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Coronary endothelial function in health and disease
1Cardiorenal Research Laboratory, Mayo Clinic and Foundation, Rochester, Minnesota, USA.
Insights
Coronary endothelium regulates vascular tone and growth via nitric oxide (NO), C-type natriuretic peptide (CNP), and endothelin-1 (ET-1). Imbalances in these factors contribute to cardiovascular diseases like atherosclerosis and hypertension.
Area of Science:
- Cardiovascular Physiology
- Endothelial Biology
- Vascular Medicine
Background:
- The endothelium plays a crucial role in regulating coronary vascular tone and growth.
- Key endothelial factors include vasodilators like nitric oxide (NO) and C-type natriuretic peptide (CNP), and vasoconstrictors like endothelin-1 (ET-1).
- Dysregulation of these factors is implicated in cardiovascular diseases.
Purpose of the Study:
- To summarize current knowledge on endothelial control of the coronary circulation.
- To review the derangements associated with coronary endothelial dysfunction in cardiovascular diseases.
Main Methods:
- Review of existing literature on endothelial function and coronary circulation.
- Analysis of the roles of NO, CNP, and ET-1 in vascular health and disease.
Main Results:
- Cardiovascular diseases such as atherosclerosis, heart failure, hypertension, and hypercholesterolemia are associated with impaired NO and/or CNP activity.
- Elevated plasma levels of ET-1 are observed in these pathological states.
- An imbalance, characterized by reduced NO/CNP and increased ET-1, likely contributes to altered vascular tone and remodeling.
Conclusions:
- An imbalance between vasodilating/growth-inhibiting (NO, CNP) and vasoconstricting/growth-promoting (ET-1) factors contributes to cardiovascular pathophysiology.
- Coronary endothelial dysfunction, marked by this imbalance, is a key feature of various cardiovascular diseases.
Abstract:
The endothelium participates in the control of coronary vascular tone and growth through the release of vasodilating and growth-inhibiting factors such as nitric oxide (NO) and C-type natriuretic peptide (CNP), and vasoconstricting and growth-promoting substances such as endothelin-1 (ET-1). Abnormalities in NO and/or CNP generation or actions have been demonstrated in various cardiovascular pathophysiological states, specifically atherosclerosis, congestive heart failure, hypertension and hypercholesterolaemia. Moreover, an increase in plasma ET-1 levels has also been reported in these disease states. When these observations are considered together, these states may be characterised by an attenuated release or action of NO and/or CNP, together with an augmented release of ET-1. Thus, an imbalance between these opposing factors may contribute to the alteration in vascular tone and the vascular remodelling characteristics of cardiovascular disease. The following article summarises the present knowledge of endothelial control of the coronary circulation and derangements associated with coronary endothelial dysfunction.