检验医学 ›› 2022, Vol. 37 ›› Issue (9): 860-863.DOI: 10.3969/j.issn.1673-8640.2022.09.013

• 技术研究与评价·论著 • 上一篇    下一篇

环介导等温扩增技术快速检测粪便样本艰难拟梭菌的临床应用

王诗淇1, 李荷楠1(), 刘井波1, 王占伟1, 王知任1, 迟大利2, 王辉1   

  1. 1.北京大学人民医院检验科,北京 100044
    2.复星诊断科技(上海)有限公司参考检测中心,上海 200444
  • 收稿日期:2021-10-16 修回日期:2022-06-18 出版日期:2022-09-30 发布日期:2022-10-25
  • 通讯作者: 李荷楠
  • 作者简介:李荷楠,E-mail: lhnpku@163.com
    王诗淇,女,1983年生,学士,主管检验师,主要从事微生物学检验技术研究。
  • 基金资助:
    国家科技重大专项(2018ZX10732401-003-016)

Application evaluation of loop-mediated isothermal amplification in determining Clostridioides difficile in fecal samples

WANG Shiqi1, LI Henan1(), LIU Jingbo1, WANG Zhanwei1, WANG Zhiren1, CHI Dali2, WANG Hui1   

  1. 1. Department of Clinical Laboratory,Peking University People's Hospital,Beijing 100044,China
    2. Reference Testing Center,Fosun Diagnostics(Shanghai) Co. Ltd.,Shanghai 200444,China
  • Received:2021-10-16 Revised:2022-06-18 Online:2022-09-30 Published:2022-10-25
  • Contact: LI Henan

摘要:

目的 评价环介导等温扩增技术(LAMP)快速检测粪便样本中艰难拟梭菌的临床应用价值。方法 收集132例临床送检粪便样本,分别采用LAMP法、培养法、艰难拟梭菌毒素法进行检测,比较3种方法检测艰难拟梭菌的一致性;以培养法为标准,评价LAMP法检测艰难拟梭菌的灵敏度和特异性。结果 AMP法检测艰难拟梭菌的灵敏度为105CFU/mL;LAMP法艰难拟梭菌检出率(13.64%)高于培养法(11.11%,χ2=18.74,P<0.05)和艰难拟梭菌毒素法(9.09%,χ2=35.94,P<0.05)。培养法检测出的11种细菌和2种真菌,LAMP法检测结果均为阴性。结论 与培养法和艰难拟梭菌毒素法相比,LAMP法具有特异性强,反应时间短等优势,且无交叉反应,在艰难拟梭菌快速检测中具有一定的价值。

关键词: 艰难拟梭菌, 环介导等温扩增技术, 快速检测

Abstract:

Objective To evaluate a loop-mediated isothermal amplification(LAMP) for the rapid determination of Clostridioides difficile in fecal samples from patients. Methods Totally,132 clinical fecal samples were collected and determined by LAMP,bacterium culture and toxin Clostridioides difficile assay,respectively. The consistency of the 3 methods was evaluated. The specificity and sensitivity were evaluated. Results The sensitivity of LAMP for determing Clostridioides difficile reached 105 CFU/mL. The positive rate of LAMP(13.64%) was higher than that of bacterium culture(11.11%,χ2=18.74,P<0.05) and that of toxin Clostridioides difficile assay(9.09%,χ2=35.94,P<0.05). The LAMP showed all negative for the 11 bacteria and 2 fungi determined by bacterium culture. Conclusions Compared with bacterium culture and toxin Clostridioides difficile assay,the LAMP surpasses in good specificity and short reaction time. It can be regarded as a rapid determination method for Clostridioides difficile.

Key words: Clostridioides difficile, Loop-mediated isothermal amplification, Rapid determination

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