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Alterations Of Excitation Contraction Coupling In The Failing Human Heart
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Book Synopsis Alterations of Excitation-Contraction Coupling in the Failing Human Heart by : Gerd Hasenfuss
Download or read book Alterations of Excitation-Contraction Coupling in the Failing Human Heart written by Gerd Hasenfuss and published by . This book was released on 1998-01-29 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alterations of Excitation-Contraction Coupling in the Failing Human Heart by : Gerd Hasenfuss
Download or read book Alterations of Excitation-Contraction Coupling in the Failing Human Heart written by Gerd Hasenfuss and published by Springer Science & Business Media. This book was released on 1998-01-29 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alteration of excitation-contraction coupling in the failing human heart was deemed an interesting subject for a dialogue between basic scientists and clinical researchers in continuation of previous Gargellen Conferences concerned with the function of the normal and failing human myocardium. In 1987 basic mechanisms and clinical implications of then new insights into cardiac energetics was followed by a comprehensive review of inotropic stimulation and myocardial energetics in 1989. Here, we undertook a re-evaluation of the principles of inotropic stimulation and of its potential therapeutic value, based on new observa tions from experiments with human myocardium. In 1992 the risk due to myocardial phenotype change as a consequence of adaptation in heart failure was published. Here, alterations of subcellular structures and functions as a consequence of chronic heart failure, summarized as phenotype change, could be described as an essential characteristic of the failing human myocardium. This topic was discussed in greater depth in the volume "Cellular and Molecular Alterations in the Failing Human Heart", considering both the sarcolemma and the phosphodiesterases, as well as excitation-contraction coupling and contractile proteins, extracellular matrix, and mitrochondrial function.
Book Synopsis Understanding the New Ischemic Syndromes by : Gerd Hasenfuss
Download or read book Understanding the New Ischemic Syndromes written by Gerd Hasenfuss and published by . This book was released on 1997 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alterations of Excitation-Contraction Coupling in the Failing Human Heart by : Gerd Hasenfuss
Download or read book Alterations of Excitation-Contraction Coupling in the Failing Human Heart written by Gerd Hasenfuss and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alteration of excitation-contraction coupling in the failing human heart was deemed an interesting subject for a dialogue between basic scientists and clinical researchers in continuation of previous Gargellen Conferences concerned with the function of the normal and failing human myocardium. In 1987 basic mechanisms and clinical implications of then new insights into cardiac energetics was followed by a comprehensive review of inotropic stimulation and myocardial energetics in 1989. Here, we undertook a re-evaluation of the principles of inotropic stimulation and of its potential therapeutic value, based on new observa tions from experiments with human myocardium. In 1992 the risk due to myocardial phenotype change as a consequence of adaptation in heart failure was published. Here, alterations of subcellular structures and functions as a consequence of chronic heart failure, summarized as phenotype change, could be described as an essential characteristic of the failing human myocardium. This topic was discussed in greater depth in the volume "Cellular and Molecular Alterations in the Failing Human Heart", considering both the sarcolemma and the phosphodiesterases, as well as excitation-contraction coupling and contractile proteins, extracellular matrix, and mitrochondrial function.
