| Autor: |
Xing-Run Zheng, Yin-Huan Sun, Jia-Hang Zhu, Si-Li Wu, Cai Ping, Liang-Xing Fang, Hong-Xia Jiang |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Journal of Global Antimicrobial Resistance, Vol 26, Iss , Pp 222-226 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2213-7165 |
| DOI: |
10.1016/j.jgar.2021.06.006 |
| Popis: |
ABSTRACT: Objectives: This study reports identification of the carbapenemase-encoding gene from carbapenem-resistant Enterobacterales from food animals. Methods: A total of 40 bacterial isolates recovered from 475 faecal swabs obtained on one farm were tested for the presence of the blaNDM-1 gene by PCR. Species identification of three blaNDM-1-positive strains was conducted by MALDI-TOF/MS. Antimicrobial susceptibility testing was performed by broth microdilution. Transferability of the blaNDM-1 and cfr genes was determined by filter mating. The genetic environment of blaNDM-1 and cfr was analysed by whole-genome sequencing. Results: Two Proteus mirabilis (JPM24 and YPM35) and one Providencia rettgeri (YPR25) carried blaNDM-1. The blaNDM-1 genes were located on conjugable pPrY2001-like plasmids often reported to carry important antimicrobial resistance genes (ARGs). YPR25 and YPM35 shared two almost identical conjugable plasmids, one carrying blaNDM-1 and the other cfr. The blaNDM-1 gene in YPR25 (same as YPM35) and JPM24 was located in two novel transposons, designated Tn6922 and Tn6923, respectively. Tn6922 and Tn6923 carried 14 and 7 ARGs, respectively, and both contained multiple copies of IS26 in the same direction, with a high degree of similarity. Additionally, cfr was located on a plasmid with an unreported high frequency of conjugative transfer in YPR25 (same as YPM35). Conclusion: We identified two novel blaNDM-1-containing transposons (Tn6922 and Tn6923) present on pPrY2001-like plasmids. The pPrY2001-like blaNDM-1 plasmids coexisted with a novel cfr plasmid, and both could transfer at high frequency, highlighting the importance of continuous surveillance of multiresistant Enterobacterales of animal origin that can serve as a reservoir for ARGs. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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