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胎儿人类下层结核在第二个三个月的组织学发展

Reetuparna Nanda¹, Mihail Bota¹, Jaikishan Jayakumar^1,2

¹Sudha Gopalakrishnan Brain Centre, Indian Institute of Technology Madras, Chennai, India.

Frontiers in neuroanatomy

|January 21, 2025

概括

人类胎儿的下结体 (IC) 发育在第二个三个月发生在两个阶段. 研究人员绘制了它的生长和细胞成熟的地图,确定了神经元类型和蛋白质表达模式.

科学领域:

神经科学是一个神经科学.
发育生物学发展生物学
听觉神经科学听觉神经科学

背景情况:

下侧结肠 (IC) 是中脑的关键听觉中心和多感官集成中心.
关于人类胎儿IC发育的知识有限,特别是在怀孕的第二个三个月.

研究的目的:

系统地描述人类胎儿IC的组织学发育和体积增长.
分析细胞成熟,包括神经元形态和蛋白质表达 (calretinin,GFAP),在发展中IC.
确定第二个三个月内人类胎儿IC的关键发育阶段.

主要方法:

在5个妊娠阶段 (15,18,21,24,27GW) 的人类胎儿IC的3D重建和体积分析.
组织学检查使用Nissl染色,calretinin免疫组织化学和状纤维酸蛋白 (GFAP) 染色.
在IC子部分内评估放射性质纤维和星细胞发育.

主要成果:

人类胎儿IC体积显著增加,从左半球的15 GW (12.85 mm3) 增加到27 GW (34.27 mm3).
与成年类型相似的星状和圆形神经元在IC (CNIC) 的中央核中被确定为24GW.
卡莱丁宁表达主要观察到皮质IC,而辐射质纤维在18GW时突出,后来下降.

结论:

人类胎儿IC发育和细胞成熟发生在第二个三个月的两个主要阶段.
该研究提供了人类胎儿IC结构和细胞发育的详细时间表.
这些发现有助于了解听觉和多感官处理途径的早期发展.

关键词:

在GFAPAP中,GFAP是最重要的.卡尔雷丁宁是一种卡尔雷丁宁.中心核的核心核.细胞架构细胞架构背部皮层的皮层.外部皮层 (外皮层) 的外皮层.下一篇: 下一篇: 下一篇: 下一篇: 下一篇: 下一篇: 下一篇: 下一篇: 下一篇: 下一篇

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