用磁共振成像技术对胎儿 rhesus macaque 的规范性大脑发育进行表征
Joshua A Karpf1,2, Kara E Garcia3, Vergina C Cuzon Carlson1,2
1Division of Neuroscience, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, United States.
Imaging neuroscience (Cambridge, Mass.)
|October 3, 2025
概括
这项研究为胎儿 rhesus macaque 大脑发育提供了最新的磁共振成像 (MRI) 模板. 这些模板可以追踪规范性神经发育,并揭示胎儿大脑成长中的性别差异.
科学领域:
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
- 医疗成像医学成像
背景情况:
- 精确跟踪胎儿大脑发育对于理解神经发育障碍至关重要.
- rhesus 提供了一个有价值的临床前模型,因为它们与人类类似的妊娠时间表.
- 非人类灵长类动物的长度胎儿成像具有挑战性,但对于研究发育变异性至关重要.
研究的目的:
- 为 rhesus macaques 创建更新的磁共振成像 (MRI) 胎儿模板.
- 在怀孕的下半年描述规范性神经发育轨迹.
- 为了研究胎儿大脑发育中的潜在的性别差异.
主要方法:
- 利用了50个正常发育的 rhesus macaque 胎儿的大样本,在子宫内纵向和横截面扫描.
- 在多个妊娠时间点生成T2加权和中皮层表面模板.
- 创建了一个年轻成年人模板,用于胎儿与成年人的比较.
主要成果:
- 开发了更新的 rhesus macaque胎儿MRI模板,用于规范性神经发育轨迹的表征.
- 在 rhesus macaque 胎儿大脑生长中发现了性二态的证据.
- 提供与其他物种对皮层发育模式的比较分析.
结论:
- 开发的模板有助于研究 rhesus 的规范性和可变性胎儿大脑发育.
- 这些发现强调了将性别视为灵长类神经发育中的生物变量的重要性.
- 这个资源有助于识别神经发育障碍的偏差.
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