signaling in bladder arterioles and resistance arteries, and Myoendothelial feedback and endothelial IKCa and sKCa channels. Presents the latest volume in the Current Topics in Membranes series, with a novel focus on smooth muscle and endothelial cells in the peripheral microcirculation Provides authoritative contributions from an international team of leading experts actively studying the microcirculation Includes a unique focus on regional heterogeneity in ion channel expression and function in the peripheral microcirculation

Channelopathies in Heart Disease

Channelopathies in Heart Disease PDF

Author: Dierk Thomas

Publisher: Springer

Published: 2018-12-26

Total Pages: 0

ISBN-13: 9783030085483

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This book provides an expert overview on ion channel-related arrhythmia mechanisms, and describes important advances in our understanding of how ion channel dysfunction causes cardiac disease. Both, scientific findings and clinical implications are presented and discussed by scientists who have considerably contributed to the field. The book is organized in three parts: part I treats the molecular and electrophysiological mechanisms of function and dysfunction of ion channels, part II focuses on genetics and clinical findings, whereas part III describes novel research techniques, the use of stem cells and animal models and provides an outlook on future investigations and applications. The book is written for scientists in Cardiovascular Biology and Neuroscience and will be of general interest to Medical Doctors in Cardiology, Cardiac Electrophysiology and related disciplines.

Molecular Sensors for Cardiovascular Homeostasis

Molecular Sensors for Cardiovascular Homeostasis PDF

Author: D.H. Wang

Publisher: Springer Science & Business Media

Published: 2007-08-17

Total Pages: 221

ISBN-13: 0387475303

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The biomolecular basis underlying essential hypertension and end organ damage associated with hypertension is characterized as polygenic diseases with complexities such as "environment gene" and "gene-gene" interactions. Despite intensive research in this field, this molecular book is aimed at providing the state-of-the-art reviews which define how the biologic systems sense changes in environment, alter their activities or function, and cross talk with other neurohormonal systems to modulate cardiovascular/renal function and blood pressure. This title will attract scientists and investigators in both academic and industrial fields, and clinicians.

Potassium Channels in Cardiovascular Biology

Potassium Channels in Cardiovascular Biology PDF

Author: Stephen L. Archer

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 962

ISBN-13: 1461513030

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Potassium channels (K+) are membrane-spanning proteins which serve many important functions and are becoming a hot topic in physiology. K+ channels determine or modulate many functions of vascular smooth muscle, endothelial and inflammatory cells, and thus are central to regulation of arterial tone and control of cell proliferation. They are also promising targets for antihypertensive treatments with drugs which open and close specific types of K+ channels, making for an active field of research. With their ability to control vascular tone, voltage-gated K+ channels play a significant role in both pulmonary and systemic hypertension as well as in cardiac arrhythmias. This book will highlight the latest discoveries by leading researchers pertaining to the role of K+ channels in the heart and blood vessels in normal physiology and a variety of disease states.

Membrane Receptors, Channels and Transporters in Pulmonary Circulation

Membrane Receptors, Channels and Transporters in Pulmonary Circulation PDF

Author: Jason X. -J. Yuan

Publisher: Springer Science & Business Media

Published: 2010-03-10

Total Pages: 493

ISBN-13: 1607615002

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Membrane Receptors, Channels and Transporters in Pulmonary Circulation is a proceeding of the 2008 Grover Conference (Lost Valley Ranch and Conference Center, Sedalia, Colorado; September 3-7, 2008), which provided a forum for experts in the fields of those receptors, channels and transporters that have been identified as playing key roles in the physiology and pathophysiology of the pulmonary circulation. The book rigorously addresses: i) recent advances in our knowledge of receptors, channels and transporters and their role in regulation of pulmonary vascular function; ii) how modulation of expression and function of receptors, channels and transporters and their interrelationships contribute to the pathogenesis of pulmonary vascular disease; and iii) the therapeutic opportunities that may be revealed by enhancing our understanding of this area. The overall goal was to explore the mechanisms by which specific receptors, channels and transporters contribute to pulmonary vascular function in both health and disease, and how this knowledge may lead to novel interventions in lung dysplasia, pulmonary edema, lung injury, and pulmonary and systemic hypertension to reduce and prevent death from lung disease. Membrane Receptors, Channels and Transporters in Pulmonary Circulation is divided into six parts. Part 1 (Ion Channels in the Pulmonary Vasculature: Basics and New Findings) is designated for basic knowledge and recent findings in the research field of ion channels in pulmonary circulation. There are five chapters in Part I discussing the function, expression, distribution and regulation of various ion channels present in pulmonary vascular smooth muscle cells and how these channels are integrated to regulate intracellular Ca2+ and cell functions. Part II (TRP Channels in the Pulmonary Vasculature: Basics and New Findings) is composed of five chapters that are exclusively designed to discuss the role of a recently identified family of cation channels, transient receptor potential (TRP) channels, in the regulation of pulmonary vascular tone and arterial structure. Part III (Pathogenic Role of Ion Channels in Pulmonary Vascular Disease) includes four chapters that discuss how abnormal function and expression of various ion channels contribute to changes in cell functions and the development of pulmonary hypertension. Part IV (Receptors and Signaling Cascades in Pulmonary Arterial Hypertension) consists of five chapters devoted to the role of bone morphogenetic protein receptors, Notch receptors, serotonin receptors, Rho kinase and vascular endothelial growth factor receptors in the development of pulmonary arterial hypertension. Part V (Receptors and Transporters: Role in Cell Function and Hypoxic Pulmonary Vasoconstriction) includes four chapters designed to illustrate the potential mechanisms involved in oxygen sensing and hypoxia-induced pulmonary vasoconstriction and hypertension. Part VI (Targeting Ion Channels and Membrane Receptors in Developing Novel Therapeutic Approaches for Pulmonary Vascular Disease) consists five chapters which discuss the translational research involving on membrane receptors, channels and transporters, including their potential as novel drug targets. We hope that Membrane Receptors, Channels and Transporters in Pulmonary Circulation will allow readers to foster new concepts and new collaborations and cooperations among investigators so as to further understand the role of receptors, channels and transporters in lung pathophysiology. The ultimate goal is to identify new mechanisms of disease, as well as new therapeutic targets for pulmonary vascular diseases. An additional outcome should be enhanced understanding of the role of these entities in systemic vascular pathophysiology, since the conference will include researchers and clinicians with interests in both pulmonary and systemic circulations.

