1
|
Zheng C, Li D, Wang Y, Wang L, Huang Y, Yao J. Risk factors and genetic characteristics of the carriage of hypervirulent and carbapenem-resistant Acinetobacter baumannii among pregnant women. Front Microbiol 2024; 15:1351722. [PMID: 38572236 PMCID: PMC10987950 DOI: 10.3389/fmicb.2024.1351722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 02/16/2024] [Indexed: 04/05/2024] Open
Abstract
Background Carbapenem-resistant Acinetobacter baumannii (CRAB) and its emerging evolutionary branch toward hypervirulence have been neglected in pregnancy. Methods From September 2020 to August 2021, an active surveillance culture program encompassed 138 randomly selected pregnant women, with five subjected to sample collection at two different time points. The clinical characterization was explored through statistical analysis. Whole-genome sequencing, a Galleria mellonella infection model, and a global database were used to investigate the genetic characterization, pathogenicity, evolutionary history, and phylogenetic relationships of the isolates. Results Of the 41 CRAB isolates obtained, they were divided into four ClustersRS and an orphan pattern. ClusterRS 1 (n = 31), with eight complex types in pregnancy, was also the dominant ClusterRS globally, followed by ClusterRS 13 (n = 5), identified as hypervirulent KL49 CRAB, exhibiting phylogeographical specificity to Guangdong. A maternal carriage CRAB rate of 26.09% (36/138) was revealed, with half of the isolates representing novel complex types, prominently including CT3071, as the first KL7 isolates identified in Shenzhen. Both KL49 and KL7 isolates were most commonly found in the same participant, suggesting potential intraspecific competition as a possible reason for CRAB infection without carriers during pregnancy. The independent risk factors for carriers were revealed for the first time, including advanced maternal age, gestational diabetes mellitus, and Group B Streptococcus infection. Conclusion The significant carriage rate and enhanced virulence of CRAB during pregnancy emphasize the imperative for routine surveillance to forestall dissemination within this high-risk group, especially in Guangdong for ClusterRS 13 isolates.
Collapse
Affiliation(s)
- Chao Zheng
- Department of Gastroenterology, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
- Bacteriology and Antibacterial Resistance Surveillance Laboratory, Shenzhen Institute of Respiratory Disease, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, China
- School of Materials and Environmental Engineering, Shenzhen Polytechnic University, Shenzhen, China
| | - Defeng Li
- Department of Gastroenterology, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
| | - Yinglan Wang
- Department of Obstetrics and Gynecology, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
| | - Lisheng Wang
- Department of Gastroenterology, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
| | - Yuting Huang
- Bacteriology and Antibacterial Resistance Surveillance Laboratory, Shenzhen Institute of Respiratory Disease, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
- Department of Head and Neck Surgery, Cancer Hospital Chinese Academy of Medical Sciences Shenzhen Center, Shenzhen, China
| | - Jun Yao
- Department of Gastroenterology, Shenzhen People’s Hospital (The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology), Shenzhen, China
| |
Collapse
|
2
|
Gong G, Chen Q, Luo J, Wang Y, Li X, Zhang F, Zhang Z, Cheng J, Xiong X, Hu R, Zhou Y. Characteristics of a ceftadine/avibatam resistance KPC-33-producing Klebsiella Pneumoniae strain with capsular serotype K19 belonging to ST15. J Glob Antimicrob Resist 2023; 35:159-162. [PMID: 37751846 DOI: 10.1016/j.jgar.2023.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 09/13/2023] [Accepted: 09/16/2023] [Indexed: 09/28/2023] Open
Abstract
OBJECTIVES The aim of this study was to characterize the blaKPC-33 in a ST15-K19 ceftazidime-avibactam (CAZ-AVI)-resistant Klebsiella pneumoniae strain after the antibiotic CAZ-AVI was approved for use in Wuxi No. 2 People's Hospital, China. METHODS Antimicrobial susceptibility testing was performed by the microdilution broth method. Whole genome sequencing (WGS) was performed using PacBio II and MiSeq sequencers. High-quality reads were assembled using the SOAPdenovo and GapCloser v1.12, and genome annotation was performed using the NCBI Prokaryotic Genome Annotation Pipeline (PGAP). Genomic characteristics were analysed by using bioinformatics methods. RESULTS K. pneumoniae strain KPHRJ showed resistance to CAZ-AVI. WGS analysis showed that strain KPHRJ had one 5 536 506 bp chromosome (57.25% G+C content) and one plasmid (133 451 bp, G+C 54.29%). KPHRJ was classified as ST15 and K19 serotype. Resistome analysis showed that KPHRJ carries seven antimicrobial resistance genes (ARGs). WGS analysis and conjugation experiments demonstrated that the blaKPC-33 gene was carried by plasmid pKPHRJ, flanked by two copies of IS26 mobile elements (IS26-ISKpn27-blaKPC-33-ISKpn6-korC-TnAs1-tetR-tetA-Tn3-IS26). Besides these acquired resistance genes, mutations in porin protein-coding genes, such as OmpK36 and OmpK37, which may reduce susceptibility to the CAZ-AVI, were also identified from the genome. CONCLUSION Here, we present the WGS of a CAZ-AVI resistant K. pneumoniae isolate, strain KPHRJ, with capsular serotype K19 and belonging to ST15. CAZ-AVI resistance is likely conferred by a KPC-2 variant, blaKPC-33 and mutations in porin-coding genes. We speculate that the approval of the CAZ-AVI in hospital could contribute to the emergence of these genomic features by providing a selective pressure leading to the emergence of CAZ-AVI resistant bacteria.
