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Related Concept Videos

Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

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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...
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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...
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Heart Failure I: Introduction01:27

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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...
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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...
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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...
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Heart Failure VI: Adjunct Therapies01:22

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Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
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Permanent Ligation of the Left Anterior Descending Coronary Artery in Mice: A Model of Post-myocardial Infarction Remodelling and Heart Failure
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Post-translational Modifications in Heart Failure: Small Changes, Big Impact.

Ahyoung Lee1, Jae Gyun Oh1, Przemek A Gorski1

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Heart, Lung & Circulation
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PubMed
Summary

Small ubiquitin-like modifier (SUMOylation) regulates heart function and is altered in heart failure. Targeting SUMOylation may offer a new therapeutic strategy for treating heart failure.

Keywords:
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Area of Science:

  • Cardiovascular Biology
  • Molecular Cardiology
  • Biochemistry

Background:

  • Heart failure is a global health burden with diverse causes.
  • Post-translational modifications (PTMs) regulate protein function in the heart.
  • Altered PTMs are linked to heart disease pathogenesis.

Purpose of the Study:

  • To review the role of SUMOylation in cardiac function.
  • To highlight SUMOylation's impact on SERCA2a activity.
  • To explore SUMOylation as a therapeutic target for heart failure.

Main Methods:

  • Literature review of SUMOylation in cardiac physiology and pathology.
  • Analysis of SUMOylation's role in regulating SERCA2a.
  • Discussion of therapeutic implications.

Main Results:

  • SUMOylation is crucial for normal cardiac development and function.
  • Dysregulated SUMOylation is a characteristic of heart failure.
  • SUMOylation directly impacts SERCA2a function.

Conclusions:

  • SUMOylation is a key regulatory mechanism in the heart.
  • Abnormal SUMOylation contributes to heart failure.
  • Targeting SUMOylation pathways presents a promising therapeutic avenue for heart failure.