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首页> 外文期刊>Neuroscience Letters: An International Multidisciplinary Journal Devoted to the Rapid Publication of Basic Research in the Brain Sciences >Local delivery of controlled released nerve growth factor promotes sciatic nerve regeneration after crush injury
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Local delivery of controlled released nerve growth factor promotes sciatic nerve regeneration after crush injury

机译:挤压伤后局部释放受控释放的神经生长因子促进坐骨神经再生

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摘要

Controlled released nerve growth factor (NGF)-microspheres are able to enhance peripheral nerve regeneration across short nerve gaps. However, such beneficial effect has never been investigated in crush injury model in vivo. The present study was designed to investigate such a possibility. The rats subjected to sciatic nerve crush injury were intraperitoneally administrated daily for 4 weeks with NGF or normal saline or locally injected controlled released NGF-microspheres only once. Sham operation group without injury was defined as normal group. Nerve regeneration was investigated by morphometric analysis. The recovery of nerve function was estimated by electrophysiological analysis, behavioral tests and morphometric observation of the denervated muscles. The results showed that both NGF and NGF-microspheres improved nerve regeneration and recovery of nerve function. In addition, NGF-microspheres achieved better results than NGF group. These findings show that this controlled released NGF-microspheres could enhance the beneficial effect of NGF on nerve regeneration and recovery of motor and sensory function after sciatic nerve crush injury in rats, indicating that the NGF-microspheres have the potential to be a neuroprotective agent for nerve crush injury repair applications.
机译:受控释放的神经生长因子(NGF)-微球能够增强跨神经短间隙的周围神经再生。然而,从未在体内的挤压损伤模型中研究这种有益效果。本研究旨在调查这种可能性。每天给大鼠坐骨神经压迫性损伤腹膜内注射NGF或生理盐水4周,或局部注射控释NGF微球一次。将无损伤的假手术组定义为正常组。通过形态计量学分析神经再生。通过电生理分析,行为测试和对失神经肌肉的形态学观察来估计神经功能的恢复。结果表明,NGF和NGF微球均能改善神经再生和神经功能的恢复。另外,NGF微球比NGF组效果更好。这些发现表明,这种受控释放的NGF微球可以增强NGF对大鼠坐骨神经挤压伤后神经再生以及运动和感觉功能的恢复的有益作用,表明该NGF微球具有作为神经保护剂的潜力。神经挤压伤修复应用。

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