Collapse
Affiliation(s)
- Guozhong Gong
- Department of Clinical Laboratory, Suining First People's Hospital, Suining, China
| | - Qiao Chen
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China
| | - Jinjing Luo
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China
| | - Ying Wang
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China
| | - Xingming Li
- The First People's Hospital of Neijiang, Neijiang, China
| | - Feiyang Zhang
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China
| | - Zhikun Zhang
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China
| | - Jialiang Cheng
- Department of Clinical Laboratory, Suining First People's Hospital, Suining, China
| | - Xia Xiong
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China
| | - Renjing Hu
- Department of Laboratory Medicine, Jiangnan University Medical Center, Wuxi, China.
| | - Yingshun Zhou
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, China.
| |
Collapse
|
3
|
Cahill N, Hooban B, Fitzhenry K, Joyce A, O'Connor L, Miliotis G, McDonagh F, Burke L, Chueiri A, Farrell ML, Bray JE, Delappe N, Brennan W, Prendergast D, Gutierrez M, Burgess C, Cormican M, Morris D. First reported detection of the mobile colistin resistance genes, mcr-8 and mcr-9, in the Irish environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162649. [PMID: 36906027 DOI: 10.1016/j.scitotenv.2023.162649] [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: 11/25/2022] [Revised: 03/01/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
The emergence and dissemination of mobile colistin resistance (mcr) genes across the globe poses a significant threat to public health, as colistin remains one of the last line treatment options for multi-drug resistant infections. Environmental samples (157 water and 157 wastewater) were collected in Ireland between 2018 and 2020. Samples collected were assessed for the presence of antimicrobial resistant bacteria using Brilliance ESBL, Brilliance CRE, mSuperCARBA and McConkey agar containing a ciprofloxacin disc. All water and integrated constructed wetland influent and effluent samples were filtered and enriched in buffered peptone water prior to culture, while wastewater samples were cultured directly. Isolates collected were identified via MALDI-TOF, were tested for susceptibility to 16 antimicrobials, including colistin, and subsequently underwent whole genome sequencing. Overall, eight mcr positive Enterobacterales (one mcr-8 and seven mcr-9) were recovered from six samples (freshwater (n = 2), healthcare facility wastewater (n = 2), wastewater treatment plant influent (n = 1) and integrated constructed wetland influent (piggery farm waste) (n = 1)). While the mcr-8 positive K. pneumoniae displayed resistance to colistin, all seven mcr-9 harbouring Enterobacterales remained susceptible. All isolates demonstrated multi-drug resistance and through whole genome sequencing analysis, were found to harbour a wide variety of antimicrobial resistance genes i.e., 30 ± 4.1 (10-61), including the carbapenemases, blaOXA-48 (n = 2) and blaNDM-1 (n = 1), which were harboured by three of the isolates. The mcr genes were located on IncHI2, IncFIIK and IncI1-like plasmids. The findings of this study highlight potential sources and reservoirs of mcr genes in the environment and illustrate the need for further research to gain a better understanding of the role the environment plays in the persistence and dissemination of antimicrobial resistance.
Collapse
Affiliation(s)
- Niamh Cahill
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland.
