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光学连贯断层扫描作为初级渐进性失言症的逻辑变体的潜在生物标志物:一个横截面前性研究

Fei Wu^1,2,3, Monica Lavoie^1,2, Mélanie Hébert⁴

¹Chaire de recherche sur les aphasies primaires progressives - Fondation de la famille Lemaire Centre Hospitalier Universitaire (CHU) de Québec - Université Laval, Québec City Québec Canada.

Alzheimer's & dementia (Amsterdam, Netherlands)

|September 25, 2025

概括

光学连贯断层扫描 (OCT) 和OCT血管扫描 (OCT-A) 显示了逻辑变异原发性渐进性失声症 (lvPPA) 的视网膜变化. lvPPA患者减少了视网膜神经纤维层厚度和改变了状血管区域,这表明OCT/OCT-A是潜在的生物标志物.

科学领域:

眼科医生眼科眼科
神经学神经学
生物标志物生物标志物

背景情况:

阿尔茨海默病 (AD) 研究已经探索了光学连贯断层扫描 (OCT) 和OCT血管学 (OCT-A) 作为生物标志物.
初级渐进性失言症 (lvPPA) 的逻辑变体与AD共享粉样蛋白病理,但缺乏视网膜生物标志物研究.
这项研究研究了lvPPA患者的视网膜变化.

研究的目的:

描述和比较 lvPPA 患者和健康对照人群之间的视网膜参数.
评估OCT和OCT-A作为lvPPA的诊断工具的潜力.

主要方法:

10名lvPPA参与者和11名健康对照者接受了OCT和OCT-A成像检查.
在lvPPA中,amyloid病理通过腰部穿刺得到证实.
测量的关键视网膜参数是视网膜神经纤维层 (RNFL) 厚度和状血管区 (FAZ) 特性.

主要成果:

与对照组相比,lvPPA参与者显示时间RNFL厚度显著减少 (p=0.013).
lvPPA患者的FAZ循环性显著降低 (p=0.002).

结论:

在lvPPA中RNFL稀释可能表明皮质缩后的跨突触退化.
减少FAZ循环性表明与粉样蛋白负担相关的早期微血管变化.
超越国外地区和超越国外地区-A显示出作为诊断lvPPA的非侵入性生物标志物的潜力.

关键词:

阿尔茨海默氏症的疾病是阿尔茨海默氏症.氨基化物氨基化物足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL AVASCULAR ZONE) 是指足骨非血管区 (FOVAL 初级渐进性失言症的逻辑变异变体.神经退行症的神经退行症光学连贯性断层扫描技术光学连贯性断层扫描血管图谱主要的渐进性失语症.视网膜生物标志物的生物标志物视网膜退化视网膜退化视网膜神经纤维层是一种神经纤维层.逆行性退行性退行性退行性退行

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