Book Synopsis Alteration of Excitation Contraction Coupling in the Failing Human Hurt by : Gerd Hasenfuss
Download or read book Alteration of Excitation Contraction Coupling in the Failing Human Hurt written by Gerd Hasenfuss and published by . This book was released on 1997 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cellular and Molecular Alterations in the Failing Human Heart by : Hansjörg Just
Download or read book Cellular and Molecular Alterations in the Failing Human Heart written by Hansjörg Just and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: The myocardium in heart failure: Cellular and subcellular alterations in the failing human myocardium. H. Just Medizinische Universitatsklinik Freiburg i. Br., Innere Medizin III - Kardiologie, FRG The syndrome of heart failure continues to be a major challenge to clinicians and scientists. Incidence and mortality of the disease are high, the patient is disabled, and is permanently threatened by the high morbidity and mortality. The clinician faces a syndrome of complex pathophysiology. Multiple causes or underlying disorders of the heart have to be differentiated from heart failure itself, which often results in exceedingly difficult diagnoses. Likewise, prognostication meets with difficulties due to problems in separating influences of the underlying disease and the heart failure syndrome itself. In chronic refractory failure annual mortality may exceed 50%. If aortic stenosis or ischemic cardiomyopathy with main stem lesions are present, this percentage may be even higher. The situation becomes particularly threatening to the patient when the reduction in cardiac performance goes along with complex ventricular arrhythmias. Therapy has remained difficult and of limited effectiveness. Major progress was achieved with the introduction of diuretic substances. Of similar importance was the introduction of va so dilating drugs into the treatment of heart failure. The principle of vasodilation has greatly improved our understanding of the disease, and has brought about a major improvement of symptoms, increase of exercise capacity, and reduc tion of mortality. This is especially true for the introduction of the angiotensin converting enzyme inhibitors.
Book Synopsis Molecular Approaches to Heart Failure Therapy by : G. Hasenfuss
Download or read book Molecular Approaches to Heart Failure Therapy written by G. Hasenfuss and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: G. HASENFUSS, E. MARBAN Heart failure embodies the central irony of modern medicine. As we have become increasingly adept at treating the major proximate causes of death in Western society, we have effectively converted acute illness into chronic malady. The last twenty years have witnessed a revolution in the treatment of acute coronary syndromes, myocardial infarction in particular. Patients who reach the hospital now have every expectation of leaving alive, but not necessarily well. Our ability to blunt the edge of ischemic insults has en gendered new problems: a new cohort of patients whose hearts function well enough to enable short-term survival, but at the cost of decreased ex ercise tolerance, dyspnea and increased long-term mortality. The irony is compounded by our increasingly sophisticated pharmacopeia for the treat ment of heart failure, which, by slowing the progression of ventricular dys function, has created a chronic illness. The fact of its chronicity makes heart failure no less deadly. In symptomatic patients, mortality exceeds 5-10% per year even with the best contemporary therapy. Not all heart failure is ischemic, of course, but the final common phenotype is eerily concordant regardless of the proximate cause. No wonder, then, that heart failure is the leading cause of hospitalization in America and in Western Europe and that the prevalence of the disease continues to rise. Drugs have indeed revolutionized heart failure therapy, ACE inhibitors and beta-adrenergic blockers having the most outstanding records to date.
Book Synopsis Excitation-Contraction Coupling and Cardiac Contractile Force by : Donald Bers
Download or read book Excitation-Contraction Coupling and Cardiac Contractile Force written by Donald Bers and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: How is the heartbeat generated? What controls the strength of contraction of heart muscle? What are the links between cardiac structure and function? How does our understanding of skeletal and smooth muscle and non-muscle cells influence our thinking about force development in the heart? Are there important species differences in how contraction is regulated in the heart? How do the new molecular data fit together in understanding the heart beat? What goes wrong in ischemia, hypertrophy, and heart failure? This book paints a modern `portrait' of how the heart works and in this picture the author shows a close-up of the structural, biochemical, and physiological links between excitation and contraction. The author takes the reader through a series of important, interrelated topics with great clarity and continuity and also includes many useful illustrations and tables. The book starts by considering the cellular structures involved in excitation-contraction coupling and then described the characteristics of the myofilaments as the end effector of excitation-contraction coupling. A general scheme of calcium regulation is described and the possible sources and sinks of calcium are discussed in simple, but quantitative terms. The cardiac action potential and its many underlying currents are reviewed. Then the characteristics of some key calcium transport systems (calcium channels, sodium/calcium exchange and SR calcium uptake and release) are discussed in detail. This is then built into a more integrated picture of calcium regulation in succeeding chapters by detailed discussions of excitation-calcium coupling mechanisms (in skeletal, cardiac, and smooth muscle), the interplay between calcium regulatory processes, and finally mechanisms of cardiac inotropy, calcium overload, and dysfunction (e.g., ischemia, hypertrophy, and heart failure). Excitation-Contraction Coupling and Cardiac Contractile Force – Second Edition is an invaluable source of information for anyone who is interested in how the heart beat is controlled and especially suited for students of the cardiovascular system at all levels from medical/graduate students through senior investigators in related fields.
