Download or read book A Multiscale Model to Predict the Effects of Antiarrhythmic Drugs on Cardiac Rhythms written by Jonathan D. Moreno and published by . This book was released on 2012 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: A long sought, and thus far elusive, goal has been to develop drugs to manage diseases of excitability. One such disease affecting millions each year is cardiac arrhythmia, which occurs when electrical impulses in the heart become disordered. A major reason that pharmacological management of cardiac arrhythmia has failed is because there is no adequate framework currently available to predict how drugs that target cardiac ion channels, and that have intrinsically complex dynamics, will alter the emergent electrical behavior generated in the heart. In Part I of this thesis, I present a computational modeling approach, based on and validated by experimental data, that defines key measurable parameters necessary to accurately simulate the kinetics of antiarrhythmic drugs with cardiac Na + channels, and then predicts their effects on simulated human cardiac rhythms. The model forecasts the timing of specific activation sequences where clinically relevant concentrations of the antiarrhythmic drugs flecainide and lidocaine will cause, rather than prevent, arrhythmia. We then conducted experiments in rabbit hearts to validate the model predictions. Simulations in virtual human cardiac tissue suggest a "safe concentration range" for therapeutic use. In Part II of this thesis, I extend our analysis to a congenital disease of cardiac arrhythmia - the long QT3 syndrome (LQT3) - and study a particular variant, the ?KPQ mutation. I model the effects of a new drug, ranolazine, which specifically targets the mutation-induced late Na + current, on the AKPQ mutant heart, and assess antiarrhythmic efficacy by simulating pacing sequences common in these patients. The model framework presented in this thesis is the foundation for development of a high-throughput virtual drug testing system that will allow for integration of data on drug / channel interactions, more accurate prediction of treatment efficacy that is genotype specific, and prediction of drug effects on emergent dynamics in a complex excitable system.
Download or read book Zipes and Jalife s Cardiac Electrophysiology From Cell to Bedside written by Jose Jalife and published by Elsevier Health Sciences. This book was released on 2021-12-16 with total page 1709 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated from cover to cover, Zipes and Jalife’s Cardiac Electrophysiology: From Cell to Bedside, 8th Edition, provides the comprehensive, multidisciplinary coverage you need—from new knowledge in basic science to the latest clinical advances in the field. Drs. José Jalife and William Gregory Stevenson lead a team of global experts who provide cutting-edge content and step-by-step instructions for all aspects of cardiac electrophysiology. Packs each chapter with the latest information necessary for optimal basic research as well as patient care. Covers new technologies such as CRISPR, protein research, improved cardiac imaging, optical mapping, and wearable devices. Contains significant updates in the areas of molecular biology and genetics, iPSCs (induced pluripotent stem cells), embryonic stem cells, precision medicine, antiarrhythmic drug therapy, cardiac mapping with advanced techniques, and ablation technologies including stereotactic radioablation. Includes 47 new standalone chapters that are organized into discrete topics for improved access. Discusses extensive recent progress in the understanding, diagnosis, and management of arrhythmias, including new clinical insights on atrial fibrillation and stroke prevention, new advances in the understanding of ventricular arrythmias in genetic disease, and advances in implantable devises and infection management. Features 1,600 high-quality photographs, anatomic and radiographic images, electrocardiograms, tables, algorithms, and more., with additional figures, tables, and videos online. Recipient of a 2018 Highly Commended award from the British Medical Association.
Download or read book Perspectives on Antiarrhythmic Drug Therapy Disappointing Past Current Efforts and Faint Hopes written by Peter P. Nanasi and published by Frontiers Media SA. This book was released on 2020-09-08 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Download or read book Simulating Normal and Arrhythmic Dynamics From Sub Cellular to Tissue and Organ Level written by Hans Dierckx and published by Frontiers Media SA. This book was released on 2019-10-04 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Safety Pharmacology Risk Assessment QT Interval Prolongation and Beyond written by Esther Pueyo and published by Frontiers Media SA. This book was released on 2018-08-16 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current regulatory guidelines for cardiac safety utilize hERG block and QT interval prolongation as risk markers. This strategy has been successful at preventing harmful drugs from being marketed, but criticized for leading to early withdrawal of potentially safe drugs. Here we collected a series of articles presenting new technological and conceptual advances, including refinement of ex vivo and in vitro assays, screens and models, and in silico approaches reflecting the increasing effort that has been put forward by regulatory agencies, industry, and academia to try and address the need of a more accurate, mechanistically-based paradigm of proarrhythmic potential of drugs. This Research Topic is dedicated to the memory of Dr. J. Jeremy Rice, our wonderful friend and colleague.
