复方烫伤膏对大鼠深Ⅱ度烫伤模型的保护作用及机制研究

Study on protective effect and mechanism of Fufang Tangshang Gao on deep grade II skin burn in rats

目的:研究复方烫伤膏对大鼠深Ⅱ度烫伤创面的保护作用及作用机制。方法:建立大鼠深Ⅱ度烫伤模型,创面外用不同剂量复方烫伤膏,每天1次,连续21 d。在伤后不同时间点取材,测定药物对烫伤创面的创面愈合率、组织含水量、血管内皮生长因子(VEGF)的影响;测定药物对烫伤大鼠血液肿瘤坏死因子-α(TNF-α)、白细胞介素-1(IL-1)水平的影响。结果:复方烫伤膏(每克浸膏含生药0.4,0.2,0.1 g)可不同程度地提高大鼠烫伤创面不同时相点的创面愈合率;降低烫伤创面不同时相点的组织含水量;升高烫伤创面不同时相点的VEGF含量;降低烫伤大鼠血清不同时相点升高的TNF-α和IL-1水平。结论:复方烫伤膏对大鼠深Ⅱ度烫伤具有良好的保护作用,能明显促进大鼠深Ⅱ度烫伤创面愈合,减少创面组织含水量,其机制与增加烧伤创面组织VEGF合成和释放,降低烫伤大鼠血清TNF-α,IL-1水平等有关。

Objective： To observe the protective effect and mechanism of Fufang Tangshang Gao （FFTSG） on deep grade II burn wounds in rats. Method： The deep grade II skin burn model was established. FFTSG was adopted for wounds once everyday for 21 d. Samples were collected at different time points after burn to determine the wound healing rate, the wound tissues water content, VEGF, TNF-α and IL-1. Result： At different time points, FFFSG （0.4, 0.2, 0.1 g · g^-1 ） could increase the wound healing rate and VEGF content and decrease the tissues water content, TNF-α and IL-1. Conclusion： FFTSG shows a notable protective effect on deep grade II burn wounds in rats by obviously promoting the wound healing and decreasing the wound tissues water content. Its mechanisms may be related with the increase in VEGF synthesis and release of wound tissues and the decrease in TNF-α and IL-1 in rat blood serum.