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Nervous Tissue: Myelin01:25

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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.
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Related Experiment Video

Updated: Jan 3, 2026

Preparation and Immunostaining of Myelinating Organotypic Cerebellar Slice Cultures
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Preparation and Immunostaining of Myelinating Organotypic Cerebellar Slice Cultures

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Activity-Dependent Myelination.

Daisuke Kato1, Hiroaki Wake2,3

  • 1Division of System Neuroscience, Kobe University Graduate School of Medicine, Kobe, Japan.

Advances in Experimental Medicine and Biology
|November 25, 2019
PubMed
Summary
This summary is machine-generated.

Oligodendrocytes, the cells forming myelin in the brain, adapt myelination based on neuronal activity. This white matter plasticity is crucial for brain function and behavior.

Keywords:
Glial cellsMyelinationOligodendrocyte progenitor cellsOligodendrocytes

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Organotypic Slice Cultures to Study Oligodendrocyte Dynamics and Myelination
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Organotypic Slice Cultures to Study Oligodendrocyte Dynamics and Myelination

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Neuroimaging

Background:

  • Oligodendrocytes myelinate axons, forming white matter crucial for brain connectivity.
  • White matter signal changes observed in individuals with specialized skills suggest plasticity.
  • This plasticity implies myelination is influenced by neuronal activity.

Purpose of the Study:

  • To review the physiological functions of oligodendrocytes.
  • To highlight activity-dependent myelination.
  • To explore the contribution of oligodendrocytes to brain function and behavior.

Main Methods:

  • Review of existing literature on oligodendrocyte function and white matter plasticity.
  • Analysis of human MRI studies demonstrating white matter changes.
  • Discussion of cellular mechanisms linking neuronal activity to oligodendrocyte behavior.

Main Results:

  • Myelination by oligodendrocytes is plastic and dependent on neuronal activity.
  • White matter plasticity is essential for adapting brain circuits to specific skills and behaviors.
  • Oligodendrocytes and their precursors respond to neuronal signals to modulate myelination.

Conclusions:

  • Oligodendrocytes play a dynamic role in brain function through activity-dependent myelination.
  • White matter plasticity is a key mechanism for learning and behavioral adaptation.
  • Understanding oligodendrocyte function offers new insights into brain plasticity and disorders.