Role Of The Sarcoplasmic Reticulum In Smooth Muscle
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Role Of The Sarcoplasmic Reticulum In Smooth Muscle
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Author : Derek J. Chadwick
language : en
Publisher: John Wiley & Sons
Release Date : 2003-07-07
Role Of The Sarcoplasmic Reticulum In Smooth Muscle written by Derek J. Chadwick and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-07-07 with Science categories.
Smooth muscle contraction is a vital component of the functioning of blood vessels, the uterus, airways and the bladder. Its malfunction can lead to serious pathological conditions, such as hypertension and pre-term labour. The calcium ion plays a central role in smooth muscle function, increasing in concentration for contraction and decreasing for relaxation. Calcium entry into the cell is facilitated by the sarcoplasmic reticulum (SR). This book explores the latest research on the role of the sarcoplasmic reticulum (SR) in smooth muscle function. It examines the control and modulation of the SR and how this may vary among smooth muscle types. Potential therapeutic implications are also discussed. Discusses new and exciting work in this area and identifies promising new research directions. Considers the advances in this relatively unexplored field, offering new insights into the role of the SR muscle. Brings together contributions from key workers, both in basic and clinical science, whose studies range from physiological to pathological and molecular to whole animal.
Mechanisms Of Vascular Disease
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Author : Robert Fitridge
language : en
Publisher: University of Adelaide Press
Release Date : 2011
Mechanisms Of Vascular Disease written by Robert Fitridge and has been published by University of Adelaide Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Medical categories.
New updated edition first published with Cambridge University Press. This new edition includes 29 chapters on topics as diverse as pathophysiology of atherosclerosis, vascular haemodynamics, haemostasis, thrombophilia and post-amputation pain syndromes.
Cellular Aspects Of Smooth Muscle Function
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Author : C. Y. Kao
language : en
Publisher: Cambridge University Press
Release Date : 1997-08-28
Cellular Aspects Of Smooth Muscle Function written by C. Y. Kao and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-08-28 with Science categories.
Smooth muscles line many internal organs and, in general, are involved in moving fluids and slurry around the body. They are controlled by the action of hormones, by nervous stimulation, and can be influenced by drugs. This 1997 book provides a review of our understanding of smooth muscle and integrates molecular, cellular and physiological information with tissue and anatomical studies. Well-known researchers have written chapters giving detailed reviews of our current knowledge of the biochemistry, pharmacology, physiology and anatomy of smooth muscle. In particular, they cover the seven most important areas of smooth muscle function including morphology, electrophysiology, mechanisms of electromechanical and pharmacomechanical coupling, calcium homeostasis, signal transduction, mechanics of contraction, and the contractile proteins. All those interested in muscular contraction will find this book worthwhile, whether they are biochemists, physiologists, or cell biologists.
Excitation Contraction Coupling In Skeletal Cardiac And Smooth Muscle
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Author : George B. Frank
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Excitation Contraction Coupling In Skeletal Cardiac And Smooth Muscle written by George B. Frank and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
The Third International Symposium on Excitation-Contraction Coupling in Skeletal, Cardiac, and Smooth Muscle, organized by George Frank, C. Paul Bianchi, and Henk E. DJ. ter Keurs, was held in Banff Centre, Banff, Alberta, Canada during June 26 to June 30, 1991. The theme of these symposia has been to recognize the similarities and dissimilarities of excitation-contraction coupling in skeletal, cardiac, and smooth muscle. Cross fertilization of concepts of excitation-contraction coupling in these three types of muscle has occurred since the early studies in the late fifties and early sixties on skeletal muscle. Investigators in each field meet only at specialized symposia which exclude investigators in the other fields. The purpose of the symposia has been to bring together international investigators studying excitation-contraction coupling in skeletal, cardiac, and smooth muscle so that we may learn from each other and hence provide a more global concept of excitation-contraction. The Third International Symposia has accomplished its objective as we recognize that calcium channels of the sarcolemma and the sarcoplasmic reticulum play key essential roles in excitation-contraction coupling in all three types of muscles. In skeletal muscle the recognition that E-C coupling consists of two parallel mechanisms, one dependent upon a dihydropyridine voltage-sensitive sensors coupled to calcium release from the terminal cisternae via the ryanodine sensitive channel in the foot structure of the triad.
Sarcoplasmic Reticulum
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Author : Rigers Bakiu
language : en
Publisher:
Release Date : 2015
Sarcoplasmic Reticulum written by Rigers Bakiu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with SCIENCE categories.
Muscle cells, including cardiomyocytes, contain a specialized smooth endoplasmic reticulum (ER), sarcoplasmic reticulum (SR) calcium ions (Ca2+) release and reuptake by the sarcoplasmic reticulum trigger the contraction and relaxation of the myofibrils, respectively. This book examines the control and modulation of the SR and how this may vary among skeletal and cardiac muscle without bypassing the smooth muscle. It presents new and exciting work in this area and identifies promising new research directions. Furthermore, it considers the advances in this relatively unexplored field, offering new insights into the role of SR communication with other organelles and the new concepts about ER stress. Generally, this scientific book brings together contributions from key workers--both in basic and clinical sciences-- whose studies range from physiological to pathological and molecular to whole animal. In this book, the authors provide insights into the evolution of SR design and function.
