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Biswas U, Das S, Barik M, Mallick A. Situation Report on mcr-Carrying Colistin-Resistant Clones of Enterobacterales: A Global Update Through Human-Animal-Environment Interfaces. Curr Microbiol 2023; 81:12. [PMID: 37989899 DOI: 10.1007/s00284-023-03521-8] [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: 07/10/2023] [Accepted: 10/10/2023] [Indexed: 11/23/2023]
Abstract
In the twenty-first century, antibiotic resistance (ABR) is one of the acute medical emergencies around the globe, overwhelming human-animal-environmental interfaces. Hit-or-mis use of antibiotics exacerbates the crisis of ABR, dispersing transferable resistance traits and challenging treatment regimens based on life-saving drugs such as colistin. Colistin is the highest priority critically important antimicrobials for human medicine, but its long use as a growth promoter in animal husbandry reduces clinical efficacy. Since 2015, the emergence and spread of mobile colistin resistance (mcr)-carrying colistin-resistant clones of Enterobacterales have been markedly sustained in both humans and animals, especially in developing countries. Hospital and community transmissions of mcr clones pose a high risk for infection prevention and outbreaks at the national and international levels. Several public health and limited one health studies have highlighted the genomic insights of mcr clones, clarifying the chromosomal sequence types (STs) and plasmid incompatibility (Inc) types. But this information is segregated into humans and animals, and rarely are environmental sectors complicating the understanding of possibly intercontinental and sectoral transmission of these clones. India is the hotspot for superbugs, including mcr-carrying colistin-resistant isolates that threaten cross-border transmission. The current review provided an up-to-date worldwide scenario of mcr-carrying STs and plasmid Inc types among the Gram-negative bacilli of Enterobacterales across human-animal-environmental interfaces and correlated with the available information from India.
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Affiliation(s)
- Urmy Biswas
- Biomedical Laboratory Science and Management, Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Surojit Das
- Biomedical Laboratory Science and Management, Vidyasagar University, Midnapore, West Bengal, 721102, India.
| | - Mili Barik
- Biomedical Laboratory Science and Management, Vidyasagar University, Midnapore, West Bengal, 721102, India
| | - Abhi Mallick
- Biomedical Laboratory Science and Management, Vidyasagar University, Midnapore, West Bengal, 721102, India
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Seethalakshmi PS, Rajeev R, Prabhakaran A, Kiran GS, Selvin J. The menace of colistin resistance across globe: Obstacles and opportunities in curbing its spread. Microbiol Res 2023; 270:127316. [PMID: 36812837 DOI: 10.1016/j.micres.2023.127316] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 11/27/2022] [Accepted: 02/01/2023] [Indexed: 02/11/2023]
Abstract
Colistin-resistance in bacteria is a big concern for public health, since it is a last resort antibiotic to treat infectious diseases of multidrug resistant and carbapenem resistant Gram-negative pathogens in clinical settings. The emergence of colistin resistance in aquaculture and poultry settings has escalated the risks associated with colistin resistance in environment as well. The staggering number of reports pertaining to the rise of colistin resistance in bacteria from clinical and non-clinical settings is disconcerting. The co-existence of colistin resistant genes with other antibiotic resistant genes introduces new challenges in combatting antimicrobial resistance. Some countries have banned the manufacture, sale and distribution of colistin and its formulations for food producing animals. However, to tackle the issue of antimicrobial resistance, a one health approach initiative, inclusive of human, animal, and environmental health needs to be developed. Herein, we review the recent reports in colistin resistance in bacteria of clinical and non-clinical settings, deliberating on the new findings obtained regarding the development of colistin resistance. This review also discusses the initiatives implemented globally in mitigating colistin resistance, their strength and weakness.
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Affiliation(s)
- P S Seethalakshmi
- Department of Microbiology, Pondicherry University, Puducherry 605014, India.
| | - Riya Rajeev
- Department of Microbiology, Pondicherry University, Puducherry 605014, India.
| | | | - George Seghal Kiran
- Department of Food Science and Technology, Pondicherry University, Puducherry 605014, India.
| | - Joseph Selvin
- Department of Microbiology, Pondicherry University, Puducherry 605014, India.
