大脑微出血和粉样蛋白病理学估计来自粉样蛋白生物标志物研究
Julie E Oomens1, Veerle van Gils1, Stephanie J B Vos1
1Alzheimer Center Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands.
JAMA network open
|January 22, 2025
概括
在阿尔茨海默氏症中,大脑微出血 (CMB) 的患病率随着粉样蛋白病理和APOE ε4基因存在而增加.
科学领域:
- 神经学 神经学
- 老年学是一门学科.
- 生物标志物研究 生物标志物研究
背景情况:
- 大脑微型血液 (CMB) 和APOE ε4等位基因拷贝数已成为粉样蛋白相关成像异常的确立危险因素.
- 这些异常在阿尔茨海默病 (AD) 患者中是令人担忧的,这些患者正在接受针对粉样β斑块减少的治疗.
研究的目的:
- 根据它们的数量 (任何,不超过4个或少于2个) 来确定大脑微血病 (CMB) 的流行率.
- 为了将CMB患病率与粉样蛋白状况联系起来,APOE ε4等位基因拷贝数和参与者的年龄.
主要方法:
- 使用来自15项研究和记忆临床研究的综合数据进行的横截面研究 (粉样蛋白生物标志物研究倡议).
- 包括4080名参与者,提供有关年龄,认知状态,粉样蛋白状况和CMBs的可用数据.
- 通过MRI评估的CMB;通过脑脊液Aβ42水平或粉样蛋白PET扫描确定的粉样蛋白病理.
主要成果:
- 癌细胞核突的患病率随年龄,粉样蛋白状况和APOE ε4拷贝数量而有显著变化.
- 在没有认知障碍的个体中,粉样蛋白和APOE ε4与叶CMB有关.
- 在轻度认知障碍或阿尔茨海默病痴呆症组中,粉胺和APOE ε4与任何CMB和不超过4个CMB的几率增加有关.
结论:
- 在大型队列中,CMB患病率与粉样蛋白状况,APOE ε4副本数和年龄有关.
- 这些患病率估计对于评估阿尔茨海默病临床试验中抗粉胺疗法的安全性至关重要.
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