Universität zu Köln

Greissl, Christopher, Saleh, Ahmad and Hamprecht, Axel ORCID: 0000-0003-1449-5780 (2019). Rapid detection of OXA-48-like, KPC, NDM, and VIM carbapenemases in Enterobacterales by a new multiplex immunochromatographic test. Eur. J. Clin. Microbiol. Infect. Dis., 38 (2). S. 331 - 336. NEW YORK: SPRINGER. ISSN 1435-4373

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Abstract

The rapid detection of carbapenemase-producing Gram-negative bacteria is indispensable to optimize treatment and avoid the further spread of these organisms. While phenotypic tests are time-consuming and PCR is expensive and not available in many routine laboratories, immunochromatographic tests (ICT) can provide rapid results at moderate cost. The aim of this study was to determine the performance of the new ICT RESIST-4 O.K.N.V. K-SeT (Coris BioConcept, Gembloux, Belgium) which can detect the four most prevalent carbapenemases: OXA-48-like, KPC, NDM, and VIM. Additionally, we analyzed the impact of different culture conditions on the sensitivity. The new ICT was challenged with 169 carbapenem-resistant isolates. Of these, 125 were carbapenemase producers: 43 OXA-48-like, 15 KPC, 29 NDM, and 43 VIM. The ICT correctly detected 129 of the 130 carbapenemases resulting in a sensitivity of 99.2% and specificity of 100% when tested from Mueller-Hinton agar (MHA). The sensitivity of the assay increased to 100% when performed from zinc-supplemented MHA and sheep blood agar (SBA) or when the inoculum was harvested from the inhibition zone of an ertapenem disk. All carbapenemase-negative carbapenem-resistant bacteria tested negative and no cross-reaction was observed. The new ICT is an excellent test for rapid diagnostic of carbapenemase-producing Gram-negatives in the routine laboratory. It is easy to handle and provides rapid results with a high sensitivity. For best results, we recommend to obtain the inoculum from a medium with sufficient zinc or from the inhibition zone of an ertapenem disk.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Greissl, Christopher UNSPECIFIED UNSPECIFIED UNSPECIFIED Saleh, Ahmad UNSPECIFIED UNSPECIFIED UNSPECIFIED Hamprecht, Axel UNSPECIFIED orcid.org/0000-0003-1449-5780 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-158201
DOI:	10.1007/s10096-018-3432-2
Journal or Publication Title:	Eur. J. Clin. Microbiol. Infect. Dis.
Volume:	38
Number:	2
Page Range:	S. 331 - 336
Date:	2019
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1435-4373
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BETA-LACTAMASE; ASSAY Multiple languages Infectious Diseases; Microbiology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15820