在阿尔茨海默病和前性痴呆症中,深灰质核的缩模式
Arit Banerjee1,2, Fan Yang1, Joyita Dutta1
1Department of Biomedical Engineering, University of Massachusetts, Life Science Laboratories, Amherst, MA, USA.
Journal of Alzheimer's disease : JAD
|October 29, 2025
概括
在深层灰色物质结构 (如丘脑和关节层) 的皮层下退化是阿尔茨海默病 (AD) 和前性痴呆症 (FTD) 的关键. 这些区域的特定缩模式有助于区分AD与FTD及其子类型.
科学领域:
- 神经成像是一种神经成像.
- 神经退行发生神经退行.
- 深灰色物质结构 深灰色物质结构
背景情况:
- 皮质缩在痴呆症中得到了很好的研究,但深灰色物质 (thalamus,claustrum,基底核) 中的皮质下退化在阿尔茨海默病 (AD) 和前性痴呆症 (FTD) 中越来越多地被认可.
- 疾病特异性的皮质下退行模式仍然不够表征,需要进行详细的调查.
研究的目的:
- 在AD连续体 (轻度认知障碍,AD) 和FTD亚型 (bvFTD,svFTD,PNFA) 中量化深灰质缩.
- 评估纵向缩,认知关联,以及皮层下退行症的诊断分类能力.
主要方法:
- 利用来自ADNI和FTLDNI队列 (380名AD,274名FTD参与者) 的T1加权MRI数据的新型细分管道 (sTHOMAS).
- 使用ANCOVA进行群组比较,用于认知关联的部分相关性,以及用于诊断分类的随机森林模型.
- 包括对237名参与者的纵向分析,以跟踪缩进展.
主要成果:
- 在AD和FTD中观察到中脊,前中脊,脉的乳头核,核 accumbens和闭层的显著缩,在bvFTD中严重程度更高.
- 纵向分析表明bvFTD中缩进展最快.
- 实现了高诊断准确度:96.8%的AD与FTD相比,77.7%的PNFA与svFTD相比.
- 皮下缩与执行,语言和语义认知缺陷相关.
结论:
- 在特定的乳头核,核和关闭层中的缩模式将AD与FTD和FTD亚型区分开来.
- 这些皮层下结构显示出作为诊断和监测神经退行性疾病的生物标志物的潜力.
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