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Haeili M, Barmudeh S, Omrani M, Zeinalzadeh N, Kafil HS, Batignani V, Ghodousi A, Cirillo DM. Whole-genome sequence analysis of clinically isolated carbapenem resistant Escherichia coli from Iran. BMC Microbiol 2023; 23:49. [PMID: 36850019 PMCID: PMC9969672 DOI: 10.1186/s12866-023-02796-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 02/16/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND The emergence of carbapenem-resistant Enterobacterales (CRE) continues to threaten public health due to limited therapeutic options. In the current study the incidence of carbapenem resistance among the 104 clinical isolates of Escherichia coli and the genomic features of carbapenem resistant isolates were investigated. METHODS The susceptibility to imipenem, tigecycline and colistin was tested by broth dilution method. Susceptibility to other classes of antimicrobials was examined by disk diffusion test. The presence of blaOXA-48, blaKPC, blaNDM, and blaVIM carbapenemase genes was examined by PCR. Molecular characteristics of carbapenem resistant isolates were further investigated by whole-genome sequencing (WGS) using Illumina and Nanopore platforms. RESULTS Four isolates (3.8%) revealed imipenem MIC of ≥32 mg/L and positive results for modified carbapenem inactivation method and categorized as carbapenem resistant E. coli (CREC). Colistin, nitrofurantoin, fosfomycin, and tigecycline were the most active agents against all isolates (total susceptibility rate of 99, 99, 96 and 95.2% respectively) with the last three compounds being found as the most active antimicrobials for carbapenem resistant isolates (susceptibility rate of 100%). According to Multilocus Sequence Type (MLST) analysis the 4 CREC isolates belonged to ST167 (n = 2), ST361 (n = 1) and ST648 (n = 1). NDM was detected in all CREC isolates (NDM-1 (n = 1) and NMD-5 (n = 3)) among which one isolate co-harbored NDM-5 and OXA-181 carbapenemases. WGS further detected blaCTX-M-15, blaCMY-145, blaCMY-42 and blaTEM-1 (with different frequencies) among CREC isolates. Co-occurrence of NDM-type carbapenemase and 16S rRNA methyltransferase RmtB and RmtC was found in two isolates belonging to ST167 and ST648. A colistin-carbapenem resistant isolate which was mcr-negative, revealed various amino acid substitutions in PmrB, PmrD and PhoPQ proteins. CONCLUSION About 1.9% of E. coli isolates studied here were resistant to imipenem, colistin and/or amikacin which raises the concern about the outbreaks of difficult-to-treat infection by these emerging superbugs in the future.
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Affiliation(s)
- Mehri Haeili
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
| | - Samaneh Barmudeh
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Maryam Omrani
- IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Narges Zeinalzadeh
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Virginia Batignani
- Emerging Bacterial Pathogens Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Arash Ghodousi
- Emerging Bacterial Pathogens Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy. .,Vita-Salute San Raffaele University, Milan, Italy.
| | - Daniela Maria Cirillo
- Emerging Bacterial Pathogens Unit, Division of Immunology, Transplantation and Infectious Diseases, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
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Shahbazi R, Salmanzadeh-Ahrabi S, Aslani MM, Alebouyeh M, Falahi J, Nikbin VS. The genotypic and phenotypic characteristics contributing to high virulence and antibiotics resistance in Escherichia coli O25-B2-ST131 in comparison to non- O25-B2-ST131. BMC Pediatr 2023; 23:59. [PMID: 36737722 PMCID: PMC9895973 DOI: 10.1186/s12887-023-03866-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 01/25/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Escherichia coli serogroup O25b-sequence type 131 (E. coli O25-B2-ST131) is considered as multidrug-resistant and hypervirulent organism. There is lack of data about involvement of this pathogen in the children's infection. In this study, the prevalence, and clonality, virulence capacity, and antibiotic resistance phenotype and genotype of E. coli O25-B2-ST131 compared with non-O25-B2-ST131 isolates were investigated in children with urinary tract infection in Tehran, Iran. METHODS The E. coli isolates from urine samples were identified using conventional microbiological methods. Characterization of E. coli O25-B2-ST131 clone, antibiotic susceptibility, biofilm formation, ESBLs phenotype and genotype, serum resistance, hemolysis, hydrophobicity, and formation of curli fimbriae were done using conventional microbiological and molecular methods. Clonality of the isolates was done by rep-PCR typing. RESULTS Among 120 E. coli isolates, the highest and lowest antibiotic resistance was detected against ampicillin (92, 76.6%) and imipenem 5, (4.1%), respectively. Sixty-eight (56.6%) isolates were ESBL-producing and 58 (48.3%) isolates were considered as multi-drug resistance (MDR). The prevalence of ESBL-producing and MDR isolates in O25-B2-ST131 strains was higher compared with the non-O25-B2-ST131 strains (p value < 0.05). O25-B2-ST131 strains showed significant correlation with serum resistance and biofilm formation. Amongst the resistance and virulence genes, the prevalence of iucD, kpsMTII, cnf1, vat, blaCTX-M-15, and blaSHV were significantly higher among O25-B2-ST131 isolates in comparison with non-O25-B2-ST131 isolates (p value < 0.05). Considering a ≥ 80% homology cut-off, fifteen different clusters of the isolates were shown with the same rep-PCR pattern. CONCLUSIONS Our results confirmed the involvement of MDR-ESBLs producing E. coli strain O25-B2-ST131 in the occurrence of UTIs among children. Source tracking and control measures seem to be necessary for containment of the spread of hypervirulent and resistance variants in children.
