Molecular Genetics of Cardiac Electrophysiology

Molecular Genetics of Cardiac Electrophysiology
Author: C. Berul
Publisher: Springer Science & Business Media
Total Pages: 396
Release: 2012-12-06
Genre: Medical
ISBN: 146154517X

The molecular basis for atrial fibrillation continues to be largely unknown, and therapy remains unchanged, aimed at controlling the heart rate and preventing systemic emboli with anticoagulation. Familial atrial fibrillation is more common than previously suspected. While atrial fibrillation is commonly associated with acquired heart disease, a significant proportion of individuals have early onset without other forms of heart disease, referred to as "lone" atrial fibrillators. It is also well recognized that atrial fibrillation occurs on a reversible or functional basis, without associated structural heart disease, such as with hyperthyroidism or of atrial fibrillation following surgery. It remains to be determined what percentage in these individuals is familial or due to a genetic predisposition. Mapping the locus for familial atrial fibrillation is the first step towards the identification of the gene. Isolation of the gene and subsequent identification of the responsible molecular genetic defect should provide a point of entry into the mechanism responsible for the familial form and the common acquired forms of the disease and eventually provide more effective therapy. We know that the ionic currents responsible for the action potential of the atrium is due to multiple channel proteins as is electrical conduction throughout the atria. Analogous to the ongoing genetic studies in patients with familial long QT syndrome, it is highly likely that defects in each of these channel proteins will be manifested in familial atrial fibrillation.

Molecular Genetics of Cardiac Electrophysiology

Molecular Genetics of Cardiac Electrophysiology
Author: C. Berul
Publisher: Springer Science & Business Media
Total Pages: 396
Release: 2000-04-30
Genre: Medical
ISBN: 9780792378297

The molecular basis for atrial fibrillation continues to be largely unknown, and therapy remains unchanged, aimed at controlling the heart rate and preventing systemic emboli with anticoagulation. Familial atrial fibrillation is more common than previously suspected. While atrial fibrillation is commonly associated with acquired heart disease, a significant proportion of individuals have early onset without other forms of heart disease, referred to as "lone" atrial fibrillators. It is also well recognized that atrial fibrillation occurs on a reversible or functional basis, without associated structural heart disease, such as with hyperthyroidism or of atrial fibrillation following surgery. It remains to be determined what percentage in these individuals is familial or due to a genetic predisposition. Mapping the locus for familial atrial fibrillation is the first step towards the identification of the gene. Isolation of the gene and subsequent identification of the responsible molecular genetic defect should provide a point of entry into the mechanism responsible for the familial form and the common acquired forms of the disease and eventually provide more effective therapy. We know that the ionic currents responsible for the action potential of the atrium is due to multiple channel proteins as is electrical conduction throughout the atria. Analogous to the ongoing genetic studies in patients with familial long QT syndrome, it is highly likely that defects in each of these channel proteins will be manifested in familial atrial fibrillation.

Molecular Physiology and Pharmacology of Cardiac Ion Channels and Transporters

Molecular Physiology and Pharmacology of Cardiac Ion Channels and Transporters
Author: M. Morad
Publisher: Springer Science & Business Media
Total Pages: 586
Release: 2012-12-06
Genre: Medical
ISBN: 9401139903

Knowledge of cardiac ion channels and transporters has advanced remarkably in the last two decades with the development of patch-clamp and molecular biological techniques. This textbook offers a comprehensive overview of structures and functions of ion channels and transporters in the heart. Readers are first introduced to the molecular biology and electrophysiology of all the important ion channels. After discussing their developmental changes, the pharmacology and pathophysiology of clinically-relevant ion channels are reviewed. Molecular aspects of the cardiac excitation-contraction coupling and intracellular Ca2+ regulation by ion transporters are also described. The book will be useful to electrophysiologists, cardiac physiologists and pharmacologists, and molecular biologists interested in ion channels at all levels. For research specialists, the book will provide a perspective of the field. The book can be used as a reference source for working scientists in the fields of ion channels, biophysics, cardiac electrophysiology, and pharmacology. It is aimed at graduate and medical students, designed for use as a textbook for graduate and medical courses.

Clinical Cardiac Electrophysiology in the Young

Clinical Cardiac Electrophysiology in the Young
Author: Macdonald Dick
Publisher: Springer Science & Business Media
Total Pages: 331
Release: 2006-08-13
Genre: Medical
ISBN: 0387291709

This volume focuses on the practical aspects of clinical electrophysiology of cardiac arrhythmias in the young as practiced in the Department of Pediatric Cardiology at the University of Michigan. Cardiac arrhythmias in children are often symptomatic as well as frightening to the child patient and parent. This volume is intended as a practical guide for the novice or seasoned physician presented with a child with a cardiac arrhythmia.

Myocardial Repolarization: From Gene to Bedside

Myocardial Repolarization: From Gene to Bedside
Author: Ali Oto
Publisher: Wiley-Blackwell
Total Pages: 402
Release: 2001-12-10
Genre: Medical
ISBN: 9780879934774

A convenient guide of easily accessible information on the mechanisms of myocardial repolarization and related clinical issues. This book provides a unique collection of contributions by prominent cardiologists on the current knowledge of the mechanisms of arrhythmias, the molecular and genetic bases of noninvasive electrocardiologic diagnosis, and other related clinical issues. In addition to mechanistic aspects, recent developments in the diagnosis of arrhythmias using newly recognized markers (QT dispersion, T-wave alternans, etc.) and their clinical importance are addressed in an easily accessible manner by world-renowned authors. The book is a quick-reference for practicing cardiologists and electrophysiologists, those in training, and others who work in the field of arrhythmology.

