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Lin, Li; Cao, Jie; Yang, Shu‐Sheng; Fu, Zheng‐Qi; Zeng, Peng; Chu, Jiang; Ning, Lin‐Na; Zhang, Teng; Shi, Yan; Tian, Qing; Zhou, Xin‐Wen; Wang, Jian‐Zhi
Journal of Cellular and Molecular Medicine, July 2018, Letnik: 22, Številka: 7Journal Article
Endoplasmic reticulum (ER) stress is involved in Alzheimer's disease (AD), but the mechanism is not fully understood. Here, we injected tunicamycin (TM), a recognized ER stress inducer, into the brain ventricle of Sprague‐Dawley (SD) rats to induce the unfolded protein response (UPR), demonstrated by the enhanced phosphorylation of pancreatic ER kinase (PERK), inositol‐requiring enzyme‐1 (IRE‐1) and activating transcription factor‐6 (ATF‐6). We observed that UPR induced spatial memory deficits and impairments of synaptic plasticity in the rats. After TM treatment, GSK‐3β was activated and phosphorylation of cAMP response element binding protein at Ser129 (pS129‐CREB) was increased with an increased nuclear co‐localization of pY126‐GSK‐3β and pS129‐CREB. Simultaneous inhibition of GSK‐3β by hippocampal infusion of SB216763 (SB) attenuated TM‐induced UPR and spatial memory impairment with restoration of pS129‐CREB and synaptic plasticity. We concluded that UPR induces AD‐like spatial memory deficits with mechanisms involving GSK‐3β/pS129‐CREB pathway.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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