Acute neurohumoral modulation of diastolic function

Area of Science:

• Cardiology
• Physiology
• Molecular Medicine

Background:

• Diastole is vital for cardiovascular homeostasis, influenced by myocardial relaxation and ventricular wall properties.
• Diastolic dysfunction and heart failure with normal ejection fraction are significant clinical concerns.
• Neurohumoral mediators like angiotensin-II and endothelin-1 were historically viewed as having only chronic detrimental effects on diastolic function.

Purpose of the Study:

• To review the acute modulatory roles of specific peptides on diastolic function.
• To emphasize the pathophysiological relevance of these acute effects.
• To highlight the potential for adaptive cardiac responses mediated by these peptides.

Main Methods:

• Systematic review of existing literature.
• Analysis of studies investigating neurohumoral mediators and diastolic function.
• Focus on acute versus chronic effects of mediators.

Main Results:

• Evidence suggests peptides like angiotensin-II, endothelin-1, nitric oxide, urotensin-II, and ghrelin acutely modulate diastolic function.
• These acute modulations may induce adaptive cardiac responses.
• Understanding these acute effects is crucial for deciphering diastolic dysfunction.

Conclusions:

• Diastolic function is actively modulated by multiple mediators with both acute and chronic effects.
• Acute modulation by certain peptides can be adaptive, challenging previous chronic-focused views.
• Further understanding of acute diastolic modulation is key to addressing heart failure with normal ejection fraction.