Cardiac Repolarization

Cardiac Repolarization
Author: Ihor Gussak
Publisher: Springer Science & Business Media
Total Pages: 549
Release: 2003-03-13
Genre: Medical
ISBN: 1592593623

A comprehensive review of all the latest developments in cardiac electrophysiology, focusing on both the clinical and experimental aspects of ventricular repolarization, including newly discovered clinical repolarization syndromes, electrocardiographic phenomena, and their correlation with the most recent advances in basic science. The authors illuminate the basic electrophysiologic, molecular, and pharmacologic mechanisms underlying ventricular repolarization, relate them to specific disease conditions, and examine the future of antiarrhythmic drug development based on both molecular and electrophysiological properties. They also fully review the clinical presentation and management of specific cardiac repolarization conditions.

Cardiac Electrophysiology: From Cell to Bedside E-Book

Cardiac Electrophysiology: From Cell to Bedside E-Book
Author: Douglas P. Zipes
Publisher: Elsevier Health Sciences
Total Pages: 1183
Release: 2009-05-06
Genre: Medical
ISBN: 143772762X

Cardiac Electrophysiology: From Cell to Bedside defines the entire state of current scientific and clinical knowledge in this subspecialty. In response to the many major recent developments in the field, Drs. Zipes and Jalife have completely updated this modern classic, making the 5th Edition the most significant revision yet. From our latest understanding of ion channels, molecular genetics, and cardiac electrical activity through newly recognized syndromes, unique needs of special patient populations, and new diagnostic and therapeutic options, you'll find all the state-of-the-art guidance you need to make informed, effective clinical decisions. What's more, a significantly restructured organization, a new full-color layout, and full-text online access make reference easier than ever. Integrates the latest scientific understanding of arrhythmias with the newest clinical applications, giving you an informed basis for choosing the right treatment and management options for each patient. Synthesizes the knowledge of preeminent authorities in cardiology, physiology, pharmacology, pediatrics, biophysics, pathology, cardiothoracic surgery, and biomedical engineering from around the world, giving you a well-rounded, expert grasp of every issue that affects your patient management. Contains 24 new chapters (listed below) as well as exhaustive updates throughout, to keep you current with new scientific knowledge, newly discovered arrhythmia syndromes, and new diagnostic and therapeutic techniques. Developmental Regulation of Cardiac Ion Channels Neural Mechanisms of Initiating and Maintaining Arrhythmias Single Nucleotide Polymorphisms and Acquired Cardiac Arrhythmias Inheritable Sodium Channel Diseases Inheritable Potassium Channel Diseases Inheritable Diseases of Intracellular Calcium Regulation Morphological Correlates of Atrial Arrhythmias Andersen-Tawil Syndrome Timothy Syndrome Progressive Cardiac Conduction Disease Sudden Infant Death Syndrome Arrhythmias in Patients with Neurologic Disorders Autonomic Testing Cardiac Resynchronization Therapy Energy Sources for Catheter Ablation Linear Lesions to Ablate Atrial Fibrillation Catheter Ablation of Ventricular Arrhythmias in Patients with Structural Heart Disease Catheter Ablation of Ventricular Arrhythmias in Patients without Structural Heart Disease Catheter Ablation in Patients with Congenital Heart Disease Features a completely new section on "Arrhythmias in Special Populations" that explores arrhythmias in athletes ... gender differences in arrhythmias ... arrhythmias in pediatric patients ... and sleep-disordered breathing and arrhythmias. Offers an attractive new full-color design featuring color photos, tables, flow charts, ECGs, and more, making clinically actionable information easy to find and absorb at a glance. Includes full-text online access via Expert Consult, making reference easier for busy practitioners.

Development of the Cardiac Conduction System

Development of the Cardiac Conduction System
Author: Derek J. Chadwick
Publisher: John Wiley & Sons
Total Pages: 300
Release: 2005-01-21
Genre: Medical
ISBN: 0470868031

The pacemaking and conduction system (PCS) is vital for generating and synchronizing the heart beat. Dysfunction of this system can be a direct cause of cardiac conduction disturbance, arrhythmias and sudden cardiac death. A wealth of information has been collected over many years on the unique histological, morphological and phenotypic characteristics of specialized cardiac tissues. The cellular and molecular mechanisms that govern development of the PCS are now starting to be understood. This book draws together contributions from an international and interdisciplinary group of experts working on both basic and clinical aspects of cardiac development. It features reviews of the structure and function of the developing PCS, discussion of the molecular and cellular mechanisms regulating embryological development of this system and studies on the fundamental basis of PCS pathology. The book also considers how novel therapeutic interventions based on understanding of the developmental biology of cardiac pacemaking and conduction tissues might ultimately impact on clinical medicine.

Heart Rate and Rhythm

Heart Rate and Rhythm
Author: Onkar N. Tripathi
Publisher: Springer Science & Business Media
Total Pages: 676
Release: 2011-05-02
Genre: Science
ISBN: 3642175759

Pathological heart rhythms are a major health issue. In this book experts from various fields provide an important context for understanding the complicated molecular and cellular mechanisms that underlie normal and pathophysiological cardiac rhythms. Individual chapters cover a full range of topics, including the ionic basis of pacemaking, the role of specific channels and transporters in sinoatrial node pacemaking, altered intracellular Ca2+ handling in response to disease, computer modeling of the action potentials of pacemaker and working cardiomyocytes, genetic and molecular basis of inherited arrhythmias and a review of established and novel antiarrhythmic agents. Due to the key importance of the specialized pacemaker cells and tissue (sinoatrial and atrioventricular nodes) in maintaining heart rate and rhythm, special emphasis is placed on the peculiar electrophysiology of these cells.