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Ballesteros-Monrreal MG, Mendez-Pfeiffer P, Ortíz B, Bolado-Martínez E, Álvarez-Ainza ML, Enciso-Martínez Y, Arenas-Hernández MMP, Diaz-Murrieta B, Barrios-Villa E, Valencia D. Uropathogenic E. coli and Hybrid Pathotypes in Mexican Women with Urinary Tract Infections: A Comprehensive Molecular and Phenotypic Overview. Curr Issues Mol Biol 2024; 46:5909-5928. [PMID: 38921024 PMCID: PMC11202577 DOI: 10.3390/cimb46060353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/07/2024] [Accepted: 06/08/2024] [Indexed: 06/27/2024] Open
Abstract
Uropathogenic Escherichia coli (UPEC) is the main cause of urinary tract infections (UTIs) and carries virulence and resistance factors often found in mobilizable genetic elements, such as plasmids or pathogenicity islands (PAIs). UPEC is part of the extraintestinal pathogenic E. coli (ExPEC), but hybrid strains possessing both diarrheagenic E. coli (DEC) and ExPEC traits, termed "hypervirulent", present a significant health threat. This study assessed the prevalence of UPEC PAIs, ExPEC sequence types (ST), DEC genes, carbapenemase and extended-spectrum β-lactamase (ESBL) phenotypes, resistance genotypes, and plasmids in 40 clinical isolates of UPEC. Results showed that 72.5% of isolates had PAIs, mainly PAI IV536 (53%). ESBL phenotypes were found in 65% of β-lactam-resistant isolates, with 100% of carbapenem-resistant isolates producing carbapenemase. The predominant ESBL gene was blaCTX-M-2 (60%), and the most common resistance gene in fluoroquinolone and aminoglycoside-resistant isolates was aac(6')Ib (93%). Plasmids were present in 57% of isolates, and 70% belonged to the ST131 clonal group. Molecular markers for DEC pathotypes were detected in 20 isolates, with 60% classified as hybrid pathotypes. These findings indicate significant pathogenic potential and the presence of hybrid pathotypes in E. coli UTI clinical isolates in the Mexican population.
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Affiliation(s)
- Manuel G. Ballesteros-Monrreal
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, Caborca CP 83621, Sonora, Mexico; (M.G.B.-M.); (P.M.-P.); (Y.E.-M.); (B.D.-M.)
| | - Pablo Mendez-Pfeiffer
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, Caborca CP 83621, Sonora, Mexico; (M.G.B.-M.); (P.M.-P.); (Y.E.-M.); (B.D.-M.)
| | - Bryan Ortíz
- Instituto de Investigaciones en Microbiología, Facultad de Ciencias, Universidad Nacional Autónoma de Honduras, Tegucigalpa 11101, Honduras;
| | - Enrique Bolado-Martínez
- Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Hermosillo CP 83000, Sonora, Mexico; (E.B.-M.); (M.L.Á.-A.)
| | - Maritza Lizeth Álvarez-Ainza
- Departamento de Ciencias Químico-Biológicas, Universidad de Sonora, Hermosillo CP 83000, Sonora, Mexico; (E.B.-M.); (M.L.Á.-A.)
| | - Yessica Enciso-Martínez
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, Caborca CP 83621, Sonora, Mexico; (M.G.B.-M.); (P.M.-P.); (Y.E.-M.); (B.D.-M.)
| | - Margarita M. P. Arenas-Hernández
- Posgrado en Microbiología, Centro de Investigación en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Ciudad Universitaria, Puebla CP 72570, Pue, Mexico
| | - Betsaida Diaz-Murrieta
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, Caborca CP 83621, Sonora, Mexico; (M.G.B.-M.); (P.M.-P.); (Y.E.-M.); (B.D.-M.)
| | - Edwin Barrios-Villa
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, Caborca CP 83621, Sonora, Mexico; (M.G.B.-M.); (P.M.-P.); (Y.E.-M.); (B.D.-M.)
| | - Dora Valencia
- Departamento de Ciencias Químico-Biológicas y Agropecuarias, Universidad de Sonora, Caborca CP 83621, Sonora, Mexico; (M.G.B.-M.); (P.M.-P.); (Y.E.-M.); (B.D.-M.)
