Morphological study on the collaterals developed by one axon during peripheral nerve regeneration

作者：Yin, Xiao Feng; Kou, Yu Hui; Wang, Yan Hua; Zhang, Pei Xun; Zhang, Dian Yin; Fu, Zhong Guo; Zhang, Hong Bo; Jiang, Bao Guo^*

来源：Artificial Cells, Nanomedicine and Biotechnology, 2014, 42(3): 217-221.

DOI：10.3109/21691401.2013.800082

• collateral
• peripheral nerve
• rat
• reconstruction
• sprout

Outgrowth of collateral sprouts from axons is a natural process that arises during development of and regeneration in the peripheral nervous system. Our previous study showed that if there are enough distal endoneurial tubes into which the proximal regenerative axons can grow, one axon can support three to four collaterals, at most. Here, the proximal half tibial nerve was fi xed to the distal stump and served as the donor nerve. The number of myelinated axons was calculated after 4 months. The ratio of distal regenerative myelinated axon number to proximal donor nerve axon number was 1.83 with the tibial function index and the nerve conduction velocities of -48.6 +/- 6.8 and 27.8 +/- 5.3 m/s. The regenerated collaterals were isolated and observed to sprout from the node of Ranvier with almost the same features of normal fi bers, but with diff erent electrophysiological characteristics. This fi nding shows the evidence of one-axon trunk several-collateral model in peripheral nerve regeneration and suggests that such multicollateral regeneration model may be useful in peripheral nerve reconstruction.

• 出版日期2014-6
• 单位北京大学