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Ma Z, Wang B, Zeng D, Ding H, Zeng Z. Rapid Dissemination of blaNDM-5 Gene among Carbapenem-Resistant Escherichia coli Isolates in a Yellow-Feather Broiler Farm via Multiple Plasmid Replicon. Pathogens 2024; 13:387. [PMID: 38787239 PMCID: PMC11124502 DOI: 10.3390/pathogens13050387] [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: 03/17/2024] [Revised: 04/30/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
Although carbapenems have not been approved for animal use, carbapenem-resistant Escherichia coli (CREC) strains are increasingly being detected in food-producing animals, posing a significant public health risk. However, the epidemiological characteristics of CREC isolates in yellow-feather broiler farms remain unclear. We comprehensively investigated the genetic features of carbapenem-resistance genes among E. coli isolates recovered from a yellow-feather broiler farm in Guangdong province, China. Among the 172 isolates, 88 (51.2%) were recovered from chicken feces (88.5%, 54/61), the farm environment (51.1%, 24/47), and specimens of dead chickens (15.6%, 41/64). All CREC isolates were positive for the blaNDM-5 gene and negative for other carbapenem-resistance genes. Among 40 randomly selected isolates subjected to whole-genome sequencing, 10 belonged to distinct sequence types (STs), with ST167 (n = 12) being the most prevalent across different sources, suggesting that the dissemination of blaNDM-5 was mainly due to horizontal and clonal transmission. Plasmid analysis indicated that IncX3, IncHI2, and IncR-X1-X3 hybrid plasmids were responsible for the rapid transmission of the blaNDM-5 gene, and the genetic surrounding of blaNDM-5 contained a common mobile element of the genetic fragment designated "IS5-△ISAba125-blaNDM-5-bleMBL-trpF-dsbC". These findings demonstrate a critical role of multiple plasmid replicons in the dissemination of blaNDM-5 and carbapenem resistance.
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Affiliation(s)
- Zhenbao Ma
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou 510642, China; (Z.M.); (B.W.); (D.Z.)
- Animal Husbandry and Fisheries Research Center of Guangdong Haid Group Co., Ltd., Guangzhou 511490, China
| | - Bo Wang
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou 510642, China; (Z.M.); (B.W.); (D.Z.)
| | - Dongping Zeng
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou 510642, China; (Z.M.); (B.W.); (D.Z.)
| | - Huanzhong Ding
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou 510642, China; (Z.M.); (B.W.); (D.Z.)
| | - Zhenling Zeng
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou 510642, China; (Z.M.); (B.W.); (D.Z.)
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Li Y, Li R, Hou J, Sun X, Wang Y, Li L, Yang F, Yao Y, An Y. Mobile genetic elements affect the dissemination of antibiotic resistance genes (ARGs) of clinical importance in the environment. ENVIRONMENTAL RESEARCH 2024; 243:117801. [PMID: 38043895 DOI: 10.1016/j.envres.2023.117801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 12/05/2023]
Abstract
The prevalence of antibiotic resistance genes (ARGs) in the environment is a quintessential One Health issue that threats both human and ecosystem health; however, the source and transmission of ARGs, especially clinically important ARGs (CLIARGs), in the environment have not yet been well studied. In the present study, shotgun metagenomic approaches were used to characterize the microbiome, resistome, and mobilome composition in human feces and six different environment sample types in South China. Overall, the resistome harbored 157 CLIARGs, with specific ARG hotspots (e.g., human feces, wastewater treatment plants, livestock manure and wastewater) excreting significantly higher abundance of CLIARGs compared with the natural environment. A redundancy analysis (RDA) was performed and revealed that the bacterial community compositions and mobile genetic elements (MGEs) explained 55.08% and 34.68% of the variations in ARG abundance, respectively, indicating that both bacterial community and MGEs are key contributors to the maintenance and dissemination of CLIARGs in the environment. The network analysis revealed non-random co-occurrence patterns between 200 bacterial genera and 147 CLIARGs, as well as between 135 MGEs and 123 CLIARGs. In addition to numerous co-shared CLIARGs among different sample types, the source tracking program based on the FEAST probabilistic model was used to estimate the relative contributions of the CLIARGs from potential sources to the natural environment. The source tracking analysis results delineated that mobilome, more than microbiome, contributed CLIARG transmission from those ARG hotspots into natural environment, and the MGEs in WWTPs seem to play the most significant role in the spread of CLIARGs to the natural environment (average contribution 32.9%-46.4%). Overall, this study demonstrated the distribution and dissemination of CLIARGs in the environment, and aimed to better inform strategies to control the spread of CLIARGs into the natural environment.
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Affiliation(s)
- Ye Li
- School of Environment Science and Engineering, Tianjin University, Tianjin, 300350, China; Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Ruilin Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Jie Hou
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
| | - Xuan Sun
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Yajun Wang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Linyun Li
- Ministry of Social and Ecological Civilization, Party School of Hebei Provincial Committee of C.P.C, China
| | - Fengxia Yang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China
| | - Yanpo Yao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
| | - Yi An
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin, 300191, China.
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Furlan JPR, Ramos MS, Dos Santos LDR, da Silva Rosa R, Stehling EG. Multidrug-resistant Shiga toxin-producing Escherichia coli and hybrid pathogenic strains of bovine origin. Vet Res Commun 2023; 47:1907-1913. [PMID: 37199834 DOI: 10.1007/s11259-023-10141-x] [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: 08/08/2022] [Accepted: 05/14/2023] [Indexed: 05/19/2023]
Abstract
Antimicrobial-resistant Escherichia coli strains have been circulating in various sectors and can be cross-transferred between them. Among pathogenic E. coli strains, Shiga toxin-producing E. coli (STEC) and hybrid pathogenic E. coli (HyPEC) emerged as responsible for outbreaks worldwide. As bovine are reservoir of STEC strains, these pathogens primarily spread to food products, exposing humans to risk. Therefore, this study aimed to characterize antimicrobial-resistant and potentially pathogenic E. coli strains from fecal samples of dairy cattle. In this regard, most E. coli strains (phylogenetic groups A, B1, B2, and E) were resistant to β-lactams and non-β-lactams and were classified as multidrug-resistant (MDR). Antimicrobial resistance genes (ARGs) related to multidrug resistance profiles were detected. Furthermore, mutations in fluoroquinolone and colistin resistance determinants were also identified, highlighting the deleterious mutation His152Gln in PmrB that may have contributed to the high level (> 64 mg/L) of colistin resistance. Virulence genes of diarrheagenic and extraintestinal pathogenic E. coli (ExPEC) pathotypes were shared among strains and even within the same strain, evidencing the presence of HyPEC (i.e., ExPEC/STEC), which were assigned as unusual B2-ST126-H3 and B1-ST3695-H31. These findings provide phenotypic and molecular data of MDR, ARGs-producing, and potentially pathogenic E. coli strains in dairy cattle, contributing to the monitoring of antimicrobial resistance and pathogens in healthy animals and alerting to potential bovine-associated zoonotic infections.
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Affiliation(s)
- João Pedro Rueda Furlan
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - Micaela Santana Ramos
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - Lucas David Rodrigues Dos Santos
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - Rafael da Silva Rosa
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil
| | - Eliana Guedes Stehling
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av. do Café, S/N, Monte Alegre, Ribeirão Preto, 14040-903, Brazil.
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Li Y, Shao K, Cai R, Liu Y, Liu X, Ni F, Zheng H, Hu R, Sun T. Detection of NDM-1 and OXA-10 Co-Producing Providencia rettgeri Clinical Isolate. Infect Drug Resist 2023; 16:5319-5328. [PMID: 37601562 PMCID: PMC10439778 DOI: 10.2147/idr.s418131] [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: 05/07/2023] [Accepted: 07/11/2023] [Indexed: 08/22/2023] Open
Abstract
Background The coexistence of blaNDM-1 with other resistance determinants is rarely reported for Providencia rettgeri. Therefore, this study investigates the phenotypic and genetic characteristics of a multidrug-resistant P. rettgeri strain YQ150713. Methods P. rettgeri YQ150713 was identified as carrying blaNDM-1. S1-pulsed-field gel electrophoresis (S1-PFGE), Southern blotting, and conjugation experiments were used to determine plasmid characteristics. An antimicrobial susceptibility test was conducted. The complete genomic sequence of YQ150713 was obtained using Illumina NovaSeq 6000 and Oxford nanopore platforms. To further characterize the phylogenetic structure of P. rettgeri YQ150713, average nucleotide identity (ANI) and phylogenetic analyses were conducted. Results The S1-PFGE, Southern blot, and conjugation assays have confirmed that the isolate P. rettgeri YQ150713 contains the blaNDM-1 gene on a conjugative plasmid pYQ150713-NDM-1. Antimicrobial susceptibility testing has indicated that strain YQ150713 was resistant to various common antibiotics, except aztreonam and fosfomycin. Bioinformatics analysis has further shown that pYQ150713-NDM-1 was a novel plasmid with a size of 265,883 bp, and blaNDM-1 and blaOXA-10 were co-located on it. Phylogenetic analysis suggesting P. rettgeri has spread widely throughout the world. Conclusion In this study, blaNDM-1 and blaOXA-10 were co-localized on a novel plasmid pYQ150713-NDM-1 with a horizontal transfer function. To reduce the risk of the dissemination of such P. rettgeri isolates in clinical settings, more surveillance will be required in the future.
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Affiliation(s)
- Yaling Li
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Kaiyang Shao
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Ruyi Cai
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Yi 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, Zhejiang, People’s Republic of China
| | - Xiaojing 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, Zhejiang, People’s Republic of China
- Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, People’s Republic of China
| | - Feihua Ni
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Huiyan Zheng
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Ruying Hu
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
| | - Ting Sun
- Department of Health Management Center, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, People’s Republic of China
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Hu X, Chen Y, Xu H, Qiao J, Ge H, Liu R, Zheng B. Genomic epidemiology and transmission characteristics of mcr1-positive colistin-resistant Escherichia coli strains circulating at natural environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163600. [PMID: 37086987 DOI: 10.1016/j.scitotenv.2023.163600] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 04/14/2023] [Accepted: 04/15/2023] [Indexed: 05/03/2023]
Abstract
MCR-positive Escherichia coli (MCRPEC) have been reported in humans worldwide. The high prevalence of mcr-1 poses clinical and environmental risks due to its diverse genetic mechanisms. Given the vital role of animals and the environment in the spread of antibiotic resistance, a "One Health" perspective should be taken when addressing antimicrobial resistance issues. This study conducted a prospective study in six farms (located in Jiaxing City, Zhejiang province, China) in 2019. MCRPEC strains were screened from samples of different sources. The molecular epidemiological surveys and transmission potential were investigated by whole-genome sequencing and phylogenetic analysis. MCRPEC were detected in different farms with various sources. Sequence type complex 10 was dominant and distributed widely in multiple sources. Core-genome multilocus sequence type (cgMLST) analysis indicated that clonal transmission could occur within and between farms. In addition, mcr-1 genes with different locations showed different transmission tendencies. The study indicated that interspecies and cross-regional transmission of MCRPEC could occur between different sectors in farms. Further surveillance and research of non-clinical MCRPEC strains are necessary to reduce the threat of MCRPEC.