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Hoang HTT, Yamamoto M, Calvopina M, Bastidas-Caldes C, Yamamoto Y. Chromosomal qnrB19-carrying Escherichia coli isolated from the stool sample of a community resident in Ecuador. Microbiol Resour Announc 2024; 13:e0004624. [PMID: 38775496 DOI: 10.1128/mra.00046-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 04/20/2024] [Indexed: 06/12/2024] Open
Abstract
We identified a chromosomal qnrB19 gene within a transposon in a colistin-resistant Escherichia coli strain isolated from the stool sample of an Ecuadorian resident. This finding suggests a more stable acquisition of quinolone resistance on chromosomes than that on plasmids and the potential for propagation to other DNA structures.
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Affiliation(s)
- Hoa Thi Thanh Hoang
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Mayumi Yamamoto
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Health Administration Center, Gifu University, Gifu, Japan
| | - Manuel Calvopina
- One Health Research Group, Universidad De Las Americas, Quito, Ecuador
| | | | - Yoshimasa Yamamoto
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
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Alshaikh SA, El-Banna T, Sonbol F, Farghali MH. Correlation between antimicrobial resistance, biofilm formation, and virulence determinants in uropathogenic Escherichia coli from Egyptian hospital. Ann Clin Microbiol Antimicrob 2024; 23:20. [PMID: 38402146 PMCID: PMC10894499 DOI: 10.1186/s12941-024-00679-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 02/11/2024] [Indexed: 02/26/2024] Open
Abstract
BACKGROUND Uropathogenic Escherichia coli (UPEC) is the main etiological agent behind community-acquired and hospital-acquired urinary tract infections (UTIs), which are among the most prevalent human infections. The management of UPEC infections is becoming increasingly difficult owing to multi-drug resistance, biofilm formation, and the possession of an extensive virulence arsenal. This study aims to characterize UPEC isolates in Tanta, Egypt, with regard to their antimicrobial resistance, phylogenetic profile, biofilm formation, and virulence, as well as the potential associations among these factors. METHODS One hundred UPEC isolates were obtained from UTI patients in Tanta, Egypt. Antimicrobial susceptibility was assessed using the Kirby-Bauer method. Extended-spectrum β-lactamases (ESBLs) production was screened using the double disk synergy test and confirmed with PCR. Biofilm formation was evaluated using the microtiter-plate assay and microscopy-based techniques. The phylogenetic groups of the isolates were determined. The hemolytic activity, motility, siderophore production, and serum resistance of the isolates were also evaluated. The clonal relatedness of the isolates was assessed using ERIC-PCR. RESULTS Isolates displayed elevated resistance to cephalosporins (90-43%), sulfamethoxazole-trimethoprim (63%), and ciprofloxacin (53%). Ninety percent of the isolates were multidrug-resistant (MDR)/ extensively drug-resistant (XDR) and 67% produced ESBLs. Notably, there was an inverse correlation between biofilm formation and antimicrobial resistance, and 31%, 29%, 32%, and 8% of the isolates were strong, moderate, weak, and non-biofilm producers, respectively. Beta-hemolysis, motility, siderophore production, and serum resistance were detected in 64%, 84%, 65%, and 11% of the isolates, respectively. Siderophore production was correlated to resistance to multiple antibiotics, while hemolysis was more prevalent in susceptible isolates and associated with stronger biofilms. Phylogroups B2 and D predominated, with lower resistance and stronger biofilms in group B2. ERIC-PCR revealed considerable diversity among the isolates. CONCLUSION This research highlights the dissemination of resistance in UPEC in Tanta, Egypt. The evident correlation between biofilm and resistance suggests a resistance cost on bacterial cells; and that isolates with lower resistance may rely on biofilms to enhance their survival. This emphasizes the importance of considering biofilm formation ability during the treatment of UPEC infections to avoid therapeutic failure and/or infection recurrence.
