ICU主动筛查分离的金黄色葡萄球菌黏附毒素和超抗原基因研究

Study on active screening of adhesion toxin and superantigen genes in Staphylococcus aureus isolated from ICU patients

  • 摘要: 目的 调查ICU主动筛查分离的金黄色葡萄球菌黏附毒素和超抗原基因携带情况,为治疗和制定预防控制方案提供参考依据。方法 收集2013-2014年鼻拭子主动筛查的金黄色葡萄球菌46株,采用法国生物梅里埃公司产品chromID S.aureus平板筛查和Vitek-2细菌鉴定仪鉴定; 采用聚合酶链反应(PCR)法检测16种黏附毒素基因、20种超抗原基因。结果 46株金黄色葡萄球菌共检出9种黏附毒素基因、10种超抗原基因,黏附毒素基因总检出率达100.0%、超抗原基因总检出率达65.0%。结论 金黄色葡萄球菌黏附毒素和超抗原基因高检出率是造成ICU患者肺部或血流感染的重要原因。

     

    Abstract: OBJECTIVE To investigate the active screening of adhesion toxin and superantigen genes in Staphylococcus aureus isolated from ICU patients so as to provide guidance for development of prevention and control programs. METHODS From 2013 to 2014, a total of 46 strains of S.aureus that were isolated from nasal swab and given active screening were collected, then the strains were identified by using chromID S.aureus plate sreening and Vitek-2 bacterial identification system of BioMérieux, France, and 16 kinds of adhesion toxin genes and 20 kinds of superantigen genes were detected with the use of polymerase-chain-reaction (PCR). RESULTS Totally 9 kinds of adhesion toxin genes and 10 kinds of superantigen genes were detected in the 46 strains of S.aureus; the total detection rate of the adhesion toxin genes was 100.0%, and total detection rate of the superantigen genes was 65.0%. CONCLUSION The high detection rate of the adhesion toxin genes and superantigen genes in the S.aureus is the leading cause of pulmonary or bloodstream infection in the ICU patients.

     

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