PMID- 34916926 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20211218 IS - 1663-4365 (Print) IS - 1663-4365 (Electronic) IS - 1663-4365 (Linking) VI - 13 DP - 2021 TI - Deficits in N-Methyl-D-Aspartate Receptor Function and Synaptic Plasticity in Hippocampal CA1 in APP/PS1 Mouse Model of Alzheimer's Disease. PG - 772980 LID - 10.3389/fnagi.2021.772980 [doi] LID - 772980 AB - The N-methyl-D-aspartate receptor is a critical molecule for synaptic plasticity and cognitive function. Impaired synaptic plasticity is thought to contribute to the cognitive impairment associated with Alzheimer's disease (AD). However, the neuropathophysiological alterations of N-methyl-D-aspartate receptor (NMDAR) function and synaptic plasticity in hippocampal CA1 in transgenic rodent models of AD are still unclear. In the present study, APP/PS1 mice were utilized as a transgenic model of AD, which exhibited progressive cognitive impairment including defective working memory, recognition memory, and spatial memory starting at 6 months of age and more severe by 8 months of age. We found an impaired long-term potentiation (LTP) and reduced NMDAR-mediated spontaneous excitatory postsynaptic currents (sEPSCs) in the hippocampal CA1 of APP/PS1 mice with 8 months of age. Golgi staining revealed that dendrites of pyramidal neurons had shorter length, fewer intersections, and lower spine density in APP/PS1 mice compared to control mice. Further, the reduced expression levels of NMDAR subunits, PSD95 and SNAP25 were observed in the hippocampus of APP/PS1 mice. These results suggest that NMDAR dysfunction, impaired synaptic plasticity, and disrupted neuronal morphology constitute an important part of the neuropathophysiological alterations associated with cognitive impairment in APP/PS1 mice. CI - Copyright (c) 2021 Xu, Zhou, Hu, Jiang, Dong, Shen, Lou, Yang, Ji, Ruan and Zhang. FAU - Xu, Le AU - Xu L AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. AD - Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, China. FAU - Zhou, Yiying AU - Zhou Y AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. AD - Key Laboratory of Addiction Research of Zhejiang Province, Ningbo Kangning Hospital, Ningbo, China. FAU - Hu, Linbo AU - Hu L AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. FAU - Jiang, Hongde AU - Jiang H AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. FAU - Dong, Yibei AU - Dong Y AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. FAU - Shen, Haowei AU - Shen H AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. AD - Key Laboratory of Addiction Research of Zhejiang Province, Ningbo Kangning Hospital, Ningbo, China. FAU - Lou, Zhongze AU - Lou Z AD - Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, China. AD - Central Laboratory of the Medical Research Center, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, China. FAU - Yang, Siyu AU - Yang S AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. FAU - Ji, Yunxin AU - Ji Y AD - Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, China. FAU - Ruan, Liemin AU - Ruan L AD - Department of Psychosomatic Medicine, Ningbo First Hospital, Ningbo Hospital of Zhejiang University, Ningbo, China. FAU - Zhang, Xiaoqin AU - Zhang X AD - Zhejiang Key Laboratory of Pathophysiology, Department of Pharmacology, School of Medicine, Ningbo University, Ningbo, China. AD - Key Laboratory of Addiction Research of Zhejiang Province, Ningbo Kangning Hospital, Ningbo, China. LA - eng PT - Journal Article DEP - 20211130 PL - Switzerland TA - Front Aging Neurosci JT - Frontiers in aging neuroscience JID - 101525824 PMC - PMC8669806 OTO - NOTNLM OT - Alzheimer's disease OT - NMDAR OT - cognitive behavior OT - dendritic morphology OT - synaptic plasticity COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/12/18 06:00 MHDA- 2021/12/18 06:01 PMCR- 2021/01/01 CRDT- 2021/12/17 06:52 PHST- 2021/09/09 00:00 [received] PHST- 2021/10/29 00:00 [accepted] PHST- 2021/12/17 06:52 [entrez] PHST- 2021/12/18 06:00 [pubmed] PHST- 2021/12/18 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fnagi.2021.772980 [doi] PST - epublish SO - Front Aging Neurosci. 2021 Nov 30;13:772980. doi: 10.3389/fnagi.2021.772980. eCollection 2021.