前皮质在子宫内增加了皮下连接性和成年后的可塑性
Gabriela Epihova1, Dimitar Z Epihov2, Danyal Akarca3,4
1MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK gabriela.epihova@mrc-cbu.cam.ac.uk.
概括
大脑区域的发育显示出早期的前-连接性和成人可塑性. 前皮质的这种增强的可塑性与瘤原体的脆弱性增加有关,与其他大脑区域不同.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 脑部成像 脑部成像
背景情况:
- 成人大脑皮层表现出区域功能专业化,但这些功能的发展轨迹和维护仍然不完全理解.
- 研究皮质区域的早期和晚期差异对于理解大脑发育和功能至关重要.
研究的目的:
- 用连接学和转录学研究人类皮质区域的早期 (胎儿) 和晚期 (成年) 差异.
- 探索皮层区域连接性,可塑性和瘤性脆弱性之间的关系.
主要方法:
- 从两性中利用人类胎儿和成人大脑连接体和转录体.
- 在妊娠后24周分析了区域连接模式.
- 检查了成年人皮层区域的髓含量,围神经网络的基因表达和祖细胞标记物.
主要成果:
- 24周前部区域与皮下区域的连接不成比例,这表明早期的整合作用.
- 成年前皮质表现出较低的髓蛋白,减少了周神经网络基因表达,以及更高的祖先细胞标记物表达,这表明塑性增加.
- 体和体区域表现出与可塑性降低一致的特征.
- 前皮质的可塑性增加与较高的质瘤发病率和质瘤相关基因的表达相关.
结论:
- 皮层区域的功能差异源于早期连接性和成人可塑性的不同模式.
- 前皮质的增强可塑性可能支持灵活的神经反应和总域功能.
- 这种可塑性与瘤的脆弱性增加有关,为大脑瘤的发展提供了洞察力.
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