EGF、bFGF对兔自体穿透角膜移植伤口愈合的影响

目的 观察表皮生长因子（EGF）、碱性成纤维细胞生长因子（bFGF）对自体家兔穿透性角膜移植（PKP）术后伤口愈合的影响。方法 利用家兔自体穿透性角膜移植模型，采用测量伤口愈合强度、液闪计数、AgNORs染色、VG染色和电镜等方法，观察家兔PKP术后伤口愈合情况。结果 （1）EGF、bFGF、EGF bFGF点眼均能增加伤口所能承受的极限压力和∧3H-TdR的掺入率。（2）bFGF和EGF bFGF点眼能刺激伤口处成纤维细胞及其所分泌的胶原纤维呈比较规则的排列。结论 （1）EGF、bFGF、EGF bFGF点眼均能增加PKP术后伤口愈合的强度，增加伤口愈合时DNA的合成。（2）术后14d以后EGF和bFGF联合点眼对伤口愈合的促进作用仅相当于单独用bFGF点眼的水平。（3）bFGF能提高PKP术后伤口愈合的质量。

Effects of EGF and bFGF on wound healing after penetrating keratic autoplasy in rabbits

Objective　To observe the effects of epithelial growth factor (EGF) and basic fibroblast growth factor (bFGF) on wound healing of the penetration keratoplasty (PKP) with autograft in rabbits. Methods　After the establishment of penetrating keratic autograft model on 24 rabbits, they were equally divided into EGF-, bFGF-, EGF+bFGF-treated and control groups. The wound healing of all the animals were observed with healing intensity, liquid scintillation counter, AgNORs staining, VG staining and transmission electron microscopy. Results　①EGF, bFGF, and EGF+bFGF increased the limiting pressure of the wounds and the 3H-TdR incorporation. ②The fibroblast cells and its secreting proliferative collagen in both the bFGF group and EGF+bFGF group were more well-arranged. Conclusion　①EGF, bFGF, EGF+bFGF can obviously elevate the intensity of wound healing after PKP and enhance the synthesis of DNA. ②The effect of this agent combination is just as the same as bFGF applied alone 14 d after the operation. ③bFGF can improve the quality of wound healing after PKP.