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- W1966802267 abstract "Activity-regulated cytoskeletal-associated protein (Arc) and c-Fos are immediate early gene (IEG) products induced by novelty in the hippocampus and involved in the consolidation of synaptic plasticity and long-term memory. We investigated whether induction of arc and c-fos after exposure to a novel open field environment was compromised in different neocortical areas and the hippocampal formation in APP/PS1ΔE9 transgenic mice characterized by pronounced accumulation and deposition of beta amyloid (Aβ). Notably, the basal level of Arc and c-fos mRNA in the neocortex was significantly lower in APP/PS1ΔE9 compared to wild-type mice. Novelty exposure induced an increase in Arc and c-Fos mRNA in the medial prefrontal cortex (mPFC), parietal cortex, and hippocampal formation in both APP/PS1ΔE9 transgenic and wild-type mice. However, novelty-induced IEG expression did not reach the same levels in APP/PS1ΔE9 as in the wild-type mice. In contrast, synaptophysin levels did not differ between mutant and wild type mice, suggesting that the observed effect was not due to a general decrease in the number of presynapses. These data suggest a reduction in basal and novelty-induced neuronal activity in a transgenic mouse model of Alzheimer’s disease, which is most pronounced in cortical regions, indicating that a decreased functional response in IEG expression could be partly responsible for the cognitive deficits observed in patients with Alzheimer’s disease." @default.
- W1966802267 created "2016-06-24" @default.
- W1966802267 creator A5031395961 @default.
- W1966802267 creator A5048704585 @default.
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- W1966802267 date "2013-07-01" @default.
- W1966802267 modified "2023-10-06" @default.
- W1966802267 title "Reduced basal and novelty-induced levels of activity-regulated cytoskeleton associated protein (Arc) and c-Fos mRNA in the cerebral cortex and hippocampus of APPswe/PS1ΔE9 transgenic mice" @default.
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- W1966802267 doi "https://doi.org/10.1016/j.neuint.2013.04.002" @default.
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