Prevalence and Characterization of ESBL/AmpC Producing <i>Escherichia coli</i> from Fresh Meat in Portugal
The present study aimed to characterize the extended-spectrum β-lactamases and plasmid-mediated AmpC β-lactamases (ESBL/PMAβ) among <i>Escherichia coli</i> producers isolated from beef, pork, and poultry meat collected at retail, in Portugal. A total of 638 meat samples were collected an...
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| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/23e011e878894df19c122ef090afb90f |
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| Sumario: | The present study aimed to characterize the extended-spectrum β-lactamases and plasmid-mediated AmpC β-lactamases (ESBL/PMAβ) among <i>Escherichia coli</i> producers isolated from beef, pork, and poultry meat collected at retail, in Portugal. A total of 638 meat samples were collected and inoculated on selective medium for the search of <i>E. coli</i> resistant to 3rd generation cephalosporins. Isolates were characterized by antimicrobial susceptibility testing, molecular assays targeting ESBL/AmpC, plasmid-mediated quinolone resistance (PMQR), and plasmid-mediated colistin resistance (PMCR) encoding genes. The highest frequency of <i>E. coli</i> non-wild type to 3rd generation cephalosporins and fluoroquinolones was observed in broiler meat (30.3% and 93.3%, respectively). Overall, a diversity of acquired resistance mechanisms, were detected: <i>bla</i><sub>ESBL</sub> [<i>bla</i><sub>CTX-M-1</sub> (<i>n</i> = 19), <i>bla</i><sub>CTX-M-15</sub> (<i>n</i> = 4), <i>bla</i><sub>CTX-M-32</sub> (<i>n</i> = 12), <i>bla</i><sub>CTX-M-55</sub> (<i>n</i> = 8), <i>bla</i><sub>CTX-M-65</sub> (<i>n</i> = 4), <i>bla</i><sub>CTX-M-27</sub> (<i>n</i> = 2), <i>bla</i><sub>CTX-M-9</sub> (<i>n</i> = 1), <i>bla</i><sub>CTX-M-14</sub> (<i>n</i> = 11), <i>bla</i><sub>SHV-12</sub> (<i>n</i> = 27), <i>bla</i><sub>TEM-52</sub> (<i>n</i> = 1)], <i>bla</i><sub>PMAβ</sub> [<i>bla</i><sub>CMY-2</sub> (<i>n</i> = 8)], PMQR [<i>qnrB</i> (<i>n</i> = 27), <i>qnrS</i> (<i>n</i> = 21) and <i>aac(6’)-Ib-type</i> (<i>n</i> = 4)] and PMCR [<i>mcr-1</i> (<i>n</i> = 8)]. Our study highlights that consumers may be exposed through the food chain to multidrug-resistant <i>E. coli</i> carrying diverse plasmid-mediated antimicrobial resistance genes, posing a great hazard to food safety and a public health risk. |
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