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Related Concept Videos

Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

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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,...
151
Cardiomyopathy I: Introduction and Classification01:25

Cardiomyopathy I: Introduction and Classification

213
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
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Mitochondria01:37

Mitochondria

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

148
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...
148
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

124
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...
124
Cardiomyopathy IV: Restrictive Cardiomyopathy01:29

Cardiomyopathy IV: Restrictive Cardiomyopathy

197
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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Updated: Nov 19, 2025

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
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Mitochondrial Function and Dysfunction in Dilated Cardiomyopathy.

Daniela Ramaccini1,2,3, Vanessa Montoya-Uribe1, Femke J Aan1

  • 1University of Hawaii Cancer Center, Honolulu, HI, United States.

Frontiers in Cell and Developmental Biology
|January 29, 2021
PubMed
Summary
This summary is machine-generated.

Mitochondria are vital for heart energy production. Their dysfunction, including abnormal calcium (Ca2+) handling and communication with the sarcoplasmic reticulum, can lead to dilated cardiomyopathy.

Keywords:
Ca ATPase (SERCA) 2+calciumcardiomyocytescardiomyopathiesheart functionmitochondriaorganoids modelsarcoplasmic reticulum

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Area of Science:

  • Cardiology
  • Mitochondrial Biology
  • Cellular Metabolism

Background:

  • Cardiac function depends on continuous energy supply, primarily generated by mitochondria.
  • Mitochondria regulate cellular energy demands through fusion-fission dynamics and mitophagy.
  • Calcium (Ca2+) fluxes are critical regulators of mitochondrial functions, including ATP production and apoptosis.

Purpose of the Study:

  • To review the role of mitochondrial function and dysfunction in cardiac activity.
  • To explore the impact of mitochondrial dynamics and Ca2+ signaling on heart health.
  • To elucidate the link between mitochondrial abnormalities and the development of dilated cardiomyopathy.

Main Methods:

  • Literature review focusing on mitochondrial biology in the heart.
  • Analysis of studies on mitochondrial dynamics (fusion/fission) and mitophagy.
  • Examination of research on calcium signaling in cardiac mitochondria.

Main Results:

  • Mitochondrial energy production is essential for maintaining cardiac contractility.
  • Mitochondrial fusion-fission, mitophagy, and Ca2+ regulation are key to cardiac homeostasis.
  • Dysfunctional mitochondria impair energy production, contributing to pathological conditions like dilated cardiomyopathy.

Conclusions:

  • Mitochondrial health is indispensable for normal cardiac function.
  • Disruptions in mitochondrial dynamics, Ca2+ handling, and organelle communication precipitate cardiac disease.
  • Understanding these mechanisms offers insights into dilated cardiomyopathy pathogenesis.