肺炎克雷伯菌对复方新诺明的耐药性及其整合子分布差异的研究

来源 :浙江医学 | 被引量 : 0次 | 上传用户:Lyben
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目的 探讨肺炎克雷伯菌对复方新诺明的耐药性、整合子分布及其对耐药性的影响.方法 收集温州医科大学附属第一医院2013年1月至2015年5月临床分离的肺炎克雷伯菌共812株,采用VITEK 2 Compact全自动微生物分析仪测定肺炎克雷伯菌临床分离株对临床常用的以复方新诺明为代表的抗菌药物耐药性,PCR方法筛查其Ⅰ、Ⅱ、Ⅲ型整合子,分析不同耐药表型菌株内整合子分布的差异.结果 肺炎克雷伯菌对多种抗菌药物耐药率呈上升趋势,仅对复方新诺明耐药率呈逐年递减趋势,亚胺培南和厄他培南耐药肺炎克雷伯菌对复方新诺明保持相对较低的耐药率;肺炎克雷伯菌中Ⅰ型整合子总阳性率为37.2%,未检测到Ⅱ、Ⅲ型整合子,复方新诺明耐药菌株组Ⅰ型整合子阳性率明显高于敏感组(P<0.01);整合子阳性菌株组对临床常用抗菌药物的非敏感率(中介率与耐药率之和)几乎均明显高于整合子阴性菌株组(均P<0.05);复方新诺明耐药组和敏感组中,多重耐药菌株的Ⅰ型整合子阳性率均显著高于非多重耐药菌株,广泛耐药菌株的Ⅰ型整合子阳性率也均显著高于非广泛耐药菌株(均P<0.01).结论 2013至2015年,肺炎克雷伯菌仅对复方新诺明的耐药率呈现逐年降低趋势,且耐碳青霉烯肺炎克雷伯菌对复方新诺明敏感性良好;肺炎克雷伯菌主要携带Ⅰ型整合子,由整合子介导的耐药基因的传播与复方新诺明耐药性、多重耐药表型、广泛耐药表型均密切相关.
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