皮质 - 基底的白质微观结构与自闭症谱系障碍的限制性重复行为有关
Bradley J Wilkes1, Derek B Archer2,3, Anna L Farmer4
1Department of Applied Physiology and Kinesiology, University of Florida, P.O. Box 118205, Gainesville, FL, 32611, USA. bwilkes@ufl.edu.
Molecular autism
|January 23, 2024
概括
自闭症谱系障碍 (ASD) 显示了基底质中白质微观结构的改变,与受限制的重复行为 (RRB) 相关. 在ASD中,大脑结构的差异与性别无关,灰质体积保持不变.
科学领域:
- 神经成像是一种神经成像.
- 发育神经科学的发展神经科学.
- 脑部成像 脑部成像
背景情况:
- 限制性重复性行为 (RRB) 是自闭症谱系障碍 (ASD) 的核心诊断领域.
- 有限的神经成像研究已经探索了与ASD中RRB相关的大脑变化.
- 以前的研究更多地关注了自闭症患者的社会和沟通缺陷.
研究的目的:
- 研究与典型发育 (TD) 对照相比,ASD儿童和青少年的基底和小脑的结构性大脑差异.
- 在ASD中使用自由水成像检查白质微观结构.
- 探索大脑结构,生物性别和ASD中RRB严重程度之间的关系.
主要方法:
- 利用来自国家心理健康研究所数据档案的神经成像数据.
- 从T1加权解剖扫描中评估区域灰质量.
- 使用扩散权重扫描和自由水成像的量化白质微观结构.
主要成果:
- 患有自闭症的个体在皮质 - 基底细胞白质通道中表现出明显较低的自由水校正的分数异质性 (FA T) 和较高的自由水 (FW).
- 白质中的这些微观结构差异与RRB的测量有显著的相关性.
- 在ASD和TD组之间,在基底或小脑灰质体积方面没有发现显著差异.
结论:
- 在ASD中,皮层-基底的白质微观结构发生了变化,并与RRB直接相关.
- 自由水估计对于理解ASD中的白质变化及其与RRB的联系至关重要.
- 基底和小脑灰质体积没有差异,并且在大脑结构中没有观察到与性别相关的相互作用效应.
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