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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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Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
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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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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
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Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
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Myocardial reverse remodeling: how far can we rewind?

Patrícia G Rodrigues1, Adelino F Leite-Moreira1, Inês Falcão-Pires2

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PubMed
Summary

Reverse remodeling in heart failure with preserved ejection fraction (HFpEF) is complex. New research explores HFpEF myocardial remodeling and reverse remodeling (RR) targets, contrasting them with heart failure with reduced ejection fraction (HFrEF).

Keywords:
diastolic dysfunctionheart failure with preserved ejection fractionheart failure with reduced ejection fractionleft ventricle hypertrophymyocardial reverse remodeling

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Area of Science:

  • Cardiology
  • Molecular Biology
  • Translational Medicine

Background:

  • Heart failure (HF) presents as HF with reduced ejection fraction (HFrEF) and HF with preserved ejection fraction (HFpEF).
  • HFpEF constitutes over 50% of HF cases and is linked to comorbidities like hypertension, diabetes, and obesity.
  • Myocardial remodeling, involving structural and molecular changes, occurs in both HFrEF and HFpEF, impacting cardiac function.

Purpose of the Study:

  • To review recent research on myocardial remodeling in HFpEF.
  • To provide an overview of reverse remodeling (RR) features in HFpEF.
  • To compare HFpEF remodeling and RR with HFrEF conditions.

Main Methods:

  • Review of translational and clinical research on HFpEF myocardial remodeling.
  • Analysis of molecular and signaling pathways involved in HFpEF remodeling.
  • Comparative study of remodeling processes in HFpEF versus HFrEF.

Main Results:

  • Myocardial remodeling is a key feature in both HFrEF and HFpEF.
  • Reverse remodeling (RR) research is more established in HFrEF than in HFpEF.
  • New therapeutic targets for HFpEF remodeling and RR are under investigation.

Conclusions:

  • Understanding HFpEF myocardial remodeling is crucial for developing effective therapies.
  • The pathophysiology of HFpEF remodeling and RR requires further elucidation.
  • Targeting novel proteins and pathways holds promise for HFpEF treatment.