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Related Concept Videos

Ischemic Heart Disease: Overview01:17

Ischemic Heart Disease: Overview

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Ischemic heart disease occurs when the heart's blood supply dwindles, causing an ominous lack of oxygen and nutrients. This deficiency, stemming from reduced or obstructed blood flow, spells danger, leading to heart muscle damage and dysfunction.
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Myocarditis I: Introduction01:21

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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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The Inner Mitochondrial Membrane01:28

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The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
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Mitochondria01:37

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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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Related Experiment Video

Updated: Mar 1, 2026

Author Spotlight: Uncovering the Role of Mitochondrial Calcium Phosphate in Heart Failure and Bioenergetics
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Mitochondria in Ischemic Heart Disease.

L Maximilian Buja1

  • 1McGovern Medical School, The University of Texas Health Science Center at Houston (UTHealth), Houston, TX, USA. l.maximilian.buja@uth.tmc.edu.

Advances in Experimental Medicine and Biology
|May 29, 2017
PubMed
Summary

Ischemic heart disease injures cardiomyocytes (CMC) via necrosis, necroptosis, apoptosis, and autophagy. Research explores pharmacological methods to preserve mitochondrial integrity and promote CMC survival during ischemia.

Keywords:
CardiomyocytesConditioningMitochondriaMitochondrial outer membrane permeabilization (MOMP)Mitochondrial permeability transition pore (mPTP)Myocardial ischemiaReperfusion

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Area of Science:

  • Cardiology
  • Cell Biology
  • Mitochondrial Medicine

Background:

  • Ischemic heart disease causes cardiomyocyte (CMC) injury and death through multiple pathways.
  • Mitochondria play a critical role in mediating CMC injury via 'death channels'.
  • Reperfusion and conditioning are key modulators of ischemic injury.

Purpose of the Study:

  • To investigate the molecular mechanisms of CMC injury during ischemia.
  • To explore the role of mitochondria in mediating ischemic damage.
  • To identify pharmacological strategies for preserving mitochondrial integrity and promoting CMC survival.

Main Methods:

  • Analysis of molecular mechanisms of cell death in ischemic CMC.
  • Investigation of mitochondrial pathways, including apoptosis (Bcl-2, MOMP) and oncotic necrosis (mPTP).
  • Exploration of the reperfusion salvage kinase (RISK) pathway and pharmacological interventions like cyclosporine A.

Main Results:

  • Ischemic CMC undergo oncotic necrosis, necroptosis, apoptosis, and unregulated autophagy.
  • Mitochondrial outer membrane permeabilization (MOMP) and mitochondrial permeability transition pore (mPTP) opening are key events in CMC death.
  • The RISK pathway is involved in CMC survival during reperfusion.

Conclusions:

  • Understanding the mechanisms of mitochondrial-mediated CMC injury is crucial for treating ischemic heart disease.
  • Pharmacological approaches targeting mitochondrial integrity hold promise for promoting CMC survival.
  • Cyclosporine A serves as a prototype for developing novel therapeutic strategies.