Mechanisms and Therapy of Osmotic Demyelination

Takashi Murase, Yoshihisa Sugimura, Seiko Takefuji, Yutaka Oiso, Yoshiharu Murata

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Central pontine myelinolysis (CPM) is a rare but serious demyelinative disease that is associated with rapid correction of chronic hyponatremia. Disruption of the blood-brain barrier (BBB) following a rapid increase in serum sodium concentration is considered to play a critical role in the pathogenesis of osmotic demyelination. We investigated the protective effect of dexamethasone (DEX) on osmotic demyelination in rats. After rapid correction of chronic hyponatremia, rats displayed serious neurologic impairments and demyelinative lesions were observed in various brain regions. Conversely, DEX-treated rats exhibited minimal neurologic impairments and demyelinative lesions were rarely seen in the brain. A marked extravasation of endogenous immunoglobulin G and Evans blue dye were observed in the brains of rats that did not receive DEX, indicating disruption of the BBB, but this was not observed in DEX-treated rats. These results indicate that DEX is effective in preventing osmotic demyelination by inhibiting BBB disruption, and suggest that DEX might be useful for the prevention of CPM in clinical practice.

Original languageEnglish
Pages (from-to)S69-S73
JournalAmerican Journal of Medicine
Volume119
Issue number7 SUPPL. 1
DOIs
Publication statusPublished - 01-07-2006

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Demyelinating Diseases
Dexamethasone
Blood-Brain Barrier
Central Pontine Myelinolysis
Hyponatremia
Nervous System
Brain
Therapeutics
Evans Blue
Coloring Agents
Immunoglobulin G
Sodium
Serum

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Murase, Takashi ; Sugimura, Yoshihisa ; Takefuji, Seiko ; Oiso, Yutaka ; Murata, Yoshiharu. / Mechanisms and Therapy of Osmotic Demyelination. In: American Journal of Medicine. 2006 ; Vol. 119, No. 7 SUPPL. 1. pp. S69-S73.
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Murase, T, Sugimura, Y, Takefuji, S, Oiso, Y & Murata, Y 2006, 'Mechanisms and Therapy of Osmotic Demyelination', American Journal of Medicine, vol. 119, no. 7 SUPPL. 1, pp. S69-S73. https://doi.org/10.1016/j.amjmed.2006.05.010

Mechanisms and Therapy of Osmotic Demyelination. / Murase, Takashi; Sugimura, Yoshihisa; Takefuji, Seiko; Oiso, Yutaka; Murata, Yoshiharu.

In: American Journal of Medicine, Vol. 119, No. 7 SUPPL. 1, 01.07.2006, p. S69-S73.

Research output: Contribution to journalArticle

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