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Affiliation(s)
- Xinjun Hu
- Department of Infectious Diseases, The First Affiliated Hospital, College of Clinical Medicine, Henan University of Science and Technology, Luoyang, 471000, China
| | - Yingying Chen
- Department of Neurosurgery, Shaoxing People's Hospital, Shaoxing Hospital, Zhejiang University School of Medicine, Shaoxing 312000, 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, Zhejiang University School of Medicine, Hangzhou 310000, 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, Zhejiang University School of Medicine, Hangzhou 310000, China
| | - 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, Zhejiang University School of Medicine, Hangzhou 310000, 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, Zhejiang University School of Medicine, Hangzhou 310000, China.
| | - 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, Zhejiang University School of Medicine, Hangzhou 310000, China
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Li G, Li X, Wu Y, Xu J, He F. Genomic Insights into the Colistin Resistant mcr-Carrying Escherichia coli Strains in a Tertiary Hospital in China. Antibiotics (Basel) 2022; 11:1522. [PMID: 36358177 PMCID: PMC9686615 DOI: 10.3390/antibiotics11111522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 10/25/2022] [Accepted: 10/29/2022] [Indexed: 08/27/2023] Open
Abstract
Colistin is an important antimicrobial agent in the treatment of infections caused by multidrug resistant (MDR) Gram-negative bacteria. The horizontal transfer of mobile colistin resistance gene (mcr) poses a major threat to the public health worldwide. In this study, a total of thirteen mcr-carrying Escherichia coli (MCREC) strains were recovered from a tertiary hospital in Zhejiang, China, between 2016 and 2019. The minimum inhibitory concentration (MIC) of antimicrobial agents, epidemiological characteristics, and transmission dynamics of mcr-carrying isolates were analyzed using antimicrobial susceptibility testing, whole-genome sequencing, S1 nuclease pulsed-field gel electrophoresis (S1-PFGE), and southern blotting analysis. All strains were discovered to be resistant to colistin, and the majority displayed MDR phenotype. However, none of the 13 MCREC strains were resistant to carbapenems. The 13 MCREC isolates were divided into 10 different STs, including ST744, ST156, ST453, ST410, ST57, ST131, ST7034, ST2599, ST457, and ST13239, in which ST13239 was discovered for the first time. Based on core genome single nucleotide polymorphism (cgSNP) analysis, no clear epidemiological link was discovered in these strains with the exception of EC2118 and EC3807, which differ by just one SNP. A total of 35 antimicrobial resistance genes which can be divided into 14 classes were identified from the 13 MCREC isolates. According to S1-PFGE and southern blotting analyses, all 13 MCREC strains had plasmid-mediated mcr-1, and nine of them carried conjugative plasmids. In conclusion, our study revealed the emergence and dissemination of colistin-resistant E. coli isolates carrying mcr-1 in a Chinese hospital, which poses a potential risk to anti-infective therapy. More efforts should be taken to monitor the prevalence of mcr-1-carrying bacteria in China.
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Affiliation(s)
- Guoli Li
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Xinyang Li
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Yuye Wu
- Department of Clinical Laboratory, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou 310016, China
| | - Juan Xu
- School of Public Health, Hangzhou Medical College, Hangzhou 310013, China
| | - Fang He
- Laboratory Medicine Center, Department of Clinical Laboratory, Zhejiang Provincial People’s Hospital, Affiliated People’s Hospital, Hangzhou Medical College, Hangzhou 310014, China
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Qiu T, Huo L, Guo Y, Gao M, Wang G, Hu D, Li C, Wang Z, Liu G, Wang X. Metagenomic assembly reveals hosts and mobility of common antibiotic resistome in animal manure and commercial compost. ENVIRONMENTAL MICROBIOME 2022; 17:42. [PMID: 35953830 PMCID: PMC9367140 DOI: 10.1186/s40793-022-00437-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/29/2022] [Indexed: 05/10/2023]
Abstract
BACKGROUND Antibiotics and antibiotic resistance genes (ARGs) used in intensive animal farming threaten human health worldwide; however, the common resistome, ARG mobility, and ARG host composition in different animal manures and mixed manure composts remain unclear. In the present study, metagenomic assembly and cross-sample mapping were used to comprehensively decipher the common resistome and its potential mobility and hosts in animal manure and composts. RESULTS In total, 201 ARGs were shared among different animal (layer, broiler, swine, beef cow, and dairy cow) manures and accounted for 86-99% of total relative abundance of ARGs. Except for multidrug, sulfonamide, and trimethoprim resistance genes, the relative abundance of most ARGs in composts was significantly lower than that in animal manure. Procrustes analysis indicated that antibiotic residues positively correlated with ARG composition in manure but not in composts. More than 75% ARG subtypes were shared between plasmids and chromosomes in our samples. Transposases could play a pivotal role in mediating the transfer of ARGs between different phyla in animal manure and composting. Cross-sample mapping to contigs carrying ARGs showed that the hosts of common resistome in manure had preference on animal species, and the dominant genus of ARG host shifted from Enterococcus in manure to Pseudomonas in composts. The broad host range and linking with diverse mobile genetic elements (MGEs) were two key factors for ARGs, such as sul1 and aadA, which could survive during composting. The multidrug resistance genes represented the dominant ARGs in pathogenic antibiotic-resistant bacteria in manure but could be effectively controlled by composting. CONCLUSIONS Our experiments revealed the common resistome in animal manure, classified and relative quantified the ARG hosts, and assessed the mobility of ARGs. Composting can mitigate ARGs in animal manure by altering the bacterial hosts; however, persistent ARGs can escape from the removal because of diverse host range and MGEs. Our findings provide an overall background for source tracking, risk assessment, and control of livestock ARGs.
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Affiliation(s)
- Tianlei Qiu
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Linhe Huo
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Yajie Guo
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Min Gao
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Guoliang Wang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Dong Hu
- Institute of Agro-Resources and Environment, Hebei Fertilizer Technology Innovation Center, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Cheng Li
- Institute of Quality Standard and Testing, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China
| | - Zhanwu Wang
- Institute of Agro-Resources and Environment, Hebei Fertilizer Technology Innovation Center, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Guiming Liu
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China.
| | - Xuming Wang
- Beijing Key Laboratory of Agricultural Genetic Resources and Biotechnology, Institute of Biotechnology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, People's Republic of China.
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Lawther K, Santos FG, Oyama LB, Rubino F, Morrison S, Creevey CJ, McGrath JW, Huws SA. Resistome Analysis of Global Livestock and Soil Microbiomes. Front Microbiol 2022; 13:897905. [PMID: 35875563 PMCID: PMC9300982 DOI: 10.3389/fmicb.2022.897905] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/24/2022] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial resistance (AMR) is a serious threat to public health globally; it is estimated that AMR bacteria caused 1.27 million deaths in 2019, and this is set to rise to 10 million deaths annually. Agricultural and soil environments act as antimicrobial resistance gene (ARG) reservoirs, operating as a link between different ecosystems and enabling the mixing and dissemination of resistance genes. Due to the close interactions between humans and agricultural environments, these AMR gene reservoirs are a major risk to both human and animal health. In this study, we aimed to identify the resistance gene reservoirs present in four microbiomes: poultry, ruminant, swine gastrointestinal (GI) tracts coupled with those from soil. This large study brings together every poultry, swine, ruminant, and soil shotgun metagenomic sequence available on the NCBI sequence read archive for the first time. We use the ResFinder database to identify acquired antimicrobial resistance genes in over 5,800 metagenomes. ARGs were diverse and widespread within the metagenomes, with 235, 101, 167, and 182 different resistance genes identified in the poultry, ruminant, swine, and soil microbiomes, respectively. The tetracycline resistance genes were the most widespread in the livestock GI microbiomes, including tet(W)_1, tet(Q)_1, tet(O)_1, and tet(44)_1. The tet(W)_1 resistance gene was found in 99% of livestock GI tract microbiomes, while tet(Q)_1 was identified in 93%, tet(O)_1 in 82%, and finally tet(44)_1 in 69%. Metatranscriptomic analysis confirmed these genes were “real” and expressed in one or more of the livestock GI tract microbiomes, with tet(40)_1 and tet(O)_1 expressed in all three livestock microbiomes. In soil, the most abundant ARG was the oleandomycin resistance gene, ole(B)_1. A total of 55 resistance genes were shared by the four microbiomes, with 11 ARGs actively expressed in two or more microbiomes. By using all available metagenomes we were able to mine a large number of samples and describe resistomes in 37 countries. This study provides a global insight into the diverse and abundant antimicrobial resistance gene reservoirs present in both livestock and soil microbiomes.
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Affiliation(s)
- Katie Lawther
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
| | - Fernanda Godoy Santos
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
| | - Linda Boniface Oyama
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
| | - Francesco Rubino
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
| | - Steven Morrison
- Agri-Food and Biosciences Institute, Belfast, United Kingdom
| | - Chris J. Creevey
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
| | - John W. McGrath
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
| | - Sharon Ann Huws
- School of Biological Sciences, Institute for Global Food Security, Queen’s University Belfast, Belfast, United Kingdom
- *Correspondence: Sharon Ann Huws,
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Liu R, Xu H, Guo X, Liu S, Qiao J, Ge H, Zheng B, Gou J. Genomic Characterization of Two Escherichia fergusonii Isolates Harboring mcr-1 Gene From Farm Environment. Front Cell Infect Microbiol 2022; 12:774494. [PMID: 35719362 PMCID: PMC9204285 DOI: 10.3389/fcimb.2022.774494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 04/26/2022] [Indexed: 11/30/2022] Open
Abstract
The prevalence and transmission of mobile colistin resistance (mcr) genes have led to a severe threat to humans and animals. Escherichia fergusonii is an emerging pathogen which is closely related to a variety of diseases. However, the report of mcr genes harboring E. fergusonii is still rare. One study in Brazil reported the E. fergusonii isolates with IncHI2-type plasmids harboring mcr-1. A Chinese study reported two strains carrying mcr-1 gene with the same plasmid type IncI2. Here, we identified two strains of E. fergusonii carrying mcr-1 gene from farm environments with IncX4-type and IncI2-type plasmids, respectively. To our best knowledge, this is the first report about mcr-1 gene located on IncX4-type plasmid in E. fergusonii. We investigate the resistance mechanism of colistin-resistant Escherichia fergusonii strains 6S41-1 and 5ZF15-2-1 and elucidate the genetic context of plasmids carrying mcr-1 genes. In addition, we also investigated chromosomal mutations mediated colistin resistance in these two strains. Species identification was performed using MALDI-TOF MS and 16S rRNA gene sequencing. The detection of mcr-1 gene was determined by PCR and Sanger sequencing. S1-pulsed-field gel electrophoresis (PFGE), Southern blotting, antimicrobial susceptibility testing, conjugation experiments, complete genome sequencing, and core genome analysis were conducted to investigate the characteristics of isolates harboring mcr-1. The mcr-1 genes on two strains were both plasmids encoded and the typical IS26-parA-mcr-1-pap2 cassette was identified in p6S41-1 while a nikA-nikB-mcr-1 locus sites on the conjugative plasmid p5ZF15-2-1. In addition, Core genome analysis reveals that E. fergusonii 6S41-1 and 5ZF15-2-1 have close genetic relationships. The mcr-1 gene is located on conjugative IncI2-type plasmid p5ZF15-2-1, which provides support for its further transmission. In addition, there’s the possibility of mcr-1 spreading to humans through farm environments and thereby threatening public health. Therefore, continuous monitoring and investigations of mcr-1 among Enterobacteriaceae in farm environments are necessary to control the spread.
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Affiliation(s)
- Ruishan Liu
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Hao Xu
- 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
| | - Shuxiu Liu
- Department of Laboratory Medicine, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jie Qiao
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Haoyu Ge
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Beiwen Zheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Jianjun Gou
- Department of Laboratory Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Prevalence and Molecular Characterisation of Extended-Spectrum Beta-Lactamase-Producing Shiga Toxin-Producing Escherichia coli, from Cattle Farm to Aquatic Environments. Pathogens 2022; 11:pathogens11060674. [PMID: 35745529 PMCID: PMC9230396 DOI: 10.3390/pathogens11060674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 01/23/2023] Open
Abstract
Extended-spectrum beta-lactamase (ESBL)-producing bacteria are a major problem for public health worldwide because of limited treatment options. Currently, only limited information is available on ESBL-producing Shiga toxin-producing Escherichia coli (STEC) in cattle farms and the surrounding aquatic environment. This study sought to track and characterise ESBL-producing STEC disseminating from a cattle farm into the water environment. Animal husbandry soil (HS), animal manure (AM), animal drinking water (ADW), and nearby river water (NRW) samples were collected from the cattle farm. Presumptive ESBL-producing STEC were isolated and identified using chromogenic media and mass spectrophotometry methods (MALDI-TOF-MS), respectively. The isolates were subjected to molecular analysis, and all confirmed ESBL-producing STEC isolates were serotyped for their O serogroups and assessed for antibiotic resistance genes (ARGs) and for the presence of selected virulence factors (VFs). A phylogenetic tree based on the multilocus sequences was constructed to determine the relatedness among isolates of ESBL-producing STEC. The highest prevalence of ESBL-producing STEC of 83.33% was observed in HS, followed by ADW with 75%, NRW with 68.75%, and the lowest was observed in AM with 64.58%. Out of 40 randomly selected isolates, 88% (n = 35) belonged to the serogroup O45 and 13% (n = 5) to the serogroup O145. The multilocus sequence typing (MLST) analysis revealed four different sequence types (STs), namely ST10, ST23, ST165, and ST117, and the predominant ST was found to be ST10. All 40 isolates carried sul1 (100%), while blaOXA, blaCTX-M, sul2, blaTEM, and qnrS genes were found in 98%, 93%, 90%, 83%, and 23% of the 40 isolates, respectively. For VFs, only stx2 was detected in ESBL-producing STEC isolates. The results of the present study indicated that a cattle environment is a potential reservoir of ESBL-producing STEC, which may disseminate into the aquatic environment through agricultural runoff, thus polluting water sources. Therefore, continual surveillance of ESBL-producing STEC non-O157 would be beneficial for controlling and preventing STEC-related illnesses originating from livestock environments.
