Related Experiment Video

Updated: Aug 22, 2026

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

Impairment of central and peripheral myelin in mitochondrial diseases

B Kalman1, F D Lublin, H Alder

  • 1Department of Neurology, Thomas Jefferson University, Philadelphia, USA.

Multiple Sclerosis (Houndmills, Basingstoke, England)
|January 1, 1997
PubMed

Insights

Mitochondrial (mt)DNA abnormalities can impair central and peripheral myelin due to energy metabolism issues in myelin-producing cells. Inflammatory demyelination also suggests mechanisms beyond simple degeneration in myelin damage.

Area of Science:

  • Neuroscience
  • Genetics
  • Cell Biology

Background:

  • Myelin damage is linked to multisystem disorders and mitochondrial (mt)DNA abnormalities.
  • Mitochondrial defects in oligodendrocytes and Schwann cells can impair myelin production due to suboptimal energy metabolism.
  • Edema, vascular, and toxic factors can directly damage myelin.

Purpose of the Study:

  • To explore the mechanisms underlying myelin damage in the context of mitochondrial (mt)DNA abnormalities.
  • To investigate the role of energy metabolism in myelin production by glial cells.
  • To consider inflammatory processes in demyelination associated with mtDNA mutations.

Main Methods:

  • Review of existing literature on mitochondrial disorders and myelin pathology.
  • Analysis of cellular energy metabolism in oligodendrocytes and Schwann cells.
  • Examination of factors contributing to myelin damage, including inflammation.

Main Results:

  • Suboptimal energy metabolism in glial cells with mitochondrial defects leads to insufficient myelin production.
  • Direct myelin damage can occur from edema, vascular, and toxic insults.
  • Certain mtDNA point mutations are associated with inflammatory demyelination in the central nervous system.

Conclusions:

  • Mitochondrial (mt)DNA abnormalities contribute to myelin impairment through impaired glial energy metabolism.
  • Mechanisms beyond degeneration, including inflammation, are implicated in mtDNA-related demyelination.
  • Understanding these diverse mechanisms is crucial for addressing myelin disorders associated with mitochondrial defects.

More Related Videos

Assessing Mitochondrial Function in Sciatic Nerve by High-Resolution Respirometry08:19

Assessing Mitochondrial Function in Sciatic Nerve by High-Resolution Respirometry

Published on: May 5, 2022

Using Live Cell STED Imaging to Visualize Mitochondrial Inner Membrane Ultrastructure in Neuronal Cell Models08:48

Using Live Cell STED Imaging to Visualize Mitochondrial Inner Membrane Ultrastructure in Neuronal Cell Models

Published on: June 30, 2023

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...
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...
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...