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肺炎支原体 ELITe InGenius PCR 平台检测评估。

Evaluation of the ELITe InGenius PCR Platform for Detection of Mycoplasma pneumoniae.

机构信息

Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama, USA.

Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA.

出版信息

J Clin Microbiol. 2019 May 24;57(6). doi: 10.1128/JCM.00287-19. Print 2019 Jun.

Abstract

is the leading cause of bacterial community-acquired pneumonia in persons of all ages. Due to the fastidious nature of this bacterium and the necessary specialized growth media, nucleic acid amplification testing is currently the most reliable means for patient diagnostics. Analytical sensitivity, specificity, reproducibility, and clinical performance of the ELITe InGenius automated PCR platform with its MGB Alert real-time PCR research use only reagents (ELITechGroup, Inc., Bothell, WA) were compared with those of a laboratory-developed real-time PCR assay targeting repMp1 for detection of The ELITe InGenius PCR assay successfully detected 31 distinct clinical isolates and reference strains, and there was no cross-reactivity with other mollicutes, Gram-positive bacteria, or Gram-negative bacteria. In testing 223 clinical samples, the ELITe InGenius PCR showed 95.79% and 99.22% positive and negative agreement with the repMp1 assay, respectively. Additionally, the ELITech platform showed 98.91% positive and 96.95% negative predictive values, and there was no significant difference detected between the two assays (McNemar's test,  = 0.375). The ELITe InGenius PCR assay limit of detection was 0.16 CFU/PCR test or 4.16 genome copies (GCs)/test. Accuracy, instrument ease-of-use, and decreased hands-on time make the ELITe InGenius platform suitable for detection of directly from clinical specimens.

摘要

是各年龄段人群细菌性社区获得性肺炎的主要病因。由于该细菌的苛刻特性和必要的特殊生长培养基,核酸扩增检测目前是患者诊断最可靠的手段。ELITe InGenius 自动化 PCR 平台及其 MGB Alert 实时 PCR 研究用试剂(ELITechGroup,Inc.,Bothell,WA)的分析灵敏度、特异性、重现性和临床性能与针对 repMp1 的实验室开发的实时 PCR 检测方法进行了比较,用于检测 31 种不同的临床分离株和参考菌株,ELITe InGenius PCR 检测成功,无交叉反应与其他柔膜体纲细菌、革兰氏阳性菌或革兰氏阴性菌。在检测 223 个临床样本时,ELITe InGenius PCR 与 repMp1 检测的阳性符合率分别为 95.79%和 99.22%,阴性符合率分别为 95.79%和 99.22%。此外,ELITech 平台的阳性预测值为 98.91%,阴性预测值为 96.95%,两种检测方法之间无显著差异(McNemar 检验,  = 0.375)。ELITe InGenius PCR 检测方法的检测限为 0.16 CFU/PCR 检测或 4.16 基因组拷贝(GC)/检测。准确性、仪器易用性和减少的手工操作时间使 ELITe InGenius 平台适合于直接从临床标本中检测 。

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