Effects of Omega-3 Fatty Acids on Arrhythmogenic Mechanisms in Animal and Isolated Organ/cell Culture Studies PDF Download
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Author:
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ISBN:
Category : Arrhythmia
Languages : en
Pages : 8
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Book Description
Author:
Publisher:
ISBN:
Category : Arrhythmia
Languages : en
Pages : 8
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Author:
Publisher:
ISBN:
Category : Arrhythmia
Languages : en
Pages :
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Author: U.s. Department of Health and Human Services
Publisher: CreateSpace
ISBN: 9781500333751
Category : Medical
Languages : en
Pages : 240
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Book Description
This evidence report is one of three prepared by the Tufts-New England Medical Center Evidence-based Practice Center (EPC) concerning the health benefits of omega-3 fatty acids on cardiovascular diseases. The aim of these reports is to summarize the current evidence of the health effects of omega-3 fatty acids on: cardiovascular diseases, cancer, child and maternal health, eye health, gastrointestinal/renal diseases, asthma, autoimmune diseases, immune-mediated diseases, transplantation, mental health, and neurological diseases and conditions. The focus of this report is on arrhythmogenic mechanisms in animal and isolated organ and cell culture studies. Arrhythmias are thought to be the cause of “sudden death” in heart disease. Animal studies have suggested that omega-3 long-chain polyunsaturated fatty acids (LC PUFAs), such as eicosapentaenoic acid (EPA, 20:5 n-3) and docosahexaenoic acid (DHA, 22:6 n-3), engage in multiple cytoprotective activities that may contribute to antiarrhythmic mechanisms. In this report, we examine evidence that omega-3 fatty acids affect cell organelles—such as cardiac ion channels, pumps, or exchange mechanisms—that are involved in cardiac electrophysiology or electrogenesis. The key questions addressed by this report are: 1) What is the evidence from whole animal studies that omega-3 fatty acids affect arrhythmogenic outcomes (and intermediate outcomes)? 2) What is the evidence from cell culture and tissue studies (including animal and human cardiac tissue) that omega-3 fatty acids directly affect cell organelles such as cardiac ion channels, pumps, or exchange mechanisms involved in electrogenesis? In whole animal studies examined for this report, omega-3 fatty acids were fed to whole, intact animals as part of their diet or were infused intravenously. Outcomes examined by these studies include induced arrhythmia, ventricular ectopic beats, and ventricular and atrial fibrillation. In whole animal isolated organ and cell studies, omega-3 fatty acids were fed to whole, intact animals as part of their diet, and organs or cell tissues were subsequently excised from the animal to study outcomes such as arrhythmia, and myocyte contraction and beating rate. In “pure” isolated organ and cell studies, omega-3 fatty acids were applied directly to mammalian tissues or cultured cell lines or incorporated into the membrane of the mammalian tissues or cultured cell lines. Outcomes examined in these studies include induced arrhythmia, myocyte contraction and beating rate, and any other arrhythmogenic outcomes. In examining studies for this report, we focused on several potential arrhythmogenic mechanisms, including contractile parameters, basoelectromechanical parameters, ion pumps, ion channels, and membrane currents.
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Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Arrhythmia
Languages : en
Pages : 8
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Author: Lindsay Brown
Publisher: MDPI
ISBN: 303842272X
Category : Medical
Languages : en
Pages : 325
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This book is a printed edition of the Special Issue "Omega-3 Fatty Acids in Health and Disease" that was published in JCM
Author: John Mark Black
Publisher:
ISBN:
Category :
Languages : en
Pages : 682
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Author: George Edward Billman
Publisher: John Wiley & Sons
ISBN: 9780470561409
Category : Medical
Languages : en
Pages : 608
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Book Description
Profiles potential treatment approaches for cardiac arrhythmias Cardiac arrhythmias of ventricular origin are responsible for the deaths of nearly half a million Americans each year while atrial fibrillation accounts for about 2.3 million cases per year, a rate that is projected to increase 2.5 fold over the next half century. Effectively managing these cardiac rhythm disorders remains a major challenge for both caregivers and the pharmaceutical industry. Filling a gap in the current literature, Novel Therapeutic Targets for Antiarrhythmic Drugs presents the latest treatments for cardiac arrhythmias alongside comprehensive presentations of basic cardiac physiology and pharmacology. Written by leading experts in their research areas, this invaluable resource offers both practitioners and researchers a one-stop guide that brings together previously dispersed information. The text consists of four sections: Section One comprehensively reviews basic cardiac electrophysiology, the mechanisms responsible for arrhythmias in the setting of ischemia, and basic pharmacology of antiarrhythmic drugs. Section Two addresses safety pharmacology, including the concept of "repolarization reserve," safety challenges, and regulatory issues for the development of novel antiarrhythmic drugs. Section Three describes several novel pharmacological targets for antiarrhythmic drugs, including both ion channel and non-ion channel targets. Section Four describes promising non-pharmacological antiarrhythmic interventions including selective cardiac neural disruption or nerve stimulation, aerobic exercise training, and diet (omega-3 fatty acids). Offering an unparalleled look at the current state and future direction of cardiac arrhythmia treatment, Novel Therapeutic Targets for Antiarrhythmic Drugs provides an important resource to advanced students, working researchers, and busy professionals alike.
Author:
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ISBN:
Category : Medicine
Languages : en
Pages : 2002
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Book Description
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Author:
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ISBN:
Category : Cardiovascular system
Languages : en
Pages : 8
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Book Description