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Chen C, Xu H, Liu R, Hu X, Han J, Wu L, Fu H, Zheng B, Xiao Y. Emergence of Neonatal Sepsis Caused by MCR-9- and NDM-1-Co-Producing Enterobacter hormaechei in China. Front Cell Infect Microbiol 2022; 12:879409. [PMID: 35601097 PMCID: PMC9120612 DOI: 10.3389/fcimb.2022.879409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/05/2022] [Indexed: 01/01/2023] Open
Abstract
Mobile colistin resistance (mcr) genes represent an emerging threat to public health. Reports on the prevalence, antimicrobial profiles, and clonality of MCR-9-producing Enterobacter cloacae complex (ECC) isolates on a national scale in China are limited. We screened 3,373 samples from humans, animals, and the environment and identified eleven MCR-9-positive ECC isolates. We further investigated their susceptibility, epidemiology, plasmid profiles, genetic features, and virulence potential. Ten strains were isolated from severe bloodstream infection cases, especially three of them were recovered from neonatal sepsis. Enterobacter hormaechei was the most predominant species among the MCR-9-producing ECC population. Moreover, the co-existence of MCR-9, CTX-M, and SHV-12 encoding genes in MCR-9-positive isolates was globally observed. Notably, mcr-9 was mainly carried by IncHI2 plasmids, and we found a novel ~187 kb IncFII plasmid harboring mcr-9, with low similarity with known plasmids. In summary, our study presented genomic insights into genetic characteristics of MCR-9-producing ECC isolates retrieved from human, animal, and environment samples with one health perspective. This study is the first to reveal NDM-1- and MCR-9-co-producing ECC from neonatal sepsis in China. Our data highlights the risk for the hidden spread of the mcr-9 colistin resistance gene.
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Affiliation(s)
- Chunlei Chen
- 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
| | - 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
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, 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
- 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
| | - Jianfeng Han
- Sansure Biotech Inc. Medical Affairs Department, National Joint Local Engineering Research Center for Genetic Diagnosis of Infection Diseases and Tumors, Beijing, China
| | - Lingjiao Wu
- 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
| | - Hao Fu
- 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
| | - 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
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
- Research Units of Infectious Diseases and Microecology, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Beiwen Zheng, ; Yonghong Xiao,
| | - Yonghong Xiao
- 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
- Jinan Microecological Biomedicine Shandong Laboratory, Jinan, China
- Research Units of Infectious Diseases and Microecology, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Beiwen Zheng, ; Yonghong Xiao,
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12
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Abbassi MS, Badi S, Lengliz S, Mansouri R, Hammami S, Hynds P. Hiding in plain sight - Wildlife as a neglected reservoir and pathway for the spread of antimicrobial resistance: A narrative review. FEMS Microbiol Ecol 2022; 98:6568898. [DOI: 10.1093/femsec/fiac045] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 03/01/2022] [Accepted: 04/12/2022] [Indexed: 11/14/2022] Open
Abstract
ABSTRACT
Antimicrobial resistance represents a global health problem, with infections due to pathogenic antimicrobial resistant bacteria (ARB) predicted to be the most frequent cause of human mortality by 2050. The phenomenon of antimicrobial resistance has spread to and across all ecological niches, and particularly in livestock used for food production with antimicrobials consumed in high volumes. Similarly, hospitals and other healthcare facilities are recognized as significant “hotspots” of ARB and antimicrobial resistance genes (ARGs); however, over the past decade, new and previously overlooked ecological niches are emerging as hidden reservoirs of ARB/ARGs. Increasingly extensive and intensive industrial activities, degradation of natural environments, burgeoning food requirements, urbanization, and global climatic change have all dramatically affected the evolution and proliferation of ARB/ARGs, which now stand at extremely concerning ecological levels. While antimicrobial resistant bacteria and genes as they originate and emanate from livestock and human hosts have been extensively studied over the past 30 years, numerous ecological niches have received considerably less attention. In the current descriptive review, the authors have sought to highlight the importance of wildlife as sources/reservoirs, pathways and receptors of ARB/ARGs in the environment, thus paving the way for future primary research in these areas.
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Affiliation(s)
- Mohamed Salah Abbassi
- Université de Tunis El Manar, Institut de la recherche vétérinaire de Tunisie, Tunis, Tunisia
- Université de Tunis El Manar, Faculté de Médecine de Tunis, LR99ES09 Laboratoire de recherche «Résistance aux antimicrobiens» 1007, Tunis, Tunisia
| | - Souhir Badi
- Université de Tunis El Manar, Institut de la recherche vétérinaire de Tunisie, Tunis, Tunisia
| | - Sana Lengliz
- Université de Tunis El Manar, Institut de la recherche vétérinaire de Tunisie, Tunis, Tunisia
| | - Riadh Mansouri
- Université de Tunis El Manar, Institut de la recherche vétérinaire de Tunisie, Tunis, Tunisia
| | - Salah Hammami
- Université Manouba, IRESA, École Nationale de Médecine Vétérinaire de Sidi Thabet, Sidi Thabet 2020, Ariana, Tunisia
| | - Paul Hynds
- Environmental Sustainability and Health Institute (ESHI), Technological University Dublin, Grangegorman, Dublin 7, Dublin, Republic of Ireland
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Furlan JPR, Dos Santos LDR, Ramos MS, Gallo IFL, Moretto JAS, Stehling EG. Occurrence of clinically relevant antimicrobial resistance genes, including mcr-3 and mcr-7.1, in soil and water from a recreation club. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:819-828. [PMID: 32735122 DOI: 10.1080/09603123.2020.1799953] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
We researched clinically relevant antimicrobial resistance genes (ARGs) and mobile genetic elements (MGEs) in environmental samples from a recreation club in Brazil. A total of 172 amplicons (105 from soil and 67 from water) of 26 ARGs (20 among the soil and water samples; four only in soil samples; two only in water samples) were detected. Nine MGEs were detected, including plasmids and class 1 integron. The absolute abundance of the mcr-3 gene ranged from 1.12 × 102 to 1.81 × 103 copies/mL-1 in water samples. The rapid spread of mcr-like genes in several sources has generated a huge concern to public health. Accordingly, understanding of antimicrobial resistance, carry out surveillance studies may contribute to tackle antimicrobial resistance. As the environmental samples were collected from a popular recreation club in Brazil, this study points out to the risk and exposure to clinically relevant ARGs, especially to mcr-3 and mcr-7.1 genes.
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Affiliation(s)
- João Pedro Rueda Furlan
- Departamento De Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade De Ciências Farmacêuticas De Ribeirão Preto, Universidade De São Paulo (USP), Ribeirão Preto, Brasil
| | - Lucas David Rodrigues Dos Santos
- Departamento De Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade De Ciências Farmacêuticas De Ribeirão Preto, Universidade De São Paulo (USP), Ribeirão Preto, Brasil
| | - Micaela Santana Ramos
- Departamento De Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade De Ciências Farmacêuticas De Ribeirão Preto, Universidade De São Paulo (USP), Ribeirão Preto, Brasil
| | - Inara Fernanda Lage Gallo
- Departamento De Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade De Ciências Farmacêuticas De Ribeirão Preto, Universidade De São Paulo (USP), Ribeirão Preto, Brasil
| | - Jéssica Aparecida Silva Moretto
- Departamento De Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade De Ciências Farmacêuticas De Ribeirão Preto, Universidade De São Paulo (USP), Ribeirão Preto, Brasil
| | - Eliana Guedes Stehling
- Departamento De Análises Clínicas, Toxicológicas E Bromatológicas, Faculdade De Ciências Farmacêuticas De Ribeirão Preto, Universidade De São Paulo (USP), Ribeirão Preto, Brasil
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14
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First Report of Extended-Spectrum β-Lactamase ( blaCTX-M1) and Colistin Resistance Gene mcr-1 in E. coli of Lineage ST648 from Cockroaches in Tunisia. Microbiol Spectr 2022; 10:e0003621. [PMID: 35230131 PMCID: PMC9045256 DOI: 10.1128/spectrum.00036-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
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 blaCTX-M-15 genes were detected; two among them were associated with blaTEM-117 and blaTEM-128, and seven blaCTX-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 blaESBL, 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 blaESBL, 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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Wang X, Sun N, Liu X, Li F, Sun J, Huang J, Li R, Wang L. Small clone dissemination of tmexCD1-toprJ1-carrying Klebsiella pneumoniae isolates in a chicken farm. J Glob Antimicrob Resist 2022; 29:105-112. [DOI: 10.1016/j.jgar.2022.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 02/16/2022] [Accepted: 02/21/2022] [Indexed: 10/19/2022] Open
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16
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Cave R, Cole J, Mkrtchyan HV. Surveillance and prevalence of antimicrobial resistant bacteria from public settings within urban built environments: Challenges and opportunities for hygiene and infection control. ENVIRONMENT INTERNATIONAL 2021; 157:106836. [PMID: 34479136 PMCID: PMC8443212 DOI: 10.1016/j.envint.2021.106836] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/12/2021] [Accepted: 08/15/2021] [Indexed: 05/09/2023]
Abstract
Antimicrobial resistant (AMR) bacteria present one of the biggest threats to public health; this must not be forgotten while global attention is focussed on the COVID-19 pandemic. Resistant bacteria have been demonstrated to be transmittable to humans in many different environments, including public settings in urban built environments where high-density human activity can be found, including public transport, sports arenas and schools. However, in comparison to healthcare settings and agriculture, there is very little surveillance of AMR in the built environment outside of healthcare settings and wastewater. In this review, we analyse the existing literature to aid our understanding of what surveillance has been conducted within different public settings and identify what this tells us about the prevalence of AMR. We highlight the challenges that have been reported; and make recommendations for future studies that will help to fill knowledge gaps present in the literature.
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Affiliation(s)
- Rory Cave
- School of Biomedical Sciences, University of West London, United Kingdom
| | - Jennifer Cole
- Royal Holloway University of London, Department of Health Studies, United Kingdom
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Benlabidi S, Raddaoui A, Achour W, Hassen B, Torres C, Abbassi MS, Ghrairi T. Genetic characterization of ESBL/pAmpC-producing Escherichia coli isolated from forest, urban park and cereal culture soils. FEMS Microbiol Ecol 2021; 97:6425737. [PMID: 34788430 DOI: 10.1093/femsec/fiab146] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Accepted: 11/09/2021] [Indexed: 01/26/2023] Open
Abstract
Little is known about the role of forestland and non-fertilized agriculture soils as reservoirs of extended-spectrum beta-lactamase (ESBL) and plasmid-borne AmpC (pAmpC)-producing Escherichia coli isolates. Thus, in the present study, 210 soil samples from various origins (forest of Oued Zen (Ain Drahem), non-agriculture soils from different park gardens in Tunis City, cereal culture soils and home gardens) were investigated to characterize cefotaxime-resistant E. coli isolates. A total of 22 ESBL/pAmpC-producing E. coli were collected, and all harbored variants of the blaCTX-M gene (15 blaCTX-M-1, 5 blaCTX-M-55 and 2 blaCTX-M-15). A total of seven and two isolates harbored also blaEBC and blaDHA-like genes, respectively. Resistances to tetracycline, sulfonamides and fluoroquinolones were encoded by tetA (n = 4)/tetB (n = 12), sul1 (n = 17)/sul2 (n = 19) and aac(6')-Ib-cr (n = 2)/qnrA (n = 1)/qnrS (n = 1) genes, respectively. A total of seven isolates were able to transfer by conjugation cefotaxime-resistance in association or not with other resistance markers. PFGE showed that ten and two isolates were clonally related (pulsotypes P1 and P2). The 10 P1 isolates had been collected from forestland, cereal culture soils and an urban park garden in Tunis City, arguing for a large spread of clonal strains. Our findings highlight the occurrence of ESBL/pAmpC-E. coli isolates in soils under limited anthropogenic activities and the predominance of CTX-M enzymes that are largely disseminated in E. coli from humans and animals in Tunisia.
