کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8420447 1545896 2018 22 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rapid detection of carbapenemase-producing Acinetobacter baumannii and carbapenem-resistant Enterobacteriaceae using a bioluminescence-based phenotypic method
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Rapid detection of carbapenemase-producing Acinetobacter baumannii and carbapenem-resistant Enterobacteriaceae using a bioluminescence-based phenotypic method
چکیده انگلیسی
Accurate detection of carbapenem-resistant Enterobacteriaceae (CRE) and carbapenemase-producing carbapenem-resistant Acinetobacter spp. (CP-CRA) constitutes a major challenge in laboratory diagnostics. We developed a bioluminescence-based carbapenem susceptibility detection assay (BCDA) which allows identification of CRE (carbapenemase-producing-CRE (CP-CRE) as well as non-carbapenemase-producing-CRE (non-CP-CRE) and CP-CRA in 2.5 h from culture media. This laboratory method was evaluated with CP-CRE and CP-CRA isolates producing different β-lactamases of different Ambler classes (A, n = 16; B, n = 25; D, n = 67) and 22 non-CP-CRE. The results were correlated with those obtained by BD Phoenix™ and genotypic analysis results. The performance of BCDA on 123 validated CRE (except C. freundii isolates) and CP-CPA isolates revealed that 122 of 123 isolates were identified correctly. Only one OXA-48-producing Klebsiella pneumoniae was falsely classified. Among 45 meropenem susceptible Enterobacteriaceae (except C. freundii isolates) and meropenem susceptible Acinetobacter spp. strains tested, 44 were confirmed as susceptible by our BCDA. Overall, our BCDA had a sensitivity of 99% and a specificity of 98% and is a rapid and accurate assay which distinguished CRE/CP-CRA from meropenem susceptible Enterobacteriaceae and Acinetobacter spp.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 147, April 2018, Pages 20-25
نویسندگان
, , , ,