Related Experiment Videos
Analytical model for predicting mechanotransduction effects in engineered cardiac tissue
David C Latimer1, Bradley J Roth, Kevin Kit Parker
1Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 48309, USA.
Tissue Engineering
|May 13, 2003
Summary
A new mathematical model quantifies stress and strain in cardiac tissue, revealing complex stretch patterns near ischemic regions. These findings aid in understanding cardiac fibrosis and arrhythmias.
Area of Science:
- Cardiovascular Physiology
- Biomechanical Engineering
- Computational Biology
Background:
- Mechanochemical and mechanoelectrical signaling are crucial for heart development and disease.
- In vitro cardiac tissue engineering offers new ways to study these signals.
- Existing models lack adaptability for experimental design.
Purpose of the Study:
- To develop a mathematical model for stress and strain distribution in fibrous cardiac tissue.
- To analyze strain patterns in the vicinity of ischemic regions.
- To provide a tool for understanding mechanochemical and mechanoelectrical signaling in the heart.
Main Methods:
- Developed a fluid-fiber-collagen mathematical model.
- Analytically solved the model for stress and strain distributions along myocardial fibers.
- Applied the model to simulate strain in an ischemic region and its surrounding tissue.
Main Results:
- The model characterizes the mechanical behavior of cardiac tissue.
- Predicted complex strain distributions in the border zone of ischemic regions.
- Identified strain patterns in nonischemic regions adjacent to the border zone.
Conclusions:
- The developed model accurately predicts stress and strain in cardiac tissue.
- Predicted strain patterns may correlate with fibrosis and altered gene expression.
- These patterns are relevant for understanding mechanoelectrical signaling and cardiac arrhythmias.