Abstract
We found a carbapenem-resistant Enterobacter clinical strain which was susceptible to cefotaxime and ceftazidime. This unusual susceptibility profile promoted the investigation. This strain had blaFRI-11, a rare carbapenemase-encoding gene, on a 93,864-bp plasmid containing two replicons of IncFII(pECLA) and IncFIA(HI1). FRI-11, FRI-2, FRI-3, FRI-4, FRI-6, FRI-7, and FRI-9 belong to the same group of FRI β-lactamases based on the amino acid sequence similarity and their encoding genes are carried by plasmids containing an IncFII(pECLA) replicon. Awareness should be raised towards FRI carbapenemases that are plasmid-encoded and confer an unusual carbapenem-resistant but 3rd-generation-cephalosporin-susceptible resistance profile.
Data availability
Complete genome sequences of strain 155105 have been deposited in the GenBank databases under accession numbers CP104976 to CP104979.
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Funding
The work is supported by the National Natural Science Foundation of China (82172309) and grants from the West China Hospital of Sichuan University (1.3.5 project for disciplines of excellence, grant number ZYYC08006 and ZYGD22001).
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The study conception and design were performed by Zhiyong Zong. Material preparation and data collection and analysis were processed by Shikai Wu and Yanling He. The bioinformatics analysis of the strain genome was carried out by Yu Feng. The first draft of the manuscript was processed by Shikai Wu. The editing and review of the manuscript was completed by Zhiyong Zong. All authors read and approved the final manuscript.
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Wu, S., He, Y., Feng, Y. et al. A rare class A carbapenemase FRI-11 in Enterobacter clinical strain. Eur J Clin Microbiol Infect Dis 42, 513–517 (2023). https://doi.org/10.1007/s10096-023-04565-1
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DOI: https://doi.org/10.1007/s10096-023-04565-1