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IncI1 ST3 and IncI1 ST7 plasmids from CTX-M-1-producing Escherichia coli obtained from patients with bloodstream infections are closely related to plasmids from E. coli of animal origin

A. Valcek, L. Roer, S. Overballe-Petersen, F. Hansen, V. Bortolaia, P. Leekitcharoenphon, HB. Korsgaard, AM. Seyfarth, RS. Hendriksen, H. Hasman, AM. Hammerum,

. 2019 ; 74 (8) : 2171-2175. [pub] 20190801

Jazyk angličtina Země Velká Británie

Typ dokumentu srovnávací studie, časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc20025745

OBJECTIVES: Fully sequenced IncI1 plasmids obtained from CTX-M-1-producing Escherichia coli of human and animal origin were compared. METHODS: Twelve E. coli isolates sharing identical ESBL genes and plasmid multilocus STs sequenced on Illumina and MinION platforms were obtained from the Danish antimicrobial resistance surveillance programme, DANMAP. After de novo assembly, the sequences of plasmids harbouring blaCTX-M-1 were manually curated and ORFs annotated. Within-group comparisons were performed separately for the IncI1 ST3 plasmid type and the IncI1 ST7 plasmid type. The IncI1 ST3 plasmid group was obtained from 10 E. coli isolates (2 from patients with bloodstream infections, 6 from food and 2 from animals). The IncI1 ST7 plasmids originated from E. coli isolates obtained from a patient with bloodstream infection and from a pig. Sequences of IncI1 ST3 and IncI1 ST7 plasmids harbouring blaCTX-M-1 with determined origin were retrieved from GenBank and used for comparison within the respective group. RESULTS: The 10 IncI1 ST3 blaCTX-M-1 plasmids were highly similar in structure and organization with only minor plasmid rearrangements and differences in the variable region. The IncI1 ST7 blaCTX-M-1 plasmids also showed high similarity in structure and organization. The high level of similarity was also observed when including plasmids from E. coli of animal origin from Australia, Switzerland, the Netherlands and France. CONCLUSIONS: This study shows broad spread of a very successful CTX-M-1-producing IncI1 type plasmid among E. coli of both human and animal origin.

Citace poskytuje Crossref.org

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$a Valcek, Adam $u Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark. Department of Biology and Wildlife Diseases, Faculty of Veterinary Hygiene, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic. CEITEC VFU, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic.
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$a OBJECTIVES: Fully sequenced IncI1 plasmids obtained from CTX-M-1-producing Escherichia coli of human and animal origin were compared. METHODS: Twelve E. coli isolates sharing identical ESBL genes and plasmid multilocus STs sequenced on Illumina and MinION platforms were obtained from the Danish antimicrobial resistance surveillance programme, DANMAP. After de novo assembly, the sequences of plasmids harbouring blaCTX-M-1 were manually curated and ORFs annotated. Within-group comparisons were performed separately for the IncI1 ST3 plasmid type and the IncI1 ST7 plasmid type. The IncI1 ST3 plasmid group was obtained from 10 E. coli isolates (2 from patients with bloodstream infections, 6 from food and 2 from animals). The IncI1 ST7 plasmids originated from E. coli isolates obtained from a patient with bloodstream infection and from a pig. Sequences of IncI1 ST3 and IncI1 ST7 plasmids harbouring blaCTX-M-1 with determined origin were retrieved from GenBank and used for comparison within the respective group. RESULTS: The 10 IncI1 ST3 blaCTX-M-1 plasmids were highly similar in structure and organization with only minor plasmid rearrangements and differences in the variable region. The IncI1 ST7 blaCTX-M-1 plasmids also showed high similarity in structure and organization. The high level of similarity was also observed when including plasmids from E. coli of animal origin from Australia, Switzerland, the Netherlands and France. CONCLUSIONS: This study shows broad spread of a very successful CTX-M-1-producing IncI1 type plasmid among E. coli of both human and animal origin.
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$a Hansen, Frank $u Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark.
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$a Bortolaia, Valeria $u Research Group for Genomic Epidemiology, National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark.
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$a Hasman, Henrik $u Department of Bacteria, Parasites and Fungi, Statens Serum Institut, Copenhagen, Denmark.
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