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- W2890253307 abstract "Methylmercury (MeHg) is a potent neurotoxin that affects particularly the developing brain. Since MeHg is a potent electrophilic agent, a wide range of intracellular effects occur in response to its exposure. Yet, the molecular mechanisms associated with MeHg-induced cell toxicity have yet to be fully understood. Activation of cell defense mechanisms in response to metal exposure, including the up-regulation of Nrf2- (nuclear factor erythroid 2-related factor 2)-related genes has been previously shown. Nrf2 is a key regulator of cellular defenses against oxidative, electrophilic and environmental stress, regulating the expression of antioxidant proteins, phase-II xenobiotic detoxifying enzymes as well phase-III xenobiotic transporters. Analogous to other electrophiles, MeHg activates Nrf2 through modification of its repressor Keap1 (Kelch-like ECH-associated protein 1). However, recent findings have also revealed that Keap1-independent signal pathways might contribute to MeHg-induced Nrf2 activation and cytoprotective responses against MeHg exposure. These include, Akt phosphorylation (Akt/GSK-3β/Fyn-mediated Nrf2 activation pathway), activation of the PTEN/Akt/CREB pathway and MAPK-induced autophagy and p62 expression. In this review, we summarize the state-of-the-art knowledge regarding Nrf2 up-regulation in response to MeHg exposure, highlighting the modulation of signaling pathways related to Nrf2 activation. The study of these mechanisms is important in evaluating MeHg toxicity in humans, and can contribute to the identification of the molecular mechanisms associated with MeHg exposure." @default.
- W2890253307 created "2018-09-27" @default.
- W2890253307 creator A5013567557 @default.
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- W2890253307 date "2018-09-12" @default.
- W2890253307 modified "2023-10-15" @default.
- W2890253307 title "Molecular Pathways Associated With Methylmercury-Induced Nrf2 Modulation" @default.
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- W2890253307 doi "https://doi.org/10.3389/fgene.2018.00373" @default.
- W2890253307 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6146031" @default.
- W2890253307 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30271424" @default.
- W2890253307 hasPublicationYear "2018" @default.
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