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The cardiac endothelium: functional morphology, development, and physiology
D L Brutsaert1, G W De Keulenaer, P Fransen
1Laboratory of Human Physiology and Pathophysiology, Antwerp University, Belgium.
Progress in Cardiovascular Diseases
|November 1, 1996
Summary
Cardiac endothelial cells influence heart function by modulating cardiomyocyte performance, controlling ventricular relaxation and filling. This review explores their mechanisms, including ion gradients and cardioactive substances.
Area of Science:
- Cardiovascular Biology
- Cellular Physiology
Background:
- Cardiac endothelial cells (CECs) are crucial for heart function.
- CECs originate from endocardial and coronary microvascular sources.
- They directly influence cardiomyocyte mechanical performance.
Purpose of the Study:
- To review CEC morphology, embryology, and comparative physiology.
- To summarize experimental findings on CEC effects on heart mechanics.
- To elucidate mechanisms of CEC-cardiomyocyte interaction.
Main Methods:
- Literature review of CEC morphology, embryology, and physiology.
- Analysis of experimental studies on CECs and cardiac mechanics.
- Examination of proposed interaction mechanisms.
Main Results:
- CECs modulate ventricular relaxation and rapid filling.
- Two primary interaction hypotheses exist: trans-endothelial ion gradients and release of cardioactive substances.
- Mechanisms may operate independently or synergistically.
Conclusions:
- CECs play a vital role in regulating cardiac mechanical performance.
- Understanding CEC-cardiomyocyte interactions is key to cardiac physiology.
- Mechanisms involve both direct cellular communication and paracrine signaling.