生物标志物 生物标志物
Jamie Mitchell1, Nowran Nasr1, Eimear McLaughlin1
1Queen's University Belfast, Belfast, United Kingdom.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
通过OCT和UWF成像检测到的视网膜血管参数可以作为阿尔茨海默病 (AD) 风险的非侵入性生物标志物. 这些发现为早期AD检测和监测提供了一种可扩展的方法.
科学领域:
- 眼科医生 眼科 眼科
- 神经学 神经学
- 生物标志物发现发现
背景情况:
- 阿尔茨海默病 (AD) 治疗的挑战强调了对早期生物标志物的需求.
- 深度和频繁的表型 (DFP) 研究调查了新的生物标志物,包括多模式视网膜成像.
- 本研究的重点是从OCT和超广场图像 (UWF) 获得的基线视网膜血管特征和厚度.
研究的目的:
- 为了确定潜在的阿尔茨海默病 (AD) 风险的非侵入性生物标志物.
- 评估视网膜血管参数 (RVP) 和视网膜厚度与AD风险因素相关.
- 探索OCT和UWF成像在早期AD检测中的实用性.
主要方法:
- 招募的参与者年龄≥60岁,患有前期阿尔茨海默病和对照人群的比例为4:1.
- 使用VAMPIRE软件从UWF图像中提取RVP (碎形维度,宽度梯度,宽度截面,扭曲度).
- 从使用海德堡眼睛探测器 (Heyex) 的OCT图像中测量了视网膜和视网膜神经纤维层 (RNFL) 的厚度.
- 分析了RVP,RNFL厚度和AD风险因素之间的关联 (家族痴呆史[FHD],ApoE4载体状态).
主要成果:
- 痴呆症家族史 (FHD) 与较高的碎形维度和动脉宽度交叉,以及较低的动脉宽度梯度相关.
- 与非载体相比,ApoE4载体的动脉和静脉宽度截图减少.
- 在FHD患者中观察到增加鼻腔和下腔RNFL厚度的趋势.
- 在形或视网膜厚度和FHD或ApoE4状态之间没有发现显著的关联.
结论:
- 来自OCT和UWF成像的视网膜血管参数显示为AD风险的非侵入性生物标志物具有前途.
- 这些成像技术为早期AD检测和监测提供了可扩展的方法.
- 纵向研究是有必要的,以评估这些视网膜参数在跟踪AD进展中的作用.
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