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在APOE4载体中的内皮前体细胞和大脑小血管疾病

Arunima Kapoor¹, Shubir Dutt², Amy Nguyen³

¹Department of Psychological Science, University of California, Irvine, Irvine, CA, USA.

Cerebral circulation - cognition and behavior

|March 4, 2025

概括

在携带APOE4基因的个体中,升的内皮原生细胞 (EPCs) 可能会防止早期的脑血管损伤. 较高的EPC计数与减少小血管疾病和白质过强度相关,这表明有保护性血管修复机制.

科学领域:

神经科学是一个神经科学.
血管生物学血管生物学
遗传学遗传学是一个

背景情况:

APOE4基因携带增加了阿尔茨海默病的风险,通常与早期脑血管功能障碍有关.
内皮功能障碍是这种脑血管损伤的潜在触发因素.
内皮原生细胞 (EPC) 对于血管修复和血管生成至关重要.

研究的目的:

调查APOE4载体中高EPC和降低脑小血管疾病负担之间的关联.
为了确定这种关联是否存在于认知衰退开始之前.

主要方法:

招募了109名没有痴呆症的老年人 (平均年龄为70.5岁).
通过脑MRI评估小血管疾病和白质过强度 (WMH) 体积.
通过培养周围血液单核细胞 (PBMC) 和计数殖民地形成单位来量化EPCs.

主要成果:

在APOE4载体中,较高的平均EPC殖民地数量和较低的小血管疾病负载 (p=.026) 之间发现了显著的关联.
较高的EPC数量也与APOE4载体中减少的WMH体积 (p=.002) 相相关.
这些关联在认知能力下降之前的个体中被观察到.

结论:

升高的EPC可能表明APOE4载体中大脑血管功能的保护机制被激活.
在阿尔茨海默病遗传风险较高的人群中,EPC水平可以作为早期血管健康的生物标志物.

关键词:

在APOE4OE4中使用.内皮前代细胞是内皮前代细胞.小船病是小船的疾病.白质的超强度是白质的超强度.

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