High intraocular pressure produces learning and memory impairments in rats

High intraocular pressure produces learning and memory impairments in rats
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高眼压导致大鼠学习和记忆障碍

DOI:
10.1016/j.brainres.2017.09.001
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发表时间:
2017-11
期刊:
影响因子:
2.9
通讯作者:
Zhao Yin
Zhao Yin
中科院分区:
医学3区
文献类型:
--
作者:
Yuan Yuxiang;Chen Zhiqi;Li Lu;Li Xing;Xia Qian;Zhang Hong;Duan Qiming;Zhao Yin

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原发性开角型青光眼(POAG)是世界范围内导致不可逆性失明的主要原因。先前的核磁共振研究表明,POAG可能与海马区功能的改变有关。因此,这项研究的目的是在一个大鼠模型中调查慢性高眼压(IOP)和海马区变化之间的关系。我们使用行为学测试来评估学习和记忆能力,并另外研究了病理性淀粉样β蛋白(Aβ)、磷酸化tau蛋白和相关途径蛋白在海马区的表达。慢性高眼压损害了大鼠的学习记忆,同时通过改变海马区不同蛋白的激活,增加了海马区Aβ和磷酸化tau蛋白的表达。这项研究为高眼压和海马区改变之间的关系提供了新的证据,特别是在学习和记忆的背景下。
Primary open angle glaucoma (POAG) is a leading cause of irreversible blindness worldwide. Previous MRI studies have revealed that POAG can be associated with alterations in hippocampal function. Thus, the aim of this study was to investigate a relationship between chronic high intraocular pressure (IOP) and hippocampal changes in a rat model. We used behavioural tests to assess learning and memory ability, and additionally investigated the hippocampal expression of pathological amyloid beta (Aβ), phospho-tau, and related pathway proteins. Chronic high IOP impaired learning and memory in rats and concurrently increased Aβ and phospho-tau expression in the hippocampus by altering the activation of different kinase (GSK-3β, BACE1) and phosphatase (PP2A) proteins in the hippocampus. This study provides novel evidence for the relationship between high IOP and hippocampal alterations, especially in the context of learning and memory.
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