紫草油剂促进兔创面修复及碱性成纤维细胞生长因子表达

目的:通过观察创面修复过程中创面的组织学变化、创面愈合率以及碱性成纤维细胞生长因子(basic fibroblast growth factor,bFGF)的表达,探讨紫草油剂促进创面愈合的可能机制。方法:采用新西兰白兔制作皮肤创面模型,分为紫草油剂组和凡士林组,分别用紫草油剂和凡士林进行创面治疗。观察创面修复不同时期创面愈合率、组织形态学、电镜下超微结构的变化。采用Western blotting法观察bFGF的表达。结果:紫草油剂组创面愈合率高于凡士林组,差异有统计学意义(P<0.05)。紫草油剂组创面组织的成纤维细胞、胶原和毛细血管数较凡士林组明显增多。bFGF的表达在创面修复的各个时期均明显高于凡士林组。两组创面组织的灰度值比较有统计学差异。创面愈合率与创面组织中bFGF的表达呈平行关系。在创面修复的不同阶段,作为内参的β-actin都有表达且无明显变化。结论:紫草油剂可能是通过提高创面组织bFGF的表达,从而促进创面的修复过程。

Arnebia root oil promotes wound healing and expression of basic fibroblast growth factor on the wound surface in rabbits

Objective: To observe the promoting effect of arnebia root oils on expression of basic fibroblast growth factor (bFGF) in skin wound of rabbits and the histomorphological changes in the wound surface, and to discuss its mechanism. Methods: Bilateral round skin wounds were made on the back of 15 rabbits. The three wounds on one side of the back of each rabbit were treated with arnebia root oils, while the three wounds on the other side were treated with vaseline in order to promote the wound healing. The histomorphology and ultrastructure under electron microscopy of the wounds,and the rate of wound healing were examined at different time. Western blotting assay was used to detect the expression of bFGF in the wound surface. Results: The healing rate of the arnebia root oils-treated wounds was evidently higher than that of the vaseline-treated wounds (P<0.05). The quantities of fibroblast, collagen and capillary in the arnebia root oils-treated wounds were much more than those in the vaseline-treated wounds, and the expression of endogenous bFGF in the arnebia root oils-treated wounds was enhanced obviously as compared with that in the vaseline-treated wounds in different period of wound healing. There existed a parallel correlation between the expression level of bFGF and the rate of wound healing. Conclusion: The promoting effect of arnebia root oils on wound healing may be related to increasing the expression level of basic fibroblast growth factor in the skin wound.