| | - Brigid Hooban
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Kelly Fitzhenry
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Aoife Joyce
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Louise O'Connor
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Georgios Miliotis
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Francesca McDonagh
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Liam Burke
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Alexandra Chueiri
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - Maeve Louise Farrell
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| | - James E Bray
- Department of Biology, University of Oxford, Oxford, United Kingdom
| | - Niall Delappe
- National Carbapenemase-Producing Enterobacterales Reference Laboratory, National Salmonella, Shigella and Listeria Reference Laboratory, University Hospital Galway, Galway, Ireland
| | - Wendy Brennan
- National Carbapenemase-Producing Enterobacterales Reference Laboratory, National Salmonella, Shigella and Listeria Reference Laboratory, University Hospital Galway, Galway, Ireland
| | - Deirdre Prendergast
- Department of Agriculture, Food and the Marine, Celbridge, Co. Kildare, Ireland
| | | | - Catherine Burgess
- Food Safety Department, Teagasc Food Research Centre, Ashtown, Dublin, Ireland
| | - Martin Cormican
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland; National Carbapenemase-Producing Enterobacterales Reference Laboratory, National Salmonella, Shigella and Listeria Reference Laboratory, University Hospital Galway, Galway, Ireland
| | - Dearbháile Morris
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine, University of Galway, Galway, Ireland; Centre for One Health, Ryan Institute, University of Galway, Galway, Ireland
| |
Collapse
|
4
|
Zhu Y, Dou Q, Du L, Wang Y. QseB/QseC: a two-component system globally regulating bacterial behaviors. Trends Microbiol 2023:S0966-842X(23)00046-X. [PMID: 36849330 DOI: 10.1016/j.tim.2023.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 03/01/2023]
Abstract
QseB/QseC is a two-component system that is involved in the regulation of multiple bacterial behaviors by regulating quorum sensing, bacterial pathogenicity, and antibiotic resistance. Thus, QseB/QseC could provide a target for new antibiotic development. Recently, QseB/QseC has been found to confer survival advantages to environmental bacteria under stress conditions. The molecular mechanistic understanding of QseB/QseC has become an active area of research and revealed some emerging themes, including a deeper understanding of QseB/QseC regulation in different pathogens and environmental bacteria, the functional difference of QseB/QseC among species, and the possibility of analyzing QseB/QseC evolution. Here, we discuss the progression of QseB/QseC studies and describe several unresolved issues and future directions. Resolving these issues is among the challenges of future QseB/QseC studies.
Collapse
Affiliation(s)
- Yuxiang Zhu
- College of Marine Life Sciences, and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China
| | - Qin Dou
- College of Marine Life Sciences, and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China
| | - Liangcheng Du
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Yan Wang
- College of Marine Life Sciences, and Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China.
| |
Collapse
|
5
|
Li Q, Chen Q, Liang S, Wang W, Zhang B, Martín-Rodríguez AJ, Liang Q, Zhang F, Guo L, Xiong X, Hu R, Xiang L, Zhou Y. Coexistence of tmexCD3-toprJ1b tigecycline resistance genes with two novel bla VIM-2-carrying and bla OXA-10-carrying transposons in a Pseudomononas asiatica plasmid. Front Cell Infect Microbiol 2023; 13:1130333. [PMID: 36936768 PMCID: PMC10015498 DOI: 10.3389/fcimb.2023.1130333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 02/06/2023] [Indexed: 03/05/2023] Open
Abstract
Introduction Tigecycline and carbapenems are considered the last line of defense against microbial infections. The co-occurrence of resistance genes conferring resistance to both tigecycline and carbapenems in Pseudomononas asiatica was not investigated. Methods P. asiatica A28 was isolated from hospital sewage. Antibiotic susceptibility testing showed resistance to carbapenem and tigecycline. WGS was performed to analyze the antimicrobial resistance genes and genetic characteristics. Plasmid transfer by conjugation was investigated. Plasmid fitness costs were evaluated in Pseudomonas aeruginosa transconjugants including a Galleria mellonella infection model. Results Meropenem and tigecycline resistant P. asiatica A28 carries a 199, 972 bp long plasmid PLA28.4 which harbors seven resistance genes. Sequence analysis showed that the 7113 bp transposon Tn7389 is made up of a class I integron without a 5'CS terminal and a complete tni module flanked by a pair of 25bp insertion repeats. Additionally, the Tn7493 transposon, 20.24 kp long, with a complete 38-bp Tn1403 IR and an incomplete 30-bp Tn1403 IR, is made up of partial skeleton of Tn1403, a class I integron harboring bla OXA-10, and a Tn5563a transposon. Moreover, one tnfxB3-tmexC3.2-tmexD3b-toprJ1b cluster was found in the plasmid and another one in the the chromosome. Furthermore, plasmid PLA28.4 could be conjugated to P. aeruginosa PAO1, with high fitness cost. Discussion A multidrug-resistant plasmid carrying tmexCD3-toprJ1b and two novel transposons carrying bla VIM-2 and bla OXA-10 -resistant genes was found in hospital sewage, increasing the risk of transmission of antibiotic-resistant genes. These finding highlight the necessary of controlling the development and spread of medication resistance requires continuous monitoring and management of resistant microorganisms in hospital sewage.
