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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,...

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...

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,...

Animal Mitochondrial Genetics

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...

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Related Experiment Video

Updated: Jun 24, 2026

Robust Mitochondrial Isolation from Rodent Cardiac Tissue

Robust Mitochondrial Isolation from Rodent Cardiac Tissue

Published on: August 23, 2024

Mitochondria in the human heart.

H Lemieux¹, C L Hoppel

¹Center for Mitochondrial Disease, Department of Pharmacology and Medicine, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA. helene.lemieux@case.edu

Journal of Bioenergetics and Biomembranes

|April 9, 2009

Summary

Understanding human heart mitochondrial function is crucial for treating cardiac diseases. This review evaluates methods, disease roles, and therapeutic applications of mitochondrial insights in cardiovascular medicine.

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Area of Science:

Biochemistry
Cardiology
Mitochondrial Biology

Background:

The human heart depends on mitochondrial metabolism for energy production.
Studying human heart mitochondria is challenging, often relying on animal models.
Cardiac diseases are a leading global cause of death.

Purpose of the Study:

To review methods for assessing human heart mitochondrial function, focusing on integrated function.
To examine the role of mitochondrial dysfunction in cardiovascular diseases.
To explore potential therapeutic applications of this knowledge in cardiac patient care.

Main Methods:

Literature review of studies on human cardiac mitochondrial function.
Analysis of data linking mitochondrial dysfunction to cardiovascular disease.
Evaluation of emerging therapeutic strategies targeting cardiac metabolism.

Main Results:

Mitochondrial dysfunction is implicated in various cardiovascular conditions.
Specific methods are highlighted for studying integrated mitochondrial function in the human heart.
Knowledge gaps exist in translating mitochondrial research to clinical practice.

Conclusions:

A deeper understanding of human heart mitochondrial function is essential for advancing cardiovascular medicine.
Targeting mitochondrial pathways offers potential for novel cardiac disease therapies.
Further research is needed to bridge the gap between basic science and clinical application.