增加休息状态BOLD周转率 (TBOLD) 与衰老期间认知能力下降有关
Lisa M James1,2,3, Peka Christova1,2, Apostolos P Georgopoulos1,2
1The Healthy Brain Aging Group, Brain Sciences Center, Department of Veterans Affairs Health Care System, Minneapolis, MN, USA.
Neuroscience insights
|October 23, 2024
概括
增加大脑信号循环 (TBOLD) 与现在和未来的认知功能,包括记忆和执行技能,都与较差的认知功能有关. 这表明,神经炎症和认知衰退之间存在潜在的联系机制.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 衰老研究研究 衰老研究
背景情况:
- 静止状态血液氧气水平依赖信号 (TBOLD) 交换是局部皮质大脑状态的关键指标.
- 了解TBOLD和认知功能之间的关系对于衰老研究至关重要.
研究的目的:
- 评估TBOLD与老年人认知功能之间的同时和滞后关联.
- 探索TBOLD对未来认知表现的预测关系.
主要方法:
- 对711名来自"人类结合体老龄化项目" (HCP-A) 的参与者的分析.
- 对TBOLD的静止状态fMRI数据的评估.
- 使用蒙特利尔认知评估 (MoCA) 和其子尺度对认知功能的评估.
- 统计控制年龄,性别和使用手的情况.
主要成果:
- TBOLD与整体的MoCA分数和特定的分量级 (延迟回忆,视觉空间/执行功能) 有负相关性.
- 这种关联在大脑区域中广泛存在,在左半球更为强烈.
- TBOLD预测了MoCA总得分和子表现的未来下降.
结论:
- 增加的TBOLD同时和前性地与认知表现下降有关.
- 研究结果表明,通过增加TBOLD,神经炎症与认知衰退之间存在潜在的联系机制.
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