中国畜牧兽医

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实验猴粪便样品中沙门氏菌LAMP检测方法的建立及应用

邱索平1,林志雄2,游勇来1,马保华2,赵琼1   

  1.  (1. 从化出入境检验检疫局,广东从化 510900;2.广东出入境检验检疫局,广东广州 510623)
  • 修回日期:2013-10-22 出版日期:2014-01-20 发布日期:2014-02-27
  • 作者简介:邱索平(1977-),男,安徽人,硕士,兽医师,研究方向:进出口非人灵长类实验动物人兽共患病防控技术。
  • 基金资助:

    广东检验检疫局科技计划项目(2009GDK24)。

Development and Application of Loop-mediated Isothermal Amplification Assay for Salmonella Detection in Fecal Samples of Experimental Monkeys

QIU Suo-ping1, LIN Zhi-xiong2, YOU Yong-lai1, MA Bao-hua2, ZHAO Qiong1   

  1.  
    (1.Conghua Entry-exit Inspection and Quarantine Bureau,Conghua 510900,China;
    2.Guangdong Entry-exit Inspection and Quarantine Bureau,Guangzhou 510623,China)
  • Revised:2013-10-22 Online:2014-01-20 Published:2014-02-27

摘要: 据GenBank数据库中沙门氏菌种特异性基因(fimY)的保守序列,试验设计1套特异性环介导等温扩增(LAMP)引物,建立了实验猴粪便中沙门氏菌的LAMP检测方法。该方法对沙门氏菌纯培养的敏感性可达1.35×101 CFU/mL,对临床样品的敏感性可达1.35×103 CFU/mL,检测敏感性与常规PCR方法相当;LAMP方法全部反应可在1 h内完成;可通过肉眼观察颜色直接判定结果;对其他常见病原体的检测结果均为阴性。结果表明建立的LAMP方法简便、快速、灵敏、特异,可用于粪便样品中沙门氏菌的快速检测。

关键词: 沙门氏菌; 环介导等温扩增; 粪便样品; 实验猴

Abstract: A loop-mediated isothermal amplification (LAMP) assay was developed for detection of Salmonlla in fecal samples of experimental monkeys. According to the specific sequences (fimY) of Salmonlla in GenBank, one set of primers was selected and the reaction condition was optimized. The results showed that the detection limit of LAMP method was 1.35×101 and 1.35×103 CFU/mL in Salmonella pure culture and clinical samples,respectively,which was the same as routine PCR. The amplification could complete in one hour, and the result could be distinguished by naked eyes. There was non-specific amplification of other pathogens. These results suggested that this LAMP assay was a simple and specific method for rapid detection of Salmonlla in fecal samples.

Key words: Salmomella; LAMP; fecal samples; experimental monkeys