Download or read book Role of Signal Transduction Pathways in Cardiac Hypertrophy and Heart Failure written by Christopher Lee Antos and published by . This book was released on 2003 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Signal Transduction and Cardiac Hypertrophy written by Naranjan S. Dhalla and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cellular signaling in cardiac muscle refers to the myriad of stimuli and responses that direct and control the physiological operation of this organ. Our understand ing of these complex signaling cascades has increased dramatically over the past few decades with the advent of molecular tools for their dissection. Moreover, this infor mation is beginning to provide tangible targets towards manipulating cardiac func tion in the setting of cardiovascular disease. The mechanisms and factors that regulate cardiac cell growth are of particular interest as both adaptive and maladaptive responses can occur during cardiac hypertrophy. Cardiac hypertrophy describes the increase in individual cardiac myocyte size that is accomplished through the series and/or parallel addition of sarcomeres. The ability of cardiac muscle to increase in size through hyperplasia becomes highly restricted or negligible shortly after birth. Consequently, the increase in heart size associated with development and growth of an individual occurs through hypertrophy. In response to a chronic increase in workload, cardiac muscle cells can dramatically increase in size to face their increasing contractile demands. While this plasticity is clearly a ben eficial response under many conditions, it can be highly deleterious and inappropri ate under others. For example, cardiac hypertrophy associated with endurance exercise clearly enhances athletic performance. In contrast, the hypertrophy associated with chronic hypertension, stenotic or regurgitant heart valves, or following a myocardial infarction often continues far beyond the period where this adaptive response is ben eficial.
Download or read book Signaling in the Heart written by José Marín-García and published by Springer Science & Business Media. This book was released on 2011-06-21 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signal transduction pathways are at the core of most biological processes and are critical regulators of heart physiology and pathophysiology. The heart is both a transmitter and dynamic receptor of a variety of intracellular and extracellular stimuli, playing a critical role of an integrator of diverse signaling mechanisms. Alterations in signaling pathways are contributing factors in the development and progression of a broad spectrum of diseases, ranging from dysrhythmias and atherosclerosis to hypertension and the metabolic syndrome. Targeting specific components of these signaling pathways has been shown to be effective in preclinical studies with significant therapeutic impact. This book brings together current knowledge in cardiovascular cell signal transduction mechanisms, advances in novel therapeutic approaches to improve cardiac function, and discussion of future directions. Presented from a post-genomic perspective, this exciting book introduces important new ideas in cardiovascular systems biology. It is an invaluable reference for cardiology researchers and practitioners.
Download or read book Signal Transduction in the Cardiovascular System in Health and Disease written by Ashok K. Srivastava and published by Springer Science & Business Media. This book was released on 2008-10-17 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Signal Transduction in Cardiovascular System Health and Disease highlights the major contributions of different signaling systems in modulating normal cardiovascular functions and how a perturbation in these signaling events leads to abnormal cell functions and cardiovascular disorders. This title is volume 3 in the new Springer series, Advances in Biochemistry in Health and Disease.
Download or read book The Hypertrophied Heart written by Nobuakira Takeda and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whenever the heart is challenged with an increased work load for a prolonged period, it responds by increasing its muscle mass--a phenomenon known as cardiac hypertrophy. Although cardiac hypertrophy is commonly seen under physiological conditions such as development and exercise, a wide variety of pathological situa tions such as hypertension (pressure overload), valvular defects (volume overload), myocardial infarction (muscle loss), and cardiomyopathy (muscle disease) are also known to result in cardiac hypertrophy. Various hormones such as catecholamines, thyroid hormones, angiotensin II, endothelin, and growth factors have also been shown to induce cardiac hypertrophy. Although the exact mechanisms underlying or pathological forrns of cardiac hypertrophy are poorly under the physiological stood, an increase in the intraventricular pressure is believed to represent the major stimulus for the development of cardiac hypertrophy. In this regard, stretching of the cardiac muscle has been shown to induce the hypertrophic response, but the role of metabolic influences in this process cannot be ruled out. Furthermore, different hormones and other interventions in the absence of stretch have been observed to stimulate protein synthesis in both isolated cardiomyocyte and vascular myocyte preparations. Nonetheless, it is becoming dear that receptor as well as phospholipid linked signal transduction pathways are activated in some specific manner depend ing upon the initial hypertrophic stimulus, and these then result in an increase in the size and mass of cardiomyocytes.
Download or read book Cardiac Mechanotransduction written by Matti Weckström and published by Springer Science & Business Media. This book was released on 2007-12-22 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a multidisciplinary approach to cardiac mechanotransduction. The chapters depict the many faces of the topic, from membrane and ion channel level to mechanics, biochemical signaling and regulation via hormone systems. Cardiac Mechanotransduction is of interest to basic life sciences, like physiology, biochemistry and pharmacology, but also to clinicians working with heart-related problems, such as cardiologists and internists.
