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First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia

The emergence of multidrug-resistant bacteria has become a major problem. Cockroaches may play an important role in the spread of those bacteria between the environment and humans. This study was designed to screen extended-spectrum β-lactamase (ESBL)-producing and colistin-resistant strains and to...

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Autores principales: Landolsi, Sarrah, Selmi, Rachid, Hadjadj, Linda, Ben Haj Yahia, Asma, Ben Romdhane, Kaouther, Messadi, Lilia, Rolain, Jean Marc
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Society for Microbiology 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9045256/
https://www.ncbi.nlm.nih.gov/pubmed/35230131
http://dx.doi.org/10.1128/spectrum.00036-21
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author Landolsi, Sarrah
Selmi, Rachid
Hadjadj, Linda
Ben Haj Yahia, Asma
Ben Romdhane, Kaouther
Messadi, Lilia
Rolain, Jean Marc
author_facet Landolsi, Sarrah
Selmi, Rachid
Hadjadj, Linda
Ben Haj Yahia, Asma
Ben Romdhane, Kaouther
Messadi, Lilia
Rolain, Jean Marc
author_sort Landolsi, Sarrah
collection PubMed
description The emergence of multidrug-resistant bacteria has become a major problem. Cockroaches may play an important role in the spread of those bacteria between the environment and humans. This study was designed to screen extended-spectrum β-lactamase (ESBL)-producing and colistin-resistant strains and to investigate the molecular support of multidrug-resistant Enterobacteriaceae in the external surface and gut homogenates of cockroaches collected from different locations in Tunisia. Between July 2017 and June 2018, 144 Enterobacteriaceae samples were isolated from 115 trapped cockroaches (collective catering, houses, and a hospital). Antibiotic susceptibility testing was performed using the disk diffusion method. Extended-spectrum β-lactamase-encoding genes and the mcr-1 gene were investigated by real-time PCR (RT-PCR) and standard PCR. The genetic relationship among isolates was studied with the help of multilocus sequence type (MLST) analysis. Of the 144 Enterobacteriaceae isolates, 22 strains exhibited a positive ESBL-screening test (73.3%), including 17 Escherichia coli isolates and 5 Klebsiella pneumoniae isolates. Among them, 9 Escherichia coli isolates were resistant to colistin, with an MIC ranging from 8 to16 μg/L, all of which harbored the mcr-1 gene. Eight bla(CTX-M-15) genes were detected; two among them were associated with bla(TEM-117) and bla(TEM-128), and seven bla(CTX-M-1) genes were detected that also harbored the mcr-1 gene. Genotyping analysis revealed 7 different sequence types already described in humans and animals. We report the first survey of mcr-1 in ESBL-producing E. coli isolates from cockroaches. Our findings highlight cockroaches as a source of nosocomial infections, and they are a reservoir of colistin-resistant E. coli, which is a carrier of other additional risk genes such as bla(ESBL), especially in hospitals. IMPORTANCE Multidrug resistance in Enterobacteriaceae has become a major concern worldwide that is increasingly observed in human, animals, and also cockroaches. In our study, we found that cockroaches may play an important role as a potential vector of multidrug-resistant Enterobacteriaceae in the hospital environment and collective catering. Our study describes the first survey of mcr-1 in ESBL-producing E. coli isolates from hospital cockroaches. Our results further highlight the possibility that mcr-1 may enter humans via cockroach contamination and thereby threaten public health. Our results show that these cockroaches are an important reservoir of colistin-resistant E. coli and carriers of other additional risk genes such as bla(ESBL), hence the importance of strengthening prevention strategies and of strictly respecting hygiene measures in order to control their distribution and spread in Tunisia.
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spelling pubmed-90452562022-04-28 First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia Landolsi, Sarrah Selmi, Rachid Hadjadj, Linda Ben Haj Yahia, Asma Ben Romdhane, Kaouther Messadi, Lilia Rolain, Jean Marc Microbiol Spectr Research Article The emergence of multidrug-resistant bacteria has become a major problem. Cockroaches may play an important role in the spread of those bacteria between the environment and humans. This study was designed to screen extended-spectrum β-lactamase (ESBL)-producing and colistin-resistant strains and to investigate the molecular support of multidrug-resistant Enterobacteriaceae in the external surface and gut homogenates of cockroaches collected from different locations in Tunisia. Between July 2017 and June 2018, 144 Enterobacteriaceae samples were isolated from 115 trapped cockroaches (collective catering, houses, and a hospital). Antibiotic susceptibility testing was performed using the disk diffusion method. Extended-spectrum β-lactamase-encoding genes and the mcr-1 gene were investigated by real-time PCR (RT-PCR) and standard PCR. The genetic relationship among isolates was studied with the help of multilocus sequence type (MLST) analysis. Of the 144 Enterobacteriaceae isolates, 22 strains exhibited a positive ESBL-screening test (73.3%), including 17 Escherichia coli isolates and 5 Klebsiella pneumoniae isolates. Among them, 9 Escherichia coli isolates were resistant to colistin, with an MIC ranging from 8 to16 μg/L, all of which harbored the mcr-1 gene. Eight bla(CTX-M-15) genes were detected; two among them were associated with bla(TEM-117) and bla(TEM-128), and seven bla(CTX-M-1) genes were detected that also harbored the mcr-1 gene. Genotyping analysis revealed 7 different sequence types already described in humans and animals. We report the first survey of mcr-1 in ESBL-producing E. coli isolates from cockroaches. Our findings highlight cockroaches as a source of nosocomial infections, and they are a reservoir of colistin-resistant E. coli, which is a carrier of other additional risk genes such as bla(ESBL), especially in hospitals. IMPORTANCE Multidrug resistance in Enterobacteriaceae has become a major concern worldwide that is increasingly observed in human, animals, and also cockroaches. In our study, we found that cockroaches may play an important role as a potential vector of multidrug-resistant Enterobacteriaceae in the hospital environment and collective catering. Our study describes the first survey of mcr-1 in ESBL-producing E. coli isolates from hospital cockroaches. Our results further highlight the possibility that mcr-1 may enter humans via cockroach contamination and thereby threaten public health. Our results show that these cockroaches are an important reservoir of colistin-resistant E. coli and carriers of other additional risk genes such as bla(ESBL), hence the importance of strengthening prevention strategies and of strictly respecting hygiene measures in order to control their distribution and spread in Tunisia. American Society for Microbiology 2022-03-01 /pmc/articles/PMC9045256/ /pubmed/35230131 http://dx.doi.org/10.1128/spectrum.00036-21 Text en Copyright © 2022 Landolsi et al. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Article
Landolsi, Sarrah
Selmi, Rachid
Hadjadj, Linda
Ben Haj Yahia, Asma
Ben Romdhane, Kaouther
Messadi, Lilia
Rolain, Jean Marc
First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia
title First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia
title_full First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia
title_fullStr First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia
title_full_unstemmed First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia
title_short First Report of Extended-Spectrum β-Lactamase (bla(CTX-M1)) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia
title_sort first report of extended-spectrum β-lactamase (bla(ctx-m1)) and colistin resistance gene mcr-1 in e. coli of lineage st648 from cockroaches in tunisia
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9045256/
https://www.ncbi.nlm.nih.gov/pubmed/35230131
http://dx.doi.org/10.1128/spectrum.00036-21
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