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Related Concept Videos

Mitochondria01:37

Mitochondria

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,...
Mitochondria01:37

Mitochondria

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,...
Mitochondrial Membranes01:45

Mitochondrial Membranes

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,...
Mitochondrial Membranes01:45

Mitochondrial Membranes

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,...
Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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.
ROS generation is regulated and maintained at moderate levels necessary...
The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

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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Updated: May 23, 2026

Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry
06:53

Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry

Published on: November 23, 2011

Mitochondria and cardiovascular aging.

Dao-Fu Dai1, Peter S Rabinovitch, Zoltan Ungvari

  • 1Department of Pathology, University of Washington, Seattle, USA.

Circulation Research
|April 14, 2012
PubMed
Summary
This summary is machine-generated.

Aging significantly impacts cardiovascular health, with mitochondria playing a key role. This review explores mitochondrial dysfunction in cardiac and vascular aging and discusses potential therapeutic interventions to improve mitochondrial function.

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Robust Mitochondrial Isolation from Rodent Cardiac Tissue
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Robust Mitochondrial Isolation from Rodent Cardiac Tissue

Published on: August 23, 2024

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Last Updated: May 23, 2026

Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry
06:53

Visualization of Mitochondrial Respiratory Function using Cytochrome C Oxidase / Succinate Dehydrogenase (COX/SDH) Double-labeling Histochemistry

Published on: November 23, 2011

Robust Mitochondrial Isolation from Rodent Cardiac Tissue
07:03

Robust Mitochondrial Isolation from Rodent Cardiac Tissue

Published on: August 23, 2024

Area of Science:

  • Gerontology
  • Cardiovascular Science
  • Mitochondrial Biology

Background:

  • Old age is a primary risk factor for cardiovascular diseases.
  • Mitochondria are central to lifespan determination and cardiovascular aging.
  • Cardiac and vascular aging share common pathways involving mitochondria and cellular signaling.

Purpose of the Study:

  • To review evidence on the role of mitochondria in cardiac and vascular aging.
  • To discuss the mechanisms of mitochondrial dysfunction in aging.
  • To explore therapeutic strategies targeting mitochondria for cardiovascular aging.

Main Methods:

  • Review of experimental animal models and human age-related cardiac and vascular changes.
  • Analysis of mitochondrial oxidative stress, damage, and biogenesis.
  • Examination of crosstalk between mitochondria and cellular signaling pathways.

Main Results:

  • Mitochondrial dysfunction, oxidative stress, and altered biogenesis contribute to cardiac aging (hypertrophy, fibrosis, diastolic dysfunction) and vascular aging (endothelial dysfunction, reduced elasticity, inflammation).
  • Neurohormonal signaling and cell-autonomous mechanisms are implicated in both cardiac and vascular aging.
  • Age-related changes in murine models closely mimic human cardiac aging.

Conclusions:

  • Mitochondrial health is critical for maintaining cardiovascular function during aging.
  • Therapeutic strategies like mitochondrial-targeted antioxidants, calorie restriction, and exercise show promise in mitigating cardiovascular aging.
  • Further research into mitochondrial interventions could lead to novel treatments for age-related cardiovascular diseases.