Book Synopsis Nanodomain Regulation of Muscle Physiology and Alterations in Disease by : Niall Macquaide
Download or read book Nanodomain Regulation of Muscle Physiology and Alterations in Disease written by Niall Macquaide and published by Frontiers Media SA. This book was released on 2023-01-03 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cardiac Electrophysiology: From Cell to Bedside E-Book by : Douglas P. Zipes
Download or read book Cardiac Electrophysiology: From Cell to Bedside E-Book written by Douglas P. Zipes and published by Elsevier Health Sciences. This book was released on 2017-05-13 with total page 1429 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rapid advancements in cardiac electrophysiology require today’s health care scientists and practitioners to stay up to date with new information both at the bench and at the bedside. The fully revised 7th Edition of Cardiac Electrophysiology: From Cell to Bedside, by Drs. Douglas Zipes, Jose Jalife, and William Stevenson, provides the comprehensive, multidisciplinary coverage you need, including the underlying basic science and the latest clinical advances in the field. An attractive full-color design features color photos, tables, flow charts, ECGs, and more. All chapters have been significantly revised and updated by global leaders in the field, including 19 new chapters covering both basic and clinical topics. New topics include advances in basic science as well as recent clinical technology, such as leadless pacemakers; catheter ablation as a new class I recommendation for atrial fibrillation after failed medical therapy; current cardiac drugs and techniques; and a new video library covering topics that range from basic mapping (for the researcher) to clinical use (implantations). Each chapter is packed with the latest information necessary for optimal basic research as well as patient care, and additional figures, tables, and videos are readily available online. New editor William G. Stevenson, highly regarded in the EP community, brings a fresh perspective to this award-winning text. Expert Consult eBook version included with purchase. This enhanced eBook experience allows you to search all of the text, figures, images, videos (including video updates), glossary, and references from the book on a variety of devices.
Book Synopsis Molecular Mechanisms of Cardiac Hypertrophy and Failure by : Richard A. Walsh
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.
Book Synopsis Analytical and Quantitative Cardiology by : S. Sideman
Download or read book Analytical and Quantitative Cardiology written by S. Sideman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tenth Henry Goldberg Workshop is an excellent occasion to recall our goals and celebrate some of our humble achievements. Vision and love of our fellow man are combined here to: 1) Foster interdisciplinary interaction between leading world scientists and clinical cardiologists so as to identify missing knowledge and catalyze new research ideas; 2) relate basic microscale, molecular and subcellular phenomena to the global clinically manifested cardiac performance; 3) apply conceptual modelling and quantitative analysis to better explore, describe, and understand cardiac physiology; 4) interpret available clinical data and design new revealing experiments; and 5) enhance international cooperation in the endless search for the secrets of life and their implication on cardiac pathophysiology. The first Goldberg Workshop, held in Haifa, in 1984, explored the interaction of mechanics, electrical activation, perfusion and metabolism, emphasizing imaging in the clinical environment. The second Workshop, in 1985, discussed the same parameters with a slant towards the control aspects. The third Goldberg Workshop, held in the USA at Rutgers University, in 1986, highlighted the transformation of the microscale activation phenomena to macro scale activity and performance, relating electrophysiology, energy metabolism and cardiac mechanics. The fourth Goldberg Workshop continued the effort to elucidate the various parameters affecting cardiac performance, with emphasis on the ischemic heart. The fifth Workshop concentrated on the effect of the inhomogeneity of the cardiac muscle on its performance. The sixth Workshop highlighted new imaging techniques which allow insight into the local and global cardiac performance.
