碱性成纤维细胞生长因子在大鼠坐骨神经损伤修复中的作用

目的　研究碱性成纤维细胞生长因子（ｂ Ｆ Ｇ Ｆ）对周围神经损伤的促修复作用。方法　建立大鼠坐骨神经离断模型，镜下进行神经外膜缝合，局部滴加药物和术后肌注ｂ Ｆ Ｇ Ｆ 以及临床用药神经生长因子（ Ｎ Ｇ Ｆ），通过神经传导速度和功能指数评定观察坐骨神经修复情况。结果　术后１ 个月，以正常对照为标准，０ 基线为正常水平，生理盐水、 Ｎ Ｇ Ｆ、ｂ Ｆ Ｇ Ｆ 使用组神经功能指数评定结果分别为：－ １１４．３０±１０．３４、－ ７０．５０±１１．０１、－ ５０．４５±７．８２；术后３ 个月，分别为：－ ５４．９６±１６．４６、－ ３５．２１±１０．８０、－ ２７．５３±１１．２３，ｂ Ｆ Ｇ Ｆ组神经传导速度明显快于生理盐水组和 Ｎ Ｇ Ｆ 组（ Ｐ＜ ０．０１）。结论　ｂ Ｆ Ｇ Ｆ对坐骨神经损伤具有显著的促功能修复作用，并且在神经损伤早期就能最有效地发挥作用，效果明显优于临床用药 Ｎ Ｇ Ｆ。

EFFECT OF BASIC FIBROBLAST GROWTH FACTOR ON REPAIRING TRANSECTED SCIATIC NERVE IN RATS

OBJECTIVE: To investigate the effects of basic fibroblast growth factor(bFGF) on repairing transected sciatic nerves in rats. METHODS: The animal models of the transected sciatic nerve of 40 SD rats were established, which divided into 4 groups: normal saline (NS) group, nerve growth factor (NGF) group, bFGF group and normal control group. The epineurium of the transected sciatic nerve was sutured under microscope, then bFGF or NGF was dropped into local sites and injected intramuscularly once a day for 30 days after operation. Functional repair for the transected sciatic nerves was studied by nerve conductive velocity (NCV) and sciatic nerve function index (SFI). RESULTS: As a criterion, the level of the normal control group was regarded as zero, SFI of NS group, NGF group and bFGF group were -114.30 +/- 10.34, -70.50 +/- 11.01, -50.45 +/- 7.82 respectively at 1 month after operation, and they were -54.96 +/- 16.46, -35.21 +/- 10.80, -27.53 +/- 11.23 respectively in 3 months after operation. NCV of bFGF group was significantly faster than NS group and NGF group. CONCLUSION: bFGF can significantly promote the functional repair of injured peripheral nerve, and its effects are better than NGF.