神经血管相连贯性在阿尔茨海默病中发生变化
Juliane Bjerkan1, Bernard Meglič2, Gemma Lancaster1
1Department of Physics, Lancaster University, LA1 4YB Lancaster, UK.
Brain communications
|February 26, 2025
概括
阿尔茨海默病患者表现出大脑氧化能力和协调能力的降低,表明神经血管单元功能受损. 这些发现表明了早期诊断和监测疾病进展的潜力.
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
- 生物医学工程 生物医学工程
背景情况:
- 阿尔茨海默病 (AD) 是最常见的痴呆症,其特点是神经退行和蛋白质聚合.
- 血管和神经血管单元 (NVU) 在AD进展中的作用越来越被认可.
- 在AD中观察到微血管密度降低和血管/质细胞的基因表达改变.
研究的目的:
- 为了在阿尔茨海默病中对NVU功能进行非侵入性体内变化量化.
- 为了评估AD患者与对照者的大脑氧化,神经和心肺呼吸活动.
主要方法:
- 功能近红外光谱 (fNIRS) 用于大脑的氧化.
- 电脑电图 (EEG) 用于神经活动.
- 电心电图 (ECG) 和心肺呼吸活动的呼吸力.
- 波形变换分析时间变化的振荡和相位连贯性.
主要成果:
- 阿尔茨海默病组显示大脑氧化振荡的功率显著下降.
- 在AD中,大脑氧化时间序列之间的全球相位一致性显著降低.
- 在AD患者中,神经血管相干度在0.1Hz左右显著下降.
- 在AD组中观察到平均呼吸速率的增加.
- 血管和神经元活动之间的相连贯性减少表明NVU功能发生变化.
结论:
- 阿尔茨海默病与大脑氧化振荡的功率和协调减少有关,特别是与血管运动相关的振荡.
- 在AD中NVU功能改变可能导致大脑氧气供应减少,影响ATP生产和粉样β清除.
- 这些神经血管动态具有作为早期诊断标记物和评估阿尔茨海默病治疗干预措施的潜力.
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