News Release

胎儿酒精暴露的效应

Peer-Reviewed Publication

Proceedings of the National Academy of Sciences

Three-Dimensional Cerebellum and Brainstem Models

image: Three-dimensional cerebellum (red) and brainstem (orange) models overlaid on a mid-sagittal view of a gestation day 135 (equivalent to early third trimester in human) fetus rhesus macaque image obtained with MRI. These two structures are found to be smaller, compared to age-matched controls, at this gestational age in fetuses exposed to maternal alcohol drinking throughout the first trimester. view more 

Credit: Xiaojie Wang and Christopher Kroenke

一项关于猴的研究发现,在妊娠早期接触酒精能影响涉及运动控制的大脑区域的发育。对遇到胎儿酒精综合征的新生儿进行早期干预,能够减少长期认知和行为影响。近来在运动纠正方面的进步已经改善了对胎儿大脑的3D MRI的质量和分辨率。Xiaojie Wang及其同事发现,在妊娠期头三个月暴露于酒精中,会影响涉及恒河猴运动控制的大脑区域的发育。这组作者研究了一群28只雌性猕猴。这些猕猴之中的14只摄取了每天每公斤体重1.5克的酒精。在妊娠的3个时间点上,这组作者使用子宫内MRI对胎儿大脑进行了成像,之后立即进行了对大脑活动的电生理分析。乙醇暴露组和对照组胎儿的总脑容量没有差异。然而,在相当于人类妊娠期第三个三个月的时候,乙醇暴露组胎儿的大脑和脑干区域与对照组相比都更小,而且运动相关白质的成熟被改变了。电生理记录提示了这些差异在功能上是显著的。这组作者说,非侵入式子宫内MRI可能灵敏度足够用于开发成一种诊断工具,用于早在妊娠期第三个三个月发现胎儿酒精综合征。

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