Prevalence of O25b-ST131 Escherichia coli Clone: Fecal Carriage of Extended-Spectrum ß-Lactamase and Carbapenemase-Producing Isolates in Healthy Adults in Tehran, Iran.
Microb Drug Resist
; 28(2): 210-216, 2022 Feb.
Article
em En
| MEDLINE
| ID: mdl-34698555
ABSTRACT
Fecal carriage of multidrug-resistant Escherichia coli, particularly sequence type 131 (ST131), is becoming a global concern. This study aimed at determining the prevalence rate and molecular epidemiology of extended-spectrum ß-lactamase-producing E. coli (ESBL-Ec), carbapenemase-producing E. coli (CPEc), ceftazidime/avibactam (CAZ/AVI)-resistant E. coli, and ST131 isolates in healthy fecal carriers in Tehran, Iran. Among 540 samples studied, 233 (43.1%) carried ESBL-Ec, with the majority (93.9%) harboring the blaCTX-M. The carriage rate of CPEc was 2.5% (n = 14/540), and blaNDM gene was the predominant carbapenemase gene. Most CPEc isolates (n = 11/14) was shown to be resistant to CAZ/AVI. Among ESBL-Ec/CPEc, 7.3% (n = 17/233) belonged to E. coli ST131 clone, which was identified by polymerase chain reaction and confirmed by multilocus sequence typing. The ST131 isolates genetically typed by pulsed-field gel electrophoresis were heterogeneous and four different plasmids were detected by plasmid typing, with the IncFIA/FIB being the major type. Our findings disclose that the presence of carbapenem-resistant ST131 isolates, which are also resistant to CAZ/AVI, contributes to the spread of resistant strains in the community. Therefore, screening and monitoring of such resistant clone in healthy people is necessary.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Beta-Lactamases
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Portador Sadio
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Farmacorresistência Bacteriana Múltipla
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Escherichia coli
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Fezes
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Antibacterianos
Tipo de estudo:
Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adolescent
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Adult
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Female
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Humans
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Male
País/Região como assunto:
Asia
Idioma:
En
Ano de publicação:
2022
Tipo de documento:
Article