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Zhang TL, He DD, Liu YY, Yu LJ, Hu GZ, Pan YS. Characterization of IncI1/ST71 and IncF18:A-:B1 multidrug-resistance plasmids from an avian Escherichia coli isolate. Plasmid 2022; 123-124:102651. [PMID: 36191658 DOI: 10.1016/j.plasmid.2022.102651] [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: 05/06/2022] [Revised: 09/18/2022] [Accepted: 09/27/2022] [Indexed: 11/30/2022]
Abstract
To characterize IncI1 and IncF18:A-:B1 multidrug-resistance plasmids from an avian Escherichia coli isolate, antibiotic susceptibility testing, conjugation assays, transformation assays, S1-PFGE, and WGS analysis were performed. The 119,457-bp plasmid pEC014-1 with a multidrug-resistance region (MRR) containing four different segments interspersed with six IS26 elements, belonged to incompatibility group I1 and sequence type 71. The 154,516-bp plasmid pEC014-2 with two replicons, typed as FII-18 and FIB-1, carried 14 resistance determinants including blaTEM-1b, blaOXA-1, oqxAB, dfrA17, aac(6')-Ib-cr, sul1, sul2, tet(A), floR, catB3, hph(aph(4)-Ia), aacC4(aac(3)-IV), aadA5, arr-3, and a merEDACPTR loci in MRR, and additionally encoded three virulence loci: iroNEDCB, sitABCD, and iucABCD-iutA. Plasmid stability assays showed that pEC014-1 and pEC014-2 were stable in recipient E. coli C600 for at least 15 days of passage. Competition assays were carried out to evaluate the fitness impact of pEC014-2 carriage in vitro, revealing a decrease in host fitness. Growth kinetics showed that the growth rate for pEC014-1 or/and pEC014-2 bearing cells was significantly slower than that of the E. coli C600 host strain in the exponential stage (p < 0.01), with only cells carrying pEC014-1 sustaining rapid growth after 6 h of exponential growth. Our findings highlight the mosaic structures of epidemic plasmid IncI1/ST71 and F18:A-:B1 lineages and contribute to a better understanding of the evolution and dissemination of these multidrug resistance and virulence plasmids.
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Affiliation(s)
- Teng-Li Zhang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Dan-Dan He
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Ying-Ying Liu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Li-Jie Yu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Gong-Zheng Hu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Yu-Shan Pan
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, China.
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Incompatibility Group I1 (IncI1) Plasmids: Their Genetics, Biology, and Public Health Relevance. Microbiol Mol Biol Rev 2021; 85:85/2/e00031-20. [PMID: 33910982 DOI: 10.1128/mmbr.00031-20] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Bacterial plasmids are extrachromosomal genetic elements that often carry antimicrobial resistance (AMR) genes and genes encoding increased virulence and can be transmissible among bacteria by conjugation. One key group of plasmids is the incompatibility group I1 (IncI1) plasmids, which have been isolated from multiple Enterobacteriaceae of food animal origin and clinically ill human patients. The IncI group of plasmids were initially characterized due to their sensitivity to the filamentous bacteriophage If1. Two prototypical IncI1 plasmids, R64 and pColIb-P9, have been extensively studied, and the plasmids consist of unique regions associated with plasmid replication, plasmid stability/maintenance, transfer machinery apparatus, single-stranded DNA transfer, and antimicrobial resistance. IncI1 plasmids are somewhat unique in that they encode two types of sex pili, a thick, rigid pilus necessary for mating and a thin, flexible pilus that helps stabilize bacteria for plasmid transfer in liquid environments. A key public health concern with IncI1 plasmids is their ability to carry antimicrobial resistance genes, including those associated with critically important antimicrobials used to treat severe cases of enteric infections, including the third-generation cephalosporins. Because of the potential importance of these plasmids, this review focuses on the distribution of the plasmids, their phenotypic characteristics associated with antimicrobial resistance and virulence, and their replication, maintenance, and transfer.
