Is the peripheral microcirculation a window into the human coronary microvasculature?

Area of Science:

• Cardiovascular Science
• Vascular Biology
• Medical Research

Background:

• Microvascular dysfunction, particularly in the coronary endothelium, is a significant risk factor for major adverse cardiac events.
• Current methods for evaluating coronary microvasculature are often invasive and costly.
• The peripheral microcirculation offers a more accessible alternative for studying microvascular health.

Purpose of the Study:

• To critically evaluate studies assessing the peripheral microcirculation as a surrogate for coronary microvascular health.
• To determine if peripheral microcirculation can provide insights into coronary microvascular dysfunction.
• To explore the potential of peripheral microcirculation in predicting cardiovascular outcomes.

Main Methods:

• Review of prognostic, physiological, and mechanistic studies in humans.
• Analysis of existing evidence correlating coronary and peripheral endothelial function.
• Evaluation of the response of peripheral microvasculature to (patho)physiological stress.

Main Results:

• Evidence suggests a correlation between human coronary and peripheral endothelial function in vivo.
• The peripheral microvasculature exhibits similar responses to stress as the coronary microvasculature.
• Peripheral microcirculation can be leveraged to study mechanisms of coronary microvascular dysfunction.

Conclusions:

• The peripheral microcirculation shows promise as a non-invasive surrogate for assessing coronary microvascular health.
• Endothelial health is a key factor linking coronary and peripheral microvascular beds.
• Peripheral microcirculation studies may aid in developing therapeutic strategies for cardiovascular diseases.