代谢综合征中神经血管合障碍:一项fNIRS研究
Jigar Gosalia1, Jocelyn M Delgado Spicuzza2, Christine K Bowlus1
1The Pennsylvania State University, Department of Kinesiology, University Park PA 16801.
Journal of applied physiology (Bethesda, Md. : 1985)
|May 19, 2025
概括
代谢综合征会损害神经血管合 (NVC) 和内皮功能,导致老年人的认知能力下降. 这些大脑血流变化与认知能力下降有关.
科学领域:
- 神经科学是一个神经科学.
- 心血管科学 心血管科学
- 老年学是一门学科.
背景情况:
- 代谢综合征 (MetS) 与加速的认知衰退有关,但潜在的机制尚不清楚.
- 神经血管合 (NVC) 对于将大脑血流与神经元活动相匹配至关重要,它取决于内皮功能,在MetS中可能会被破坏.
- 了解NVC,内皮功能和MetS中的认知对于识别认知障碍的早期脑血管机制至关重要.
研究的目的:
- 评估神经血管合 (NVC),外周内皮功能和老年人具有或没有代谢综合征 (MetS) 的认知表现.
- 在MetS的背景下调查NVC,内皮功能和认知衰退之间的关联.
主要方法:
- 有 (n=22) 和没有 (n=26) MetS的老年人接受了神经认知测试,在n-back任务中使用功能近红外光谱 (fNIRS) 进行NVC评估,并对内皮功能进行流媒扩张 (%FMD) 测量.
- 在认知任务期间,通过氧血球蛋白 (HbO) 和脱氧血球蛋白 (HbR) 信号的变化量化NVC.
- 通过手臂超声波评估内皮功能,测量了%FMD.
主要成果:
- 与对照组 (p=0.036) 相比,MetS患者的NVC受损,在高认知负载 (2回任务) 期间,前运动皮质的HbO增加减弱的证据表明,与对照组相比 (p=0.036).
- 与对照组相比,MetS组表现出较差的内皮功能 (%FMD:4.42 ±1.71%与5.55 ±1.35%,p=0.01) 和较低的双背任务精度 (81.7 ± 6.4%与86.0 ±6.1%,p=0.027).
- 在内皮功能 (%FMD) 和认知准确性 (r=0.37,p=0.012) 之间发现了显著的积极关联.
结论:
- 额叶皮层NVC损伤可能代表早期的脑血管机制,有助于MetS的认知衰退,特别是在高认知需求下.
- 外周内皮质功能障碍似乎与MetS患者观察到的NVC缺陷有关.
- 这些发现强调了脑血管健康,内皮功能和代谢综合征老化中的认知表现之间的联系.
关键词:
这是脑血管系统.认知 认知是一种认知.代谢综合征是代谢综合征的一种.神经血管合器 神经血管合器VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID VCID更多相关视频
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