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He DD, Zhao SY, Wu H, Hu GZ, Zhao JF, Zong ZY, Pan YS. Antimicrobial resistance-encoding plasmid clusters with heterogeneous MDR regions driven by IS26 in a single Escherichia coli isolate. J Antimicrob Chemother 2020; 74:1511-1516. [PMID: 30820562 DOI: 10.1093/jac/dkz044] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 12/27/2018] [Accepted: 01/08/2019] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND IS26-flanked transposons played an increasingly important part in the mobilization and development of resistance determinants. Heterogeneous resistance-encoding plasmid clusters with polymorphic MDR regions (MRRs) conferred by IS26 in an individual Escherichia coli isolate have not yet been detected. OBJECTIVES To characterize the complete sequence of a novel blaCTX-M-65- and fosA3-carrying IncZ-7 plasmid with dynamic MRRs from an E. coli isolate, and to depict the mechanism underlying the spread of resistance determinants and genetic polymorphisms. METHODS The molecular characterization of a strain carrying blaCTX-M-65 and fosA3 was analysed by antimicrobial susceptibility testing and MLST. The transferability of a plasmid bearing blaCTX-M-65 and fosA3 was determined by conjugation assays, and the complete structure of the plasmid was obtained by Illumina, PacBio and conventional PCR mapping, respectively. The circular forms derived from IS26-flanked transposons were detected by reverse PCR and sequencing. RESULTS A novel IncZ-7 plasmid pEC013 (∼118kb) harbouring the blaCTX-M-65 and fosA3 genes was recovered from E. coli isolate EC013 belonging to D-ST117. The plasmid was found to have heterogeneous and dynamic MRRs in an individual strain and the IS26-flanked composite transposon-derived circular intermediates were identified and characterized in pEC013. CONCLUSIONS The heterogeneous MRRs suggested that a single plasmid may actually be a cluster of plasmids with the same backbone but varied MRRs, reflecting the plasmid's heterogeneity and the survival benefits of having a response to antimicrobial-related threatening conditions in an individual strain.
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Affiliation(s)
- Dan Dan He
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Shi Yu Zhao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Hua Wu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Gong Zheng Hu
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Jin Feng Zhao
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
| | - Zhi Yong Zong
- West China Hospital, Sichuan University, Chengdu, China
| | - Yu Shan Pan
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, China
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Liu X, Zhang J, Li Y, Shen Q, Jiang W, Zhao K, He Y, Dai P, Nie Z, Xu X, Zhou Y. Diversity and frequency of resistance and virulence genes in bla KPC and bla NDM co-producing Klebsiella pneumoniae strains from China. Infect Drug Resist 2019; 12:2819-2826. [PMID: 31571938 PMCID: PMC6750849 DOI: 10.2147/idr.s214960] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 07/26/2019] [Indexed: 12/15/2022] Open
Abstract
Background Emergence of blaKPC and blaNDM co-producing Klebsiella pneumoniae strains have led to the limited therapeutic options for clinical treatment. Understanding the diversity and frequency of resistance and virulence genes of these isolates is of great significance. Purpose The aim of this study is to research the diversity and frequency of resistance and virulence genes in the blaKPC and blaNDM co-producing Klebsiella pneumoniae strains. Methods and Results In this study, 117 K. pneumonia strains were isolated from China, and among of which, 24 were found to be blaKPC and blaNDM co-producing with significant resistance against almost all the commonly used antibiotics. Additionally, 4 strains were hypermucoviscous and 8 showed high serum resistance. Overall, blaSHV, blaCTX-M, tetA and sul1 resistance genes found in 100% of the isolates, followed by blaTEM (95.8%), oqxA/B (91.7%), qnrB (87.5%), aac(6’)Ib-cr (83.3%), blaDHA (79.2%), rmtB (66.7%), qnrS (54.2%), cat(54.2%), floR (50.0%), sul2 (45.8%) cmlA (20.8%)andblaCMY (8.33%), respectively. What’ more, seven blaCTX-M subtypes [blaCTX-M-14 (n=18), blaCTX-M-3(n=11), blaCTX-M-65 (n=4), blaCTX-M-15 (n=3), blaCTX-M-28 (n=2), blaCTX-M-55 (n=2), blaCTX-M-22 (n=1)] and six blaSHV subtypes [blaSHV-12(n=16), blaSHV-11 (n=4), blaSHV-2a(n=1), blaSHV-1(n=1), blaSHV-38(n=1) and blaSHV-28(n=1)] were detected. The frequency of virulence genes was as follows: 100% for entB, ybtS and irp, 95.8% for mrkD, 91.66% for fimH, 79.2% for iutA, 62.5% for iroBCDE, aerobactin and kfu, 66.7% for allS, 45.8% for wcaG, 37.5% for rmpA, 20.8% for pagO and 16.7% for magA. Conclusion From this study, we concluded that the blaKPC and blaNDM co-producing Klebsiella pneumoniae strains have a high diversity and frequency of resistance and virulence genes. This study may offer hospitals important information about the control of infections caused by blaKPC and blaNDM co-producing Klebsiella pneumoniae.
