首都医科大学学报 ›› 2001, Vol. 22 ›› Issue (4): 288-291.

• 论著 • 上一篇    下一篇

不同年龄家兔单侧臂丛切断后后根神经节神经元数量的变化

刘娜1, 徐群渊2, 景鹏1, 蔡青2, 杨连雪1   

  1. 1. 首都医科大学解剖学教研室;2. 首都医科大学神经科学研究所
  • 收稿日期:2001-08-27 修回日期:1900-01-01 出版日期:2001-10-15 发布日期:2001-10-15

Changing of Neurons in the Dorsal Root Ganglion after an Injure of the Peripheral Nerve in Rabbits with Different Ages

Liu Na1, Xu Qunyuan2, Jing Peng1, Cai Qing2, Yang Lianxue1   

  1. 1. Department of Anatomy, Capital University of Medical Sciences;2. Beijing Institute for Neuroscience, Capital University of Medical Sciences
  • Received:2001-08-27 Revised:1900-01-01 Online:2001-10-15 Published:2001-10-15

摘要: 为观察单侧臂丛切断术对不同年龄家兔脊髓颈膨大部C4~T2双侧后根神经节神经元数量变化的影响,对12例不同年龄的家兔行左侧臂丛切断术,3个月后对其脊髓颈膨大部C4~T2双侧后根神经节神经元进行观察计数,并对胞体及核仁的大小进行测量.细胞计数以核仁为指标,并根据Konigsmark法进行校正,对后根节的细胞及核仁的测量则借助图像分析仪进行,测量细胞共计1200个.结果显示臂丛切断侧脊髓颈膨大部后根节神经元缺失显着,后根节神经元缺失多发生在中、小型神经元,对年幼动物影响更为明显.

关键词: 后根神经元, 细胞数量, 臂丛切断

Abstract: To observe the changes of the cell body and nucleolus of neurons in the dorsal root ganglion of rabbits with different ages after an injure in the peripheral processes of those neurons, the brachial plexus were transected unilaterally in 12 rabbits in ages with 0, 1, 2, 3, 4 and 8 weeks, respectively. The cell numbers were counted and the sizes of cell bodies and nucleoli were measured bilaterally in the dorsal root ganglia from the segments of C4~T2 after 3 months of the operation. The nucleolus was selected as the counted unit and counted number was corrected according to K.. onigsmark's formula. The measurements of cell bodies and nucleoli were done with a device of image analyzer and 1 200 neurons were randomly selected to be measured. The results showed that the cell number of dorsal root ganglia from the lesion side of C4~T2 was markedly decreased compared with normal side after transecting of the plexus. The neurons with small or medium size were decreased even more distinctly among those decreased neurons. In addition, the cell loss was more seriously in younger animals than that in those older ones.

Key words: dorsal root ganglia, neuronal number, brachial plexus transaction

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