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Affiliation(s)
- Sara A Alshaikh
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, 31511, Egypt.
| | - Tarek El-Banna
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, 31511, Egypt
| | - Fatma Sonbol
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, 31511, Egypt
| | - Mahmoud H Farghali
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Tanta University, Tanta, 31511, Egypt
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Aworh MK, Thakur S, Gensler C, Harrell E, Harden L, Fedorka-Cray PJ, Jacob M. Characteristics of antimicrobial resistance in Escherichia coli isolated from retail meat products in North Carolina. PLoS One 2024; 19:e0294099. [PMID: 38180979 PMCID: PMC10769054 DOI: 10.1371/journal.pone.0294099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND Escherichia coli is commonly used as an indicator for antimicrobial resistance (AMR) in food, animal, environment, and human surveillance systems. Our study aimed to characterize AMR in E. coli isolated from retail meat purchased from grocery stores in North Carolina, USA as part of the National Antimicrobial Resistance Monitoring System (NARMS). MATERIALS AND METHODS Retail chicken (breast, n = 96; giblets, n = 24), turkey (n = 96), and pork (n = 96) products were purchased monthly from different counties in North Carolina during 2022. Label claims on packages regarding antibiotic use were recorded at collection. E. coli was isolated from meat samples using culture-based methods and isolates were characterized for antimicrobial resistance using whole genome sequencing. Multi-locus sequence typing, phylogroups, and a single nucleotide polymorphism (SNP)-based maximum-likelihood phylogenic tree was generated. Data were analyzed statistically to determine differences between antibiotic use claims and meat type. RESULTS Of 312 retail meat samples, 138 (44.2%) were positive for E. coli, with turkey (78/138; 56.5%) demonstrating the highest prevalence. Prevalence was lower in chicken (41/138; 29.7%) and pork (19/138;13.8%). Quality sequence data was available from 84.8% (117/138) of the E. coli isolates, which included 72 (61.5%) from turkey, 27 (23.1%) from chicken breast, and 18 (15.4%) from pork. Genes associated with AMR were detected in 77.8% (91/117) of the isolates and 35.9% (42/117) were defined as multidrug resistant (MDR: being resistant to ≥3 distinct classes of antimicrobials). Commonly observed AMR genes included tetB (35%), tetA (24.8%), aph(3'')-lb (24.8%), and blaTEM-1 (20.5%), the majority of which originated from turkey isolates. Antibiotics use claims had no statistical effect on MDR E. coli isolates from the different meat types (X2 = 2.21, p = 0.33). MDR was observed in isolates from meat products with labels indicating "no claims" (n = 29; 69%), "no antibiotics ever" (n = 9; 21.4%), and "organic" (n = 4; 9.5%). Thirty-four different replicon types were observed. AMR genes were carried on plasmids in 17 E. coli isolates, of which 15 (88.2%) were from turkey and two (11.8%) from chicken. Known sequence types (STs) were described for 81 E. coli isolates, with ST117 (8.5%), ST297 (5.1%), and ST58 (3.4%) being the most prevalent across retail meat types. The most prevalent phylogroups were B1 (29.1%) and A (28.2%). Five clonal patterns were detected among isolates. CONCLUSIONS E. coli prevalence and the presence of AMR and MDR were highest in turkey retail meat. The lack of an association between MDR E. coli in retail meat and antibiotic use claim, including those with no indication of antimicrobial use, suggests that additional research is required to understand the origin of resistance. The presence of ST117, an emerging human pathogen, warrants further surveillance. The isolates were distinctly diverse suggesting an instability in population dynamics.