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Affiliation(s)
- Xin Liu
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Jie Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Yini Li
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Qiuni Shen
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Wenting Jiang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Kelei Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, Sichuan 610052, People's Republic of China
| | - Yancheng He
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Penggao Dai
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Zhihao Nie
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Xiyan Xu
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China.,Department of Histology and Embryology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
| | - Yingshun Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, People's Republic of China
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Li J, Zhang H, Ning J, Sajid A, Cheng G, Yuan Z, Hao H. The nature and epidemiology of OqxAB, a multidrug efflux pump. Antimicrob Resist Infect Control 2019; 8:44. [PMID: 30834112 PMCID: PMC6387526 DOI: 10.1186/s13756-019-0489-3] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 02/03/2019] [Indexed: 01/03/2023] Open
Abstract
Background OqxAB efflux pump has been found to mediate multidrug resistance (MDR) in various bacteria over the past decades. The updates on the nature and epidemiology of OqxAB efflux pump need to be fully reviewed to broaden our understanding of this MDR determinant. Methods A literature search using the keyword of "oqxAB" was conducted in the online databases of Pubmed and ISI Web of Science with no restriction on the date of publication. The 87 publications were included into this review as references due to their close relevance to the nature and/or epidemiology of OqxAB efflux pump. Results The oqxAB gene generally locates on chromosome and/or plasmids flanked by IS26-like elements in clinical isolates of Enterobacteriaceae and Klebsiella pneumoniae, conferring low to intermediated resistance to quinoxalines, quinolones tigecycline, nitrofurantoin, several detergents and disinfectants (benzalkonium chloride, triclosan and SDS). It could co-spread with other antimicrobial resistance genes (bla CTX-M, rmtB and aac(6')-Ib etc.), virulence genes and heavy metal resistance genes (pco and sil operons). Both RarA (activator) and OqxR (repressor) play important roles on regulation of the expression of OqxAB. Conclusions The dissemination of oqxAB gene may pose a great risk on food safety and public health. Further investigation and understanding of the natural functions, horizontal transfer, and regulation mechanism of the OqxAB efflux pump will aid in future strategies of antimicrobial usage.
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Affiliation(s)
- Jun Li
- 1National Reference Laboratory of Veterinary Drug Residues (HZAU) and Key Laboratory of the Detection for Veterinary Drug Residues, Wuhan, 430070 Hubei China.,2Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014 Jiangsu China
| | - Heying Zhang
- 1National Reference Laboratory of Veterinary Drug Residues (HZAU) and Key Laboratory of the Detection for Veterinary Drug Residues, Wuhan, 430070 Hubei China
| | - Jianan Ning
- 1National Reference Laboratory of Veterinary Drug Residues (HZAU) and Key Laboratory of the Detection for Veterinary Drug Residues, Wuhan, 430070 Hubei China
| | - Abdul Sajid
- 1National Reference Laboratory of Veterinary Drug Residues (HZAU) and Key Laboratory of the Detection for Veterinary Drug Residues, Wuhan, 430070 Hubei China.,4College of Veterinary Sciences and Animal Husbandry, Abdul Wali Khan University Mardan, Mardan, KP Pakistan
| | - Guyue Cheng
- 3Laboratory of Quality & Safety Risk Assessment for Livestock and Poultry Products (Wuhan), Ministry of Agriculture, P.R China, Wuhan, 430070 Hubei China
| | - Zonghui Yuan
