肝细胞生长因子修复周围神经损伤研究

目的 探讨肝细胞生长因子(hepatocyte growth factor,HGF)对周围神经损伤修复的作用.方法 以Wistar大鼠坐骨神经挤挫伤为动物模型,神经损伤局部肌肉注射腺病毒介导的人肝细胞生长因子(Ad-HGF),与无注射HGF组对照,通过步态分析、肌肉湿重测定、计算机图像分析等指标评价神经损伤后再生效果.结果 术后4周,在坐骨神经指数、肌肉湿重恢复、计算机图像分析等再生指标的比较中,注射HGF组明显强于对照组(P<0.05).结论 HGF能促进大鼠坐骨神经损伤后的有髓纤维再生和功能恢复,是一种有效的治疗周围神经损伤的神经营养因子.

Effect of hepatocyte growth factor on peripheral nerve regeneration

Objective To explore the effect of hepatocyte growth factor on peripheral nerve regeneration. Methods Sciatic nerve contusion injury was made by a custom-made clamp in Wistar rats,in which human hepatocyte growth factor expressed by adenoviral vector(Ad-HGF)was injected into the muscle around the injured nerve.The results of nerve regeneration were evaluated by sciatic nerve function index(SFI),muscle wet weight,neural electrophysiology and image analysis. Results Four weeks after sciatic nerve injury,the results of sciatic nerve function index(SFI),muscle wet weight,neural electrophysiology and image analysis showed better nerve regeneration in group injected with HGF than control group(P<0.05). Conclusion Hepatocyte growth factor can promote axon regeneration and functional recovery and is an effective neurotrophic factor for peripheral nerve regeneration after injury.