Regulation Of Vascular Smooth Muscle Function
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Author : Raouf A. Khalil
language : en
Publisher: Morgan & Claypool Publishers
Release Date : 2010
Regulation Of Vascular Smooth Muscle Function written by Raouf A. Khalil and has been published by Morgan & Claypool Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Medical categories.
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.
Regulation Of Smooth Muscle Contraction
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Author : Robert S. Moreland
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Regulation Of Smooth Muscle Contraction written by Robert S. Moreland and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
Sixth Annual Graduate Hospital Research Symposium REGULATION OF SMOOTH MUSCLE PROGRESS IN SOLVING THE PUZZLE Every so often a scientific conference comes at a time when everyone has new and exciting information, when old "dogmas" do not seem to be as well established, and when speakers and participants alike are ready to challenge interpretations of old and new experimental data. This was such a conference. What turns on a smooth muscle cell? The precise answer to this question has eluded scientists for much longer than I have been involved in the field. We know that an increase in cytosolic calcium is necessary and we know that phosphorylation of the 20 kDa myosin light chain is an important step in the process. We do not know if other processes are necessary for the initiation and lor maintenance of a smooth muscle contraction nor do we know if other processes modulate the regulation of contraction. The goal of the symposium on which this volume is based was to explore the most current hypotheses for the answers to these questions. I believe that after reading the chapters included in this volume, you will agree that this goal was achieved. The importance of calcium and calmodulin dependent myosin light chain phosphoryla tion in the regulation of smooth muscle contraction was reinforced by many presentations. However, the status of myosin light chain phosphorylation as a simple calcium dependent switch came under serious suspicion.
Vascular Smooth Muscle Metabolic Ionic And Contractile Mechanisms
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Author : M.F. III Crass
language : en
Publisher: Elsevier
Release Date : 2012-12-02
Vascular Smooth Muscle Metabolic Ionic And Contractile Mechanisms written by M.F. III Crass and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Medical categories.
Vascular Smooth Muscle: Metabolic, Ionic, and Contractile Mechanisms addresses the vascular smooth muscle function by describing plasma lipoprotein structure, synthesis, and transport in relation to the concepts of altered vascular smooth muscle lipid metabolism leading to the genesis of atherosclerotic disease. This book is organized into six chapters and begins with an introduction to the complexities of energy metabolism and how metabolic events can be correlated with a simultaneous quantitative assessment of smooth muscle mechanics and the contractile machinery at the molecular level. The next two chapters offer the reader a view of smooth muscle membrane properties in terms of the distribution, transport, and metabolic control of electrolytes and specific aspects of ion conductance and electrical activity. This text also explains how smooth muscle cells regulate their contractile activity through regulation of calcium ion fluxes and the interaction, at the molecular level, of calcium ions with regulatory proteins associated with the contractile apparatus. Reference is made to the relation of possible anomalies in cellular or subcellular smooth muscle metabolic and/or ionic events to the bases of certain types of vascular disease. A chapter that examines the events leading to vascular pathology in the form of atherogenesis concludes the book. This book is intended for researchers and clinicians engaged in the study of smooth muscle and related areas.
Calcium And Contractility
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Author : A. K. Grover
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Calcium And Contractility written by A. K. Grover and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
In organizing the present volume, we had two intentions. The first was to present the best current understanding of the mechanisms of calcium mobilization during excitation contraction coupling of smooth muscle at a level suited to the needs of professionals interested in smooth muscle pharmacology and pathophysiology, while remaining appreciable by graduate and medical students. The second intention was to provide in sight into present-day controversies, as well as the latest ad vances achieved by researchers in this field. Thus, we have thor oughly discussed both the techniques and the concepts derived from their application. An attempt has also been made here to answer a number of profoundly important questions: What are the mechanisms and agents responsible for the control of contractility? What are the accompanying changes in the state of intracellular calcium ions and the mechanisms responsible for them? How does the regula tion of contractility occur directly at the level of the actomyosin activity? What role do gap junctions play in cell-to-cell coupling? What are the roles of cholinergic, adrenergic, peptidergic, and nonadrenergic noncholinergic interactions in calcium mobiliza tion in smooth muscle? What changes occur in hypertension? The impact of these recent techniques on future research is also reflected upon.
Ultrastructure Of Smooth Muscle
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Author : P. Motta
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Ultrastructure Of Smooth Muscle written by P. Motta and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Medical categories.
Recent advances in electron microscopy have opened up new dimensions and perspectives in the field of morphology, and these are presently being integrated with biochemical and physiopathological phenomena occurring in cells, tissues, and organs. Methods such as freeze-fracture, freeze-etching, scanning, and high-voltage electron microscopy have contributed immensely to this progress, as well as to the study of smooth muscle tissue and contractile cells in general. The articles composing this book have been selected and edited with the purpose of updating and reviewing the most important aspects of smooth muscle cells as revealed by the integration of these submicroscopic techniques. The chapters of this volume have been prepared by some of the most authoritative experts in the discipline. Therefore each article not only offers the reader a concise review of the specific topic, but also seeks to highlight areas that require further investigation. Much of the volume is presented in an illustrative format so as to emphasize the remarkable results obtainable by the combination of the aforementioned methods, which allow a better appreciation of smooth muscle structure and ultrastructure. This volume, like others in the series, is intended not only for researchers in the field, but also for graduate students of histology, embryology, anatomy, physiology, and pathology in both medical and veterinary colleges. My hope is that this book will prove to be a valuable academic resource to the audience of the world in this fascinating and expanding field.