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三七对铜绿假单胞菌密度感应相关毒力因子表达的影响 被引量:3

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摘要 目的:通过观察三七对铜绿假单胞菌(Pseudomonas aeruginosa,PA)密度感应(Quorum sensing,QS)相关毒力因子表达变化的影响,探讨其作用机制。方法:用不同浓度三七与细菌共培养,采用弹性蛋白-刚果红降解试验测定弹性蛋白酶活性;采用紫外分光光度法测定绿脓菌素分泌量;结晶紫染色法观察生物被膜形成量;检测细菌在含三七琼脂平板中的集群运动与泳动能力。结果:三七在25mg/ml、12.5mg/ml和6.25mg/ml浓度下对弹性蛋白酶活性、绿脓菌素分泌有显著抑制作用,并能减少生物被膜形成。12.5mg/ml三七作用后细菌泳动能力受到抑制而集群运动无显著变化。结论:三七对铜绿假单胞菌密度感应相关毒力因子表达均有抑制作用,提示三七可以抑制铜绿假单胞菌密度感应功能,三七可能是铜绿假单胞菌密度感应抑制剂。
出处 《中国中医药科技》 CAS 2013年第5期479-481,共3页 Chinese Journal of Traditional Medical Science and Technology
基金 湖北省自然科学基金No.2011CDB302 武汉市卫生局临床医学科研项目No.WX12A06
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参考文献13

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同被引文献23

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