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- W4308956743 abstract "The mechanism by which synaptic plasticity mediates the occurrence of depression is unknown. Low-density lipoprotein receptor-related protein 1 (LRP1) affects axon growth and neurogenesis in the brain, but its role in depressive-like behaviors is poorly understood.Adeno-associated virus-mediated small interfering RNA was injected into the bilateral hippocampus 14 days before chronic unpredicted mild stress (CUMS). Behavior performance was assessed for depressive-like behaviors. Western blot was conducted to detect levels of LRP1, neurogenesis-related proteins, synaptic markers, microtubule system molecules and Akt/GSK-3β signaling-related proteins. Immunohistochemical staining was performed for LRP1 protein, immunofluorescence staining was conducted to determine the Sox2 protein, Nissl's staining and transmission electron microscope staining were used to observe hippocampal morphological features.The expression of hippocampal LRP1 was positively correlated with depressive-like behaviors. Treatment with iAAV-LRP1 exerted protective effects on depressive-like behaviors. LRP1 Knockdown relieved the inhibition of synaptic plasticity induced by CUMS. Expression of Sox2, GluR2 and SYP was significantly increased in iAAV-LRP1 CUMS rats. LRP1 knockdown reduced the p-tau (Ser262 and Thr404) and Acet-tubule levels in depressed rats. Finally, we found that LRP1 knockdown activated the PI3K/Akt pathway and inhibited GSK-3β signal transduction.More neurogenesis markers would be considered, and stereotactic injection into hippocampal DG region could be performed to investigate the effects of LRP1.These findings indicated that hippocampal LRP1 deficiency in stressed rats plays an important protective role in depressive-like behavior by increasing synaptic plasticity mediated by microtubule dynamic and activating Akt/GSK-3β signaling pathway. Therefore, LRP1 may represent a potential therapeutic target for depression." @default.
- W4308956743 created "2022-11-20" @default.
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- W4308956743 date "2023-02-01" @default.
- W4308956743 modified "2023-10-05" @default.
- W4308956743 title "The protective role of hippocampal LRP1 knockdown involves synaptic plasticity through the promoting microtubule dynamics and activation of Akt/GSK-3β pathway in depressive rats" @default.
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- W4308956743 doi "https://doi.org/10.1016/j.jad.2022.11.018" @default.
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