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Animal Models to Study Cardiac Arrhythmias
Daniel J Blackwell1, Jeffrey Schmeckpeper1, Bjorn C Knollmann1
1Vanderbilt Center for Arrhythmia Research and Therapeutics, Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN.
Insights
Cardiac arrhythmias cause significant deaths globally. This review explores arrhythmia mechanisms and animal models for inherited and acquired heart conditions, aiding therapeutic development.
Area of Science:
- Cardiology
- Genetics
- Physiology
Background:
- Cardiac arrhythmias are a major cause of global mortality.
- Inherited channelopathies and cardiomyopathies disproportionately impact young individuals.
- Arrhythmogenesis involves complex interactions of cardiac structures, ion channels, and cellular components.
Purpose of the Study:
- To summarize basic and clinical mechanisms of cardiac arrhythmias.
- To review animal models for studying genetic and acquired arrhythmia disorders.
- To highlight the utility of animal models in understanding arrhythmogenesis and testing therapies.
Main Methods:
- Literature review of basic and clinical arrhythmia mechanisms.
- In-depth analysis of published animal models for arrhythmia research.
- Synthesis of information on molecular, cellular, and whole-heart mechanisms.
Main Results:
- Cardiac arrhythmias represent a significant global health burden.
- Inherited heart conditions pose a particular risk to younger populations.
- Animal models are crucial for elucidating complex arrhythmia mechanisms and evaluating treatments.
Conclusions:
- Understanding arrhythmia mechanisms is vital for reducing mortality.
- Animal models provide essential platforms for advancing arrhythmia research.
- Further research using animal models can accelerate the development of novel therapeutic strategies.
Abstract:
Cardiac arrhythmias are a significant cause of morbidity and mortality worldwide, accounting for 10% to 15% of all deaths. Although most arrhythmias are due to acquired heart disease, inherited channelopathies and cardiomyopathies disproportionately affect children and young adults. Arrhythmogenesis is complex, involving anatomic structure, ion channels and regulatory proteins, and the interplay between cells in the conduction system, cardiomyocytes, fibroblasts, and the immune system. Animal models of arrhythmia are powerful tools for studying not only molecular and cellular mechanism of arrhythmogenesis but also more complex mechanisms at the whole heart level, and for testing therapeutic interventions. This review summarizes basic and clinical arrhythmia mechanisms followed by an in-depth review of published animal models of genetic and acquired arrhythmia disorders.