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Affiliation(s)
- Mabel Kamweli Aworh
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Siddhartha Thakur
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Catherine Gensler
- Department of Agricultural and Human Sciences, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Erin Harrell
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Lyndy Harden
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Paula J. Fedorka-Cray
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
| | - Megan Jacob
- Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States of America
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Gelalcha BD, Mohammed RI, Gelgie AE, Kerro Dego O. Molecular epidemiology and pathogenomics of extended-spectrum beta-lactamase producing- Escherichia coli and - Klebsiella pneumoniae isolates from bulk tank milk in Tennessee, USA. Front Microbiol 2023; 14:1283165. [PMID: 38029210 PMCID: PMC10658008 DOI: 10.3389/fmicb.2023.1283165] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 10/09/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The rise in extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae in dairy cattle farms poses a risk to human health as they can spread to humans through the food chain, including raw milk. This study was designed to determine the status, antimicrobial resistance, and pathogenic potential of ESBL-producing -E. coli and -Klebsiella spp. isolates from bulk tank milk (BTM). Methods Thirty-three BTM samples were collected from 17 dairy farms and screened for ESBL-E. coli and -Klebsiella spp. on CHROMagar ESBL plates. All isolates were confirmed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) and subjected to antimicrobial susceptibility testing and whole genome sequencing (WGS). Results Ten presumptive ESBL-producing bacteria, eight E. coli, and two K. pneumoniae were isolated. The prevalence of ESBL-E. coli and -K. pneumoniae in BTM was 21.2% and 6.1%, respectively. ESBL-E. coli were detected in 41.2% of the study farms. Seven of the ESBL-E. coli isolates were multidrug resistant (MDR). The two ESBL-producing K. pneumoniae isolates were resistant to ceftriaxone. Seven ESBL-E. coli strains carry the blaCTX-M gene, and five of them co-harbored blaTEM-1. ESBL-E. coli co-harbored blaCTX-M with other resistance genes, including qnrB19, tet(A), aadA1, aph(3'')-Ib, aph(6)-Id), floR, sul2, and chromosomal mutations (gyrA, gyrB, parC, parE, and pmrB). Most E. coli resistance genes were associated with mobile genetic elements, mainly plasmids. Six sequence types (STs) of E. coli were detected. All ESBL-E. coli were predicted to be pathogenic to humans. Four STs (three ST10 and ST69) were high-risk clones of E. coli. Up to 40 virulence markers were detected in all E. coli isolates. One of the K. pneumoniae was ST867; the other was novel strain. K. pneumoniae isolates carried three types of beta-lactamase genes (blaCTX-M, blaTEM-1 and blaSHV). The novel K. pneumoniae ST also carried a novel IncFII(K) plasmid ST. Conclusion Detection of high-risk clones of MDR ESBL-E. coli and ESBL-K. pneumoniae in BTM indicates that raw milk could be a reservoir of potentially zoonotic ESBL-E. coli and -K. pneumoniae.