Ion Channels and Disease

Ion Channels and Disease PDF

Author: Frances M. Ashcroft

Publisher: Academic Press

Published: 1999-10-20

Total Pages: 505

ISBN-13: 0080535216

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Ion channels are membrane proteins that act as gated pathways for the movement of ions across cell membranes. They play essential roles in the physiology of all cells. In recent years, an ever-increasing number of human and animal diseases have been found to result from defects in ion channel function. Most of these diseases arise from mutations in the genes encoding ion channel proteins, and they are now referred to as the channelopathies. Ion Channels and Disease provides an informative and up-to-date account of our present understanding of ion channels and the molecular basis of ion channel diseases. It includes a basic introduction to the relevant aspects of molecular biology and biophysics and a brief description of the principal methods used to study channelopathies. For each channel, the relationship between its molecular structure and its functional properties is discussed and ways in which genetic mutations produce the disease phenotype are considered. This book is intended for research workers and clinicians, as well as graduates and advanced undergraduates. The text is clear and lively and assumes little knowledge, yet it takes the reader to frontiers of what is currently known about this most exciting and medically important area of physiology. Introduces the relevant aspects of molecular biology and biophysics Describes the principal methods used to study channelopathies Considers single classes of ion channels with summaries of the physiological role, subunit composition, molecular structure and chromosomal location, plus the relationship between channel structure and function Looks at those diseases associated with defective channel structures and regulation, including mutations affecting channel function and to what extent this change in channel function can account for the clinical phenotype

Regulation of Vascular Smooth Muscle Function

Regulation of Vascular Smooth Muscle Function PDF

Author: Raouf A. Khalil

Publisher: Biota Publishing

Published: 2010-05-01

Total Pages: 78

ISBN-13: 1615041818

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Vascular smooth muscle (VSM) constitutes most of the tunica media in blood vessels and plays an important role in the control of vascular tone. Ca2+ is a major regulator of VSM contraction and is strictly regulated by an intricate system of Ca2+ mobilization and Ca2+ homeostatic mechanisms. The interaction of a physiological agonist with its plasma membrane receptor stimulates the hydrolysis of membrane phospholipids and increases the generation of inositol 1,4,5-trisphosphate (IP3) and diacylglycerol (DAG). IP3 stimulates Ca2+ release from the intracellular stores in the sarcoplasmic reticulum. Agonists also stimulate Ca2+ influx from the extracellular space via voltage-gated, receptor-operated, and store-operated channels. Ca2+ homeostatic mechanisms tend to decrease the intracellular free Ca2+ concentration ([Ca2+]i) by activating Ca2+ extrusion via the plasmalemmal Ca2+ pump and the Na+/Ca2+ exchanger and the uptake of excess Ca2+ by the sarcoplasmic reticulum and possibly the mitochondria. A threshold increase in [Ca2+]i activates Ca2+-dependent myosin light chain (MLC) phosphorylation, stimulates actin–myosin interaction, and initiates VSM contraction. The agonist-induced maintained increase in DAG also activates specific protein kinase C (PKC) isoforms, which in turn cause phosphorylation of cytoplasmic substrates that increase the contractile myofilaments force sensitivity to Ca2+ and thereby enhance VSM contraction. Agonists could also activate Rho kinase (ROCK), leading to inhibition of MLC phosphatase and further enhancement of the myofilaments force sensitivity to Ca2+. The combined increases in [Ca2+]i, PKC and ROCK activity cause significant vasoconstriction and could also stimulate VSM hypertrophy and hyperplasia. The protracted and progressive activation of these processes could lead to pathological vascular remodeling and vascular disease.