A1 Refereed original research article in a scientific journal
Plasmid-Mediated Co-Occurrence of mcr-1.1 in Extended-Spectrum β-Lactamase (ESBL)-Producing Escherichia coli Isolated From the Indigenous Seminomadic Community in Malaysia
Authors: Yap, Polly Soo Xi; Yeo, Li-Fang; Teh, Cindy Shuan Ju; Dhanoa, Amreeta; Phipps, Maude Elvira
Publisher: WILEY
Publishing place: HOBOKEN
Publication year: 2024
Journal: Transboundary and Emerging Diseases
Journal name in source: TRANSBOUNDARY AND EMERGING DISEASES
Journal acronym: TRANSBOUND EMERG DIS
Article number: 9223696
Volume: 2024
Number of pages: 11
ISSN: 1865-1674
eISSN: 1865-1682
DOI: https://doi.org/10.1155/2024/9223696
Web address : https://doi.org/10.1155/2024/9223696
Abstract
The growing prevalence of commensal antibiotic resistant Escherichia coli poses a significant concern for the global spread of antibiotic resistance. Stool samples (n = 35) from a seminomadic indigenous community in Malaysia, the Jehai, were screened for multidrug-resistant bacteria, specifically the extended-spectrum beta-lactamase (ESBL) producers. Subsequently, whole-genome sequencing was used to provide genomic insights into eight ESBL-producing E. coli that colonised eight individuals. The ESBL E. coli isolates carry resistance genes from various antibiotic classes such as the beta-lactams (bla(TEM), bla(CTX-M-15) and bla(CTX-M-55)), quinolones (gyrA, qnrS and qnrS1) and aminoglycosides (aph(3 ')-Ia, aph(6)-Id and aac(3)-IId). Three concerning convergence of ESBL, colistin and metal resistance determinants, with three plasmids from H-type lineage harbouring bla(CTX-M) and mcr-1.1 genes were identified. Using the Oxford Nanopore Technology (ONT) Native Barcoding Kit (SQK-NBD114.24) in conjunction with the R10.4.1 flow cell, which achieved an average read accuracy (Q > 10) of 99.84%, we further characterised the mcr-1.1-bearing plasmids, ranging in size from 25 to 28 kb, from three strains of E. coli. This report represents the first whole genome analysis of multidrug-resistant bacteria, specifically those resistant to colistin, found within the indigenous population in Malaysia. It strongly indicates that the pertinent issue of colistin resistance in the country is far more significant than previously estimated.
The growing prevalence of commensal antibiotic resistant Escherichia coli poses a significant concern for the global spread of antibiotic resistance. Stool samples (n = 35) from a seminomadic indigenous community in Malaysia, the Jehai, were screened for multidrug-resistant bacteria, specifically the extended-spectrum beta-lactamase (ESBL) producers. Subsequently, whole-genome sequencing was used to provide genomic insights into eight ESBL-producing E. coli that colonised eight individuals. The ESBL E. coli isolates carry resistance genes from various antibiotic classes such as the beta-lactams (bla(TEM), bla(CTX-M-15) and bla(CTX-M-55)), quinolones (gyrA, qnrS and qnrS1) and aminoglycosides (aph(3 ')-Ia, aph(6)-Id and aac(3)-IId). Three concerning convergence of ESBL, colistin and metal resistance determinants, with three plasmids from H-type lineage harbouring bla(CTX-M) and mcr-1.1 genes were identified. Using the Oxford Nanopore Technology (ONT) Native Barcoding Kit (SQK-NBD114.24) in conjunction with the R10.4.1 flow cell, which achieved an average read accuracy (Q > 10) of 99.84%, we further characterised the mcr-1.1-bearing plasmids, ranging in size from 25 to 28 kb, from three strains of E. coli. This report represents the first whole genome analysis of multidrug-resistant bacteria, specifically those resistant to colistin, found within the indigenous population in Malaysia. It strongly indicates that the pertinent issue of colistin resistance in the country is far more significant than previously estimated.
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