从老年严重阻塞性睡眠呼吸暂停患者的血清中"选择"的外体和它们对血脑屏障功能的影响:初步报告
Pauline Guillot1,2,3, Sebastien Celle2,4, Nathalie Barth1,5
1Gérontopôle AURA, 42000 Saint-Etienne, France.
International journal of molecular sciences
|October 26, 2024
概括
阻塞性睡眠呼吸暂停综合征 (OSAS) 释放出更多含有和粉样蛋白β的脑衍生外体. 这些外体增加了血脑屏障的透性,可能导致OSAS患者的认知能力下降.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 老年学是一门学科.
背景情况:
- 阻塞性睡眠呼吸暂停综合征 (OSAS) 在老年人群中很普遍,并且与神经认知缺陷有关.
- 在OSAS中慢性间歇性缺氧可能会改变血脑屏障 (BBB) 功能.
- 外体,体液中的纳米,被假设为介导BBB变化.
研究的目的:
- 研究外体作为OSAS和相关认知障碍的潜在生物标志物.
- 为了确定OSAS患者的外体是否会影响BBB完整性.
- 在OSAS中的外体体内量化tau和粉样β (Aβ).
主要方法:
- 从严重的OSAS患者 (AHI> 30) 和对照组 (AHI < 5) 收集的血清.
- 使用西部斑块和ELISAs分离和表征外体 (CD81,CD9,CD63).使用西部斑块和ELISAs.
- 在体外模型中评估BBB透性和紧结蛋白表达 (ZO-1,Claudin-5,Occludin) 暴露于患者外体.
- 通过ELISA通过外体体内的量化和Aβ水平.
主要成果:
- 与对照组相比,OSAS患者表现出较高的血清外体度,包括tau和Aβ.
- 来自OSAS患者的外体显著增加了BBB的透性,并在体外减少了紧结蛋白的表达.
- 老年严重的OSAS患者释放出更多的大脑衍生的外体,与增加的BBB透性相关.
结论:
- 血清外体中高水平的tau和Aβ可能表明OSAS中的BBB功能障碍.
- 在OSAS期间释放的外体细胞可以损害BBB完整性,可能增加认知障碍和神经退行症的风险.
- 外体显示出与OSAS相关的神经并发症的诊断生物标志物的前景.
关键词:
氨基化物 氨基化物生物标志物 生物标志物血脑屏障 血脑屏障 血脑屏障 血脑屏障年长的老人老年人老年人.外基因组是外基因组的组成部分.阻塞性睡眠呼吸暂停症是什么知道的 知道的 知道的紧密的连接蛋白质紧密的连接蛋白质.更多相关视频
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