自闭症患者的局部活动变化与神经递质特性和胺诱导的大脑变化相关
Pascal Grumbach1,2, Jan Kasper1,3, Joerg F Hipp4
1Institute of Neurosciences and Medicine, Brain & Behaviour (INM-7), Research Centre Juelich; Wilhelm-Johnen-Straße 1, Juelich, Germany.
Nature communications
|September 9, 2025
概括
自闭症患者的脑部活动减少,特别是在默认模式的网络区域. 这些变化与广泛的神经传输中断相关,表明大脑刺激抑制平衡发生了变化.
科学领域:
- 神经科学是一个神经科学.
- 神经发育障碍 神经发育障碍
- 脑部成像 脑部成像
背景情况:
- 自闭症谱系障碍 (ASD) 是一种神经发育状况,其特征是改变了静止状态的大脑功能.
- 在ASD病理生理学中的一个关键假设涉及到激发-抑制比率的增加.
- 在体内证据将神经传递障碍与ASD中的功能性大脑变化联系在一起仍然有限.
研究的目的:
- 为了比较自闭症个体与神经类型对照者的局部静止状态大脑活动和神经递质同局部化.
- 为了研究这些大脑活动差异与药物制剂诱导的兴奋抑制平衡变化之间的相关性.
- 推进对自闭症神经生理学基础的理解.
主要方法:
- 在两个独立的队列中分析休息状态大脑活动和神经递质同定位 (N=405,自闭症的N=395;对照组的N=473,N=474).
- 大脑活动模式与由谷氨酸 (胺) 和GABAergic (midazolam) 药物诱导的兴奋抑制变化的相关性.
- 利用神经成像技术评估局部大脑活动和神经递质系统.
主要成果:
- 自闭症患者始终表现出局部大脑活动的减少,特别是在默认模式网络区域.
- 整个大脑活动的差异在空间上与谷氨酸,GABAergic,多巴胺和胆固醇神经传递系统重叠.
- 在NMDA-对抗剂胺胺剂的使用后观察到的功能变化反映了自闭症中观察到的空间模式.
结论:
- 自闭症局部大脑活动的持续变化反映了神经传递中广泛的干扰.
- 激发抑制平衡的药理调节,如在胺中所见,可以模仿自闭症中观察到的一些功能模式.
- 这些发现为自闭症谱系障碍的神经生理学基础提供了关键的见解.
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