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首页> 外文期刊>Artificial cells, blood substitutes, and biotechnology >Histological analysis of single peripheral nerve fiber in acute nerve elongation process
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Histological analysis of single peripheral nerve fiber in acute nerve elongation process

机译：急性神经伸长过程中单个周围神经纤维的组织学分析

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摘要

To observe the histological alterations of single nerve fiber structures after nerve elongation by employing a rabbit peroneal nerve stretching model. 14 rabbits weighing mean 3. 0 kg (2.02-3.31kg.) were used in the experiment. Two rabbits were used as control when only a sham operation was done (group one, 0% stretch). Acute stretching of the peroneal nerves to elongate them by 10% was done in 6 rabbits (group two, 10% elongation) and by 20% (group three, 20% elongation) in another 6 rabbits. All animals were evaluated by tissue staining technology in a teased-fiber study. The internodal lengths were measured, and nodes of Ranvier and Schmidt-Lanterman notch were observed. The nerve fiber length was increased after stretching. The mean internodal length was 1208.31μm in group one, 1347.26μm in group two, and 1411.35μm in group three. Compared with the control group, mean internodal length was elongated by 11.50% in group two and 16.80% in group three. The difference was statistically significant. The node of Ranvier and Schmidt-Lanterman notch was wider in both group two and group three. Rupture of nerve fiber at the node of Ranvier was observed in group three. The peroneal nerve in rabbits can adapt to mild stretching by internodal length elongation. Elongation by 20% will cause structural rupture and therefore is the limit for nerve elongation.
机译：通过采用兔腓神经拉伸模型，观察神经伸长后单神经纤维结构的组织学变化。实验中使用了14只重均值为3的兔子。0kg（2.02-3.31kg。）。当仅进行假手术时，将两只兔子用作对照（第一组，0％拉伸）。 6只兔子（第二组，伸长率10％）对腓神经进行急性拉伸以使其伸长10％，另外6只兔子进行20％（第三组伸长率20％）。在组织纤维染色研究中，通过组织染色技术对所有动物进行了评估。测量节间长度，并观察到Ranvier和Schmidt-Lanterman缺口的节点。拉伸后神经纤维长度增加。第一组的平均节间长度为1208.31μm，第二组的平均节间长度为1347.26μm，第三组的平均节间长度为1411.35μm。与对照组相比，第二组的平均节间长度延长了11.50％，第三组的平均节间长度延长了16.80％。差异具有统计学意义。在第二组和第三组中，Ranvier和Schmidt-Lanterman缺口的节点都更宽。在第三组中观察到Ranvier节点的神经纤维破裂。兔的腓神经可以通过节间长度延长适应轻度拉伸。伸长20％将导致结构破裂，因此是神经伸长的极限。

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