- 1National Reference Laboratory of Veterinary Drug Residues (HZAU) and Key Laboratory of the Detection for Veterinary Drug Residues, Wuhan, 430070 Hubei China.,3Laboratory of Quality & Safety Risk Assessment for Livestock and Poultry Products (Wuhan), Ministry of Agriculture, P.R China, Wuhan, 430070 Hubei China
| | - Haihong Hao
- 1National Reference Laboratory of Veterinary Drug Residues (HZAU) and Key Laboratory of the Detection for Veterinary Drug Residues, Wuhan, 430070 Hubei China.,3Laboratory of Quality & Safety Risk Assessment for Livestock and Poultry Products (Wuhan), Ministry of Agriculture, P.R China, Wuhan, 430070 Hubei China
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Liu BT, Song FJ, Zou M. Characterization of Highly Prevalent Plasmids Coharboringmcr-1,oqxAB, andblaCTX-Mand Plasmids HarboringoqxABandblaCTX-MinEscherichia coliIsolates from Food-Producing Animals in China. Microb Drug Resist 2019; 25:108-119. [DOI: 10.1089/mdr.2017.0391] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Bao-Tao Liu
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, China
- Engineering Technology Research Center of Veterinary Medicine and Diagnostic Reagents of Shandong Province, Qingdao Agricultural University, Qingdao, China
| | - Feng-Jing Song
- Qingdao Academy of Agricultural Sciences, Qingdao, China
| | - Ming Zou
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, China
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Fu L, Wang S, Zhang Z, Yan X, Yang X, Zhang L, Li Y, Wang G, Zhao K, Zhou Y. Co-carrying of KPC-2, NDM-5, CTX-M-3 and CTX-M-65 in three plasmids with serotype O89: H10 Escherichia coli strain belonging to the ST2 clone in China. Microb Pathog 2018; 128:1-6. [PMID: 30576714 DOI: 10.1016/j.micpath.2018.12.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 12/16/2018] [Accepted: 12/17/2018] [Indexed: 01/09/2023]
Abstract
Carbapenem-resistant Enterobacteriaceae strains as a new serious threat for the public health have been increasingly reported worldwide. In this study, one multi-resistant Escherichia coli strain ZSH6 which co-carried blaKPC-2, blaNDM-5 and blaCTX-M, was isolated from human blood sample. By using plasmid conjugation experiments, ZSH6 was found to harbor three plasmids carrying the blaNDM-5 gene, the blaKPC-2 and blaCTX-M gene, respectively. Whole-genome sequencing of ZSH6 yielded 122 scaffolds of chromosomal DNA and three circular plasmids including pZSH6-blaKPC-2 (46,319 bp), pZSH6-blaNDM-5 (46,161bp) and pZSH6-blaCTX-M (184,723). The isolate was classified to Sequence Type 2 and to the O89: H10 serotype. The results of genome analyses revealed that ZSH6 carried three virulence factors (capU, gad and iss) and twenty resistance genes [blaKPC-2blaNDM-5, blaCTX-M-3, blaCTX-M-65, blaTEM-1, floR, tet(A), tet(B), dfrA17, aadA5, sul1, mdf(A), mph(A), erm(B), aph(3')-Ia, aph(3')-Ib, aph(4)-Ia, aph(6)-Id, aac(3)-Iva, aac(3)-IId]. Therefore, the co-existence of such a large number of resistance genes in multiple plasmids making ZSH6 highly resistant to almost all kinds of commonly used antibiotics, and brings a serious challenge for resistance control and clinical treatment of infections caused by this bacterium.
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Affiliation(s)
- Li Fu
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China; Affiliated Hospital of Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Shanmei Wang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China; The People's Hospital of Henan Province, Zhengzhou, 450000, Henan, China
| | - Zhikun Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Xiangjing Yan
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Xingyou Yang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Luhua Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Ying Li
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Guangxi Wang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Kelei Zhao
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, 610052, Sichuan, China.
| | - Yingshun Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China.
