多夜间的声学刺激与认知障碍的老年人更好的睡眠,粉样蛋白动态和记忆有关
Céline J Zeller1,2, Marina Wunderlin1, Korian Wicki1,2
1University Hospital of Old Age Psychiatry and Psychotherapy, University of Bern, 3000, Bern 60, Switzerland.
GeroScience
|May 14, 2024
概括
阶段锁定声刺激 (PLAS) 在认知障碍的老年人中改善了睡眠,记忆和粉样蛋白生物标志物. 虽然在这个群体中效果延迟,但PLAS显示了减轻认知衰退的潜力.
科学领域:
- 神经科学是一个神经科学.
- 睡眠科学 睡眠科学
- 老年学是指老年学的学科.
背景情况:
- 睡眠障碍,特别是慢波睡眠 (SWS) 障碍,与认知能力下降和痴呆症有关.
- 在SWS损伤和认知衰退之间存在双向关系,形成一个有害的循环.
- 增强SWS的非侵入性方法对于潜在地中断这个循环至关重要.
研究的目的:
- 研究阶段锁定声学刺激 (PLAS) 在增强SWS电生理学和认知功能的疗效,在有或没有认知障碍 (CI) 的老年人.
- 评估PLAS对血氨基酸β (Aβ) 比率和随时间推移的情节性记忆的影响.
- 探索健康对照组 (HC) 和CI患者之间对PLAS反应的潜在差异.
主要方法:
- 一个主题内设计,涉及一个基线 (假PLAS) 夜晚和三个连续的真实PLAS夜晚.
- 参与者包括18名健康的老年人和16名具有CI的老年人 (蒙特利尔认知评估≤25).
- 测量包括电脑电图 (EEG) 电生理反应,血Aβ42 / Aβ40比率和情节性记忆,在干预前和后进行评估,并在1周和3个月后重新评估记忆.
主要成果:
- 在HC和CI两组中,PLAS诱导了显著的电生理反应,记忆的改善与响应的大小相关.
- 与HC组相比,CI组的电生理学和记忆效应延迟.
- 三晚后,PLAS电生理反应在组之间没有差异,CI组中更强的反应与Aβ42/Aβ40比率的改善有关.
结论:
- 在CI的老年人中,PLAS有效地增强了SWS电生理学,记忆和粉样蛋白动力学,尽管记忆益处比健康人更晚.
- 在CI组的延迟反应表明,可能需要更长的干预措施来克服大脑完整性的下降.
- PLAS为改善认知衰退提供了一个有前途的非侵入性治疗途径,需要进一步研究并延长治疗时间.
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