在阿尔茨海默氏症患者的听觉皮层缩
Ana Sousa Menezes1, Ana Coelho2, Rafaela Morais-Ribeiro2
1Department of Otorhinolaryngology-Head and Neck Surgery, Hospital de Braga, Braga, Portugal; Life and Health Sciences Research Institute (ICVS), ICVS/3B's, School of Medicine, University of Minho, Braga, Portugal.
Hearing research
|September 21, 2025
概括
阿尔茨海默病 (AD) 显著缩小了听觉皮层 (AC). 虽然年龄也会降低AC体积,但这种效应在阿尔茨海默病患者中不那么明显,特别是在特定的AC区域.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 老年学是一门学科.
背景情况:
- 阿尔茨海默病 (AD) 是一种进展性神经退行性疾病.
- 听觉皮层 (AC) 在听觉处理中起着至关重要的作用.
- 衰老与大脑结构的变化有关.
研究的目的:
- 在阿尔茨海默氏病 (AD) 患者中描述听觉皮层 (AC) 容量.
- 用磁共振成像 (MRI) 来评估衰老对AC的影响.
主要方法:
- 一项多中心的横截面研究分析了200名阿尔茨海默病患者,200名老年人对照和200名轻度认知障碍 (MCI) 个体的数据.
- 听力皮层 (AC) 亚区域 (Heschl's gyrus,Planum Temporale,Planum Polare) 的体积使用Freesurfer进行了量化.
- 区域体积被规范化,并对各组进行比较,同时考虑年龄和性别.
主要成果:
- 与MCI和老年人对照相比,在AD患者中观察到明显较低的AC体积.
- 随着年龄的增长,AC体积下降,但这种下降在阿兹海默症患者的特定AC区域 (左侧时间和左侧Heschl's gyrus) 不那么明显.
- 年龄和AD诊断都是AC体积的独立负预测因素,AD具有更显著的效果.
结论:
- 听觉皮层 (AC) 在阿尔茨海默氏症 (AD) 中明显受到影响.
- 老龄化导致AC体积下降,尽管在AD患者的某些AC区域下降的程度较低.
- 与AD患者相比,轻度认知障碍 (MCI) 患者表现出初级和左二级AC的更好保存.
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