Related Experiment Video
Updated: May 18, 2026

Isolation and Characterization of Adult Cardiac Fibroblasts and Myofibroblasts
Published on: March 12, 2020
The origin and arrhythmogenic potential of fibroblasts in cardiac disease
Carolina Vasquez1, Gregory E Morley
1Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, 522 First Avenue, Smilow Building 8th Floor, New York, NY 10016, USA.
Insights
Cardiac fibroblasts significantly impact heart function and disease. This review explores how fibroblast-myocyte interactions contribute to arrhythmias and discusses fibroblast origins in diseased hearts.
Area of Science:
- Cardiovascular Research
- Cardiac Electrophysiology
- Fibroblast Biology
Background:
- Fibroblasts are crucial in cardiac physiology, injury response, and disease.
- Cardiac electrophysiology research traditionally emphasizes myocyte remodeling.
- Emerging evidence highlights the significant role of fibroblasts in cardiac electrophysiology.
Purpose of the Study:
- To review arrhythmia mechanisms involving myocyte-fibroblast interactions.
- To discuss the origins of fibroblast and myofibroblast populations in diseased hearts.
- To synthesize current understanding of fibroblast contributions to cardiac electrophysiology.
Main Methods:
- Literature review of cardiac electrophysiology and fibroblast research.
- Analysis of studies on myocyte-fibroblast electrical coupling.
- Examination of evidence for intracardiac and extracardiac fibroblast sources.
Main Results:
- Fibroblast-myocyte interactions are implicated in cardiac arrhythmia mechanisms.
- Both intracardiac and extracardiac sources contribute to fibroblast populations in diseased hearts.
- Fibroblasts and myofibroblasts can alter cardiac electrical properties.
Conclusions:
- Fibroblasts are key players in cardiac electrophysiology and arrhythmogenesis.
- Understanding fibroblast origins and functions is vital for treating cardiac diseases.
- Further research into fibroblast-myocyte interactions can reveal new therapeutic targets for arrhythmias.
Abstract:
Fibroblasts play a major role in normal cardiac physiology and in the response of the heart to injury and disease. Cardiac electrophysiological research has primarily focused on the mechanisms of remodeling that accompany cardiac disease with an emphasis on myocyte electrophysiology. Recently, there has been increasing interest in the potential role of fibroblasts in cardiac electrophysiology. This review focuses on the arrhythmia mechanisms involving interactions between myocytes and fibroblasts. We also discuss the available evidence supporting the contribution of intracardiac and extracardiac sources to the fibroblast and myofibroblast populations in diseased hearts.
Related Concept Videos
Introduction to Fibroblasts
Mechanism of Cardiac Arrhythmias
Electrophysiology of Normal Cardiac Rhythm
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

