Endothelial Autophagy in Coronary Microvascular Dysfunction and Cardiovascular Disease
Fujie Zhao1, Ganesh Satyanarayana2, Zheng Zhang1
1Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Insights
Coronary microvascular dysfunction (CMD) involves impaired blood flow due to microcirculation issues. Endothelial autophagy dysfunction is increasingly recognized as a key factor in CMD and various cardiovascular diseases (CVDs).
Area of Science:
- Cardiology
- Vascular Biology
- Cellular Biology
Background:
- Coronary microvascular dysfunction (CMD) is a significant factor in various cardiovascular diseases (CVDs).
- The endothelium plays a crucial role in regulating coronary microcirculation and cardiac function.
- Autophagy in endothelial cells is implicated in the pathogenesis of CMD.
Purpose of the Study:
- To review the pathophysiological mechanisms of autophagy in coronary endothelial cells.
- To discuss the role of endothelial autophagy in CMD and its associated CVDs.
Main Methods:
- Literature review of current research on endothelial autophagy and CMD.
- Synthesis of findings on the molecular mechanisms linking autophagy to endothelial dysfunction.
Main Results:
- Dysfunctional endothelial autophagy contributes to impaired coronary blood flow and myocardial ischemia.
- Autophagy dysregulation is observed in conditions such as diabetic cardiomyopathy and heart failure with preserved ejection fraction.
Conclusions:
- Targeting endothelial autophagy may offer novel therapeutic strategies for CMD.
- Further research is needed to fully elucidate the complex role of autophagy in cardiovascular health and disease.
Abstract:
Coronary microvascular dysfunction (CMD) refers to a subset of structural and/or functional disorders of coronary microcirculation that lead to impaired coronary blood flow and eventually myocardial ischemia. Amid the growing knowledge of the pathophysiological mechanisms and the development of advanced tools for assessment, CMD has emerged as a prevalent cause of a broad spectrum of cardiovascular diseases (CVDs), including obstructive and nonobstructive coronary artery disease, diabetic cardiomyopathy, and heart failure with preserved ejection fraction. Of note, the endothelium exerts vital functions in regulating coronary microvascular and cardiac function. Importantly, insufficient or uncontrolled activation of endothelial autophagy facilitates the pathogenesis of CMD in diverse CVDs. Here, we review the progress in understanding the pathophysiological mechanisms of autophagy in coronary endothelial cells and discuss their potential role in CMD and CVDs.
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