Objective:To study the influences on expression of vascular endothelium growth factor(VEGF) and nervous conduction by improving microcirculation following crushing lesion of sciatic nerve in rats. Methods:Sciatic nerve was crushed used pincers to establish the model of sciatic nerve crush lesion in rats. The expression of VEGF in dorsal ganglion cells at 12 h,72 h,7 th days and the distance between right behind toes, nerve conduction velocity of sciatic nerve at 4th week were examined respectively by immunohistochemical and electrophysiologic techniques. Then their results were compared with each other. SD rats were divided into control group, model group, alprostadil(Lipo-PGE1) group and buflomedil hydrochloride group at random. There were 16 rats in each group. SPSS 10.0 was used statistically. Results:①The expression of VEGF in dorsal ganglion cells increased from 12 h after crush injury of the nerve, and have increased to the highest at 72 h after crush injury of the nerve(P < 0.01). There was no increasing of it in normal group. It increased in alprostadil group and buflomedil hydrochloride group more than model group significantly(P < 0.01). It became normal on 1 th week in all groups after sciatic nerve crush injury. ②On 4th week after sciatic nerve crush injury, distance between right behind toes and nervous conduction velocity of sciatic nerve in alprostadil group and buflomedil hydrochloride group were more optimal than those in model group(P < 0.01) and no more optimal than those in normal group(P < 0.05), while there was normal in control group. Conclusion:The expression of VEGF increase and the nervous conduction velocity of sciatic nerve elevate by improving microcirculation significantly after sciatic nerve crush lesion, so that it has improving action to repair peripheral nerve crush lesion.
王建立,唐金荣,苏建华,侯熙德,张平,朱学江,吴乐,肖杭.改善神经微循环对受压大鼠坐骨神经VEGF表达及神经传导速度的影响[J].南京医科大学学报(自然科学版英文版),2007,(6):598-601.