COVID-19 加剧神经血管脱并导致轻度认知障碍患者内皮功能障碍
Cameron D Owens1,2, Camila B Pinto1,2, Zsofia Szarvas1,2,3
1Oklahoma Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences, Oklahoma City, OK 73117, USA.
与没有感染的人相比,轻度认知障碍和COVID-19病史的老年人表现出神经血管合 (NVC) 和血管功能受损. 这表明COVID-19可能会加剧弱势群体的认知衰退.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 传染性疾病 传染性疾病
背景情况:
- 轻度认知障碍 (MCI) 影响全球20%的老年人,预防干预措施有限.
- 长期COVID严重影响70%以上的老年人的认知能力.
- 神经血管合 (NVC),对于认知至关重要,随着年龄和神经认知障碍而下降.
研究的目的:
- 研究COVID-19对脑皮层NVC和MCI老年人血管功能的影响.
- 为了确定以前的COVID-19感染是否通过NVC损伤加剧认知衰退.
主要方法:
- 横截面研究比较MCI患者与 (COV+) 和没有 (COV-) COVID-19病史.
- 功能近红外谱学 (fNIRS) 在n-back任务中测量了脑皮层NVC反应.
- 使用手臂动脉流介导扩张来评估内皮功能.
主要成果:
- 与COV-组相比,COV+组在左背侧前额叶皮层呈现较低的NVC.
- 在COV+组中,内皮功能也显著下降.
- 这些发现表明,COVID-19对MCI患者的NVC和血管健康有负面影响.
结论:
- 由于影响NVC,COVID-19感染可能会加剧老年人的长期认知后果.
- 迫切需要进行研究和临床试验,以开发保护或恢复NVC的干预措施.
- 了解这些机制对于预防脆弱人群中痴呆症进展至关重要.
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