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Affiliation(s)
- Razieh Shahbazi
- grid.411354.60000 0001 0097 6984Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Deh Vank Ave., Tehran, 1993891176 Iran
| | - Siavosh Salmanzadeh-Ahrabi
- Department of Microbiology, Faculty of Biological Sciences, Alzahra University, Deh Vank Ave., Tehran, 1993891176, Iran.
| | - Mohammad Mehdi Aslani
- grid.420169.80000 0000 9562 2611Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran
| | - Masoud Alebouyeh
- grid.411600.2Pediatric Infections Research Center, Research for Children’s Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jamal Falahi
- Health Clinical Science Research Center, Zahedan Branch, Islamic Azad University, Zahedan, Iran
| | - Vajihe Sadat Nikbin
- grid.420169.80000 0000 9562 2611Department of Bacteriology, Pasteur Institute of Iran, Tehran, Iran
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Ge H, Qiao J, Xu H, Liu R, Chen R, Li C, Hu X, Zhou J, Guo X, Zheng B. First report of Klebsiella pneumoniae co-producing OXA-181, CTX-M-55, and MCR-8 isolated from the patient with bacteremia. Front Microbiol 2022; 13:1020500. [PMID: 36312943 PMCID: PMC9614159 DOI: 10.3389/fmicb.2022.1020500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/30/2022] [Indexed: 11/13/2022] Open
Abstract
The worldwide spread of carbapenem-resistant Enterobacteriaceae (CRE) has led to a major challenge to human health. In this case, colistin is often used to treat the infection caused by CRE. However, the coexistence of genes conferring resistance to carbapenem and colistin is of great concern. In this work, we reported the coexistence of blaOXA-181, blaCTX-M-55, and mcr-8 in an ST273 Klebsiella pneumoniae isolate for the first time. The species identification was performed using MALDI-TOF MS, and the presence of various antimicrobial resistance genes (ARGs) and virulence genes were detected by PCR and whole-genome sequencing. Antimicrobial susceptibility testing showed that K. pneumoniae 5589 was resistant to aztreonam, imipenem, meropenem, ceftriaxone, cefotaxime, ceftazidime, levofloxacin, ciprofloxacin, gentamicin, piperacillin-tazobactam, cefepime, and polymyxin B, but sensitive to amikacin. S1-pulsed-field gel electrophoresis (PFGE) and Southern blotting revealed the mcr-8 gene was carried on a ~ 138 kb plasmid with a conserved structure (IS903B-ymoA-inhA-mcr-8-copR-baeS-dgkA-ampC). In addition, blaOXA-181 was found on another ~51 kb plasmid with a composite transposon flanked by insertion sequence IS26. The in vitro conjugation experiments and plasmid sequence probe indicated that the plasmid p5589-OXA-181 and the p5589-mcr-8 were conjugative, which may contribute to the propagation of ARGs. Relevant detection and investigation measures should be taken to control the prevalence of pathogens coharboring blaOXA-181, blaCTX-M-55 and mcr-8.
