APOE genotype and sex modulate Alzheimer's disease pathology in aged EFAD transgenic mice.

APOE genotype and sex modulate Alzheimer's disease pathology in aged EFAD transgenic mice.
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DOI:
10.3389/fnagi.2023.1279343
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发表时间:
2023
影响因子:
4.8
通讯作者:
--
中科院分区:
医学2区
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--
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越来越多的证据支持年龄、载脂蛋白E和性别相互作用调节阿尔茨海默病(AD)风险,但潜在的途径尚不清楚。AD危险因素可能调节认知的一种方式是通过影响斑块形式的淀粉样β蛋白(Aβ)积聚和/或神经炎症。因此,本研究的目的是评估年龄、载脂蛋白E和性别在体内对Aβ病理、神经炎症和行为的调节程度。为了实现这一目标,我们利用了EFAD小鼠,这些小鼠表达人类载脂蛋白3或载脂蛋白4,并有五个家族性AD突变(FAD),导致Aβ42过量生产。我们评估了6个月、10个月、14个月和18个月大的EFAD小鼠的Aβ水平、反应性胶质细胞和莫里斯水迷宫的表现。雌性载脂蛋白4小鼠的Aβ沉积、纤维淀粉样蛋白沉积和神经炎症以及早期行为缺陷最高。有趣的是,我们发现雌性APOE3小鼠和雄性APOE4小鼠具有相似的病理水平。总体而言,我们的数据支持APOE4和女性的结合是对AD最有害的组合,在较年长的年龄,女性可能相当于APOE4基因。
Increasing evidence supports that age, APOE and sex interact to modulate Alzheimer’s disease (AD) risk, however the underlying pathways are unclear. One way that AD risk factors may modulate cognition is by impacting amyloid beta (Aβ) accumulation as plaques, and/or neuroinflammation Therefore, the goal of the present study was to evaluate the extent to which age, APOE and sex modulate Aβ pathology, neuroinflammation and behavior in vivo. To achieve this goal, we utilized the EFAD mice, which express human APOE3 or APOE4 and have five familial AD mutations (FAD) that result in Aβ42 overproduction. We assessed Aβ levels, reactive glia and Morris water maze performance in 6-, 10-, 14-, and 18-month-old EFAD mice. Female APOE4 mice had the highest Aβ deposition, fibrillar amyloid deposits and neuroinflammation as well as earlier behavior deficits. Interestingly, we found that female APOE3 mice and male APOE4 mice had similar levels of pathology. Collectively our data support that the combination of APOE4 and female sex is the most detrimental combination for AD, and that at older ages, female sex may be equivalent to APOE4 genotype.
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发表时间: 2022
影响因子: 4.8
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发表时间: 2021
期刊: Journal of Alzheimer's disease : JAD
影响因子: --
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发表时间: 2020-11-04
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影响因子: --
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