人胚胎三叉神经节细胞发育初步观察

Observation on development of trigeminal ganglion cells in human embryo

目的:观察人胚胎三叉神经节细胞随胎龄增长变化发育规律。方法:取19-32周人胚胎三叉神经节,光镜观察,细胞计数,图像分析仪测量三叉神经节细胞面积、周长、直径。结果:随着胎龄增长三叉神经节细胞数目无显著性变化,直径随胎龄增长而增大,面积和周长明显增大。结论:人胚胎三叉神经节细胞形态发育在7-8个月(32周)时达成年水平。

Objective：To observe the development of human embryonic trigeminal ganglion cells with the age increased.Method：embryonic trigeminal ganglion aged from19 to 32 weeks were observed by light microscopy,cells counted,and image analysis instrument measured the area,perimeter and diameter of trigeminal ganglion cells.Results：As the age increased,the number of trigeminal ganglion cells had no significant changes,but grown in diameter,the area and perimeter of cells increased significantly.Conclusion：The morphology development of trigeminal ganglion cells in human embryo reached adults’ levels at 7-8 months（32 weeks）.