青春期荷尔蒙和青春期早期女性大脑:多模式脑部MRI研究
Muskan Khetan1,2, Nandita Vijayakumar3,4,5, Ye Ella Tian6
1Centre for Youth Mental Health, The University of Melbourne, Melbourne, Victoria, Australia.
Human brain mapping
|January 20, 2026
概括
像雌激素 (E2), (Tes) 和脱氨 (DHEA) 这样的青春期激素与青春期女性大脑结构和功能有关. 这项研究揭示了在发育过程中受到这些关键激素影响的独特和共同的神经通路.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 内分泌学 在内分泌学.
背景情况:
- 青春期涉及重要的荷尔蒙变化,影响青少年的大脑发育和行为.
- 以前对类固醇激素和青少年女性大脑结构/功能的研究是有限的和不一致的,通常是由于样本大小小小.
- 了解这些关系对于理解典型和非典型的青少年发育至关重要.
研究的目的:
- 调查关键的青春期激素雌醇 (E2), (Tes) 和脱水氨 (DHEA) 之间的关联以及青少年女性的大脑结构和功能.
- 为了确定每个激素独特的特定神经相关物和它们之间共享的特定神经相关物.
- 阐明青春期期间荷尔蒙波动影响青少年大脑成熟和行为的机制.
主要方法:
- 利用了来自青少年大脑认知发展 (ABCD) 研究的3024名青少年女性 (年龄为8.92-13.33) 的数据.
- 使用弹性网回归与交叉验证来分析激素水平和大脑表型之间的关联.
- 使用多式神经成像检查大脑结构 (灰质体积,状深度,皮质厚度,白质微观结构) 和功能 (休息状态连接,情绪 n-back 任务执行).
主要成果:
- 结构性大脑特征 (皮层厚度,深度,白质微观结构) 和静止状态连接与激素水平有显著的关联.
- 雌醇 (E2) 与参与工作记忆和情绪处理的前额和前运动区域有着强烈的关联.
- (Tes) 和脱水氨 (DHEA) 主要与与视觉空间功能相关的头顶和部区域有关.
- 这三种激素都与前额叶皮质, temporoparietal junction 和 insula cortices 有关.
结论:
- 这项研究在青少年女性中确定了E2,Tes和DHEA的独特和重叠的神经相关物.
- 研究结果表明,特定的大脑区域和网络受到青春期激素的不同影响.
- 提供了关于青春期对青少年行为和认知发展影响的基础的神经生物学机制的见解.
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