血液生物标志物区分AD相关的与非AD相关的认知缺陷
Kelsey R Sewell1,2, Lauren E Oberlin1,3, Thomas K Karikari4
1AdventHealth Research Institute, Neuroscience, Orlando, Florida, USA.
概括
像p-tau217这样的血液生物标志物可以识别与阿尔茨海默病 (AD) 相关的记忆力下降. 神经纤维光 (NfL) 表示更广泛的认知变化,有助于区分成年人的认知障碍的原因.
科学领域:
- 神经学 神经学
- 生物标志物发现发现
- 认知老龄化 认知老龄化
背景情况:
- 在临床前阶段区分阿尔茨海默病 (AD) 和其他导致认知衰退的原因是具有挑战性的.
- 基于血液的生物标志物为早期检测和差异化提供了一个有希望的,不那么侵入性的方法.
研究的目的:
- 评估等离子体生物标志物的能力,以检测和区分认知能力不受损的个体的认知性能变化.
- 评估特定的血液标志物是否与AD相关的与非AD相关的认知变化相关.
主要方法:
- 648名没有认知障碍的参与者 (平均年龄70岁) 接受了认知评估.
- 测量了等离子体生物标志物,包括粉样β (Aβ) 1-42/1-40,酸化 (p-tau) 181和217,状纤维酸蛋白 (GFAP) 和神经丝光 (NfL).
主要成果:
- 升高的p-tau217与较差的情节性记忆性能特别相关,独立于NfL.
- 较高的NfL水平与多个领域的更广泛的认知衰退有关,无论p-tau217水平如何.
结论:
- 血液生物标志物,特别是p-tau217和NfL,可以帮助区分与AD相关的认知缺陷与其他原因.
- 这些发现支持使用血液测试进行早期干预和阿尔茨海默病监测.
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