生物标志物 生物标志物
Russell Sawyer1, Oluchi Ekenze2, Ya Yuan3
1University of Cincinnati, Cincinnati, OH, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
与白人相比,黑人个体的白质超强度 (WMH) 量显著增加,这可能解释了痴呆风险的种族差异. 需要进一步的研究来了解WMH发展的潜在机制.
科学领域:
- 神经学 神经学
- 放射学 放射学是一门学科.
- 公共卫生 公共卫生
背景情况:
- 白质过强度 (WMH) 是大脑小血管疾病的关键指标.
- WMH与阿尔茨海默病和血管痴呆症的风险增加有关.
- 有限的研究存在于种族,地理和WMH负担的相互作用.
研究的目的:
- 调查种族和地理区域与WMH损伤体积之间的关系.
- 为了评估WMH负担在特定的大脑区域和穿透动脉.
- 检查潜在的种族与地理区域在WMH发展中的相互作用.
主要方法:
- 利用了1094名中风/TIA参与者的MRI数据,用于研究中风的种族和地理差异原因 (REGARDS).
- 用于WMH损伤体积细分的未识别明亮物体 (UBO) 探测器.
- 应用了通用线性模型,调整共变量,以比较跨种族和地理群体的WMH体积.
主要成果:
- 与白人参与者相比,黑人参与者表现出更大的全脑,周周和深层WMH病变体积 (p < 0.0001).
- 在任何种族群体中,地理区域和WMH病变体积之间没有发现显著的关联.
- 相互作用分析表明,在WMH负担上没有显著的种族x地理区域相互作用.
结论:
- 调整人口统计学,临床和遗传因素,黑人参与者比白人参与者显示出明显更高的WMH病变体积.
- 这些发现可能有助于理解阿尔茨海默病和血管认知障碍的种族差异.
- 需要进一步的研究,以阐明驱动WMH发展的机制.
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