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Affiliation(s)
- Benti D. Gelalcha
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
| | - Ruwaa I. Mohammed
- Department of Genome Science and Technology, The University of Tennessee, Knoxville, TN, United States
| | - Aga E. Gelgie
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
| | - Oudessa Kerro Dego
- Department of Animal Science, The University of Tennessee, Knoxville, TN, United States
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Sauget M, Atchon AK, Valot B, Garch FE, de Jong A, Moyaert H, Hocquet D. Genome analysis of third-generation cephalosporin-resistant Escherichia coli and Salmonella species recovered from healthy and diseased food-producing animals in Europe. PLoS One 2023; 18:e0289829. [PMID: 37883425 PMCID: PMC10602299 DOI: 10.1371/journal.pone.0289829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 07/26/2023] [Indexed: 10/28/2023] Open
Abstract
The animal reservoir of Enterobacterales producing Extended-Spectrum-β-Lactamases (ESBL) and plasmid-borne cephalosporinases (pAmpC) is a global concern. Using genome data, we analyzed a population of Escherichia coli and Salmonella species resistant to third-generation cephalosporins (3GC-R) recovered from healthy food animals (HA) and diseased food animals (DA) across Europe. Among the isolates collected from HA (n = 4,498) and DA (n = 833) in up to twelve European countries, 62 (1.4%) and 45 (5.4%) were 3GC-R, respectively. The genomes of these 3GC-R 107 isolates were sequenced to identify blaESBL and blaAmpC, sequence types (STs), virulence-associated genes, and Salmonella serovars. We also assessed their population structure using core genome multilocus sequence typing. The 78 3GC-R Escherichia coli originated from poultry (n = 27), swine (n = 26), and cattle (n = 25). Almost all (n = 77; 98.7%) harbored at least one blaESBL or blaAmpC, with blaCTX-M-1 predominating. We identified 51 STs, with ST10 and ST101 being the most frequent. The population of 3GC-R E. coli was polyclonal. The 29 3GC-R Salmonella spp. were mostly retrieved from healthy broiler (96.5%). blaCMY-2 dominated in this population. We found two clusters of CMY-2-producing Salmonella spp. in Germany: one with 15 isolates of S. Heidelberg isolates and another with six S. Minnesota, all of them with blaCMY-2. Our results confirm the low prevalence of 3GC-R E. coli and Salmonella spp. in HA and DA. blaCTX-M-1 was dominating in a highly diverse population of E. coli. 3GC-R E.coli isolated from HA and DA were genetically unrelated, with high clonal diversity suggesting multiple origins of contamination. This contrasted with the clonal population of 3GC-R Salmonella spp. in which blaCMY-2 dominated through two dominant serovars in this collection.
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Affiliation(s)
- Marlène Sauget
- Service D’hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France
| | - Alban K. Atchon
- Bioinformatique et Big Data au Service de la Santé, UFR Santé, Université de Bourgogne Franche-Comté, Besançon, France
- UMR 6249 CNRS Chrono-Environnement, Université de Bourgogne Franche-Comté, Besançon, France
| | - Benoît Valot
- Bioinformatique et Big Data au Service de la Santé, UFR Santé, Université de Bourgogne Franche-Comté, Besançon, France
- UMR 6249 CNRS Chrono-Environnement, Université de Bourgogne Franche-Comté, Besançon, France
| | - Farid El Garch
- Vétoquinol SA, Global Drug Development Center, Lure, France
- EASSA and VetPath Study Group, CEESA, Brussels, Belgium
| | - Anno de Jong
- EASSA and VetPath Study Group, CEESA, Brussels, Belgium
| | - Hilde Moyaert
- EASSA and VetPath Study Group, CEESA, Brussels, Belgium
- Zoetis Belgium SA, Veterinary Medicine Research and Development, Zaventem, Belgium
| | - Didier Hocquet
- Service D’hygiène Hospitalière, Centre Hospitalier Universitaire, Besançon, France
- Bioinformatique et Big Data au Service de la Santé, UFR Santé, Université de Bourgogne Franche-Comté, Besançon, France
- UMR 6249 CNRS Chrono-Environnement, Université de Bourgogne Franche-Comté, Besançon, France
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Furmanek-Blaszk B, Sektas M, Rybak B. High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland. Int J Mol Sci 2023; 24:12804. [PMID: 37628984 PMCID: PMC10454011 DOI: 10.3390/ijms241612804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
In this study, we investigated the occurrence of plasmid-mediated quinolone resistance (PMQR) in extended-spectrum β-lactamase- (ESBL) and/or AmpC-type β-lactamase-producing Enterobacterales isolates from free-living birds in Poland. The prevalence of the qnrB19 gene was 63%, and the distribution of isolates in terms of bacterial species was as follows: 67% (22/33) corresponded to Escherichia coli, 83% (5/6) to Rahnella aquatilis, 44% (4/9) to Enterobacter cloacae and 33% (1/3) to Klebsiella pneumoniae. The qnrB19 gene was also found in a single isolate of Citrobacter freundii. The molecular characteristics of qnrB19-positive isolates pointed to extended-spectrum beta lactamase CTX-M as the most prevalent one (89%) followed by TEM (47%), AmpC (37%) and SHV (16%). This study demonstrates the widespread occurrence of PMQR-positive and ESBL/AmpC-producing Enterobacterales isolates in fecal samples from wild birds. In this work, plasmid pAM1 isolated from Escherichia coli strain SN25556 was completely sequenced. This plasmid is 3191 nucleotides long and carries the qnrB19 gene, which mediates decreased susceptibility to quinolones. It shares extensive homology with other previously described small qnrB19-harboring plasmids. The nucleotide sequence of pAM1 showed a variable region flanked by an oriT locus and a Xer recombination site. The presence of a putative recombination site was detected, suggesting that interplasmid recombination events might have played a role in the development of pAM1. Our results highlight the broad geographical spread of ColE-type Qnr resistance plasmids in clinical and environmental isolates of Enterobacterales. As expected from the results of phenotypic susceptibility testing, no resistance genes other than qnrB19 were identified.
