生物标志物 生物标志物
Jianqiao Tian1,2, Wen Zhang3, Sheelakumari Raghavan1
1Mayo Clinic, Rochester, MN, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
白质的完整性会影响陶的积累速度,而陶的进展会进一步损害白质. 这些关联,特别是血管风险和陶积累对白质的影响,显示出明显的性别差异.
科学领域:
- 神经成像是一种神经成像.
- 神经退行性疾病 神经退行性疾病
- 白色物质 诚信 完整性
背景情况:
- 白质 (WM) 促进病理的传播,但也受到积的损害.
- 了解tau和WM之间的动态关系对于神经退行性疾病研究至关重要.
研究的目的:
- 为了研究积和白质 (WM) 完整性之间的纵向关联.
- 探索这些关系中的潜在的性别差异.
主要方法:
- 利用了374名参与者的纵向扩散MRI和flortaucipirPET数据.
- 在下白质 (IT-WM) 管中使用神经质密度指数 (NDI) 评估WM完整性.
- 采用结构方程建模 (SEM) 来分析tau指标和WM完整性之间的关系.
主要成果:
- 基线tau水平影响了随后tau积累的速度,由IT-WM完整性介导.
- 渐进的积与IT-WM神经密度指数 (NDI) 的下降有关.
- 这些关系在男性中更为明显,男性也对WM健康产生了更大的血管风险影响,女性的tau积累率更高.
结论:
- 完整的白质在调节陶积累方面起着机械作用.
- 白质的恶化与积率的增加有关.
- 在tau-WM关系中显著的性别差异需要进一步调查.
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