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Erschienen in: European Journal of Clinical Microbiology & Infectious Diseases 7/2020

15.02.2020 | Original Article

The emergence of carbapenemase blaNDM genotype among carbapenem-resistant Enterobacteriaceae isolates from Egyptian cancer patients

verfasst von: Mahmoud M. Tawfick, Walaa A. Alshareef, Hager A. Bendary, Hadir Elmahalawy, Abeer K. Abdulall

Erschienen in: European Journal of Clinical Microbiology & Infectious Diseases | Ausgabe 7/2020

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Abstract

Carbapenem resistance among Enterobacteriaceae is a major concern that is increasingly reported worldwide. The objective of this study is to determine the incidence of carbapenem resistance as well as to investigate for carbapenemase-encoding genes among Enterobacteriaceae clinical isolates from cancer patients at different cancer institutes in Egypt. This determination was a cross-sectional study with a total of 135 clinical isolates collected over a period of 1 year. All isolates were sub-cultured on ChromID agar and subjected to phenotypic and molecular detection of carbapenemases. Most of the Enterobacteriaceae isolates were MDR with high resistance rates against tested antimicrobials. Overall, the results of PCR assays revealed that 89.62% (121/135) of isolates harbored one or more of the carbapenemase-encoding genes, while phenotypic assays revealed the production of carbapenemases in 68.88% (93/135) of isolates. BlastN analysis against the non-redundant genome sequences available in the GenBank database revealed that the blaNDM-1 gene was the most prevalent genotype of carbapenemases in 93/135 (68.88%), followed by blaOXA-48 44/135 (32.59%), blaOXA-23 42/135 (31.11%), and blaKPC-2 2/135 (1.48%). Klebsiella pneumoniae isolates harbored the highest number of carbapenemase-encoding genes 34/121 (28.09%). The high prevalence of carbapenemases and/or their encoding genes among MDR Enterobacteriaceae bacteria in Egypt is alarming, thus, the management of serious infections caused by Enterobacteriaceae, particularly in cancer patients will be challenging to clinicians. Carbapenemase blaNDM genotype is emerging in cancer healthcare settings in Egypt, which could be the cause of the current increase in carbapenemase-producing Enterobacteriaceae.
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Metadaten
Titel
The emergence of carbapenemase blaNDM genotype among carbapenem-resistant Enterobacteriaceae isolates from Egyptian cancer patients
verfasst von
Mahmoud M. Tawfick
Walaa A. Alshareef
Hager A. Bendary
Hadir Elmahalawy
Abeer K. Abdulall
Publikationsdatum
15.02.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Clinical Microbiology & Infectious Diseases / Ausgabe 7/2020
Print ISSN: 0934-9723
Elektronische ISSN: 1435-4373
DOI
https://doi.org/10.1007/s10096-020-03839-2

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