Download or read book Heart Hypertrophy and Failure written by Naranjan S. Dhalla and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heart Hypertrophy and Failure brings together leading basic scientists and clinicians, presenting improved knowledge of the pathophysiology and treatment of the condition. The result is a synthesis of state-of-the-art information on molecular biology, cellular physiology and structure-function relationships in the cardiovascular system in health and disease. The papers presented describe fundamental mechanisms underlying changes in the cellular machinery during the development of cardiac hypertrophy and heart failure. Audience: Students, scientists, clinical and experimental cardiologists who seek to understand and manage the perplexing problems of hypertrophy and heart failure.
Download or read book Molecular Mechanisms of Cardiac Hypertrophy and Failure written by Richard A. Walsh and published by CRC Press. This book was released on 2005-11-29 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title reviews current knowledge of the mechanisms contributing to heart failure. Editor Richard Walsh and an internationally renowned team of contributors discuss key advances in molecular and cell biology, biochemistry, and pharmacology, focusing on advances that have a direct bearing on current clinical studies. It highlights developments across a broad range of disciplines, with in-depth coverage of each topic providing background and perspective on current literature. By setting new advances in a broader context, this text allows readers to compare different ideas and evaluate their importance in their own areas of research or clinical practice.
Download or read book Signal Transduction in Cardiac Hypertrophy and Failure written by Michael Böhm and published by . This book was released on 1996 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cardiac Hypertrophy and Failure written by Bernard Swynghedauw and published by . This book was released on 1990 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac insufficiency, a major cause of premature mortality, is a key focus of medical and pharmaceutical research. This book aims to bring clinicians and researchers up-to-date on recent biophysical, cellular physiological and molecular biological developments and their clinical applications.
Download or read book Biochemistry of Hypertrophy and Heart Failure written by Lorrie A. Kirshenbaum and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this special issue of Molecular and Cellular Biochemistry is underlying mechanisms that regulate cardiac growth. The new information provided in this special issue can be utilized to design new treatment modalities that will reduce the incidence of cardiac failure which will improve quality of life in patients with chronic heart disease.
Download or read book Stress Activated Protein Kinases written by Francesc Posas and published by Springer Science & Business Media. This book was released on 2008-01-24 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book leading researchers in the field discuss the state-of-the-art of many aspects of SAPK signaling in various systems from yeast to mammals. These include various chapters on regulatory mechanisms as well as the contribution of the SAPK signaling pathways to processes such as gene expression, metabolism, cell cycle regulation, immune responses and tumorigenesis. Written by international experts, the book will appeal to cell biologists and biochemists.
Download or read book Mechanoresponsive Mechanisms In Hypertrophic Cardiac Remodeling written by Todd Haswell Kimball and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: All cells of the body are under some form of mechanical load and these forces are part of the factors defining cell type specificity. The mechanical environment influences cellular behavior and is the basis of mechanobiology. The forces acting on cells must be met with a cellular response, as the input signals are transduced to molecular mechanisms that drive gene regulation. In the heart, the distinct roles of cardiomyocytes and fibroblasts, as fibroblasts enforce tissue stiffness homeostasis through extracellular matrix maintenance and cardiomyocyte contraction-relaxation cycles work against this stiffness with every heartbeat, enable each to respond to cardiac stressors through differential gene expression, changing their cellular physical phenotype. At the cellular level, cardiac hypertrophy is a growth of the cardiomyocyte (without proliferation) and increased interstitial fibrosis, and these phenotypes are the result of changes to gene expression. While the gene expression program induced by cardiac hypertrophy is well documented, this dissertation unravels mechanosensitive mechanisms activated by changes to the myocardial environment and cellular forces driving dysfunctional gene regulation perpetuating cardiac disease. Gene translation ends in the nucleus; however, it does not always start there. We viewed gene expression as an end point, being influenced by a number of factors outside the nucleus, including metabolism, nucleoskeletal, cytoskeletal, sarcomere organization, sarcolemmal signal transduction pathways, and the tissue environment. In examining transcriptional influence outside the nucleus, we first summarize the bidirectional effect of metabolic and gene regulation dysfunction in heart disease, as metabolic substrates and intermediates impact cardiac epigenetics and chromatin stores information. We report our findings from our pressure overload induced cardiac hypertrophy studies, demonstrating cardiomyocyte cellular remodeling influences nucleoskeletal ultrastructure through the expression of the structural and chromatin binding protein Lamin A/C. We phenotypically characterize an [alpha]1-adrenergic model of cardiac hypertrophy and investigate cell specific mechanism driving tissue remodeling and cellular mechanosensitive pathways underlying pathological stress. Through these studies, we explore the cardiac stressors that remodel the heart tissue during hypertrophy and the cellular mechanisms altering the cellular phenotype through gene regulation.
