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- W2419668212 abstract "Studies showed that histone deacetylase (HDAC) inhibitors can reverse cognitive deficits found in neurodegenerative disorders and age-related memory decline. However, the role of HDACs in stress-induced cognitive deficits has not been investigated. In the stress-susceptible mouse strain Balb/c, early life stress triggers a persistent decrease in HDAC expression in the forebrain neocortex, including reduced expression of class I HDACs. The same mice show pronounced cognitive deficits in adulthood, namely deficits in working memory and attention set-shifting. Here we show that these mice also exhibit reduced association of HDAC1 with promotor III of the brain-derived neurotrophic factor (Bdnf) gene, and that cognitive testing leads to abnormally increased Bdnf mRNA expression. A pharmacological reduction of Bdnf-tropomyosine kinase B receptor signaling effectively reverses the cognitive deficits, indicating that enhanced transcriptional activation of the Bdnf gene contributes to their emergence. In contrast to Balb/c mice, C57Bl/6 mice only develop attention set-shifting deficits when raised by Balb/c foster mothers during the time the pups are exposed to early life stress. HDAC1 levels at Bdnf promotor III are unaltered in such C57Bl/6 mice, although they exhibit decreased levels of HDAC1 at the promotor of the early-growth response gene 2 (Egr2) and abnormally increased Egr2 mRNA expression after cognitive testing. Hence, contrary to the beneficial effects of HDAC inhibition in neurodegenerative diseases, the reduced HDAC1 levels at promotors of distinct plasticity-associated genes predispose animals exposed to early life stress to enhanced expression of these genes upon cognitive challenge, an effect that negatively influences cognitive task performance." @default.
- W2419668212 created "2016-06-24" @default.
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- W2419668212 date "2016-10-01" @default.
- W2419668212 modified "2023-09-27" @default.
- W2419668212 title "Cognitive deficits triggered by early life stress: The role of histone deacetylase 1" @default.
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- W2419668212 doi "https://doi.org/10.1016/j.nbd.2016.05.018" @default.
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