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定量敏感性映射显示自闭症谱系障碍儿童的脑铁含量变化:全脑分析

Xiaowen Xu^1,2, Yang Li³, Haifei Lan¹

¹Department of Radiology, Qingdao University Affiliated Women and Children's Hospital, 6 Tongfu Road, Qingdao, 266034, Shandong, China.

|August 27, 2025

概括

自闭症谱系障碍 (ASD) 儿童在特定的大脑区域,特别是皮质区域的铁含量发生变化. 这些铁异常与运动发育相关, 提供了对自闭症病理学的新见解.

科学领域:

神经成像
神经发育障碍
生物标志物

背景情况:

之前的研究表明在自闭症谱系障碍 (ASD) 中皮下结构存在铁缺乏.
缺乏使用定量敏感性映射 (QSM) 的全脑铁含量研究.
这项研究研究了ASD儿童的全脑铁分布.

研究的目的:

使用QSM检测ASD儿童的整脑铁含量.
研究区域敏感度值与自闭症临床特征之间的关系.

主要方法:

招募了30名自闭症儿童和28名典型发育 (TD) 儿童.
获得了脑部MRI扫描,并使用定量敏感度映射 (QSM) 来评估铁含量.
组间的敏感度值进行了比较,并与临床评估相关.

主要成果:

患有自闭症的儿童在皮层区域 (例如,部,部,内皮圈,带膜圈) 呈现较高的敏感性.
在自闭症儿童的右脑白质中观察到较低的敏感性.
皮层敏感度值与ASD总运动得分有负相关性.

结论:

自闭症儿童在皮层区域表现出异常的铁敏感性.
这些铁异常可能与ASD的临床表现有关.
这些发现为自闭症病理生理学提供了新的见解.

关键词:

自闭症谱系障碍大脑铁磁共振成像定量敏感性映射

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相关概念视频

Autism Spectrum Disorder

Autism Spectrum Disorder

Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.