Download or read book Recent Advances in Understanding the Basic Mechanisms of Atrial Fibrillation Using Novel Computational Approaches written by Jichao Zhao and published by Frontiers Media SA. This book was released on 2019-11-25 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 2013-10-11 with total page 1397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac Electrophysiology: From Cell to Bedside puts the latest knowledge in this subspecialty at your fingertips, giving you a well-rounded, expert grasp of every cardiac electrophysiology issue that affects your patient management. Drs. Zipes, Jalife, and a host of other world leaders in cardiac electrophysiology use a comprehensive, multidisciplinary approach to guide you through all of the most recent cardiac drugs, techniques, and technologies. Consult this title on your favorite e-reader, conduct rapid searches, and adjust font sizes for optimal readability. Compatible with Kindle®, nook®, and other popular devices. Get well-rounded, expert views of every cardiac electrophysiology issue that affects your patient management from preeminent authorities in cardiology, physiology, pharmacology, pediatrics, biophysics, pathology, cardiothoracic surgery, and biomedical engineering from around the world. Visually grasp and easily absorb complex concepts through an attractive full-color design featuring color photos, tables, flow charts, ECGs, and more! Integrate the latest scientific understanding of arrhythmias with the newest clinical applications, to select the right treatment and management options for each patient. Stay current on the latest advancements and developments with sweeping updates and 52 NEW chapters - written by many new authors - on some of the hottest cardiology topics, such as new technologies for the study of the molecular structure of ion channels, molecular genetics, and the development of new imaging, mapping and ablation techniques. Get expert advice from Dr. Douglas P. Zipes - a leading authority in electrophysiology and editor of Braunwald’s Heart Disease and the Heart Rhythm Journal - and Dr. Jose Jalife - a world-renowned leader and researcher in basic and translational cardiac electrophysiology. Access the full text online at Expert Consult, including supplemental text, figures, tables, and video clips.
Download or read book Toxicological Profile for Toluene written by and published by . This book was released on 2000 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heart Rate and Rhythm written by Onkar N. Tripathi and published by Springer Science & Business Media. This book was released on 2011-05-02 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Cardiac Mechano Electric Coupling and Arrhythmias written by Peter Kohl and published by OUP Oxford. This book was released on 2011-08-25 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cardiac Mechano-Electric Coupling and Arrhythmias offers a thoroughly reviewed compendium written by leading experts in the field on the mechanism and consequences of cardiac mechano-electrical coupling. Its coverage ranges from stretch-activated ion channels to mechanically induced arrhythmias and mechanical interventions for heart rhythm correction. Information is grouped into logical sections, from molecular mechanisms, to cell, tissue and whole organ responses, right through to patient-based observations and insight emerging from clinical trials. The information provided carefully highlights both consensus insight and current shortcomings in our understanding of cardiac mechano-electric coupling. The book has been thoroughly revised and expanded since publication of the first edition in 2005, extensively updated to reflect recent developments in the field, and now offers a more balanced view of mechano-electrical interactions in the heart and develops a more clinical focus. Written with the practising cardiologist and junior doctor in mind, it offers interesting new insight for the established physician with an interest in cardiac arrhythmogenesis and heart rhythm management.
Download or read book Electrocardiographic Imaging written by Maria S. Guillem and published by Frontiers Media SA. This book was released on 2020-04-17 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrical activity in the myocardium coordinates the contraction of the heart, and its knowledge could lead to a better understanding, diagnosis, and treatment of cardiac diseases. This electrical activity generates an electromagnetic field that propagates outside the heart and reaches the human torso surface, where it can be easily measured. Classical electrocardiography aims to interpret the 12-lead electrocardiogram (ECG) to determine cardiac activity and support the diagnosis of cardiac pathologies such as arrhythmias, altered activations, and ischemia. More recently, a higher number of leads is used to reconstruct a more detailed quantitative description of the electrical activity in the heart by solving the so-called inverse problem of electrocardiography. This technique is known as ECG imaging. Today, clinical applications of ECG imaging are showing promising results in guiding a variety of electrophysiological interventions such as catheter ablation of atrial fibrillation and ventricular tachycardia. However, in order to promote the adoption of ECG imaging in the routine clinical practice, further research is required regarding more accurate mathematical methods, further scientific validation under different preclinical scenarios and a more extensive clinical validation
Download or read book Drug Discovery and Evaluation Pharmacological Assays written by Hans Vogel and published by Springer Science & Business Media. This book was released on 2007-10-30 with total page 2118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The new edition of this successful reference offers both cutting-edge and classic pharmacological methods. Thoroughly revised and expanded to two volumes, it offers an updated selection of the most frequently used assays for reliably detecting the pharmacological effects of potential drugs. Every chapter has been updated, and numerous assays have been added. Each of the more than 1,000 assays comprises a detailed protocol outlining purpose and rationale, and a critical assessment of the results and their pharmacological and clinical relevance.