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Affiliation(s)
- Saloua Benlabidi
- Tunisian Institute of Veterinary Research, University of Tunis El Manar, 20 Street Jebel Lakhdhar, Bab Saadoun, 1006 Tunis, Tunisia
| | - Anis Raddaoui
- Faculty of Medicine of Tunis, Laboratory Ward, National Bone Marrow Transplant Center, University of Tunis El Manar, LR18ES39, 1006 Tunis, Tunisia
| | - Wafa Achour
- Faculty of Medicine of Tunis, Laboratory Ward, National Bone Marrow Transplant Center, University of Tunis El Manar, LR18ES39, 1006 Tunis, Tunisia
| | - Bilel Hassen
- Tunisian Institute of Veterinary Research, University of Tunis El Manar, 20 Street Jebel Lakhdhar, Bab Saadoun, 1006 Tunis, Tunisia
| | - Carmen Torres
- Departamento de Agricultura y Alimentación, Universidad de La Rioja, 26006 Logroño, Spain
| | - Mohamed Salah Abbassi
- Tunisian Institute of Veterinary Research, University of Tunis El Manar, 20 Street Jebel Lakhdhar, Bab Saadoun, 1006 Tunis, Tunisia.,Faculty of Medicine of Tunis, Laboratory of Antibiotic Resistance LR99ES09, University of Tunis El Manar, 1006 Tunis, Tunisia
| | - Taoufik Ghrairi
- Faculty of Sciences of Tunis, Laboratory of Neurophysiology Cellular Physiopathology and Biomolecule Valorisation, University Tunis El Manar, LR18ES03, Tunis, Tunisia
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Furlan JPR, Stehling EG. Multiple sequence types, virulence determinants and antimicrobial resistance genes in multidrug- and colistin-resistant Escherichia coli from agricultural and non-agricultural soils. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117804. [PMID: 34329068 DOI: 10.1016/j.envpol.2021.117804] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/12/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
In soils, the presence of clinically relevant bacteria carrying ARGs, including extended-spectrum β-lactamase- and plasmid-mediated AmpC β-lactamase-encoding genes, is an underestimated public health problem that requires more attention. For this investigation, 300 samples from agricultural and non-agricultural soils were used to obtain 41 MDR E. coli isolates, standing out the resistance to β-lactams, fluoroquinolones and colistin. Virulence genes related to diarrheagenic E. coli and extraintestinal pathogenic E. coli were detected. Several ARGs were found, highlighting the presence of at least one β-lactamase-encoding gene (blaTEM, blaCMY, blaSHV, blaOXA-1-like, blaCTX-M-2, and/or blaCTX-M-15) in each isolate. Among the fluoroquinolone-resistant E. coli isolates, the plasmid-mediated quinolone resistance genes (qnrB and oqxA) and substitutions in the quinolone resistance-determining regions were detected. Some isolates were resistant to colistin (MICs of 4-8 mg/L) and, although no mcr-like gene was detected, substitutions in the two-component systems involving PhoP/PhoQ and PmrA/PmrB were found. Furthermore, the E. coli isolates presented plasmids and class 1 integrons, the last one detected in all isolates. The ARGs blaTEM, aadA and dfrA and the lpfA virulence-associated gene presented statistically significant differences (P < 0.05) in agricultural soils, while the blaOXA-1-like gene presented a statistically significant difference in non-agricultural soils. Thirty-eight sequence types (STs) were identified among the isolates, spotlighting the 20 different STs that carried blaCMY and blaCTX-M-type genes and those commonly reported in infections worldwide. The occurrence of virulent, multidrug- and colistin-resistant E. coli isolates in soils could lead to contamination of surrounding environments and food, increasing the risk of human and animal exposure. Therefore, this study contributes to a better understanding of E. coli in soils and reinforces the importance of the One Health approach to antimicrobial resistance surveillance.
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Affiliation(s)
- João Pedro Rueda Furlan
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Eliana Guedes Stehling
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Qin J, Zhao Y, Wang A, Chi X, Wen P, Li S, Wu L, Bi S, Xu H. Comparative genomic characterization of multidrug-resistant Citrobacter spp. strains in Fennec fox imported to China. Gut Pathog 2021; 13:59. [PMID: 34645508 PMCID: PMC8513245 DOI: 10.1186/s13099-021-00458-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 10/06/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND To investigate the antimicrobial profiles and genomic characteristics of MDR-Citrobacter spp. strains isolated from Fennec fox imported from Sudan to China. METHODS Four Citrobacter spp. strains were isolated from stool samples. Individual fresh stool samples were collected and subsequently diluted in phosphate buffered saline as described previously. The diluted fecal samples were plated on MacConkey agar supplemented with 1 mg/l cefotaxime and incubated for 20 h at 37 °C. Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF-MS) was used for identification. Antimicrobial susceptibility testing was performed using the broth microdilution method. Whole-genome sequencing was performed on an Illumina Novaseq-6000 platform. Acquired antimicrobial resistance genes and plasmid replicons were detected using ResFinder 4.1 and PlasmidFinder 1.3, respectively. Comparative genomic analysis of 277 Citrobacter genomes was also performed. RESULTS Isolate FF141 was identified as Citrobacter cronae while isolate FF371, isolate FF414, and isolate FF423 were identified as Citrobacter braakii. Of these, three C. braakii isolates were further confirmed to be extended-spectrum β-lactamases (ESBL)-producer. All isolates are all multidrug resistance (MDR) with resistance to multiple antimicrobials. Plasmid of pKPC-CAV1321 belong to incompatibility (Inc) group. Comparative genomics analysis of Citrobacter isolates generated a large core-genome. Genetic diversity was observed in our bacterial collection, which clustered into five main clades. Human, environmental and animal Citrobacter isolates were distributed into five clusters. CONCLUSIONS To our knowledge, this is the first investigation of MDR-Citrobacter from Fennec Fox. Our phenotypic and genomic data further underscore the threat of increased ESBL prevalence in wildlife and emphasize that increased effort should be committed to monitoring the potentially rapid dissemination of ESBL-producers with one health perspective.
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Affiliation(s)
- Jie Qin
- Emergency Department of Taizhou Hospital, Taizhou, China
| | - Yishu Zhao
- Department of Rheumatology and Immunology, Shandong Provincial Hospital, Jinan, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Aifang Wang
- Department of Laboratory Medicine, Zhucheng People's Hospital, Zhucheng, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiaohui Chi
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Peipei Wen
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Shuang Li
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lingjiao Wu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Sheng Bi
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 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, School of Medicine, Zhejiang University, Hangzhou, China.
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20
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Huang S, Wang S, Li Y, Fang M, Kou Z, Chen B, Xu L, Bi Z, Xu H, Chi X, Bi Z. Prevalence and transmission of mobilized colistin resistance (mcr-1) gene positive Escherichia coli in healthy rural residents in Shandong province, China. Microbiol Res 2021; 253:126881. [PMID: 34592562 DOI: 10.1016/j.micres.2021.126881] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/06/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
This study was conducted to explore the prevalence and transmission of mcr-1 Escherichia coli among healthy rural residents in Shandong, China, and to provide theoretical basis for the prevention and control of spread and treatment of multi-drug resistant Escherichia coli. A total of 218 healthy residents from 3 villages in Guan County, Shandong Province, China were included in this study, and their fecal samples were collected. Colistin-resistant Escherichia coli were selected, and their drug sensitivity and plasmids' transferability were measured. After analysis, some conclusions can be drawn. The colistin-resistant Escherichia coli, most strains of which are MDROs, is common and highly transmissible in healthy residents in rural areas in China. Interventions should be implemented to prevent the spread of colistin-resistant Escherichia coli through health education and tighter regulation of antibiotics.
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Affiliation(s)
- Shumei Huang
- School of Public Health, Shandong University, Jinan, 250012, China
| | - Shuang Wang
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Yan Li
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Ming Fang
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Zengqiang Kou
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Baoli Chen
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Liuchen Xu
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China
| | - Zhenwang Bi
- The Affiliated Shandong Provincial Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250062, China
| | - Hao Xu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital of Medical School of Zhejiang University, Hang Zhou, 310003, China
| | - Xiaohui Chi
- Department of Public Health of Zhejiang University, Hang Zhou, 310058, China
| | - Zhenqiang Bi
- Bacterial Infection Disease Control of Institute, Shandong Center for Disease Control and Prevention, Jinan, 250014, China.
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21
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Liang G, Rao Y, Wang S, Chi X, Xu H, Shen Y. Co-Occurrence of NDM-9 and MCR-1 in a Human Gut Colonized Escherichia coli ST1011. Infect Drug Resist 2021; 14:3011-3017. [PMID: 34413655 PMCID: PMC8370297 DOI: 10.2147/idr.s321732] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 07/31/2021] [Indexed: 01/08/2023] Open
Abstract
Background The emergence of the plasmid-borne colistin-resistant gene (mcr-1) poses a great threat to human health. What is worse, the recent observations of the coexistence of mcr-1 with carbapenemase encoding genes in some bacteria caused even more concern. Yet, there is a lack of observations of such strains in the human gut. Methods The isolation of E. coli L889 was performed on selective medium plates. Antibiotic susceptibilities were determined by an agar dilution and a broth microdilution method. Multi-locus sequence typing (MLST) and acquired resistance genes were also characterized. Transferability of bla NDM-9/mcr-1-carrying plasmids was determined by conjugation, replicon typing and S1-Pulsed-field gel electrophoresis (S1-PFGE), and Southern blotting. The sequences of these plasmids were analyzed by using whole-genome sequencing with Illumina Novaseq and Nanopore platforms. Results E. coli L889 was identified as ST1101 concomitantly carrying bla NDM-9 and mcr-1 from a stool sample. Antimicrobial susceptibility tests showed that it was resistant to various antimicrobial agents and only susceptible to tigecycline. Notably, bla NDM-9 was located on a ~114-kb untypable plasmid, while mcr-1 was located on a ~63-kb IncI2 plasmid. Conclusion Our research, to our knowledge, first reported an ST1101 E. coli strain with an untypeable bla NDM-9-harbouring plasmid and an IncI2 mcr-1-carrying plasmid. The colonized E. coli strains potentially contribute to the dissemination and transfer of bla NDM-9 and mcr-1 to clinical isolates, which is a considerable threat to public health and should be closely monitored.
