Central nervous system circuits modified in heart failure: pathophysiology and therapeutic implications

Area of Science:

• Neuroscience
• Cardiology
• Pharmacology

Background:

• Heart failure (HF) pathophysiology involves detrimental neurohumoral system activation.
• Sympathetic nervous and renin-angiotensin-aldosterone systems are key contributors to HF progression.
• Central nervous system (CNS) pathways play a crucial role in perpetuating this harmful activation.

Purpose of the Study:

• To review the role of CNS pathways in heart failure (HF).
• To explore CNS pathways as potential therapeutic targets for HF.
• To understand how central pathways modulate sympathetic outflow and related factors in HF.

Main Methods:

• Literature review focusing on CNS mechanisms in HF pathophysiology.
• Analysis of neurohumoral and inflammatory pathways regulated by the CNS in HF.
• Discussion of current HF pharmacotherapy versus potential central targets.

Main Results:

• CNS pathways, particularly in the hypothalamus and brainstem, modulate sympathetic activity in HF.
• These central pathways influence key HF-related agents like angiotensin, aldosterone, and cytokines.
• Dysregulation in CNS circuits exacerbates sympathoexcitatory and attenuates sympathoinhibitory pathways in HF.

Conclusions:

• Central nervous system pathways are integral to heart failure pathophysiology.
• Targeting CNS pathways represents a promising novel therapeutic avenue for HF.
• Understanding central mechanisms may lead to more effective HF treatments beyond peripheral antagonism.