Alpha-lipoic acid mitigates toxic-induced demyelination in the corpus callosum by lessening of oxidative stress and stimulation of polydendrocytes proliferation

Sanadgol, N. and Golab, F. and Askari, H. and Moradi, F. and Ajdary, M. and Mehdizadeh, M. (2018) Alpha-lipoic acid mitigates toxic-induced demyelination in the corpus callosum by lessening of oxidative stress and stimulation of polydendrocytes proliferation. Metabolic Brain Disease, 33 (1). pp. 27-37.

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Abstract

Multiple Sclerosis (MS), is a disease that degenerates myelin in central nervous system (CNS). Reactive oxygen species (ROSs) are toxic metabolites, and accumulating data indicate that ROSs-mediated apoptosis of oligodendrocytes (OLGs) plays a major role in the pathogenesis of MS under oxidative stress conditions. In this study, we investigated the role of endogenous antioxidant alpha-lipoic acid (ALA) as ROSs scavenger in the OLGs loss and myelin degeneration during cuprizone (cup)-induced demyelination in the experimental model of MS. Our results have shown that ALA treatment significantly increased population of mature OLGs (MOG+ cells), as well as decreased oxidative stress (ROSs, COX-2 and PGE2) and apoptosis mediators (caspase-3 and Bax/Bcl2 ratio) in corpus callosum (CC). Surprisingly, ALA significantly stimulates population of NG2 chondroitin sulfate proteoglycan positive glia (NG2+ cells or polydendrocytes), from week 4 afterward. Accordingly ALA could prevents apoptosis, delays demyelination and recruits OLGs survival and regeneration mechanisms in CC. We conclude that ALA has protective effects against toxic demyelination via reduction of redox signaling, and alleviation of polydendrocytes vulnerability to excitotoxic challenge. © 2017, Springer Science+Business Media, LLC.

Item Type: Article
Additional Information: cited By 2
Uncontrolled Keywords: beta actin; caspase 3; cuprizone; cyclooxygenase 2; myelin; prostaglandin E2; protein Bax; protein bcl 2; proteochondroitin sulfate; reactive oxygen metabolite; thioctic acid, animal cell; animal experiment; animal model; apoptosis; Article; cell loss; cell proliferation; cell regeneration; cell stimulation; cell survival; controlled study; corpus callosum; cuprizone-induced demyelination; drug activity; drug megadose; excitotoxicity; gliosis; immunohistochemistry; male; mouse; multiple sclerosis; neuroprotection; nonhuman; oligodendrocyte precursor cell; oxidation reduction reaction; oxidative stress; protein expression; signal transduction
Subjects: QV Pharmacology
Depositing User: eprints admin
Date Deposited: 01 Jan 2019 12:32
Last Modified: 24 Aug 2019 08:11
URI: http://eprints.iums.ac.ir/id/eprint/5958

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