Download or read book Transcriptional Regulation of Cardiac Hypertrophy and Heart Failure written by and published by . This book was released on 2006 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac hypertrophy and dilatation are mediated by neuro-endocrine factors, internal stretch and stress sensitive signaling pathways, which in turn transduce alterations in cardiac gene expression through specific transcription factors. This dissertation will, in the first section, provide direct evidence for transcription factor myocyte enhancer factor 2 (MEF2) in the regulation of cardiac dilation and fibrosis through reprogramming cardiac gene expression; in the second section, introduce a novel secreted factor growth differentiation factor 15 (GDF15) as a cardiac anti-hypertrophic and protective factor. The MEF2 family of transcription factors have been indirectly implicated as a downstream mediator of hypertrophic signaling pathways. In this dissertation, we demonstrate directly that MEF2 induce dilated cardiomyopathy and the lengthening of myocytes without a primary induction of cardiac hypertrophy. Cardiac-specific overexpression of MEF2A or MEF2C showed spontaneous cardiomyopathy, which was not altered by activated calcineurin, or developed more fulminant disease following pressure overload. In cultured cardiomyocytes, MEF2A and MEF2C overexpression induced sarcomeric disorganization and focal elongation. Mechanistically, MEF2A and MEF2C programmed similar alteration in gene expression that included extracellular matrix remodeling, ion handling, and metabolic genes. Indeed, cultured cardiomyocytes overexpressing MEF2A, or adult myocytes from MEF2A transgenic hearts, showed reduced transient outward currents, suggesting a proximal mechanism underlying MEF2-dependent cardiomyopathy. During the analysis of gene reprogramming by MEF2, we noted dramatic induction of GDF15. GDF15 is induced by conditions that promote hypertrophy and dilation. Transgenic mice with cardiac-specific overexpression of GDF15 were normal, but were partially resistant to induced hypertrophy. GDF15 antagonized induced hypertrophy in cultured cardiomyocyte. Transient expression of GDF15 by intravenous adenoviral delivery, or by direct injection of recombinant protein, attenuated ventricular dilation and heart failure in MLP null mice through an endocrine effect. Conversely, Gdf15 null mice showed enhanced cardiac hypertrophic growth, and a pronounced loss in ventricular performance following stimulation. Mechanistically, GDF15 promoted activation of Smad2/3, which was partially responsible for the anti-hypertrophic effects. These results identify GDF15 as a novel endocrine factor that antagonizes the hypertrophic response and loss of ventricular performance.
Download or read book Cardiac Cell Biology written by Elissavet Kardami and published by Springer Science & Business Media. This book was released on 2003-02-28 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac cell biology has come of age. Recognition of activated or modified signaling molecules by specific antibodies, new selective inhibitors, and fluorescent fusion tags are but a few of the tools used to dissect signaling pathways and cross-talk mechanisms that may eventually allow rational drug design. Understanding the regulation of cardiac hypertrophy in all its complexity remains a fundamental goal of cardiac research. Since the advancement of adenovirally mediated gene transfer, transfection efficiency is no longer a limiting factor in the study of cardiomyocytes. A limiting factor in considering cell transplantion as a strategy to repair the damaged heart is cell availability at the right time. Cardiac gap junctions, intercellular communication channels that allow electrical and metabolic coupling and play an important role in arrhythmogenesis are now understood to be exquisite sensors of cardiac change. The reports in this volume incLude elegant studies that made use of cutting edge technological advances and many specialized reagents to address these issues.
Download or read book Dilated Cardiomyopathy written by Gianfranco Sinagra and published by Springer. This book was released on 2019-05-17 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents a comprehensive overview of dilated cardiomyopathy, providing readers with practical guidelines for its clinical management. The first part of the book analyzes in detail the disease’s pathophysiology, its diagnostic work up as well as the prognostic stratification, and illustrates the role of genetics and gene-environment interaction. The second part presents current and future treatment options, highlighting the importance of long-term and individualized treatments and follow-up. Furthermore, it discusses open issues, such as the apparent healing phenomenon, the early prognosis of arrhythmic events or the use of genetic testing in clinical practice. Offering a multidisciplinary approach for optimizing the clinical management of DCM, this book is an invaluable aid not only for the clinical cardiologists, but for all physicians involved in the care of this challenging disease.
Download or read book Stimulus Response Coupling written by Vana Smith and published by CRC Press. This book was released on 1990-10-24 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume examines the role of intracellular calcium in the transmission of external chemical, physical and electrical stimuli to the interior of the cell and the role of calcium in the physiological and metabolic effects of such stimuli.
