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Related Concept Videos

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

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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 II: Pathophysiology01:29

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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 I: Introduction01:27

Heart Failure I: Introduction

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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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Heart Failure IV: Classification and Diagnostic Evaluation01:30

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Heart failure can be classified in various ways, with the most common classifications based on physical activity limitations, disease progression, severity, and treatment strategies.The Functional Classification of Heart Failure divides patients into four categories based on physical activity limitation due to symptom burden.Class I: Patients in this class have cardiac disease but no physical activity limitations. Ordinary activities like walking, climbing stairs, or routine tasks do not cause...
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Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

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Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

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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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Related Experiment Video

Updated: Apr 12, 2026

Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
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Heart failure: advanced development in genetics and epigenetics.

Jian Yang1, Wei-Wei Xu1, Shen-Jiang Hu1

  • 1Department of Cardiology, The First Affiliated Hospital, College of Medicine, Zhejiang University, No. 79, Qing-Chun Road, Hangzhou 310003, China.

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Genetic mutations and epigenetic factors, such as microRNA, play key roles in heart failure (HF) development. Understanding these genetic and epigenetic mechanisms can guide personalized HF therapies and surveillance strategies.

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Area of Science:

  • Cardiology
  • Genetics
  • Epigenetics

Background:

  • Heart failure (HF) is a complex syndrome resulting from impaired cardiac function.
  • Genetic mutations in cardiomyopathies are linked to various HF pathologies.
  • Epigenetic mechanisms, including chromatin remodeling and DNA methylation, are implicated in HF.

Purpose of the Study:

  • To review genetic mutations associated with cardiomyopathy.
  • To explore the role of epigenetic mechanisms in heart failure.
  • To highlight the potential of genetic screening for individualized HF therapies.

Main Methods:

  • Literature review of genetic mutations in familial dilated cardiomyopathy, hypertrophic cardiomyopathy, and arrhythmogenic right ventricular cardiomyopathy.
  • Overview of epigenetic mechanisms: ATP-dependent chromatin remodeling, DNA methylation, histone modification, and RNA-based mechanisms.
  • Focus on microRNA's role in heart failure research.

Main Results:

  • Specific genetic mutations contribute to diverse cardiomyopathy pathologies.
  • Epigenetic modifications are crucial regulatory pathways in HF.
  • MicroRNAs are significant factors in the pathophysiology of HF.

Conclusions:

  • Genetic screening offers a pathway for personalized HF treatment and monitoring.
  • Epigenetic factors, particularly microRNAs, are critical targets for future HF research.
  • Integrating genetic and epigenetic insights is vital for advancing heart failure management.