在30-73岁的自闭症成年人中,脑皮层白质和皮层灰质的变化
Young Seon Shin1, Danielle Christensen2, Jingying Wang2
1Laboratory for Rehabilitation Neuroscience, Department of Applied Physiology and Kinesiology, University of Florida, PO Box 118206, Gainesville, FL, 32611-8205, USA.
Molecular autism
|March 6, 2025
概括
与神经类型相比,自闭症成年人表现出额头白质自由水增加和明显的脑衰老模式. 这项研究强调了在自闭症谱系障碍 (ASD) 研究中量化免费水的重要性.
科学领域:
- 神经科学是一个神经科学.
- 放射学 放射学是一门学科.
- 老年学是一门学科.
背景情况:
- 自闭症谱系障碍 (ASD) 显著影响终身健康和生活质量.
- 对自闭症成年人大脑衰老的研究是有限的,特别是在白色和灰色物质的微观结构变化方面.
- 了解这些变异对于解决老年自闭症患者的健康需求至关重要.
研究的目的:
- 调查新的扩散MRI (dMRI) 生物标志物,特别是自由水 (FW),自由水校正的微分异构 (fwcFA) 和自由水校正的平均扩散率 (fwcMD).
- 评估这些生物标志物在中老年和老年自闭症成年人中跨状道和相关灰质区域的生物标志物.
- 为了比较自闭症成年人和神经类型对照之间的微观结构变化和与年龄相关的模式.
主要方法:
- 从43名自闭症成年人和43名匹配的神经类型对照 (年龄在30-73岁之间) 获得了扩散MRI (dMRI) 扫描.
- 研究了各组之间的FW,fwcFA和fwcMD的差异,以及每个组内的与年龄相关的模式.
- 研究了区分地区的ASD临床测量和FW之间的关系.
主要成果:
- 与对照人群相比,自闭症成年人在七个额头横道中表现出明显升高的FW.
- 对照组显示FW与年龄相关的增加和fwcFA的减少,自闭症成年人没有这种模式.
- 自闭症成年人在状皮层表现出高FW,在背前运动皮层表现出低FWcMD;神经类型对照显示了与年龄相关的广泛FW增加,而自闭症成年人没有显示这种关联.
结论:
- 研究结果显示,自闭症成年人的前额白质FW增加和明显的与年龄相关的微观结构变异,表明大脑老化形状异质.
- 这项研究强调了在ASD的dMRI研究中量化FW的重要性.
- 局限性包括一个具有认知能力的队列,限制了概括性,以及一个横截面设计,排除了纵向变化推断.
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