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Non-invasive Assessment of the Efficacy of New Therapeutics for Intestinal Pathologies Using Serial Endoscopic Imaging of Live Mice
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Pathological changes in mice with long term cuprizone administration.

Taichi Nomura1, Yoshio Bando2, Hitomi Nakazawa1

  • 1Department of Functional Anatomy and Neuroscience, Asahikawa Medical University, Midorigaoka-higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan.

Neurochemistry International
|April 4, 2019
PubMed
Summary
This summary is machine-generated.

Long-term demyelination in the central nervous system (CNS) caused reversible motor dysfunction in mice. Changes in parvalbumin distribution suggest a protective role in demyelinated axons.

Keywords:
CuprizoneDemyelinationMultiple sclerosisParvalbuminStriatum

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Area of Science:

  • Neuroscience
  • Neuroimmunology
  • Pathology

Background:

  • Multiple sclerosis (MS) involves central nervous system (CNS) inflammation and demyelination.
  • Sustained demyelination is linked to disease progression and neuronal exhaustion, but neuronal pathology remains unclear.
  • The cuprizone mouse model allows for sustained demyelination studies.

Purpose of the Study:

  • To investigate neuronal pathological changes in mice with long-term, sustained demyelination.
  • To explore the functional consequences and potential recovery mechanisms following demyelination.

Main Methods:

  • Mice received cuprizone for up to 34 weeks to induce sustained demyelination.
  • Myelin basic protein immunohistochemistry assessed demyelination.
  • Neuronal changes, parvalbumin (PV) distribution, and motor coordination were evaluated.
  • Remyelination and functional recovery were assessed after cuprizone withdrawal.

Main Results:

  • Sustained demyelination was confirmed up to 34 weeks in specific CNS regions.
  • No neuronal loss was observed, but parvalbumin distribution changed in demyelinated areas.
  • Mice exhibited reversible motor coordination deficits.
  • Withdrawal from cuprizone led to remyelination and functional recovery.

Conclusions:

  • Long-term cuprizone administration induces sustained demyelination and reversible motor dysfunction.
  • Altered parvalbumin distribution may indicate a protective role in demyelinated axons.
  • This model is valuable for studying demyelination-induced pathology and behavior in the CNS.