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Related Concept Videos

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...
Nervous Tissue: Myelin01:25

Nervous Tissue: Myelin

The myelin sheath is a multilayered lipid and protein covering that insulates the axon of a neuron, enhancing the speed of nerve impulse conduction. Axons without this sheath are referred to as unmyelinated. Two types of neuroglia, Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS) are responsible for producing myelin sheaths.
Schwann cells begin to form myelin sheaths around axons during fetal development. They wrap around a small...
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Related Experiment Video

Updated: Jun 21, 2026

Experimental Demyelination and Remyelination of Murine Spinal Cord by Focal Injection of Lysolecithin
08:57

Experimental Demyelination and Remyelination of Murine Spinal Cord by Focal Injection of Lysolecithin

Published on: March 26, 2015

Remyelination in multiple sclerosis.

Gabrièle Piaton1, Anna Williams, Danielle Seilhean

  • 1UMRS, Inserm 975, CR-Icm, Paris, France. gabiepiaton@gmail.com

Progress in Brain Research
|August 8, 2009
PubMed
Summary
This summary is machine-generated.

Multiple sclerosis repair fails due to insufficient remyelination. Understanding factors inhibiting oligodendrocyte progenitor cells (OPCs) and axonal repair is key to improving myelin regeneration strategies.

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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

Related Experiment Videos

Last Updated: Jun 21, 2026

Experimental Demyelination and Remyelination of Murine Spinal Cord by Focal Injection of Lysolecithin
08:57

Experimental Demyelination and Remyelination of Murine Spinal Cord by Focal Injection of Lysolecithin

Published on: March 26, 2015

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

Area of Science:

  • Neuroscience
  • Regenerative Medicine
  • Demyelinating Diseases

Background:

  • Multiple sclerosis (MS) is characterized by demyelination, leading to progressive neurological deficits.
  • Endogenous remyelination is often insufficient in MS, contributing to irreversible disability.
  • The mechanisms underlying failed myelin repair in MS are not fully understood.

Purpose of the Study:

  • To investigate the multifaceted factors contributing to deficient remyelination in multiple sclerosis.
  • To identify potential therapeutic targets for enhancing myelin repair in MS lesions.

Main Methods:

  • This study reviews existing literature on remyelination failure in MS.
  • Analysis focuses on intrinsic and extrinsic factors affecting oligodendrocyte progenitor cell (OPC) differentiation and function.
  • Consideration of axonal integrity and glial cell recruitment in demyelinated areas.

Main Results:

  • Local inhibitors of OPC differentiation can impede myelin repair.
  • Axonal damage may impair the myelin wrapping process.
  • Defective OPC recruitment to demyelinated lesions contributes to repair failure, particularly in cases of oligodendroglial loss.

Conclusions:

  • Insufficient remyelination in MS results from a complex interplay of factors.
  • Targeting OPC differentiation, axonal support, and cell recruitment may promote endogenous repair.
  • Further research into these mechanisms is crucial for developing effective remyelinating therapies for MS.