生物标志物 生物标志物
Marco Öchsner1, Matthias Brendel2, Nicolai Franzmeier3
1LMU, München, Bavaria, Germany.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
微质激活在阿尔茨海默氏病 (ADS) 频谱中增加,并与陶积累呈反相关性,这表明它可能在疾病过程中起到早期作用.
科学领域:
- 神经科学是一个神经科学.
- 神经炎症是一种神经炎症.
- 阿尔茨海默氏症疾病研究研究
背景情况:
- 观察到微质激活,以反映高度连接的大脑区域的tau积累.
- 在阿尔茨海默氏病 (ADS) 谱中微质激活和病理之间的确切关系尚不清楚.
研究的目的:
- 与健康对照组 (HC) 相比,研究ADS患者微质激活的纵向变化.
- 确定微质激活变化是否与水平和功能连接性 (FC) 有关.
- 探索不同临床痴呆症评级 (CDR) 组中微质和质之间的关系.
主要方法:
- 长度研究 (ActiGliA) 涉及ADS和HC参与者.
- 使用[18F]GE-180 (TSPO) PET用于微质激活和休息状态fMRI的FC.
- 随访TAU-PET和TSPO-PET扫描是在18个月后获得的.
主要成果:
- 与HC相比,ADS参与者中的微质激活 (TSPO比率) 在纵向上增加.
- 在ADS中增加的微质激活与tau水平负相关,与tau热点的FC距离正相关.
- 晚期ADS显示TSPO SUVRs增加,tau水平通过早期的微质激活更好地预测.
结论:
- 微质激活在ADS中增加,并与tau积累呈现逆相关性.
- 观察到的空间和时间模式表明,微质激活可能在阿尔茨海默病中先于积.
- 这些发现突显了ADS进展中神经炎症和病理之间的动态相互作用.
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