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Lu J, Zhang J, Xu L, Liu Y, Li P, Zhu T, Cheng C, Lu S, Xu T, Yi H, Li K, Zhou W, Li P, Ni L, Bao Q. Spread of the florfenicol resistance floR gene among clinical Klebsiella pneumoniae isolates in China. Antimicrob Resist Infect Control 2018; 7:127. [PMID: 30410748 PMCID: PMC6211440 DOI: 10.1186/s13756-018-0415-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 09/27/2018] [Indexed: 11/10/2022] Open
Abstract
Background Florfenicol is a derivative of chloramphenicol that is used only for the treatment of animal diseases. A key resistance gene for florfenicol, floR, can spread among bacteria of the same and different species or genera through horizontal gene transfer. To analyze the potential transmission of resistance genes between animal and human pathogens, we investigated floR in Klebsiella pneumoniae isolates from patient samples. floR in human pathogens may originate from animal pathogens and would reflect the risk to human health of using antimicrobial agents in animals. Methods PCR was used to identify floR-positive strains. The floR genes were cloned, and the minimum inhibitory concentrations (MICs) were determined to assess the relative resistance levels of the genes and strains. Sequencing and comparative genomics methods were used to analyze floR gene-related sequence structure as well as the molecular mechanism of resistance dissemination. Results Of the strains evaluated, 20.42% (67/328) were resistant to florfenicol, and 86.96% (20/23) of the floR-positive strains demonstrated high resistance to florfenicol with MICs ≥512 μg/mL. Conjugation experiments showed that transferrable plasmids carried the floR gene in three isolates. Sequencing analysis of a plasmid approximately 125 kb in size (pKP18-125) indicated that the floR gene was flanked by multiple copies of mobile genetic elements. Comparative genomics analysis of a 9-kb transposon-like fragment of pKP18-125 showed that an approximately 2-kb sequence encoding lysR-floR-virD2 was conserved in the majority (79.01%, 83/105) of floR sequences collected from NCBI nucleotide database. Interestingly, the most similar sequence was a 7-kb fragment of plasmid pEC012 from an Escherichia coli strain isolated from a chicken. Conclusions Identified on a transferable plasmid in the human pathogen K. pneumoniae, the floR gene may be disseminated through horizontal gene transfer from animal pathogens. Studies on the molecular mechanism of resistance gene dissemination in different bacterial species of animal origin could provide useful information for preventing or controlling the spread of resistance between animal and human pathogens.
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Affiliation(s)
- Junwan Lu
- School of Medicine and Health, Lishui University, Lishui, 323000 China
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Jinfang Zhang
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Lei Xu
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Yabo Liu
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Pingping Li
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Tingyuan Zhu
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Cong Cheng
- School of Medicine and Health, Lishui University, Lishui, 323000 China
| | - Shunfei Lu
- School of Medicine and Health, Lishui University, Lishui, 323000 China
| | - Teng Xu
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Huiguang Yi
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Kewei Li
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Wu Zhou
- School of Medicine and Health, Lishui University, Lishui, 323000 China
| | - Peizhen Li
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
| | - Liyan Ni
- The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325035 China
| | - Qiyu Bao
- School of Laboratory Medicine and Life Sciences/Institute of Biomedical Informatics, Wenzhou Medical University, Wenzhou, 325035 China
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Fu L, Tang L, Wang S, Liu Q, Liu Y, Zhang Z, Zhang L, Li Y, Chen W, Wang G, Zhou Y. Co-location of the bla KPC-2, bla CTX-M-65, rmtB and virulence relevant factors in an IncFII plasmid from a hypermucoviscous Klebsiella pneumoniae isolate. Microb Pathog 2018; 124:301-304. [PMID: 30165112 DOI: 10.1016/j.micpath.2018.08.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 07/24/2018] [Accepted: 08/25/2018] [Indexed: 01/05/2023]
Abstract
Hypervirulent variants of klebsiella pneumoniae (hvKP), which cause serious infections not only healthy individuals, but also the immunocompromised patients, have been increasingly reported recently. One conjugation of a hypermucoviscous strian SWU01 co-carried the resistance gene blaKPC-2 and virulence gene iroN by the PCR detection from three carbapenem-resistance hvKP. To know the genetic context of this plasmid. The whole genome of this strain was sequenced. We got a 162,552-bp plasmid (pSWU01) which co-carried the resistance gene blaKPC-2 and virulence gene iroN. It is composed of a typical IncFII-type backbone, five resistance genes including blaCTX-M-65, blaKPC-2, blaSHV-12, blaTEM-1 and rmtB, and several virulence relevant factors including iroN, traT and toxin-antitoxin systems. The plasmid pSWU01 co-carrying the multidrug resistance determinants and virulence relevant factors from the hypermucoviscous K. pneumoniae represents a novel therapeutic challenge.