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Affiliation(s)
- Beata Furmanek-Blaszk
- Department of Microbiology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;
| | - Marian Sektas
- Department of Microbiology, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland;
| | - Bartosz Rybak
- Department of Environmental Toxicology, Faculty of Health Sciences with Institute of Maritime and Tropical Medicine, Medical University of Gdansk, Debowa Str. 23A, 80-204 Gdansk, Poland;
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Lee KY, Lavelle K, Huang A, Atwill ER, Pitesky M, Li X. Assessment of Prevalence and Diversity of Antimicrobial Resistant Escherichia coli from Retail Meats in Southern California. Antibiotics (Basel) 2023; 12:antibiotics12040782. [PMID: 37107144 PMCID: PMC10135137 DOI: 10.3390/antibiotics12040782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/10/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
Retail meat products may serve as reservoirs and conduits for antimicrobial resistance, which is frequently monitored using Escherichia coli as indicator bacteria. In this study, E. coli isolation was conducted on 221 retail meat samples (56 chicken, 54 ground turkey, 55 ground beef, and 56 pork chops) collected over a one-year period from grocery stores in southern California. The overall prevalence of E. coli in retail meat samples was 47.51% (105/221), with E. coli contamination found to be significantly associated with meat type and season of sampling. From antimicrobial susceptibility testing, 51 isolates (48.57%) were susceptible to all antimicrobials tested, 54 (51.34%) were resistant to at least 1 drug, 39 (37.14%) to 2 or more drugs, and 21 (20.00%) to 3 or more drugs. Resistance to ampicillin, gentamicin, streptomycin, and tetracycline were significantly associated with meat type, with poultry counterparts (chicken or ground turkey) exhibiting higher odds for resistance to these drugs compared to non-poultry meats (beef and pork). From the 52 E. coli isolates selected to undergo whole-genome sequencing (WGS), 27 antimicrobial resistance genes (ARGs) were identified and predicted phenotypic AMR profiles with an overall sensitivity and specificity of 93.33% and 99.84%, respectively. Clustering assessment and co-occurrence networks revealed that the genomic AMR determinants of E. coli from retail meat were highly heterogeneous, with a sparsity of shared gene networks.
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Affiliation(s)
- Katie Yen Lee
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616, USA
- Western Institute for Food Safety and Security, University of California, Davis, Davis, CA 95616, USA
| | - Kurtis Lavelle
- Western Institute for Food Safety and Security, University of California, Davis, Davis, CA 95616, USA
| | - Anny Huang
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616, USA
| | - Edward Robert Atwill
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616, USA
| | - Maurice Pitesky
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, Davis, CA 95616, USA
| | - Xunde Li
- Western Institute for Food Safety and Security, University of California, Davis, Davis, CA 95616, USA
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