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Arising Prevalence of OXA-48 producer Escherichia coli and OXA-48 with NDM co-producer Klebsiella pneumoniae Strains Cover

Arising Prevalence of OXA-48 producer Escherichia coli and OXA-48 with NDM co-producer Klebsiella pneumoniae Strains

Open Access
|Jul 2019

Abstract

Background/aim: This prospective study aimed to determine the presence of the most common carbapenemase genes, blaOXA-48, blaKPC, blaIMP, blaVIM and blaNDM on carbapenem resistant clinical K.pneumoniae and E.coli isolates. Materials and methods: Isolates were selected according to EUCAST guideline; gradient test and disc diffusion with both meropenem and ertapenem discs. Resistance rates of these isolates to other antimicrobial agents were also examined by disc diffusion method. Carbapenem resistance gene were investigated by using Real-Time PCR. Results: A total of 3845 E. coli and 1689 K.pneumoniae isolates from clinical samples between January 2015 and April 2017 were evaluated. The 419 isolates were found as carbapenem resistant but only the first resistant isolate (n=155; 126 K.pneumoniae and 29 E.coli) of each patient were included. Carbapenem resistant isolates were most frequently isolated from intensive care units (48.8%). Colistin was the most effective antibiotic (91.0%). The 121 (78.1%) of the tested isolates were positive for OXA-48 (103 K.pneumoniae and 18 E.coli) and 9 K. pneumoniae carrying blaNDM were also positive for blaOXA-48. VIM, IMP and KPC type carbapenemases were not detected in any isolates. Conclusion: Carbapenem-resistant pathogens have been shown to be able to develop resistance mechanisms with more than one carbapenemase encoding gene.

DOI: https://doi.org/10.2478/rrlm-2019-0030 | Journal eISSN: 2284-5623 | Journal ISSN: 1841-6624
Language: English
Page range: 319 - 326
Submitted on: Jan 25, 2019
Accepted on: Jun 13, 2019
Published on: Jul 30, 2019
Published by: Romanian Association of Laboratory Medicine
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2019 Aylin Uskudar-Guclu, Mustafa Guney, Ali Korhan Sig, Selcuk Kilic, Mehmet Baysallar, published by Romanian Association of Laboratory Medicine
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.