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• W2000733667 abstract "Resveratrol is a phytoalexin that confers overall health benefits including positive regulation in brain function such as learning and cognition. However, whether and how resveratrol affects synaptic activity remains largely unknown. α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPARs) are glutamatergic receptors that mediate the majority of fast excitatory transmission and synaptic plasticity, and thus play a critical role in higher brain functions, including learning and memory. We find that in rat primary neurons, resveratrol can rapidly increase AMPAR protein level, AMPAR synaptic accumulation and the strength of excitatory synaptic transmission. The resveratrol effect on AMPAR protein expression is independent of sirtuin 1 (SIRT1), the conventional downstream target of resveratrol, but rather is mediated by AMP-activated protein kinase (AMPK) and subsequent downstream phosphoinositide 3-kinase (PI3K)/Akt signaling. Application of the AMPK specific activator 5-aminoimidazole-4-carboxamide-1-β-d-ribofuranoside (AICAR) mimics the effects of resveratrol on both signaling and AMPAR expression. The resveratrol-induced increase in AMPAR expression results from elevated protein synthesis via regulation of the eukaryotic initiation factor (eIF) 4E/4G complex. Disruption of the translation initiation complex completely blocks resveratrol-dependent AMPAR up-regulation. These findings indicate that resveratrol may regulate brain function through facilitation of AMPAR biogenesis and synaptic transmission." @default.
• W2000733667 created "2016-06-24" @default.
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• W2000733667 date "2015-08-01" @default.
• W2000733667 modified "2023-09-26" @default.
• W2000733667 title "Resveratrol up-regulates AMPA receptor expression via AMP-activated protein kinase-mediated protein translation" @default.
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• W2000733667 doi "https://doi.org/10.1016/j.neuropharm.2015.03.003" @default.
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