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Affiliation(s)
- Haoyu Ge
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jie Qiao
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Hao Xu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ruishan Liu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Ruyan Chen
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Chenyu Li
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xinjun Hu
- Department of Infectious Diseases, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, China
| | - Jiawei Zhou
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaobing Guo
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Xiaobing Guo,
| | - Beiwen Zheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
- Department of Structure and Morphology, Jinan Microecological Biomedicine Shandong Laboratory, Jinan, Shandong, China
- Research Units of Infectious Diseases and Microecology, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Beiwen Zheng,
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Elbaradei A, Sayedahmed MS, El-Sawaf G, Shawky SM. Screening of mcr-1 among Gram-Negative Bacteria from Different Clinical Samples from ICU Patients in Alexandria, Egypt: One-Year Study. Pol J Microbiol 2022; 71:83-90. [PMID: 35635164 PMCID: PMC9152917 DOI: 10.33073/pjm-2022-011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/12/2022] [Indexed: 12/02/2022] Open
Abstract
Antimicrobial resistance represents a global dilemma. Our present study aimed to investigate the presence of mcr-1 among different Gram-negative bacteria including Enterobacteriaceae (except intrinsically resistant to colistin) and Pseudomonas aeruginosa. Gram-negative bacterial isolates were collected from different ICUs in several Alexandria hospitals from June 2019 to June 2020. The identification of these Gram-negative isolates was made using the VITEK-2® system (BioMérieux, France). SYBR Green-based PCR was used to screen for the presence of mcr-1 using a positive control that we amplified and sequenced earlier in our pilot study. All isolates were screened for the presence of mcr-1 regardless of their colistin susceptibility. Isolates that harbored mcr-1 were tested for colistin susceptibility and for the presence of some beta-lactamase genes. Klebsiella pneumoniae isolates harboring mcr-1 were capsule typed using the wzi sequence analysis. Four hundred eighty isolates were included in this study. Only six isolates harbored mcr-1.1. Of these, four were resistant to colistin, while two (K. pneumoniae and P. aeruginosa) were susceptible to colistin. Five of the six isolates were resistant to carbapenems. They harbored blaOXA-48, and three of them co-harbored blaNDM-1. K-58 was the most often found among our K. pneumoniae harboring mcr-1.1. To our knowledge, this is the first time to report colistin susceptible P. aeruginosa and K. pneumoniae harboring the mcr-1.1 gene in Egypt. Further studies are needed to investigate the presence of the mcr genes among colistin susceptible isolates to shed more light on its significance as a potential threat. ![]()
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Affiliation(s)
- Amira Elbaradei
- Department of Microbiology and Immunology, Faculty of Pharmacy , Pharos University in Alexandria , Alexandria , Egypt
- Alexandria University Hospital , Alexandria University , Alexandria , Egypt
| | - Mahrous S. Sayedahmed
- Department of Microbiology, Medical Research Institute , Alexandria University , Alexandria , Egypt
| | - Gamal El-Sawaf
- Department of Microbiology, Medical Research Institute , Alexandria University , Alexandria , Egypt
| | - Sherine M. Shawky
- Department of Microbiology, Medical Research Institute , Alexandria University , Alexandria , Egypt
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Kim JS, Yu JK, Jeon SJ, Park SH, Han S, Park SH, Kang M, Jang JI, Shin EK, Kim J, Hong CK, Lee JH, Hwang YO, Oh YH. Distribution of mcr genes among carbapenem-resistant Enterobacterales clinical isolates: High prevalence of mcr-positive Enterobacter cloacae complex in Seoul, Republic of Korea. Int J Antimicrob Agents 2021; 58:106418. [PMID: 34391904 DOI: 10.1016/j.ijantimicag.2021.106418] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 07/13/2021] [Accepted: 08/06/2021] [Indexed: 12/29/2022]
Abstract
Colistin is usually used as a drug of last resort against infections caused by multidrug-resistant gram-negative bacteria, including carbapenem-resistant Enterobacterales (CRE). Recently, the acquisition of mobile colistin resistance (mcr) genes by CRE is a cause for worry. Here, we investigated the prevalence of mcr genes in CRE isolates in Seoul, Korea. A total of 3,675 CRE strains were collected from patients between 2018 and 2019 and initially screened for mcr genes using multiplex-PCR assays. Upon the identification of mcr-harboring strains, colistin susceptibility tests, identification of carbapenemase and β-lactamase genes, and plasmid replicon typing were performed. Clonal analysis was conducted using pulsed-field gel electrophoresis. mcr genes were detected in 2.2% (80/3,675) CRE strains. There were three mcr-1, one mcr-4.3, one mcr-4.3/mcr-9, 58 mcr-9, one mcr-9/mcr-10, and 16 mcr-10 carriers from various Enterobacterales species, of which 60 were in Enterobacter cloacae complex (ECC) strains. The mcr prevalence in ECC was 20.5%. Molecular detection confirmed that 21.3% and 13.8% of the mcr-harboring strains shared blaNDM-1 or blaKPC-2, respectively. In addition, an IncHI2 replicon was identified in 71.7% of the mcr-9 strains. Comparative analysis revealed not only a notable diversity of mcr carriers, but also clonal spreading or nosocomial outbreak of some ECC strains. Our findings revealed a silent distribution of mcr in CRE strains with high genetic heterogeneity in Seoul, underscoring the urgent need for timely intervention to control and prevent mcr dissemination.
