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Mitochondria

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,...

Mitochondria

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,...

Electron Transport Chain: Complex I and II

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...

Mitochondrial Membranes

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 Membranes

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,...

The Inner Mitochondrial Membrane

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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Related Experiment Video

Updated: May 24, 2026

Evaluation of Bioenergetic Function in Cerebral Vascular Endothelial Cells

Evaluation of Bioenergetic Function in Cerebral Vascular Endothelial Cells

Published on: November 19, 2016

Mitochondria in vascular disease.

Emma Yu¹, John Mercer, Martin Bennett

¹Division of Cardiovascular Medicine, University of Cambridge, Box 110, Addenbrooke's Hospital, Cambridge CB2 0QQ, UK.

Cardiovascular Research

|March 7, 2012

Summary

This summary is machine-generated.

Mitochondria, vital for cell energy and function, become damaged in aging and cardiovascular diseases like atherosclerosis. This review explores mitochondrial roles, dysfunction, and therapeutic targets in vascular disease.

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Published on: January 19, 2017

Area of Science:

Cellular Biology
Mitochondrial Biology
Cardiovascular Research

Background:

Mitochondria generate ATP, crucial for cellular processes.
Beyond energy, mitochondria regulate reactive oxygen species, calcium, and apoptosis.
Mitochondrial dysfunction is implicated in aging, inflammation, senescence, and apoptosis.

Purpose of the Study:

To review the normal function of mitochondria.
To examine the causes and consequences of mitochondrial dysfunction.
To present evidence linking mitochondrial damage to vascular disease pathology.

Main Methods:

Literature review of mitochondrial biology.
Analysis of studies on mitochondrial dysfunction in aging and disease.
Focus on evidence within cardiovascular disease, specifically atherosclerosis.

Main Results:

Mitochondria play diverse roles beyond ATP production.
Mitochondrial dysfunction contributes to cellular damage observed in aging and atherosclerosis.
Evidence supports mitochondrial damage as a factor in vascular disease pathogenesis.

Conclusions:

Mitochondrial dysfunction is a significant contributor to atherosclerosis.
Understanding mitochondrial roles in vascular disease may reveal new therapeutic strategies.
Targeting mitochondrial pathways offers potential for treating cardiovascular diseases.