Download or read book Encyclopedia of Cell Biology written by and published by Academic Press. This book was released on 2015-08-07 with total page 2972 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Cell Biology, Four Volume Set offers a broad overview of cell biology, offering reputable, foundational content for researchers and students across the biological and medical sciences. This important work includes 285 articles from domain experts covering every aspect of cell biology, with fully annotated figures, abundant illustrations, videos, and references for further reading. Each entry is built with a layered approach to the content, providing basic information for those new to the area and more detailed material for the more experienced researcher. With authored contributions by experts in the field, the Encyclopedia of Cell Biology provides a fully cross-referenced, one-stop resource for students, researchers, and teaching faculty across the biological and medical sciences. Fully annotated color images and videos for full comprehension of concepts, with layered content for readers from different levels of experience Includes information on cytokinesis, cell biology, cell mechanics, cytoskeleton dynamics, stem cells, prokaryotic cell biology, RNA biology, aging, cell growth, cell Injury, and more In-depth linking to Academic Press/Elsevier content and additional links to outside websites and resources for further reading A one-stop resource for students, researchers, and teaching faculty across the biological and medical sciences
Download or read book Modeling and Simulating Cardiac Electrical Activity written by David J. Christini and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a thorough introduction to the topic of mathematical modeling of electrical activity in the heart, from molecular details of ionic channel dynamics to clinically derived patient-specific models. It discusses how cellular ionic models are formulated, introduces commonly used models and explains why there are so many different models available. The chapters cover modeling of the intracellular calcium handling that underlies cellular contraction as well as modeling molecular-level details of cardiac ion channels, and also focus on specialized topics such as cardiomyocyte energetics and signalling pathways. It is an excellent resource for experienced and specialised researchers in the field, but also biological scientists with a limited background in mathematical modelling and computational methods. Part of Biophysical Society-IOP series.
Download or read book Concepts and Principles of Pharmacology written by James E. Barrett and published by Springer Nature. This book was released on 2019-12-24 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Celebrating 100 years of HEP, this volume will discuss key pharmacological discoveries and concepts of the past 100 years. These discoveries have dramatically changed the medical treatment paradigms of many diseases and these concepts have and will continue to shape discovery of new medicinies. Newly evolving technologies will similarly be discussed as they will shape the future of the pharmacology and, accordingly, medical therapy.
Download or read book The Heart Healers written by James Forrester and published by Macmillan + ORM. This book was released on 2015-09-29 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: At one time, heart disease was a death sentence. In The Heart Healers, world renowned cardiac surgeon Dr. James Forrester tells the story of the mavericks and rebels who defied the accumulated medical wisdom of the day to begin conquering heart disease. By the middle of the 20th century, heart disease was killing millions and, as with the Black Death centuries before, physicians stood helpless. Visionaries, though, had begun to make strides earlier. On Sept. 7, 1895, Ludwig Rehn successfully sutured the heart of a living man with a knife wound to the chest for the first time. Once it was deemed possible to perform surgery on the heart, others followed. In 1929, Dr. Werner Forssman inserted a cardiac catheter in his own arm and forced the x-ray technician on duty to take a photo as he successfully threaded it down the vein into his own heart...and lived. On June 6, 1944 - D-Day - another momentous event occurred far from the Normandy beaches: Dr. Dwight Harken sutured the shrapnel-injured heart of a young soldier, saved his life and the term "cardiac surgeon" born. Dr. Forrester tells the story of these rebels and the risks they took with their own lives and the lives of others to heal the most elemental of human organs - the heart. The result is a compelling chronicle of a disease and its cure, a disease that is still with us, but one that is slowly being worn away by "The Heart Healers".
Download or read book Multiscale Modelling and Simulation written by Sabine Attinger and published by Springer Science & Business Media. This book was released on 2004-07-12 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: In August 2003, ETHZ Computational Laboratory (CoLab), together with the Swiss Center for Scientific Computing in Manno and the Università della Svizzera Italiana (USI), organized the Summer School in "Multiscale Modelling and Simulation" in Lugano, Switzerland. This summer school brought together experts in different disciplines to exchange ideas on how to link methodologies on different scales. Relevant examples of practical interest include: structural analysis of materials, flow through porous media, turbulent transport in high Reynolds number flows, large-scale molecular dynamic simulations, ab-initio physics and chemistry, and a multitude of others. Though multiple scale models are not new, the topic has recently taken on a new sense of urgency. A number of hybrid approaches are now created in which ideas coming from distinct disciplines or modelling approaches are unified to produce new and computationally efficient techniques.
