检验医学 ›› 2022, Vol. 37 ›› Issue (11): 1030-1033.DOI: 10.3969/j.issn.1673-8640.2022.011.006

• 临床应用研究·论著 • 上一篇    下一篇

临床血液和尿液样本分离肠球菌毒力基因分析

康怡1, 朱宏2, 沈瀚2, 周万青2()   

  1. 1.南京医科大学鼓楼临床医学院,江苏 南京 210008
    2.南京大学医学院附属鼓楼医院检验科,江苏 南京 210008
  • 收稿日期:2021-03-29 修回日期:2021-06-28 出版日期:2022-11-30 发布日期:2022-12-26
  • 通讯作者: 周万青
  • 作者简介:周万青,E-mail:zwq_096@163.com
    康怡,女,1995年生,硕士,住院医师,主要从事感染控制工作。
  • 基金资助:
    南京市医学科技发展基金项目(YKK17056)

Virulence gene analysis of Enterococcus isolated from clinical blood and urine samples

KANG Yi1, ZHU Hong2, SHEN Han2, ZHOU Wanqing2()   

  1. 1. Nanjing Drum Tower Hospital,the Clinical College of Nanjing Medical University,Nanjing 210008,Jiangsu,China
    2. Department of Clinical Laboratory,Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,Jiangsu,China
  • Received:2021-03-29 Revised:2021-06-28 Online:2022-11-30 Published:2022-12-26
  • Contact: ZHOU Wanqing

摘要:

目的 分析分离自临床血液样本和尿液样本的肠球菌毒力基因携带情况。方法 收集2017-2019年南京医科大学鼓楼临床医学院分离自临床血液样本和尿液样本的粪肠球菌(93株)和屎肠球菌(103株)。采用聚合酶链反应(PCR)检测肠球菌毒力基因(cylAespasa1、hylgelEagg),比较不同菌种和不同来源菌株毒力基因表达的差异。结果 93株粪肠球菌主要携带asa1(76.3%)、gelE(71.0%)、cylA(64.5%)、esp(60.2%)和agg(22.6%)基因,未检出hyl基因。103株屎肠球菌主要携带esp(68.9%)和hyl(31.1%)基因,未检出cylAasa1、gelEagg基因。血液样本分离粪肠球菌以gelE基因检出率(75.0%)最高;尿液样本分离粪肠球菌以asa1基因检出率(85.7%)最高。尿液样本分离粪肠球菌cylAasa1基因检出率高于血液样本(P<0.05);屎肠球菌esp基因检出率高于血液样本(P<0.05)。结论 粪肠球菌比屎肠球菌携带更多种毒力因子,不同样本来源肠球菌毒力基因的分布存在差异。

关键词: 肠球菌, 毒力基因, 尿路感染, 血流感染

Abstract:

Objective To analyze the carrying condition of virulence gene of Enterococcus isolated from clinical blood and urine samples. Methods Totally,93 isolates of Enterococcus faecalis and 103 isolates of Enterococcus faecium were collected in Nanjing Drum Tower Hospital of Clinical College of Nanjing Medical University from 2017 to 2019. Six virulence genes,including cylAespasa1,hylgelE and agg,of Enterococcus were determined by polymerase chain reaction(PCR),and the differences of virulence genes in different isolates and from different sources were compared and analyzed. Results The 93 isolates of Enterococcus faecalis mainly carried asa1(76.3%),gelE(71.0%),cylA(64.5%),esp(60.2%) and agg(22.6%),and no hyl was determined. Enterococcus faecium mainly carried esp(68.9%) and hyl(31.1%),and cylAasa1,gelE and agg were not determined. For blood samples,the determination rate of gelE was the highest(75.0%). For urine samples,the determination rate of asa1 was the highest(85.7%). The virulence genes of cylA and asa1 determined in Enterococcus faecalis isolated from urine samples were higher than those isolated from blood samples(P<0.05),and the virulence gene of esp determined in Enterococcus faecium isolated from urine samples was higher than that isolated from blood samples(P<0.05). Conclusions Enterococcus faecalis carrys more virulence genes than Enterococcus faecium,and the distribution of virulence genes of Enterococcus is different from different sample sources.

Key words: Enterococcus, Virulence gene, Urinary tract infection, Bloodstream infection

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