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Affiliation(s)
- Ganfeng Liang
- Department of Infectious Diseases, The First Hospital of Taizhou, Taizhou, People's Republic of China
| | - Yuting Rao
- 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, People's Republic of China.,Department of Laboratory Medicine, Puyang Oil Field General Hospital, Puyang, People's Republic of China
| | - Shuang Wang
- Institute of Bacterial Infection Disease Control, Shandong Centre for Disease Control and Prevention, Jinan, People's Republic of China
| | - Xiaohui Chi
- 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, People's Republic of 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, People's Republic of China
| | - Yang Shen
- Department of Infectious Diseases, The First Hospital of Taizhou, Taizhou, People's Republic of China
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22
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Chen Z, Shen M, Mao C, Wang C, Yuan P, Wang T, Sun D. A Type I Restriction Modification System Influences Genomic Evolution Driven by Horizontal Gene Transfer in Paenibacillus polymyxa. Front Microbiol 2021; 12:709571. [PMID: 34413842 PMCID: PMC8370563 DOI: 10.3389/fmicb.2021.709571] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 06/29/2021] [Indexed: 11/13/2022] Open
Abstract
Considered a “Generally Recognized As Safe” (GRAS) bacterium, the plant growth–promoting rhizobacterium Paenibacillus polymyxa has been widely applied in agriculture and animal husbandry. It also produces valuable compounds that are used in medicine and industry. Our previous work showed the presence of restriction modification (RM) system in P. polymyxa ATCC 842. Here, we further analyzed its genome and methylome by using SMRT sequencing, which revealed the presence of a larger number of genes, as well as a plasmid documented as a genomic region in a previous report. A number of mobile genetic elements (MGEs), including 78 insertion sequences, six genomic islands, and six prophages, were identified in the genome. A putative lysozyme-encoding gene from prophage P6 was shown to express lysin which caused cell lysis. Analysis of the methylome and genome uncovered a pair of reverse-complementary DNA methylation motifs which were widespread in the genome, as well as genes potentially encoding their cognate type I restriction-modification system PpoAI. Further genetic analysis confirmed the function of PpoAI as a RM system in modifying and restricting DNA. The average frequency of the DNA methylation motifs in MGEs was lower than that in the genome, implicating a role of PpoAI in restricting MGEs during genomic evolution of P. polymyxa. Finally, comparative analysis of R, M, and S subunits of PpoAI showed that homologs of the PpoAI system were widely distributed in species belonging to other classes of Firmicute, implicating a role of the ancestor of PpoAI in the genomic evolution of species beyond Paenibacillus.
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Affiliation(s)
- Ziyan Chen
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Minjia Shen
- UMR 9198 Institut de Biologie Intégrative de la Cellule (I2BC), Gif-sur-Yvette, France
| | - Chengyao Mao
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Chenyu Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Panhong Yuan
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics, Hangzhou, China
| | - Dongchang Sun
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
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23
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Huang C, Shi Q, Zhang S, Wu H, Xiao Y. Acquisition of the mcr-1 Gene Lowers the Target Mutation to Impede the Evolution of a High-Level Colistin-Resistant Mutant in Escherichia coli. Infect Drug Resist 2021; 14:3041-3051. [PMID: 34408448 PMCID: PMC8364431 DOI: 10.2147/idr.s324303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 08/03/2021] [Indexed: 11/23/2022] Open
Abstract
Objective The spread of the plasmid-mediated colistin resistance gene mcr-1 poses a significant public health threat. Little information is available on the development of high-level colistin-resistant mutants (HLCRMs) in MCR-1-producing Escherichia coli (MCRPEC). The present study was designed to evaluate the impact of chromosomal modifications in pmrAB, phoPQ, and mgrB combined with mcr-1 on colistin resistance in E. coli. Methods Five MCRPEC and three non-MCRPEC (E. coli ATCC25922 and two plasmid-curing) strains were used. The HLCRMs were selected through multi-stepwise colistin exposure. Moreover, two E. coli C600-pMCRs were constructed and used for selection of HLCRMs. Further analysis included mutation rates and DNA sequencing. Transcripts of pmrABC, phoP, mgrB, and mcr-1 were quantified by real-time quantitative PCR. Results All tested HLCRMs were successfully isolated from their parental strains. Non-MCRPEC strains had higher minimum inhibitory concentrations (MICs) and mutation rates than MCRPEC strains. Nineteen amino acid substitutions were identified: seven in PmrA, six in PmrB, one in PhoP, three in PhoQ, and two in MgrB. Most were detected in non-MCRPEC strains. Sorting Intolerant From Tolerant predicted that four substitutions, PmrA Gly15Arg, Gly53Arg, PmrB Pro94Gln, and PhoP Asp86Gly, affected protein function. Two HLCRM isolates did not show amino acid substitutions in contrast to their parental MCRPEC isolates. No further mutations were detected in the second- and third-step mutants. Further transcriptional analysis showed that the up-regulation of pmrCAB expression was greater in the mutant of E. coli C600 than in E. coli C600-pMCR. Conclusion Acquisition of the mcr-1 gene had a negative impact on the development of HLCRMs in E. coli, but was associated with low-level colistin resistance. Thus, colistin-based combination regimens may be effective against infections with MCR-1-producing isolates.
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Affiliation(s)
- Chen Huang
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Hospital, Ningbo, People's Republic of China.,State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Qingyi Shi
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Shuntian Zhang
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People's Republic of China
| | - Hongcheng Wu
- Department of Respiratory Medicine, Ningbo Medical Center Lihuili Hospital, Ningbo, People's Republic of China
| | - Yonghong Xiao
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People's Republic of China
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24
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Lopes R, Furlan JPR, Dos Santos LDR, Gallo IFL, Stehling EG. Colistin-Resistant mcr-1-Positive Escherichia coli ST131- H22 Carrying bla CTX-M-15 and qnrB19 in Agricultural Soil. Front Microbiol 2021; 12:659900. [PMID: 33897674 PMCID: PMC8062734 DOI: 10.3389/fmicb.2021.659900] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/15/2021] [Indexed: 01/02/2023] Open
Abstract
The pandemic Escherichia coli sequence type 131 (ST131) carrying plasmid-mediated colistin resistance mcr genes has emerged worldwide causing extraintestinal infections, with lineages belonging to three major clades (A, B, and C). Clade B is the most prevalent in animals, contaminating associated meat products, and can be transmitted zoonotically. However, the blaCTX–M–15 gene has only been associated with C2 subclade so far. In this study, we performed a genomic investigation of an E. coli (strain S802) isolated from a kale crop in Brazil, which exhibited a multidrug-resistant (MDR) profile to clinically significant antimicrobials (i.e., polymyxin, broad-spectrum cephalosporins, aminoglycosides, and fluoroquinolones). Whole-genome sequencing analysis revealed that the S802 strain belonged to serotype O25:H4, ST131/CC131, phylogenetic group B2, and virotype D5. Furthermore, S802 carried the clade B-associated fimH22 allele, genes encoding resistance to clinically important antimicrobials, metals, and biocides, and was phylogenetically related to human, avian, and swine ST131-H22 strains. Additionally, IncHI2-IncQ1, IncF [F2:A-:B1], and ColE1-like plasmids were identified harboring mcr-1.1, blaCTX–M–15, and qnrB19, respectively. The emergence of the E. coli ST131-H22 sublineage carrying mcr-1.1, blaCTX–M–15, and qnrB19 in agricultural soil represents a threat to food and environmental safety. Therefore, a One Health approach to genomic surveillance studies is required to effectively detect and limit the spread of antimicrobial-resistant bacteria and their resistance genes.
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Affiliation(s)
- Ralf Lopes
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - João Pedro Rueda Furlan
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Lucas David Rodrigues Dos Santos
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Inara Fernanda Lage Gallo
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Eliana Guedes Stehling
- Department of Clinical Analyses, Toxicology and Food Science, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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25
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Siller P, Daehre K, Rosen K, Münch S, Bartel A, Funk R, Nübel U, Amon T, Roesler U. Low airborne tenacity and spread of ESBL-/AmpC-producing Escherichia coli from fertilized soil by wind erosion. Environ Microbiol 2021; 23:7497-7511. [PMID: 33655697 DOI: 10.1111/1462-2920.15437] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 02/12/2021] [Indexed: 01/18/2023]
Abstract
ESBL-/AmpC-producing Escherichia coli from organic fertilizers were previously detected on soil surfaces of arable land and might be emitted by wind erosion. To investigate this potential environmental transmission path, we exposed ESBL-/AmpC-positive chicken litter, incorporated in agricultural soils, to different wind velocities in a wind tunnel and took air samples for microbiological analysis. No data exist concerning the airborne tenacity of ESBL-/AmpC-producing E. coli. Therefore, we explored the tenacity of two ESBL/AmpC E. coli strains and E. coli K12 in aerosol chamber experiments at different environmental conditions. In the wind tunnel, ESBL/AmpC-producing E. coli were detected in none of the air samples (n = 66). Non-resistant E. coli were qualitatively detected in 40.7% of air samples taken at wind velocities exceeding 7.3 m s-1 . Significantly increased emission of total viable bacteria with increasing wind velocity was observed. In the aerosol chamber trials, recovery rates of airborne E. coli ranged from 0.003% to 2.8%, indicating a low airborne tenacity. Concluding, an emission of ESBL/AmpC E. coli by wind erosion in relevant concentrations appears unlikely because of the low concentration in chicken litter compared with non-resistant E. coli and their low airborne tenacity, proven in the aerosol chamber trials.
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Affiliation(s)
- Paul Siller
- Institute for Animal Hygiene and Environmental Health, Freie Universität Berlin, Berlin, Germany
| | - Katrin Daehre
- Institute for Animal Hygiene and Environmental Health, Freie Universität Berlin, Berlin, Germany
| | - Kerstin Rosen
- Institute for Animal Hygiene and Environmental Health, Freie Universität Berlin, Berlin, Germany
| | - Steffen Münch
- Leibniz Centre for Agricultural Landscape Research (ZALF), Working Group Landscape Pedology, Müncheberg, Germany
| | - Alexander Bartel
- Institute for Veterinary Epidemiology and Biostatistics, Freie Universität Berlin, Berlin, Germany
| | - Roger Funk
- Leibniz Centre for Agricultural Landscape Research (ZALF), Working Group Landscape Pedology, Müncheberg, Germany
| | - Ulrich Nübel
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany.,Braunschweig Integrated Center of Systems Biology (BRICS), Technical University, Braunschweig, Germany.,German Center for Infection Research (DZIF), Partner site Hannover-Braunschweig, Braunschweig, Germany
| | - Thomas Amon
- Institute for Animal Hygiene and Environmental Health, Freie Universität Berlin, Berlin, Germany.,Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy e.V. (ATB), Potsdam, Germany
| | - Uwe Roesler
- Institute for Animal Hygiene and Environmental Health, Freie Universität Berlin, Berlin, Germany
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26
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Heterogeneity and Diversity of mcr-8 Genetic Context in Chicken-Associated Klebsiella pneumoniae. Antimicrob Agents Chemother 2020; 65:AAC.01872-20. [PMID: 33046490 DOI: 10.1128/aac.01872-20] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 10/06/2020] [Indexed: 11/20/2022] Open
Abstract
Increasing mobile colistin resistance, mediated by the mcr gene family, in Enterobacteriaceae has become a global concern. Among the 10 reported mcr genes, mcr-8 was first identified in Klebsiella pneumoniae, which could cause severe infections with high mortality. Information about the prevalence and genetic context of mcr-8 is still lacking. In this study, we found that mcr-8 was present in 9.83% of K. pneumoniae isolates of chicken origin. S1 nuclease pulsed-field gel electrophoresis (S1-PFGE) and Southern blotting showed that the mcr-8 gene was located on a plasmid in all of the isolates. The genetic context of the plasmids exhibited considerable diversity from the whole-genome sequence through Illumina and MinION long-read sequencing. Mutations in two-component systems may function synergistically with mcr-8, resulting in extremely high resistance to colistin. In addition to colistin resistance, these plasmids also contained genes conferring resistance to beta-lactams, tetracycline, aminoglycosides, sulfonamides, macrolides, chloramphenicol, and florfenicol. Therefore, these findings indicate that the genetic context of mcr-8 is heterogeneous and diverse and that mcr-8 and certain chromosomal mechanisms jointly contribute to high-level colistin resistance in K. pneumoniae strains, which provides new insights into the resistance mechanisms of K. pneumoniae.