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Affiliation(s)
- Jin Seok Kim
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea.
| | - Jin Kyung Yu
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Su Jin Jeon
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Sang-Hun Park
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Sunghee Han
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - So Hyeon Park
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Minji Kang
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Jung Im Jang
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Eun-Kyung Shin
- Division of Bacterial Diseases, Korea Diseases Control and Prevention Agency, Chungcheongbuk-do, Republic of Korea
| | - Junyoung Kim
- Division of Bacterial Diseases, Korea Diseases Control and Prevention Agency, Chungcheongbuk-do, Republic of Korea
| | - Chae-Kyu Hong
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Jib-Ho Lee
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Young Ok Hwang
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
| | - Young-Hee Oh
- Bacteria Team, Seoul Metropolitan Government Research Institute of Public Health and Environment, Gyeonggi-do, Republic of Korea
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Song HJ, Moon DC, Mechesso AF, Kang HY, Kim MH, Choi JH, Kim SJ, Yoon SS, Lim SK. Resistance Profiling and Molecular Characterization of Extended-Spectrum/Plasmid-Mediated AmpC β-Lactamase-Producing Escherichia coli Isolated from Healthy Broiler Chickens in South Korea. Microorganisms 2020; 8:E1434. [PMID: 32962074 PMCID: PMC7564670 DOI: 10.3390/microorganisms8091434] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
We aimed to identify and characterize extended-spectrum β-lactamase (ESBL)-and/or plasmid-mediated AmpC β-lactamase (pAmpC)-producing Escherichia coli isolated from healthy broiler chickens slaughtered for human consumption in Korea. A total of 332 E. coli isolates were identified from 339 cloacal swabs in 2019. More than 90% of the isolates were resistant to multiple antimicrobials. ESBL/pAmpC-production was noted in 14% (46/332) of the isolates. Six of the CTX-M-β-lactamase-producing isolates were found to co-harbor at least one plasmid-mediated quinolone resistance gene. We observed the co-existence of blaCMY-2 and mcr-1 genes in the same isolate for the first time in Korea. Phylogenetic analysis demonstrated that the majority of blaCMY-2-carrying isolates belonged to subgroup D. Conjugation confirmed the transferability of blaCTX-M and blaCMY-2 genes, as well as non-β-lactam resistance traits from 60.9% (28/46) of the ESBL/pAmpC-producing isolates to a recipient E. coli J53. The ISECP, IS903, and orf477 elements were detected in the upstream or downstream regions. The blaCTX-M and blaCMY-2 genes mainly belonged to the IncI1, IncHI2, and/or IncFII plasmids. Additionally, the majority of ESBL/pAmpC-producing isolates exhibited heterogeneous PFGE profiles. This study showed that healthy chickens act as reservoirs of ESBL/pAmpC-producing E. coli that can potentially be transmitted to humans.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Suk-Kyung Lim
- Bacterial Disease Division, Animal and Plant Quarantine Agency, 177 Hyeksin 8-ro, Gimcheon-si, Gyeongsangbuk-do 39660, Korea; (H.-J.S.); (D.C.M.); (A.F.M.); (H.Y.K.); (M.H.K.); (J.-H.C.); (S.-J.K.); (S.-S.Y.)
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