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Related Experiment Videos

Do oligodendrocytes divide?

W T Norton1

  • 1Department of Neurology, Albert Einstein College of Medicine, New York, NY 10461, USA.

Neurochemical Research
|April 1, 1996
PubMed
Summary
This summary is machine-generated.

Remyelination in the adult central nervous system involves new oligodendrocytes. While differentiated oligodendrocytes may rarely divide, glial precursor cells are the likely source of these new cells following demyelinating conditions.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Demyelinating Diseases

Background:

  • Remyelination is a repair process in the central nervous system (CNS) after demyelination, observed in conditions like multiple sclerosis.
  • The generation of new oligodendrocytes is crucial for remyelination.
  • The origin of these new oligodendrocytes, whether from precursor cells or mature cells, is not fully understood.

Purpose of the Study:

  • To review the evidence regarding the source of new oligodendrocytes during CNS remyelination.
  • To evaluate the potential contributions of glial precursor cells and differentiated oligodendrocytes to oligodendrocyte regeneration.
  • To outline future research strategies for definitively identifying the source of new oligodendrocytes.

Main Methods:

  • Review of existing literature on oligodendrocyte regeneration following experimental and natural demyelinating lesions.

Related Experiment Videos

  • Analysis of evidence for oligodendrocyte proliferation and differentiation.
  • Discussion of experimental approaches to trace oligodendrocyte lineage.

    • Main Results:

    • Remyelination is consistently preceded by the appearance of new oligodendrocytes.
    • Evidence suggests that fully differentiated oligodendrocytes can incorporate [3H]thymidine, but this appears to be a rare event.
    • The majority of evidence indicates that glial precursor cells are the primary source of new oligodendrocytes in the adult CNS.

    Conclusions:

    • Glial precursor cells are the most probable source of new oligodendrocytes in the adult CNS during remyelination.
    • Definitive experimental proof for the origin of new oligodendrocytes is still lacking.
    • Further research is needed to elucidate the precise mechanisms of oligodendrocyte regeneration.