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27
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Emerging Transcriptional and Genomic Mechanisms Mediating Carbapenem and Polymyxin Resistance in Enterobacteriaceae: a Systematic Review of Current Reports. mSystems 2020; 5:5/6/e00783-20. [PMID: 33323413 PMCID: PMC7771540 DOI: 10.1128/msystems.00783-20] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The spread of carbapenem- and polymyxin-resistant Enterobacteriaceae poses a significant threat to public health, challenging clinicians worldwide with limited therapeutic options. This review describes the current coding and noncoding genetic and transcriptional mechanisms mediating carbapenem and polymyxin resistance, respectively. The spread of carbapenem- and polymyxin-resistant Enterobacteriaceae poses a significant threat to public health, challenging clinicians worldwide with limited therapeutic options. This review describes the current coding and noncoding genetic and transcriptional mechanisms mediating carbapenem and polymyxin resistance, respectively. A systematic review of all studies published in PubMed database between 2015 to October 2020 was performed. Journal articles evaluating carbapenem and polymyxin resistance mechanisms, respectively, were included. The search identified 171 journal articles for inclusion. Different New Delhi metallo-β-lactamase (NDM) carbapenemase variants had different transcriptional and affinity responses to different carbapenems. Mutations within the Klebsiella pneumoniae carbapenemase (KPC) mobile transposon, Tn4401, affect its promoter activity and expression levels, increasing carbapenem resistance. Insertion of IS26 in ardK increased imipenemase expression 53-fold. ompCF porin downregulation (mediated by envZ and ompR mutations), micCF small RNA hyperexpression, efflux upregulation (mediated by acrA, acrR, araC, marA, soxS, ramA, etc.), and mutations in acrAB-tolC mediated clinical carbapenem resistance when coupled with β-lactamase activity in a species-specific manner but not when acting without β-lactamases. Mutations in pmrAB, phoPQ, crrAB, and mgrB affect phosphorylation of lipid A of the lipopolysaccharide through the pmrHFIJKLM (arnBCDATEF or pbgP) cluster, leading to polymyxin resistance; mgrB inactivation also affected capsule structure. Mobile and induced mcr, efflux hyperexpression and porin downregulation, and Ecr transmembrane protein also conferred polymyxin resistance and heteroresistance. Carbapenem and polymyxin resistance is thus mediated by a diverse range of genetic and transcriptional mechanisms that are easily activated in an inducing environment. The molecular understanding of these emerging mechanisms can aid in developing new therapeutics for multidrug-resistant Enterobacteriaceae isolates.
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28
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Xiaomin S, Yiming L, Yuying Y, Zhangqi S, Yongning W, Shaolin W. Global impact of mcr-1-positive Enterobacteriaceae bacteria on "one health". Crit Rev Microbiol 2020; 46:565-577. [PMID: 33044874 DOI: 10.1080/1040841x.2020.1812510] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Polymyxins, especially polymyxin B and polymyxin E (colistin), are considered to be the last line of defence against infections caused by multi-drug-resistant (MDR) gram-negative bacteria such as carbapenem-resistant Enterobacteriaceae (CRE). However, the recent emergence and dissemination of the plasmid-mediated colistin resistance gene mcr-1 and its variants pose a serious challenge to public health and the livestock industry. This review describes the prevalence and dissemination of mcr-1-positive isolates from different sources, including animals (food animals, pet animals and wildlife), humans (healthy populations and patients) and the environment (farms, urban and rural communities and natural environments) based on existing epidemiological studies of mcr-1 and MCR-1-producing Enterobacteriaceae bacteria around the world. The major mechanisms of mcr-1 transmission across humans, animals and the environment are discussed.
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Affiliation(s)
- Shi Xiaomin
- Beijing Advance Innovation Center for Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China, P.R. China
| | - Li Yiming
- Beijing Advance Innovation Center for Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China, P.R. China
| | - Yang Yuying
- Beijing Advance Innovation Center for Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China, P.R. China
| | - Shen Zhangqi
- Beijing Advance Innovation Center for Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China, P.R. China
| | - Wu Yongning
- Beijing Advance Innovation Center for Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China, P.R. China.,NHC Key Laboratory of Food Safety Risk Assessment, Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Science, China National Center for Food Safety Risk Assessment, Beijing, China
| | - Wang Shaolin
- Beijing Advance Innovation Center for Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China, P.R. China
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Manure as a Potential Hotspot for Antibiotic Resistance Dissemination by Horizontal Gene Transfer Events. Vet Sci 2020; 7:vetsci7030110. [PMID: 32823495 PMCID: PMC7558842 DOI: 10.3390/vetsci7030110] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/31/2020] [Accepted: 08/10/2020] [Indexed: 12/26/2022] Open
Abstract
The increasing demand for animal-derived foods has led to intensive and large-scale livestock production with the consequent formation of large amounts of manure. Livestock manure is widely used in agricultural practices as soil fertilizer worldwide. However, several antibiotic residues, antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria are frequently detected in manure and manure-amended soils. This review explores the role of manure in the persistence and dissemination of ARGs in the environment, analyzes the procedures used to decrease antimicrobial resistance in manure and the potential impact of manure application in public health. We highlight that manure shows unique features as a hotspot for antimicrobial gene dissemination by horizontal transfer events: richness in nutrients, a high abundance and diversity of bacteria populations and antibiotic residues that may exert a selective pressure on bacteria and trigger gene mobilization; reduction methodologies are able to reduce the concentrations of some, but not all, antimicrobials and microorganisms. Conjugation events are often seen in the manure environment, even after composting. Antibiotic resistance is considered a growing threat to human, animal and environmental health. Therefore, it is crucial to reduce the amount of antimicrobials and the load of antimicrobial resistant bacteria that end up in soil.
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Silva V, Peixoto F, Parelho C, Garcia P, Rodrigues A, Silva A, Carvalho I, Pereira JE, Igrejas G, Poeta PACQD. Occurrence of ESBL-producing Escherichia coli in soils subjected to livestock grazing in Azores archipelago: an environment-health pollution issue? Int Microbiol 2020; 23:619-624. [PMID: 32514644 DOI: 10.1007/s10123-020-00134-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 04/21/2020] [Accepted: 06/02/2020] [Indexed: 10/24/2022]
Abstract
Antibiotics are successful drugs used in human and animal therapy; however, they must be considered as environmental pollutants. This study aims to isolate and characterize the extended-spectrum β-lactamase (ESBL) producing Escherichia coli soil from Azores Archipelago subjected to livestock agricultural practices. Twenty-four soil samples were collected from three different pasture systems with different number of cattle heads, and from a control site. Antibiotic susceptibility method was performed by Kirby-Bauer disk diffusion method against 16 antibiotics, and the presence of genes encoding lactamases, antimicrobial resistance genes, virulence factors, and phylogenetic groups was determined by polymerase chain reaction (PCR). Nine ESBLs were recovered from the three grazing sites, and all isolates presented the beta-lactamase genes blaCTX-M-3 and blaSHV. E. coli isolates were resistance to tetracycline and streptomycin and harbored the tetB, strA, and strB genes. One isolate also showed resistance to sulfonamides, and the genes sul1 and sul2 were detected. The isolates were grouped into the following phylogenic groups: B1 (n = 6), D (n = 2), and A (n = 1). The presence of antibiotics and resistance genes in soils may be the source to the development of antimicrobial resistance, which may have negative consequences in human and animal health.
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Affiliation(s)
- Vanessa Silva
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Functional Genomics and Proteomics Unit, University of Tras-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisboa, Caparica, Lisboa, Portugal
| | - Fernando Peixoto
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Carolina Parelho
- Faculty of Sciences and Technology, University of the Azores, Ponta Delgada, Portugal.,cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores, Ponta Delgada, Portugal
| | - Patrícia Garcia
- Faculty of Sciences and Technology, University of the Azores, Ponta Delgada, Portugal.,cE3c, Centre for Ecology, Evolution and Environmental Changes, and Azorean Biodiversity Group, University of the Azores, Ponta Delgada, Portugal
| | - Armindo Rodrigues
- Faculty of Sciences and Technology, University of the Azores, Ponta Delgada, Portugal.,IVAR, Institute of Volcanology and Risks Assessment, University of the Azores, Ponta Delgada, Portugal
| | - Adriana Silva
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Functional Genomics and Proteomics Unit, University of Tras-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisboa, Caparica, Lisboa, Portugal
| | - Isabel Carvalho
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Functional Genomics and Proteomics Unit, University of Tras-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisboa, Caparica, Lisboa, Portugal
| | | | - Gilberto Igrejas
- Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Functional Genomics and Proteomics Unit, University of Tras-os-Montes and Alto Douro (UTAD), Vila Real, Portugal.,Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisboa, Caparica, Lisboa, Portugal
| | - Patrícia Alexandra Curado Quintas Dinis Poeta
- Microbiology and Antibiotic Resistance Team (MicroART), Department of Veterinary Sciences, University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal. .,Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), University NOVA of Lisboa, Caparica, Lisboa, Portugal.
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Luo Q, Wang Y, Xiao Y. Prevalence and transmission of mobilized colistin resistance (mcr) gene in bacteria common to animals and humans. BIOSAFETY AND HEALTH 2020. [DOI: 10.1016/j.bsheal.2020.05.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Martins AF, Rabinowitz P. The impact of antimicrobial resistance in the environment on public health. Future Microbiol 2020; 15:699-702. [DOI: 10.2217/fmb-2019-0331] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Andreza Francisco Martins
- Department of Microbiology, Immunology & Parasitology, Federal University of Rio Grande do Sul, Sarmento Leite 500, Porto Alegre, 90050 170, RS, Brazil
| | - Peter Rabinowitz
- Department of Environmental & Occupational Health Sciences, Center of One Health Research, University of Washington, Seattle, WA 98195, USA
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Zheng B, Feng C, Xu H, Yu X, Guo L, Jiang X, Song X. Detection and characterization of ESBL-producing Escherichia coli expressing mcr-1 from dairy cows in China. J Antimicrob Chemother 2020; 74:321-325. [PMID: 30418551 DOI: 10.1093/jac/dky446] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 10/02/2018] [Indexed: 01/19/2023] Open
Abstract
Objectives To investigate the prevalence and molecular characteristics of ESBL-producing Escherichia coli (ESBL-EC) in faecal samples from dairy cows in China. Methods In total, 651 faecal samples were collected from cows distributed among the 10 provinces of China. Potential ESBL-EC isolates were cultured on selective medium. The clonal relatedness of the ESBL-EC isolates was assessed using MLST. WGS was conducted on 3 mcr-positive isolates and 14 additional randomly selected ESBL-EC isolates. Southern blot, S1-PFGE and conjugation were performed for mcr-1-carrying isolates. The genetic environment of the pMCR-JLF4 plasmid was also analysed. Results In total, 290 unique ESBL-EC isolates were detected from 284 cows (43.6%). Alleles of CTX-M were observed in 94.1% (273/290) of all isolates. The most prevalent genotypes observed in this study were blaCTX-M-14, blaCTX-M-15, blaCTX-M-17 and blaCTX-M-55. Differentiation of 79 STs with a polyclonal structure was accomplished using MLST. Clonal complex 10 was the most prevalent major complex detected here. Furthermore, the mcr-1 gene was detected in three isolates. The complete sequence of the mcr-1-containing pMCR-JLF4 was determined. The plasmid was 66.7 kb in length, with a genetic structure of nikA-nikB-mcr-1-pap2. Conjugation analysis confirmed that the mcr-1 gene in pMCR-JLF4 was transferable without the assistance of the ISApl1 gene. Conclusions The data presented here suggest high prevalence of ESBL-EC in Chinese cow farms. Furthermore, it was clearly demonstrated that commensal E. coli strains can be reservoirs of blaCTX-M genes, potentially contributing to the dissemination and transfer of the mcr-1 gene to pathogenic bacteria among cows.
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Affiliation(s)
- 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, School of Medicine, Zhejiang University, Hangzhou, China
| | - Chunyan Feng
- Institute of Animal Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 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, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiao Yu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Lihua Guo
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Xiawei Jiang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaohui Song
- China Animal Disease Control Center, Beijing, China
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Han H, Liu W, Cui X, Cheng X, Jiang X. Co-Existence of mcr-1 and bla NDM-5 in an Escherichia coli Strain Isolated from the Pharmaceutical Industry, WWTP. Infect Drug Resist 2020; 13:851-854. [PMID: 32214831 PMCID: PMC7083644 DOI: 10.2147/idr.s245047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/08/2020] [Indexed: 01/05/2023] Open
Abstract
Abstract The emergence of the plasmid-borne colistin-resistant gene (mcr-1) poses a great threat to human health. What is worse, the recent observations of the co-existence of mcr-1 with other antimicrobial resistance genes in some bacteria cause further concern. Here, we present the first report of a wild Escherichia coli strain that co-carries an mcr-1 encoding phage-like IncY plasmid (pR15_MCR-1) and a blaNDM-5 encoding IncX3 plasmid (pR15_NDM-5) from a pharmaceutical industry, wastewater treatment plant, in China. This study highlights the spreading of E. coli carrying both mcr-1 and blaNDM-5 genes in the pharmaceutical industry. Importance Escherichia coli strains that carry both mcr-1 and blaNDM-5 genes are of great health concern and are already found in humans and animals worldwide, yet there is a paucity of observations of this resistant strain in the environment. Here we present the first isolation of an E. coli strain (R15) that co-carries mcr-1 and blaNDM-5 genes from a wastewater treatment plant in China. Whole-genome sequencing indicated that R15 harbored two plasmids, pR15_MCR-1 and pR15_NDM-5, that carry mcr-1 and blaNDM-5, respectively. The observation of this wild-derived E. coli strain that carries mcr-1 and blaNDM-5 genes simultaneously calls for the urgency to improve monitoring and reducing its further spreading.
