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- W4283794290 abstract "Peroxiredoxin 4 (Prdx4) is responsible for the oxidative folding of new proteins that are synthesized in the endoplasmic reticulum (ER). It has recently been suggested that increased ER stress is associated with neurodegenerative diseases, including Alzheimer's disease. Prdx4 is widely distributed throughout the brain, and is also expressed in hippocampal neurons and oligodendrocytes, suggesting that it is associated with learning and memory. We previously established Prdx4-knockout (KO) mice but did not examine the behavioral phenotypes. In the present study, we report on the learning and memory abilities of Prdx4-KO mice based on Morris water maze and the Y-maze tests. The findings indicate that Prdx4-KO mice showed a lower spatial memory ability in both tests. In contrast, the results of the open field test indicated that locomotor activity is significantly increased in Prdx4-KO mice. We then performed mRNA analyses of the brains of Prdx4-KO mice and found an increased expression of genes related to the ER-associated degradation (ERAD) mechanism, which is an important protein quality control system for the maintenance of ER homeostasis. Finally, proteomic analyses of the brains of Prdx4-KO mice showed an aberrant expression in the proteins, which have been suggested to be related to calcium homeostasis and synaptogenesis in neurons. Our collective results suggest that the Prdx4 ablation perturbs oxidative protein folding in the ER, thus leading to aberrant ER homeostasis in neuronal cells, ultimately leading to impaired spatial memory formation." @default.
- W4283794290 created "2022-07-05" @default.
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- W4283794290 date "2022-09-01" @default.
- W4283794290 modified "2023-09-29" @default.
- W4283794290 title "Consequences of a peroxiredoxin 4 (Prdx4) deficiency on learning and memory in mice" @default.
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- W4283794290 doi "https://doi.org/10.1016/j.bbrc.2022.06.096" @default.
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