睡眠剥夺后血Aβ水平的变化与医疗夜班工人的大脑结构重塑相对应
Hao-Tian Ye1, Chun-Qiang Lu2, Cong Wang1
1Department of Anesthesiology, Pain and Perioperative Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
Brain research bulletin
|October 7, 2023
概括
一晚的轮班工作和睡眠剥夺改变了大脑结构,影响了灰质密度和脑脊液. 这些变化与大脑废物产品 (如粉样β) 的清除受损相关.
科学领域:
- 神经科学是一个神经科学.
- 睡眠医学 睡眠医学
- 放射学 放射学是一门学科.
背景情况:
- 夜班工作和完全睡眠剥夺 (SD) 在医疗保健中很普遍,但它们对大脑结构和代谢清除的影响仍然不太清楚.
- 了解这些影响对于减轻潜在的长期神经系统后果至关重要.
研究的目的:
- 为了研究大脑结构改变和代谢产品清除在夜间轮班工作和完全睡眠剥夺后的关系.
- 使用MRI检查灰质密度 (GMD) 和平均扩散率 (MD) 的变化,并将它们与周围血液代谢物水平相关联.
主要方法:
- 在休息清醒 (RW) 和睡眠剥夺 (SD) 条件下,对22名ICU工作人员进行了结构和扩散MRI扫描.
- 基于voxel的形态测量和扩散张力成像分析了GMD和MD的变化.
- 分析了外周血液样本的脑代谢物,包括Aβ42/Aβ40水平.
主要成果:
- 睡眠不足导致前脑区域的GMD增加,后脑区域 (小脑,丘脑) 的GMD减少.
- 在SD下观察到大脑脊髓液体体积的显著减少和较低的Aβ42 / Aβ40水平.
- 在前部MD和血Aβ42/Aβ40之间发现了负相关性;在后部GMD和血Aβ-40之间发现了正相关性.
结论:
- 一个夜晚的轮班工作与睡眠剥夺诱导显著的,方向特定的结构性大脑变化.
- 这些变化与大脑代谢废物清除受损有关,特别是影响粉样β水平.
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