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中国防痨杂志 ›› 2010, Vol. 32 ›› Issue (9): 104-108.

• 论著 • 上一篇    下一篇

rRNA扩增方法对结核分枝杆菌临床诊断作用的评估

夏辉1; 尚美1; 刘冠1; 李辉2; 王海英3; 闫国蕊2; 杨红艺3; 马晓光3; 景辉3; 赵雁林1;   

  1. 1.北京市结核病胸部肿瘤研究所; 2.河南疾病预防控制中心;3. 山东省胸科医院;
  • 出版日期:2010-09-20 发布日期:2010-09-20

Evaluation of rRNA amplification assay for detection of Mycobacterium tuberculosis

Xia Hui1; Shang Mei1; Liu Guan1; Li Hui2; Wang Haiying3; Yan Guorui2; Yang Hongyi3; Ma Xiaoguang3; Jing Hui3; Zhao Yanlin1   

  1. 1.Beijing Tuberculosis and Thoracic Tumor Research Institute; Beijing 101149; China; 2.Center for Disease Control and Prevention of Henan Province; Zhengzhou 450016; 3.Shandong Plumonary Disease Hospital; Ji'nan 250013;
  • Online:2010-09-20 Published:2010-09-20
  • Contact: Zhao Yanlin E-mail:zhaoyanlin@tb123.org

摘要: 目的 评价rRNA扩增方法 在临床应用的效果。 方法 选取到北京胸科医院、山东省胸科医院、河南疾控中心结核病防治所3个机构就诊的肺结核可疑症状者及健康志愿者的痰标本为研究对象,共纳入551例痰标本,对每例痰标本均进行涂片显微镜检查、罗氏培养、rRNA扩增试验以及实时荧光定量PCR。与罗氏培养方法 比较分析rRNA扩增方法 的敏感性、特异性、阳性预测值和阴性预测值以及与实时荧光定量PCR扩增方法 的一致性。 结果rRNA扩增方法 的敏感性为98.5%,特异性为95.0%,阳性预测值为95.0%,阴性预测值为98.5%,rRNA扩增方法 在涂阳标本和涂阴标本间的敏感度和特异度差异均有统计学意义(χ2=9.60,P=0.002;χ2=79.80,P<0.01)。与PCR检测结果的一致性为93.8%,涂阳和涂阴标本中2种方法 的一致性差异有统计学意义(χ2=4.45,P=0.035)。 结论 rRNA扩增方法 的敏感度和特异度均较好,且能明显缩短诊断时间,该方法 是一种较有前景的结核病实验室诊断方法 。

关键词: 结核, 肺/诊断, 分枝杆菌, rRNA扩增技术, 敏感性与特异性

Abstract: Objective To evaluate the clinical value of rRNA amplification assay in the detection ofMycobacterium tuberculosis .  Methods 551 sputum specimens from the patients with doubtful tuberculosis and health volunteers were detected using smear microscopy, L-J medium culture, rRNA amplification assay and real-time PCR. L-J culture used as control, the sensitivity, specificity, positive predictive value and negative predictive value of rRNA assay were analyzed. The accordance rate between rRNA assay and real-time PCR was also analyzed.  Results Compared with L-J culture, the sensitivity, specificity, positive predictive value and negative predictive value of rRNA assay were 98.5%, 95.0%,95.0% and 98.5%, respectively. Its sensitivity and specificity had significant difference between smear-positive and smear-negative specimens (P<0.01). Accordance rate between rRNA amplification assay and real-time PCR was 93.8%, which had significant difference between smear-positive and smear-negative specimens (P<0.05).  Conclusion rRNA amplification assay has a higher sensitivity and specitivity, can shorten the detection time. It would be a promising laboratory diagnosis method.

Key words: tuberculosis, pulmonary/diagnosis, Mycobacterium tuberculosis, mucleic acid amplification techniques, sensitivity and speciticity

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