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Updated: Mar 29, 2026

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
New antiarrhythmic targets in atrial fibrillation
Niels Voigt1, Jordi Heijman1, Dobromir Dobrev1
1Faculty of Medicine, Institute of Pharmacology, University Duisburg-Essen, Hufelandstr 55, 45122 Essen, Germany.
Insights
Atrial fibrillation (AF) treatments lack efficacy and cause side effects. New drug targets are emerging from a better understanding of AF molecular mechanisms, promising safer and more effective therapies.
Area of Science:
- Cardiology
- Pharmacology
- Molecular Biology
Background:
- Atrial fibrillation (AF) is a prevalent cardiac arrhythmia linked to significant mortality and morbidity.
- Current AF pharmacotherapies demonstrate limited efficacy and carry risks of bleeding and proarrhythmia.
- Empirical drug development, lacking mechanistic insight, underlies current treatment limitations.
Purpose of the Study:
- To review novel antiarrhythmic drug targets for atrial fibrillation.
- To highlight the impact of recent advances in understanding AF molecular mechanisms on drug development.
Main Methods:
- Literature review of recent research on atrial fibrillation molecular mechanisms.
- Analysis of emerging antiarrhythmic drug targets based on molecular insights.
Main Results:
- Substantial progress in elucidating AF's molecular underpinnings has been achieved.
- New molecular targets offer potential for developing improved antiarrhythmic drugs.
Conclusions:
- Understanding AF molecular mechanisms is crucial for advancing antiarrhythmic drug discovery.
- Emerging targets promise more effective and safer treatments for atrial fibrillation.
Abstract:
Atrial fibrillation (AF) is the most common cardiac arrhythmia in developed countries. AF is associated with increased mortality and morbidity due to thromboembolism, stroke and worsening of pre-existing heart failure. Currently available pharmacological therapies for AF suffer from unsatisfying efficacy and/or are associated with major side effects such as bleeding complications or proarrhythmia. These limitations largely result from the fact that most of the currently available drugs were developed on an empirical basis, without precise knowledge of the molecular mechanisms underlying the arrhythmia. During the last decade substantial progress has been made in understanding the molecular mechanisms contributing to the initiation and maintenance of AF. This knowledge is expected to stimulate the development of safer and more effective drugs. Here, we review new antiarrhythmic drug targets, which have emerged based on this increasing knowledge about the molecular mechanisms of AF.
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