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- W1245049408 abstract "Oxidative stress has been implicated in the pathogenesis of many neurodegenerative diseases including Alzheimer’s disease. The transcription factor, Nrf2 (nuclear factor E2-related factor 2) that binds to the antioxidant responsive element (ARE) activates a battery of genes encoding enzymes and factors essential for neuronal survival. We have investigated the hypothesis that a downstream product of cyclooxygenase(COX-2), 15-deoxy-delta (12, 14)-prostagland in J2 (15d-PGJ2) has protective effects by activating the Nrf2 pathway during oxidative stress.Human neuroblastoma cells (SHSY5Y) were differentiated intoneuronal-like cells as described previously (Gimenez-Cassina et al.,2006). SHSY5Y cells were co-treated with 10 mM buthionine sulfoximine (BSO) 7 10 mM 15d-PGJ2. Cell viability was measured by MTT assay and cellular glutathione (GSH) levels were measured after treating cells for0.5-24 hours by GSH recycling assay. Cellular Nrf2 levels were determined by immunoblotting. IL-6 levels were measured by ELISA.15d-PGJ2 alone lowered GSH levels 30min after the treatment(12.870.64 nmol/mg protein) and returned to untreated control levels at 16hours (28.173.6 nmol/mg protein; Po0.01). Compared to intracellular GSH levels in untreated cells (27.871.8 nmol/mg protein) BSO treatment alone significantly decreased GSH (9.672.1 nmol/mg protein;Po0.001) but co-incubation with 15d-PGJ2 for 24 hours prevented the depletion elicited by BSO(21.372.7 nmol/mg protein). Compared to untreated cells BSO treatment decrease dIL-6 secretion (from 0.941.6ng/ml to 0.6971.3ng/ml) and total Nrf2 protein levels (by21%). Co-incubation with15d-PGJ2 for 24 hours with BSO did not change IL-6(0.6771.4ng/ml) or total Nrf2 level at any time point. This study suggests that neuronal toxicity resulting from glutathione depletion canbere stored by the induction of Nrf2-ARE pathway and the role of the Nrf2 signalling merits further investigation in neurodegenerative diseases." @default.
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- W1245049408 date "2015-09-01" @default.
- W1245049408 modified "2023-09-27" @default.
- W1245049408 title "The Nrf2-ARE activation protect neurones against oxidative stress" @default.
- W1245049408 doi "https://doi.org/10.1016/j.freeradbiomed.2015.07.109" @default.
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