Is AMPK the savior of the failing heart?

Ty T Kim1, Jason R B Dyck1

  • 1Cardiovascular Research Centre, Mazankowski Alberta Heart Institute, Department of Pediatrics, Faculty of Medicine and Dentistry, 458 Heritage Medical Research Centre, University of Alberta, Edmonton, AB, T6G 2S2, Canada.

Insights

Heart failure (HF) involves metabolic defects impacting ATP production. AMP-activated protein kinase (AMPK) plays a crucial role in regulating myocardial metabolism during HF progression.

Area of Science:

  • Cardiology
  • Molecular Biology
  • Biochemistry

Background:

  • Heart failure (HF) is a major global health issue, responsible for millions of deaths.
  • Pathophysiological and molecular changes significantly contribute to HF development and progression.
  • Defects in myocardial energy metabolism, crucial for ATP production and contractile function, are implicated in HF pathogenesis.

Purpose of the Study:

  • To review metabolic alterations in HF.
  • To examine the role of energy metabolism changes in HF progression.
  • To explore the involvement of AMP-activated protein kinase (AMPK) in HF metabolism.

Main Methods:

  • Literature review of studies on HF metabolism.
  • Analysis of the role of energy metabolism in HF.
  • Focus on AMP-activated protein kinase (AMPK) pathways.

Main Results:

  • Myocardial metabolic dysfunction is a key factor in HF.
  • Altered energy metabolism contributes to the worsening of HF.
  • AMPK is a central regulator of myocardial metabolism in the context of HF.

Conclusions:

  • Metabolic changes are critical in HF.
  • AMPK is a significant target for understanding and potentially treating HF.
  • Further research into metabolic pathways in HF is warranted.

Related Concept Videos

Heart Failure I: Introduction01:27

Heart Failure I: Introduction

Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
1.4K
Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
4.8K
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
1.5K
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
1.6K
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation,...
1.2K
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
594