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Related Concept Videos

Animal Mitochondrial Genetics02:59

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...
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,...
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...
ATP Synthase: Mechanism01:48

ATP Synthase: Mechanism

In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased ATP...
Therapeutic Drug Monitoring: Affecting Factors01:29

Therapeutic Drug Monitoring: Affecting Factors

Therapeutic Drug Monitoring (TDM) is the clinical practice of measuring specific drug levels in a patient's blood or body tissues to manage and optimize therapy. TDM is crucial for drugs with narrow therapeutic windows, like warfarin and phenytoin, where incorrect doses can lead to treatment failure or severe side effects. This monitoring ensures the dosage administered is within a safe and effective range. The factors affecting therapeutic drug monitoring include:Patient-Specific Factors:a.

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Related Experiment Video

Updated: Jun 12, 2026

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle
09:40

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

Published on: January 19, 2017

Mitochondrial diseases: therapeutic approaches.

Salvatore DiMauro1, Michelangelo Mancuso

  • 1College of Physicians and Surgeons, Department of Neurology, Columbia University Medical Center, NewYork, NY 10032, USA. sd12@columbia.edu

Bioscience Reports
|May 9, 2007
PubMed
Summary

Current mitochondrial encephalomyopathy treatments are insufficient. This review explores palliative care, metabolite removal, cofactor administration, exercise, and emerging gene therapies for these complex genetic disorders.

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Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes
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Last Updated: Jun 12, 2026

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Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes
08:56

Modeling Mitochondrial Disease Using Brain Organoids: A Focus on Mitochondrial Encephalomyopathy, Lactic Acidosis, and Stroke-like Episodes

Published on: October 10, 2025

Area of Science:

  • Mitochondrial Medicine
  • Neurogenetics
  • Biochemistry

Background:

  • Mitochondrial encephalomyopathies, stemming from mitochondrial respiratory chain defects, lack adequate therapies despite advances in understanding.
  • Effective treatments are crucial for improving patient outcomes and quality of life.

Purpose of the Study:

  • To review and analyze diverse therapeutic strategies for mitochondrial encephalomyopathies.
  • To highlight current limitations and future directions in treating these disorders.

Main Methods:

  • Review of existing literature on palliative care, metabolite management, and cofactor/antioxidant administration.
  • Exploration of exercise physiology and physical therapy benefits for mitochondrial myopathies.
  • Analysis of experimental gene therapy approaches, including gene shifting, allotopic expression, and gene correction.
  • Discussion of preventive strategies like genetic counseling and prenatal diagnosis.

Main Results:

  • Palliative care, metabolite control, and cofactor/metabolite administration (e.g., carnitine, coenzyme Q10) form the current therapeutic mainstay.
  • Aerobic exercise and physical therapy show promise in improving exercise tolerance and mitigating deconditioning.
  • Gene therapy presents challenges due to mitochondrial DNA (mtDNA) heteroplasmy but offers innovative experimental avenues.
  • Preventive measures like genetic counseling are vital for nuclear DNA-related disorders.

Conclusions:

  • While current therapies offer limited success, a combination of approaches including palliative care, metabolite management, and exercise can improve patient well-being.
  • Gene therapy holds significant future potential, with ongoing research addressing challenges like heteroplasmy.
  • Preventive strategies are essential for managing inherited mitochondrial disorders.