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Related Concept Videos

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...
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...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

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...
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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Cardiomyopathy IV: Restrictive Cardiomyopathy

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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Related Experiment Video

Updated: May 25, 2026

Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism
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Published on: September 1, 2014

Cellular mechanisms for diastolic dysfunction in the human heart.

Dániel Czuriga1, Walter J Paulus, István Czuriga

  • 1Division of Clinical Physiology, Institute of Cardiology, University of Debrecen, Medical and Health Science Center, Hungary.

Current Pharmaceutical Biotechnology
|January 28, 2012
PubMed
Summary

Left ventricular diastolic dysfunction, a key factor in cardiovascular diseases, involves impaired relaxation and filling. This review explores the diverse cellular mechanisms underlying diastolic dysfunction across various heart conditions.

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Area of Science:

  • Cardiology
  • Molecular Biology
  • Pathophysiology

Background:

  • Left ventricular (LV) diastolic dysfunction is a significant factor in numerous cardiovascular diseases.
  • It manifests as impaired LV relaxation, filling, or increased stiffness.
  • Diastolic abnormalities are observed in aging hearts, heart failure with preserved ejection fraction (HFPEF), diabetic cardiomyopathy, aortic valve stenosis (AVS), hypertrophic cardiomyopathy (HCM), and Fabry disease (FD).

Purpose of the Study:

  • To review and summarize the cellular and molecular mechanisms contributing to diastolic dysfunction in various cardiovascular pathologies.
  • To elucidate the divergent underlying mechanisms of diastolic deterioration across different cardiac diseases.

Main Methods:

  • Review of existing clinical and experimental studies.
  • Analysis of research on cardiomyocyte function, myofilament changes, extracellular matrix alterations, and advanced glycation end products (AGEs).

Main Results:

  • Cellular and molecular alterations in diastolic dysfunction are not fully characterized across all mentioned cardiac conditions.
  • Studies have investigated cardiomyocyte function, myofilament changes, collagen deposition, and AGE cross-linking.
  • Evidence suggests that the mechanisms of LV diastolic dysfunction vary significantly depending on the specific cardiac pathology.

Conclusions:

  • The underlying mechanisms of left ventricular diastolic dysfunction are diverse and context-dependent.
  • A comprehensive understanding of cellular and molecular alterations is crucial for addressing diastolic dysfunction in various cardiovascular diseases.
  • Further research is needed to fully characterize these mechanisms for targeted therapeutic strategies.