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Affiliation(s)
- Huiming Han
- Medical College, Beihua University, Jilin, People's Republic of China.,The Center for Infection and Immunity, Beihua University, Jilin, People's Republic of China
| | - Wenhong Liu
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China
| | - Xinjie Cui
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China
| | - Xu Cheng
- Medical College, Beihua University, Jilin, People's Republic of China.,The Center for Infection and Immunity, Beihua University, Jilin, People's Republic of China
| | - Xiawei Jiang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, People's Republic of China
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Occurrence and Characteristics of Mobile Colistin Resistance ( mcr) Gene-Containing Isolates from the Environment: A Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17031028. [PMID: 32041167 PMCID: PMC7036836 DOI: 10.3390/ijerph17031028] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 01/09/2020] [Accepted: 01/20/2020] [Indexed: 01/04/2023]
Abstract
The emergence and spread of mobile colistin (COL) resistance (mcr) genes jeopardize the efficacy of COL, a last resort antibiotic for treating deadly infections. COL has been used in livestock for decades globally. Bacteria have mobilized mcr genes (mcr-1 to mcr-9). Mcr-gene-containing bacteria (MGCB) have disseminated by horizontal/lateral transfer into diverse ecosystems, including aquatic, soil, botanical, wildlife, animal environment, and public places. The mcr-1, mcr-2, mcr-3, mcr-5, mcr-7, and mcr-8 have been detected in isolates from and/or directly in environmental samples. These genes are harboured by Escherichia coli, Enterobacter, Klebsiella, Proteus, Salmonella, Citrobacter, Pseudomonas, Acinetobacter, Kluyvera, Aeromonas, Providencia, and Raulotella isolates. Different conjugative and non-conjugative plasmids form the backbones for mcr in these isolates, but mcr have also been integrated into the chromosome of some strains. Insertion sequences (IS) (especially ISApl1) located upstream or downstream of mcr, class 1–3 integrons, and transposons are other drivers of mcr in the environment. Genes encoding multi-/extensive-drug resistance and virulence are often co-located with mcr on plasmids in environmental isolates. Transmission of mcr to/among environmental strains is clonally unrestricted. Contact with the mcr-containing reservoirs, consumption of contaminated animal-/plant-based foods or water, international animal-/plant-based food trades and travel, are routes for transmission of MGCB.
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Emergence and Comparative Genomics Analysis of Extended-Spectrum-β-Lactamase-Producing Escherichia coli Carrying mcr-1 in Fennec Fox Imported from Sudan to China. mSphere 2019; 4:4/6/e00732-19. [PMID: 31748247 PMCID: PMC6887861 DOI: 10.1128/msphere.00732-19] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The aim of this study was to investigate the occurrence and genomic characteristics of extended-spectrum-β-lactamase-producing Escherichia coli (ESBL-EC) in fennec fox imported from Sudan to China. We screened 88 fecal samples from fennec fox for ESBL-EC, using cefotaxime- and meropenem-supplemented selective medium. Antimicrobial susceptibility testing was performed by the agar dilution method except for colistin and tigecycline; for colistin and tigecycline, testing was conducted by the broth microdilution method. ESBL-EC bacteria were sequenced, and their genomes were characterized. Plasmid conjugation, S1 nuclease pulsed-field gel electrophoresis (PFGE), and Southern blotting were performed for a MCR-1-producing isolate. The genetic environment of mcr-1 and ESBL genes was also investigated. A total of 29 ESBL-EC bacteria were isolated from 88 fennec fox (32.9%), while no carbapenemase producers were found. The most prevalent genotypes were the bla CTX-M-55 and bla CTX-M-14 genes, followed by bla CTX-M-15 and bla CTX-M-64 We detected nine sequence types among 29 ESBL-EC. Furthermore, the mcr-1 gene was detected in isolate EcFF273. Conjugation analysis confirmed that the mcr-1 gene was transferable. S1 PFGE, Southern blotting, and whole-genome sequencing revealed that mcr-1 and bla CTX-M-64 were both located on a 65-kb IncI2 plasmid. This study reports for the first time the occurrence of ESBL-EC in fennec fox. The high prevalence of ESBL producers and the occurrence of MCR-1 producer in fennec fox imported into China from Sudan are unexpected. In addition, it clearly demonstrated that commensal E. coli strains can be reservoirs of bla CTX-M and mcr-1, potentially contributing to the dissemination and transfer of such genes to pathogenic bacteria among fennec fox. Our results support the implication of fennec fox as a biological vector for ESBL-producing members of the Enterobacteriaceae family.IMPORTANCE The extended-spectrum-β-lactamase (ESBL)-producing members of the Enterobacteriaceae family are a global concern for both animal and human health. There is some information indicating a high prevalence of ESBL producers in food animals. Moreover, there have been an increasing number of reports on ESBL-producing strains resistant to the last-resort antibiotic colistin with the global dissemination of the plasmid-mediated mcr-1 gene, which is believed to have originated in animal breeding. However, little is known regarding the burden of ESBL-producing Enterobacteriaceae on wild animals. No data were available on the prevalence of antimicrobial resistance (AMR) among wild animals imported into China. This is the first study to investigate the microbiological and genomics surveillance investigation of ESBL colonization among fennec fox (Vulpes zerda) imported from Sudan to China, and we uncovered a high prevalence of ESBL-EC. Furthermore, the underlying mechanism of colistin resistance in an isolate that harbored mcr-1 was also investigated. Results of characterization and analysis of 29 ESBL-producing E. coli may have important implications on our understanding of the transmission dynamics of these bacteria. We emphasize the importance of improved multisectoral surveillance for colistin-resistant E. coli in this region.
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Multi-Antibiotic Resistance and Factors Affecting Carriage of Extended Spectrum β-Lactamase-Producing Enterobacteriaceae in Pediatric Population of Enugu Metropolis, Nigeria. Med Sci (Basel) 2019; 7:medsci7110104. [PMID: 31744239 PMCID: PMC6915503 DOI: 10.3390/medsci7110104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/1970] [Revised: 11/06/2019] [Accepted: 11/06/2019] [Indexed: 01/04/2023] Open
Abstract
Extended-spectrum β-lactamase (ESBL)-producing organisms have become a serious challenge in healthcare delivery globally. The prevalence of ESBL carriage in healthy and sick children in Enugu, Nigeria, was bacteriologically investigated in this study. Four hundred and twenty-two biological samples (mid-stream urine and feces) were bacteriologically analyzed. The isolates were screened for ESBL production using Clinical and Laboratory Standards Institute (CLSI) breakpoints. The suspected ESBL producers were confirmed using double disc synergy test method. Out of the 162 isolates screened, 32 (19.8%) were confirmed as ESBL positive, with a prevalence of 25.32% among sick children in Enugu State University Teaching Hospital (ESUTH), Parklane, Enugu and 13.89% in apparently healthy children in a community setting. Klebsiella spp. and Escherichia coli had the highest prevalence of 34.6% and 28.6%, respectively; Citrobacter spp. and Enterobacter spp. were 18.2% and 16.7%, respectively. The ESBL positive isolates were resistant to sulfamethoxazole/trimethoprim (100%), tetracycline (100%), kanamycin (96.9%), nitrofurantoin (84.4%), ciprofloxacin (68.6%), and chloramphenicol (62.5%) but susceptible to meropenem (100%), colistin (56.3%), and gentamicin (50%). Klebsiella spp. had the highest ESBL occurrence among sick children while E. coli had the highest ESBL occurrence among healthy children in Enugu. All ESBL-positive isolates were multiply resistant to conventional antibiotics. The emergence and spread of β-lactamase-producing Enterobacteriaceae in hospital and community environments highlight the possibility for an infection outbreak if not checked.
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Li Z, Cao Y, Yi L, Liu JH, Yang Q. Emergent Polymyxin Resistance: End of an Era? Open Forum Infect Dis 2019; 6:5550895. [PMID: 31420655 PMCID: PMC6767968 DOI: 10.1093/ofid/ofz368] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Indexed: 12/03/2022] Open
Abstract
Until recently, the polymyxin antibiotics were used sparingly due to dose limiting toxicities. However, the lack of therapeutic alternatives for infections caused by highly resistant Gram-negative bacteria has led to the increased use of the polymyxins. Unfortunately, the world has witnessed increased rates of polymyxin resistance in the last decade, which is likely in part due to its irrational use in human and veterinary medicine. The spread of polymyxin resistance has been aided by the dissemination of the transferable polymyxin-resistance gene, mcr, in humans and the environment. The mortality of colistin-resistant bacteria (CoRB) infections varies in different reports. However, poor clinical outcome was associated with prior colistin treatment, illness severity, complications, and multidrug resistance. Detection of polymyxin resistance in the clinic is possible through multiple robust and practical tests, including broth microdilution susceptibility testing, chromogenic agar testing, and molecular biology assays. There are multiple risk factors that increase a person’s risk for infection with a polymyxin-resistant bacteria, including age, prior colistin treatment, hospitalization, and ventilator support. For patients that are determined to be infected by polymyxin-resistant bacteria, various antibiotic treatment options currently exist. The rising trend of polymyxin resistance threatens patient care and warrants effective control.
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Affiliation(s)
- Zekun Li
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China.,Department of Laboratory Medicine, Xiangya School of Medicine, Central South University, Changsha, China
| | - Yuping Cao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lingxian Yi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jian-Hua Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Qiwen Yang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China.,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, China
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Jiang X, Cui X, Xu H, Liu W, Tao F, Shao T, Pan X, Zheng B. Whole Genome Sequencing of Extended-Spectrum Beta-Lactamase (ESBL)-Producing Escherichia coli Isolated From a Wastewater Treatment Plant in China. Front Microbiol 2019; 10:1797. [PMID: 31428078 PMCID: PMC6688389 DOI: 10.3389/fmicb.2019.01797] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 07/22/2019] [Indexed: 12/26/2022] Open
Abstract
Background and Objectives Wastewater treatment plants (WWTPs) are one of the major reservoirs for antimicrobial resistant bacteria (ARB) and antimicrobial resistance genes (ARGs) in the environment. Thus, the investigation on ARB and ARGs from WWTPs has attracted increasing attention in recent years. In order to uncover the resistome in a WWTP treating effluents from a pharmaceutical industry in China, the extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli strains were isolated and their whole genome sequences were obtained and analyzed. Moreover, metagenomic sequencing was applied to give a comprehensive view of antibiotic resistance in this WWTP. Methods 18 ESBL-producing E. coli strains were isolated from a WWTP located in Taizhou, China on April, 2017. All strains were sequenced using Illumina HiSeq 2000 sequencer. The whole genome sequences were assembled using SPAdes software and annotated with RAST server. Sequence types (STs), plasmids, ARGs and virulence genes were predicted from the genomes using MLST, Plasmid Finder, ResFinder and Virulence Finder, respectively. Metagenomic DNA of the same sample was extracted and sequenced using Illumina Hiseq X Ten platform. Metagenomic sequences were assembled using SOAPdenovo software. Results All 18 ESBL-producing E. coli strains were resistant to ampicillin, cefazolin, and ceftriaxone. Analysis of their genomes revealed that all strains carried beta-lactamase encoding genes and the most prevalent type was bla CTX-M . Various virulence genes and ARGs confronting resistance to other types of antimicrobial agents were also predicted. Further investigation on the metagenomics data indicated 11 ARGs with high amino acid identities to the known ARGs. Five of these ARGs, aadA1, aac(6')-lb-cr, flo(R), sul2 and sul1, were also present in the genomes of the ESBL-producing E. coli isolated from the same sample. Conclusion Our study revealed the resistome of a pharmaceutical WWTP by both culture-dependent and metegenomic methods. The existence of ESBL-producing E. coli strains, indicating that pharmaceutical WWTP can play a significant role in the emergence of ARB. The occurrence of ARGs annotated from the metagenomic data suggests that pharmaceutical WWTP can play a significant role in the emergence of ARGs. Our findings highlight the need for strengthening the active surveillance of ARB and ARGs from pharmaceutical industry.
