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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 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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Autophagy01:27

Autophagy

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Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
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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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Autophagic Cell Death01:18

Autophagic Cell Death

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Christian de Duve discovered “autophagy,” a process in which cellular components are engulfed by membrane-bound organelles called autophagosomes. The autophagosomes then fuse with lysosomes to digest the enclosed contents. Autophagy is generally activated in cells to prevent cell death. However, cell death is triggered when the damage is beyond repair.
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
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Delivery Pathways to the Lysosome01:36

Delivery Pathways to the Lysosome

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Eukaryotic cells use different mechanisms to eliminate toxic waste obsolete and worn-out substances. Lysosomes play a pivotal role in this, and hence, these substances are carried to the lysosome from other parts of the cell and extracellular space through different pathways. The most elaborately studied pathways to the lysosome are the endocytic pathways.
Endocytosis
In endocytosis, the cell membrane takes up macromolecules and particles from the surrounding medium. Clathrin-mediated...
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Related Experiment Video

Updated: Apr 18, 2026

Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome
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Visualizing Mitophagy with Fluorescent Dyes for Mitochondria and Lysosome

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Mitophagy and heart failure.

Sarah E Shires1, Åsa B Gustafsson

  • 1Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, 9500 Gilman Drive MC 0758, La Jolla, CA, 92093-0758, USA.

Journal of Molecular Medicine (Berlin, Germany)
|January 23, 2015
PubMed
Summary
This summary is machine-generated.

Mitophagy, a cellular process removing damaged mitochondria, is vital for heart health. Enhancing mitophagy may offer new treatments for cardiovascular diseases by improving cardiac function.

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In Vitro and In Vivo Detection of Mitophagy in Human Cells, C. Elegans, and Mice
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Area of Science:

  • Cardiovascular Biology
  • Mitochondrial Biology
  • Cellular Quality Control

Background:

  • Cardiac mitochondria generate ATP via oxidative phosphorylation, essential for heart function.
  • Mitochondrial dysfunction contributes to myocyte loss and heart failure.
  • Mitophagy (mitochondrial autophagy) removes damaged mitochondria, maintaining cellular homeostasis.

Purpose of the Study:

  • To review the regulation of mitophagy.
  • To discuss the cardioprotective role of mitophagy.
  • To explore therapeutic strategies targeting mitophagy for cardiovascular disease.

Main Methods:

  • Literature review of mitophagy regulation and function.
  • Analysis of evidence supporting mitophagy's role in cardiac health.
  • Discussion of therapeutic potential.

Main Results:

  • Mitophagy is crucial for removing dysfunctional mitochondria in myocytes.
  • Reduced mitophagy impairs cellular quality control and contributes to heart disease.
  • Emerging evidence highlights mitophagy's cardioprotective effects.

Conclusions:

  • Mitophagy is a key mechanism for maintaining cardiac mitochondrial health.
  • Dysfunctional mitophagy is implicated in the pathogenesis of heart failure.
  • Targeting mitophagy presents a promising therapeutic avenue for cardiovascular diseases.