Book Synopsis Cardiovascular Signaling in Health and Disease by : Narasimham L. Parinandi
Download or read book Cardiovascular Signaling in Health and Disease written by Narasimham L. Parinandi and published by Springer Nature. This book was released on 2022-09-21 with total page 535 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume focuses on cardiovascular diseases (CVDs), and explores the ways in which signaling mechanisms at the biochemical, molecular, and cellular levels in the blood vessels (vascular) and heart contribute to the underlying causes of development and progression of the CVDs. This volume covers unique topics such as oxidant signaling in vascular and heart diseases and health, cytoskeletal signaling in vascular health and disease, phospholipase signaling in CVDs, lipid signaling in vascular and myocardial health and diseases, and drug discovery in cellular signaling for cardiovascular diseases. This book assembles the most important discoveries made by leaders on the cellular signaling mechanisms operating behind the development and progression of life-threatening CVDs. It is an extremely useful resource for the investigators in the field of CVDs, and opens the discussion for further discovery of efficient management and effective treatment of the CVDs.
Book Synopsis Heart Hypertrophy and Failure by : Naranjan S. Dhalla
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 Pathobiology of Human Disease written by and published by Elsevier. This book was released on 2014-08-01 with total page 4376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pathobiology of Human Disease bridges traditional morphologic and clinical pathology, molecular pathology, and the underlying basic science fields of cell biology, genetics, and molecular biology, which have opened up a new era of research in pathology and underlie the molecular basis of human disease. The work spans more than 48 different biological and medical fields, in five basic sections: Human Organ Systems Molecular Pathology/Basic Mechanisms of Diseases Animal Models/Other Model Systems Experimental Pathology Clinical Pathology Each article provides a comprehensive overview of the selected topic to inform a broad spectrum of readers from research professionals to advanced undergraduate students. Reviews quantitative advances in the imaging and molecular analysis of human tissue, new microarray technologies for analysis of genetic and chromosomal alterations in normal and diseased cells and tissues, and new transgenic models of human disease using conditional, tissue-specific gene targeting Articles link through to relevant virtual microscopy slides, illustrating side-by-side presentation of "Normal" and "Disease" anatomy and histology images Fully-annotated with many supplementary full color images, graphs, tables, and video files linked to data sets and to live references, enabling researchers to delve deeper and visualize solutions
Book Synopsis The Role of Calcium Handling in Heart Failure and Heart Failure Associated Arrhythmias by : Elisabetta Cerbai
Download or read book The Role of Calcium Handling in Heart Failure and Heart Failure Associated Arrhythmias written by Elisabetta Cerbai and published by Frontiers Media SA. This book was released on 2019-05-15 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under normal, healthy conditions, the contraction of cardiac myocytes, leading to the pump function of this organ, is driven by calcium-dependent mechanisms. Entry of calcium into the myocyte during the cardiac action potential causes activation of the ryanodine receptors and release of calcium from the sarcoplasmic reticulum. This process termed calcium-induced calcium release is essential for excitation-contraction coupling and enables each action potential to be transduced into a mechanical event. Indeed, in healthy myocytes, the calcium concentration in the cytosol of is elevated approximately 10-fold from a resting level of ∼100 nM to ∼1 μM. This process is finely orchestrated by a number of key proteins, which can be specifically regulated by various pathways depending on the oxygen demand. Furthermore, the specific structure of the myocyte allows certain calcium-dependent processes to be compartmentalised, increasing the efficiency and safety of this regulation. Heart failure is a common, costly, and life-threatening condition. In 2015, for example, it affected around 40 million people globally. In patients with heart failure, the risk of sudden cardiac death and arrhythmias increases substantially. Cellular remodelling and alterations in calcium handling, which appear to contribute to the arrhythmogenic burden in heart failure, have been extensively reported. However, a number of unanswered questions remain, and each new study - while continuing to shed light on this subject - raises additional novel questions. This current compendium of articles covers a number of aspects and comprehensively reviews current knowledge and perspectives regarding the link between calcium handling, arrhythmias and heart failure providing at the same time insights that may lead to novel therapeutic options for the future.
Book Synopsis The Hypertrophied Heart by : Nobuakira Takeda
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.