Back to Search
Start Over
Pan-genome and resistome analysis of extended-spectrum ß-lactamase-producing Escherichia coli: A multi-setting epidemiological surveillance study from Malaysia.
- Source :
-
PloS one [PLoS One] 2022 Mar 10; Vol. 17 (3), pp. e0265142. Date of Electronic Publication: 2022 Mar 10 (Print Publication: 2022). - Publication Year :
- 2022
-
Abstract
- Objectives: This study profiled the prevalence of extended-spectrum ß-lactamase-producing Escherichia coli (ESBL-EC) in the community and compared their resistome and genomic profiles with isolates from clinical patients through whole-genome sequencing.<br />Methods: Fecal samples from 233 community dwellers from Segamat, a town in southern Malaysia, were obtained between May through August 2018. Putative ESBL strains were screened and tested using antibiotic susceptibility tests. Additionally, eight clinical ESBL-EC were obtained from a hospital in the same district between June through October 2020. Whole-genome sequencing was then conducted on selected ESBL-EC from both settings (n = 40) for pan-genome comparison, cluster analysis, and resistome profiling.<br />Results: A mean ESBL-EC carriage rate of 17.82% (95% CI: 10.48%- 24.11%) was observed in the community and was consistent across demographic factors. Whole-genome sequences of the ESBL-EC (n = 40) enabled the detection of multiple plasmid replicon groups (n = 28), resistance genes (n = 34) and virulence factors (n = 335), with no significant difference in the number of genes carried between the community and clinical isolates (plasmid replicon groups, p = 0.13; resistance genes, p = 0.47; virulence factors, p = 0.94). Virulence gene marker analysis detected the presence of extraintestinal pathogenic E. coli (ExPEC), uropathogenic E. coli (UPEC), and enteroaggregative E. coli (EAEC) in both the community and clinical isolates. Multiple blaCTX-M variants were observed, dominated by blaCTX-M-27 (n = 12), blaCTX-M-65 (n = 10), and blaCTX-M-15 (n = 9). The clinical and community isolates did not cluster together based on the pan-genome comparison, suggesting isolates from the two settings were clonally unrelated. However, cluster analysis based on carried plasmids, resistance genes and phenotypic susceptibility profiles identified four distinct clusters, with similar patterns between the community and clinical isolates.<br />Conclusion: ESBL-EC from the clinical and community settings shared similar resistome profiles, suggesting the frequent exchange of genetic materials through horizontal gene transfer.<br />Competing Interests: The authors have declared that no competing interests exist.
- Subjects :
- Anti-Bacterial Agents pharmacology
Anti-Bacterial Agents therapeutic use
Humans
Malaysia epidemiology
Microbial Sensitivity Tests
Plasmids genetics
Virulence Factors
beta-Lactamases genetics
Escherichia coli genetics
Escherichia coli Infections drug therapy
Escherichia coli Infections epidemiology
Subjects
Details
- Language :
- English
- ISSN :
- 1932-6203
- Volume :
- 17
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- PloS one
- Publication Type :
- Academic Journal
- Accession number :
- 35271656
- Full Text :
- https://doi.org/10.1371/journal.pone.0265142