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pubmed-article:15581620pubmed:abstractTextThe aim of this study was to evaluate the involvement of oxidative stress in glutamate-evoked transglutaminase (TGase) upregulation in astrocyte cultures (14 DIV). A 24 h exposure to glutamate caused a dose-dependent depletion of glutathione intracellular content and increased the ROS production in cell cultures. These effects were receptor-mediated, as demonstrated by inhibition with GYKI 52466. The pre-incubation with glutathione ethyl ester or cysteamine recovered oxidative status and was effective in significantly reducing glutamate-increased tissue TGase. These data suggest that tissue TGase upregulation may be part of a biochemical response to oxidative stress induced by a prolonged exposure of astrocyte cultures to glutamate.lld:pubmed
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pubmed-article:15581620pubmed:articleTitleGlutamate-evoked redox state alterations are involved in tissue transglutaminase upregulation in primary astrocyte cultures.lld:pubmed
pubmed-article:15581620pubmed:affiliationDepartment of Biological Chemistry, Medical Chemistry and Molecular Biology, University of Catania, V.le A. Doria, 6, 95100 Catania, Italy.lld:pubmed
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