碳青霉烯类耐药肠杆菌科细菌基因型检测及耐药性分析
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福建医科大学附属第一医院检验科,福建医科大学附属第一医院检验科,福建医科大学附属第一医院检验科,福建医科大学附属第一医院检验科,福建医科大学附属第一医院检验科

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R446.5

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福建省自然科学基金资助项目(2015J0105)


Genotypic detection and drug resistance analysis of carbapenem resistant Enterobacteriaceae
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The First affiliated Hospital Of Fujian Medical University,,,,

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    摘要:

    目的 了解本院碳青霉烯类耐药的肠杆菌科细菌(Carbapenem Resistant Enterobacteriaceae,CRE)的基因型分布及耐药情况。方法 收集本院临床标本分离的613株CRE,并对其进行常规鉴定及药敏试验,随机选取了68株CRE进行PCR扩增,检测碳青霉烯酶的 bla <sub>KPC</sub>、bla <sub>IMP-1</sub>、bla<sub> VIM-1</sub>、bla <sub>OXA-48</sub>及bla <sub>NDM-1</sub>等基因;PCR阳性结果进行DNA测序,随后进行BLAST比对,并确定其基因型。 结果 检出的613株CRE分布如下:548株肺炎克雷伯菌,36株大肠埃希菌,19株阴沟肠杆菌,5株弗劳地枸橼酸杆菌,3株产气肠杆菌和2株变形杆菌。PCR扩增和DNA测序具体结果如下:58株bla<sub> KPC-2</sub>,5株bla <sub>NDM-1</sub>和5株bla <sub>IMP-1</sub>,未检出bla<sub> VIM-2</sub>和bla <sub>OXA-48</sub>目的基因。 结论 CRE的检出数量呈现逐年上升的趋势,并对临床常用抗菌药物表现为多重耐药模式;bla<sub> KPC-2</sub>型是PCR检出的主要基因型。医疗机构应加强院感监测、预防和控制CRE菌株在院内扩散传播流行,不断降低CRE感染的风险。

    Abstract:

    Objective To understand the genotype distribution and antibiotic resistance of CRE in our hospital. Methods 613 clinical isolates of CRE in our hospital were collected, and then routine drug sensitivity tests were carried out, and the results of drug sensitivity were analyzed. Then, 68 CRE strains were randomly selected for PCR amplification to detect the BLA KPC, BLA IMP-1, BLA VIM-1, BLA OXA-48 and Bla NDM-1 genes of carbapenems. The final PCR positive results were sequenced by DNA, and the BLAST alignment was used to determine the genotype of CRE. Result 613 strains of CRE were as follows: Klebsiella pneumoniae 548 strains, 36 strains of Escherichia coli, 19 strains of Enterobacter cloacae, Citrobacter freundii 5 strains, 3 strains of Enterobacter aerogenes, Proteus mirabilis 2 strains. The results of PCR amplification and DNA sequencing were as follows: 58 strains were bla KPC-2, 5 strains were bla NDM-1 and 5 strains were bla IMP-1, and Bla VIM-2 and Bla OXA-48 were not detected. Conclusions The number of CRE is increasing year by year, and it is multidrug resistant to clinical antibiotics, and Bla KPC-2 is the main type of CRE . Medical institutions should strengthen the sense of hospital monitoring to prevent and control the spread and spread of CRE strains.

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甘龙杰,陈善建,林宇岚,陈守涛,杨滨.碳青霉烯类耐药肠杆菌科细菌基因型检测及耐药性分析[J].临床检验杂志,2018,(9):663-666

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  • 收稿日期:2018-03-29
  • 最后修改日期:2018-06-26
  • 录用日期:2018-09-19
  • 在线发布日期: 2018-10-31
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