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Affiliation(s)
- Li Fu
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China; Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Lingtong Tang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China; The First People's Hospital of Yibin, Yibin, 644000, Sichuan, China
| | - Shanmei Wang
- The People's Hospital of Henan Province, Zhengzhou, 450000, Henan, China
| | - Qingye Liu
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China; Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yao Liu
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Zhikun Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - LuHua Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Yin Li
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Wenbi Chen
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - GuangXi Wang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - YingShun Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China.
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Comparative genomics of rmtB-carrying IncI1 ST136 plasmids in avian escherichia coli isolates from chickens in China. Int J Antimicrob Agents 2018; 51:659-662. [DOI: 10.1016/j.ijantimicag.2017.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 09/08/2017] [Accepted: 12/16/2017] [Indexed: 11/20/2022]
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Frequent Tn 2 Misannotation in the Genetic Background of rmtB. Antimicrob Agents Chemother 2017; 61:AAC.00811-17. [PMID: 28559251 DOI: 10.1128/aac.00811-17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Jiang W, Men S, Kong L, Ma S, Yang Y, Wang Y, Yuan Q, Cheng G, Zou W, Wang H. Prevalence of Plasmid-Mediated Fosfomycin Resistance Gene fosA3 Among CTX-M-Producing Escherichia coli Isolates from Chickens in China. Foodborne Pathog Dis 2017; 14:210-218. [PMID: 28379732 DOI: 10.1089/fpd.2016.2230] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The aim of this study was to investigate the prevalence of fosfomycin resistance gene fosA3 and characterize plasmids harboring fosA3 among CTX-M-producing Escherichia coli from chickens in China. A total of 234 CTX-M-producing E. coli isolates collected from chickens from 2014 to 2016 were screened for the presence of plasmid-mediated fosfomycin resistance genes (fosA, fosA3, and fosC2). Clonal relatedness of fosA3-positive isolates was determined by pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). The genetic environment of fosA3 was analyzed by polymerase chain reaction (PCR) mapping. Plasmids were studied by using conjugation experiments, PCR-based replicon typing and plasmid MLST. Sixty-four (27.4%) fosA3-positive E. coli isolates were identified in this study. The gene blaCTX-M-55 (31/64) was predominant among these strains, followed by blaCTX-M-14 (18/64) and blaCTX-M-65 (14/64). Various PFGE patterns and sequence types (STs) indicated that these isolates were clonally unrelated. Seven different genetic environments of fosA3 were identified and two new combinations (ISEcp1-blaCTX-M-65-ΔIS903D-IS26-fosA3-orf1-orf2-Δorf3-IS26 and IS26-ISEcp1-blaCTX-M-3-orf477-blaTEM-1-IS26-fosA3-orf1-orf2-Δorf3-IS26) were discovered for the first time. Conjugation experiments were successful for 47 isolates and 33 transconjugants harbored a single plasmid. Plasmids carrying fosA3 belonged to incompatibility group IncFII (17/33), IncI1 (2/33), IncHI2 (3/33), and IncB/O (1/33). F33:A-:B- plasmids carrying blaCTX-M-55, IncHI2/ST3 plasmids carrying blaCTX-M-65, and F2:A-:B-plasmids carrying blaCTX-M-55 were found in E. coli isolates from different provinces. Our results revealed a considerable prevalence of fosA3 gene among CTX-M-producing E. coli with clonal diversity from chickens in China. The transmission of different kinds of plasmids is responsible for the dissemination of fosA3 in chicken farms in China.
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Affiliation(s)
- Wei Jiang
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Shuai Men
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Linghan Kong
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Suzhen Ma
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Yongqiang Yang
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Yongxiang Wang
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Qiwu Yuan
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Guangyang Cheng
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Wencheng Zou
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China
| | - Hongning Wang
- 1 Key Laboratory of Bio-Resources and Eco-Environment, Ministry of Education, College of Life Science, Sichuan University , Chengdu, China .,2 Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province , Chengdu, China .,3 "985 Project" Science Innovative Platform for Resource and Environment Protection of Southwestern China, Sichuan University , Chengdu, China
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