封闭负压引流技术对人肉芽创面中MMP-1、MMP-2、MMP-13 mRNA表达的影响

目的　研究人慢性创面在经封闭负压引流 (Vacuum assistedclosure ,VAC)治疗前后 ,创面肉芽组织中基质金属蛋白酶MMP1、MMP2和MMP13mRNA的变化。方法　对 5例慢性创面患者给予VAC治疗 (- 12 0mmHg压力 ) ,分别于吸引前和吸引后 1、4、7d切取创面中央适当大小的肉芽组织 ,提取总RNA ,利用RT PCR方法测定MMP 1、MMP 2和MMP 13mRNA的表达情况 ,并对其定量结果进行统计学分析。结果　MMP 1、13mRNA在VAC治疗后表达下降 ,以MMP 13下降趋势尤为明显 (P <0 0 5 )。MMP 2mRNA表达呈现波动 ,但总体为下降趋势。结论　VAC通过抑制MMP 1、2、13的mRNA表达进而抑制MMP 1、2、13的蛋白合成 ,抑制胶原和明胶的降解 ,促进慢性创面的愈合。

Effects of vacuum-assisted closure (VAC) on the expressions of MMP-1, 2, 13 in human granulation wound

Objective To study the changes of metalloproteinases 1, 2, 13 in granulation wound after the treatment of vacuum-assisted closure (VAC). Methods The chronic wounds in 5 patients were treated with VAC. The expressions of MMP-1, 2, 13 in the granulation tissues of the chronic wounds were determined and quantified using RT-PCR technique before and at 1, 4, 7 days after the treatment. Results The MMP-1, 13 mRNA showed obvious decrease, with the steepest variation of MMP-13. The MMP-2 mRNA also showed a decreased tendency, though in an undulatory fashion. Conclusion VAC can promote healing of chronic wounds through depressing the expressions of MMP-1, 2, 13 mRNA and protein synthesis, depressing the degradations of collagen and gelatin. ;