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Affiliation(s)
- Xiawei Jiang
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xinjie Cui
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 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
| | - Wenhong Liu
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fangfang Tao
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Tiejuan Shao
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaoping Pan
- College of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - 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
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Gao Y, Lu C, Shen D, Liu J, Ma Z, Yang B, Ling W, Waigi MG. Elimination of the risks of colistin resistance gene (mcr-1) in livestock manure during composting. ENVIRONMENT INTERNATIONAL 2019; 126:61-68. [PMID: 30776751 DOI: 10.1016/j.envint.2019.02.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 02/02/2019] [Accepted: 02/03/2019] [Indexed: 06/09/2023]
Abstract
Since its discovery in Escherichia coli, the emergence and rapid spread of the plasmid-mediated colistin resistance gene mcr-1 have become a public health concern. Livestock manure is a potentially important reservoir of mcr-1 because colistin has been widely used in livestock production. Efforts made to accurately quantify the prevalence of mcr-1 in livestock manure and the dynamic changes therein during thermophilic composting have been few and far between. In this study, mcr-1 in 51 collected samples from four kinds of livestock manures was detected and quantified. In total, 16 manure samples were found to be mcr-1 positive, with a detection frequency of 31% in 51 samples. The numbers of mcr-1 gene copies in 12 positive manure samples with a high prevalence of mcr-1 were 107-109 copies/g dry weight. During composting, >90% of mcr-1 in the manure was eliminated in 15 days at high temperature (44-65 °C), and mcr-1 was completely undetectable after 22 days. The reduction of mcr-1 following manure composting may be ascribed to the decreased number of potential mcr-1-harboring bacteria, Enterobacteriaceae and Pseudomonas. The results indicated that thermophilic composting effectively eliminated mcr-1 and inhibited its spread from livestock manure to the environment.
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Affiliation(s)
- Yanzheng Gao
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Chao Lu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Di Shen
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Juan Liu
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Zhao Ma
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Bing Yang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Wanting Ling
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Michael Gatheru Waigi
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
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Wyrsch ER, Reid CJ, DeMaere MZ, Liu MY, Chapman TA, Roy Chowdhury P, Djordjevic SP. Complete Sequences of Multiple-Drug Resistant IncHI2 ST3 Plasmids in Escherichia coli of Porcine Origin in Australia. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2019. [DOI: 10.3389/fsufs.2019.00018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Wang X, Wang Y, Zhou Y, Wang Z, Wang Y, Zhang S, Shen Z. Emergence of Colistin Resistance Gene mcr-8 and Its Variant in Raoultella ornithinolytica. Front Microbiol 2019; 10:228. [PMID: 30828324 PMCID: PMC6384272 DOI: 10.3389/fmicb.2019.00228] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 01/28/2019] [Indexed: 11/13/2022] Open
Abstract
Recently, a novel mobile colistin resistance gene, mcr-8, was identified in Klebsiella pneumoniae. Here, we report the identification of mcr-8 and its variant, mcr-8.4, in Raoultella ornithinolytica isolates which also belong to Enterobacteriaceae family. The mcr-8 gene was located on transferrable plasmids with difference sizes. Notably, the transferability of mcr-8-carrying plasmids was enhanced once they entered into Escherichia coli hosts and multiple β-lactamase genes could co-transfer with mcr-8. These findings expand our knowledge of mcr-8-carrying bacterial species.
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Affiliation(s)
- Xiaoming Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yao Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, China Agricultural University, Beijing, China
| | - Ying Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zheng Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, China Agricultural University, Beijing, China
| | - Yang Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, China Agricultural University, Beijing, China
| | - Suxia Zhang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, Beijing Laboratory for Food Quality and Safety, China Agricultural University, Beijing, China
| | - Zhangqi Shen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, China
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Yang F, Shen C, Zheng X, Liu Y, El-Sayed Ahmed MAEG, Zhao Z, Liao K, Shi Y, Guo X, Zhong R, Xu Z, Tian GB. Plasmid-mediated colistin resistance gene mcr-1 in Escherichia coli and Klebsiella pneumoniae isolated from market retail fruits in Guangzhou, China. Infect Drug Resist 2019; 12:385-389. [PMID: 30809099 PMCID: PMC6377047 DOI: 10.2147/idr.s194635] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background As a result of the growing prevalence of the plasmid-mediated mobile colistin resistance gene mcr-1 among Gram-negative bacteria, the surveillance of mcr-1 has been globally applied. In our study, we aimed to shed light on the possibility of transmission of mcr-1-resistant isolates through market retail fruits. Methods and results Herein, 133 different fruit surface samples were collected and screened for the different MCR variants (mcr-1 to mcr-8) using PCR and confirmed with sequencing. We identify for the first time mcr-1-carrying Escherichia coli and Klebsiella pneumoniae from market retail fruits in Guangzhou, China. Minimum inhibitory concentrations were detected by the broth microdilution method. Liquid mating was performed to check the transferability of the mcr-1 gene. Pulsed field gel electrophoresis analysis of S1 nuclease-digested DNA and Southern blotting were performed to check the location of the mcr-1 gene. Then, whole-genome sequencing and in silico multilocus sequence typing analysis were performed. Conclusion We showed that E. coli GB110 can mediate the spreading of antibiotic resistance genes through the food chain, while K. pneumoniae GB015 was considered to be the progenitor of the most successful multidrug-resistant clone. Since fruits are usually consumed fresh, this may serve as a direct source of mcr-1-producing bacteria in humans that requires prompt surveillance and intervention to limit the spread of resistance.
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Affiliation(s)
- Fan Yang
- Department of Microbiology, School of Basic Medical Science, Xinxiang Medical University, Xinxiang, China
| | - Cong Shen
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China,
| | - Xiaobin Zheng
- Department of Respiratory Medicine, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Yan Liu
- Department of Laboratory, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Mohamed Abd El-Gawad El-Sayed Ahmed
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China, .,Department of Microbiology and Immunology, Faculty of Pharmacy, Misr University for Science and Technology (MUST), Cairo, 6th of October City, Egypt
| | - Zihan Zhao
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China,
| | - Kang Liao
- Department of Clinical Laboratory, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yaling Shi
- Department of Clinical Laboratory, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Xin Guo
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China,
| | - Ruoxuan Zhong
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China,
| | - Zhimin Xu
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China,
| | - Guo-Bao Tian
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China, .,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China,
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Shen C, Feng S, Chen H, Dai M, Paterson DL, Zheng X, Wu X, Zhong LL, Liu Y, Xia Y, Ma R, Huang X, Tian GB. Transmission ofmcr-1-Producing Multidrug-resistant Enterobacteriaceae in Public Transportation in Guangzhou, China. Clin Infect Dis 2018; 67:S217-S224. [DOI: 10.1093/cid/ciy661] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Cong Shen
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University
- Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou
| | - Siyuan Feng
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University
- Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou
| | - Hongtao Chen
- Department of Laboratory, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai
| | - Min Dai
- School of Laboratory Medicine, Chengdu Medical College, China
| | - David L Paterson
- University of Queensland Centre for Clinical Research, The University of Queensland, Herston, Brisbane, Australia
| | - Xiaobin Zheng
- Department of Respiratory Medicine, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai
| | - Xingui Wu
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University
| | - Lan-Lan Zhong
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University
- Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou
| | - Yan Liu
- Department of Laboratory, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai
| | - Yong Xia
- Department of Clinical Laboratory Medicine, the Third Affiliated Hospital of Guangzhou Medical University
| | - Rui Ma
- School of Public Health, Sun Yat-sen University, Guangzhou
| | - Xi Huang
- Program of Pathobiology and Immunology, the Fifth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhuhai, China
| | - Guo-Bao Tian
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University
- Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou
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Sun D. Pull in and Push Out: Mechanisms of Horizontal Gene Transfer in Bacteria. Front Microbiol 2018; 9:2154. [PMID: 30237794 PMCID: PMC6135910 DOI: 10.3389/fmicb.2018.02154] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/22/2018] [Indexed: 01/06/2023] Open
Abstract
Horizontal gene transfer (HGT) plays an important role in bacterial evolution. It is well accepted that DNA is pulled/pushed into recipient cells by conserved membrane-associated DNA transport systems, which allow the entry of only single-stranded DNA (ssDNA). However, recent studies have uncovered a new type of natural bacterial transformation in which double-stranded DNA (dsDNA) is taken up into the cytoplasm, thus complementing the existing methods of DNA transfer among bacteria. Regulated by the stationary-phase regulators RpoS and cAMP receptor protein (CRP), Escherichia coli establishes competence for natural transformation with dsDNA, which occurs in agar plates. To pass across the outer membrane, a putative channel, which may compete for the substrate with the porin OmpA, may mediate the transfer of exogenous dsDNA into the cell. To pass across the inner membrane, dsDNA may be bound to the periplasmic protein YdcS, which delivers it into the inner membrane channel formed by YdcV. The discovery of cell-to-cell contact-dependent plasmid transformation implies the presence of additional mechanism(s) of transformation. This review will summarize the current knowledge about mechanisms of HGT with an emphasis on recent progresses regarding non-canonical mechanisms of natural transformation. Fully understanding the mechanisms of HGT will provide a foundation for monitoring and controlling multidrug resistance.
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Affiliation(s)
- Dongchang Sun
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, China
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Mafiz AI, Perera LN, He Y, Zhang W, Xiao S, Hao W, Sun S, Zhou K, Zhang Y. Case study on the soil antibiotic resistome in an urban community garden. Int J Antimicrob Agents 2018; 52:241-250. [DOI: 10.1016/j.ijantimicag.2018.05.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/28/2018] [Accepted: 05/23/2018] [Indexed: 09/30/2022]
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Wang X, Wang Y, Wang Y, Zhang S, Shen Z, Wang S. Emergence of the colistin resistance gene mcr-1 and its variant in several uncommon species of Enterobacteriaceae from commercial poultry farm surrounding environments. Vet Microbiol 2018; 219:161-164. [PMID: 29778190 DOI: 10.1016/j.vetmic.2018.04.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 03/23/2018] [Accepted: 04/03/2018] [Indexed: 11/27/2022]
Abstract
The colistin resistance gene mcr-1 has been detected in multiple members of Enterobacteriaceae family. Here, we report the emergence of mcr-1 in Providencia alcalifaciens and a mcr-1 variant, named mcr-1.3, in Raoultella planticola. Both of the mcr-1-carrying plasmids in these two isolates belong to IncI2 type of plasmids, but they are different in sizes and genetic characteristics. We also detected the mcr-1 gene in one Enterobacter cloacae isolate, however, the mcr-1-carrying plasmid is distinct from the previous reports. Conjugation assay showed that mcr-1-carrying plasmids in P. alcalifaciens and E. cloacae were successfully transferred into recipient E. coli strains. It is worth noting that the transferability of mcr-1-carrying plasmid from E. cloacae was enhanced once it entered into E. coli hosts, which might further accelerate the dissemination of mcr-1 among Enterobacteriaceae. These findings further expand our knowledge of the mcr-1-carrying species in Enterobacteriaceae.
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Affiliation(s)
- Xiaoming Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety and Beijing Laboratory for Food Quality and Safety, Beijing, 100193, China
| | - Yao Wang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety and Beijing Laboratory for Food Quality and Safety, Beijing, 100193, China
| | - Yang Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Suxia Zhang
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety and Beijing Laboratory for Food Quality and Safety, Beijing, 100193, China
| | - Zhangqi Shen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Shaolin Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety and Beijing Laboratory for Food Quality and Safety, Beijing, 100193, China.
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