中文摘要：

目的研究血管内皮生长因子（VEGF）和转化生长因子β激活性激酶1（TAK1）在正常皮肤及增生性瘢痕组织中的表达,并结合增生性瘢痕的形态学观察,探讨其在病理性瘢痕发病机制中的作用,为病理性瘢痕的临床治疗提供一定的依据与参考。方法采用常规HE、Masson染色、免疫荧光方法和荧光定量PCR法对10例来自体正常皮肤及15例增生性瘢痕进行VEGF和TAK1在组织中的定位与表达量的检测、病理形态学观察。结果形态学观察显示增生性瘢痕的表皮形态异常,增生性瘢痕组织中的真皮成纤维细胞较正常皮肤排列紊乱、致密。免疫荧光结果显示增生性瘢痕组织中VEGF和TAK1的表达强度明显高于正常皮肤组织。荧光定量PCR结果显示VEGF和TAK1在增生性瘢痕组织中表达均增强（P〈0.01,P〈0.05）。结论增生性瘢痕组织胶原纤维化程度明显高于正常皮肤组织,且瘢痕组织中VEGF与TAK1表达程度均高于正常组织,对增生性瘢痕的形成可能发挥促进作用。VEGF与TAK1可作为增生性瘢痕诊断与鉴别诊断的参考指标,为防治病理性瘢痕形成提供新的治疗靶点。

英文摘要：

Objective To observe the morphology of hypertrophic scar tissue and explore the expressions and distribution of vascular endothelial growth factor（ VEGF） and transforming growth factor beta activatedkinase 1（ TAK1） in these tissues. Method Hematoxylin-eosin staining,Masson staining,immunofluorescence,and real-time polymerase chain reaction were used to detect the localization and expression of VEGF and TAK1 in15 hypertrophic scar tissues and 10 normal skin tissues. Results Morphological observation showed that the dermal fibroblasts in hypertrophic scar were disorderly and densely arranged（ compared to the normal skin）.Immunofluorescence displayed that the expressions of VEGF and TAK1 in hypertrophic scar tissue were higher than in normal skin tissues. Real-time polymerase chain reaction showed the mRNA expressions of both VEGF and TAK1 were significantly higher in hypertrophic scar tissue than in normal tissue（ P〈0. 01, P〈0. 05,respectively）. Conclusions Hypertrophic scar tissue has higher collagen fibrosis degree and higher TAK1 and VEGF expressions than the normal skin. VEGF and TAK1 can be used as the reference indicators for the diagnosis and differential diagnosis of hypertrophic scar and serve as new therapeutic targets.