Collapse
Affiliation(s)
- Qin Li
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
| | - Qiao Chen
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
| | - Shuang Liang
- Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Wei Wang
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
| | - Bingying Zhang
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
| | | | - Qinghua Liang
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
| | - Feiyang Zhang
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
| | - Ling Guo
- Department of Oral prosthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou, China
| | - Xia Xiong
- Department of Dermatology, The First Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Renjing Hu
- Department of Laboratory Medicine, Jiangnan University Medical Center, Wuxi, China
- *Correspondence: Yingshun Zhou, ; Renjing Hu, ; Li Xiang,
| | - Li Xiang
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
- *Correspondence: Yingshun Zhou, ; Renjing Hu, ; Li Xiang,
| | - Yingshun Zhou
- Department of Pathogen Biology, School of Basic Medicine, Southwest Medical University, Luzhou, China
- Public Center of Experimental of Pathogen Biology Platform, Southwest Medical University, Luzhou, China
- *Correspondence: Yingshun Zhou, ; Renjing Hu, ; Li Xiang,
| |
Collapse
|
6
|
Mmatli M, Mbelle NM, Osei Sekyere J. Global epidemiology, genetic environment, risk factors and therapeutic prospects of mcr genes: A current and emerging update. Front Cell Infect Microbiol 2022; 12:941358. [PMID: 36093193 PMCID: PMC9462459 DOI: 10.3389/fcimb.2022.941358] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/01/2022] [Indexed: 12/28/2022] Open
Abstract
Background Mobile colistin resistance (mcr) genes modify Lipid A molecules of the lipopolysaccharide, changing the overall charge of the outer membrane. Results and discussion Ten mcr genes have been described to date within eleven Enterobacteriaceae species, with Escherichia coli, Klebsiella pneumoniae, and Salmonella species being the most predominant. They are present worldwide in 72 countries, with animal specimens currently having the highest incidence, due to the use of colistin in poultry for promoting growth and treating intestinal infections. The wide dissemination of mcr from food animals to meat, manure, the environment, and wastewater samples has increased the risk of transmission to humans via foodborne and vector-borne routes. The stability and spread of mcr genes were mediated by mobile genetic elements such as the IncHI2 conjugative plasmid, which is associated with multiple mcr genes and other antibiotic resistance genes. The cost of acquiring mcr is reduced by compensatory adaptation mechanisms. MCR proteins are well conserved structurally and via enzymatic action. Thus, therapeutics found effective against MCR-1 should be tested against the remaining MCR proteins. Conclusion The dissemination of mcr genes into the clinical setting, is threatening public health by limiting therapeutics options available. Combination therapies are a promising option for managing and treating colistin-resistant Enterobacteriaceae infections whilst reducing the toxic effects of colistin.
Collapse
Affiliation(s)
- Masego Mmatli
- Department of Medical Microbiology, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - Nontombi Marylucy Mbelle
- Department of Medical Microbiology, School of Medicine, University of Pretoria, Pretoria, South Africa
| | - John Osei Sekyere
- Department of Medical Microbiology, School of Medicine, University of Pretoria, Pretoria, South Africa
- Department of Microbiology and Immunology, Indiana University School of Medicine-Northwest, Gary, IN, United States
- Department of Dermatology, School of Medicine, University of Pretoria, Pretoria, South Africa
- *Correspondence: John Osei Sekyere, ;
| |
Collapse
|
7
|
Cao Z, Cui L, Liu Q, Liu F, Zhao Y, Guo K, Hu T, Zhang F, Sheng X, Wang X, Peng Z, Dai M. Phenotypic and Genotypic Characterization of Multidrug-Resistant Enterobacter hormaechei Carrying qnrS Gene Isolated from Chicken Feed in China. Microbiol Spectr 2022; 10:e0251821. [PMID: 35467399 PMCID: PMC9241693 DOI: 10.1128/spectrum.02518-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/27/2022] [Indexed: 11/20/2022] Open
Abstract
Multidrug resistance (MDR) in Enterobacteriaceae including resistance to quinolones is rising worldwide. The plasmid-mediated quinolone resistance (PMQR) gene qnrS is prevalent in Enterobacteriaceae. However, the qnrS gene is rarely found in Enterobacter hormaechei (E. hormaechei). Here, we reported one multidrug resistant E. hormaechei strain M1 carrying the qnrS1 and blaTEM-1 genes. This study was to analyze the characteristics of MDR E. hormaechei strain M1. The E. hormaechei strain M1 was identified as Enterobacter cloacae complex by biochemical assay and 16S rRNA sequencing. The whole genome was sequenced by the Oxford Nanopore method. Taxonomy of the E. hormaechei was based on multilocus sequence typing (MLST). The qnrS with the other antibiotic resistance genes were coexisted on IncF plasmid (pM1). Besides, the virulence factors associated with pathogenicity were also located on pM1. The qnrS1 gene was located between insertion element IS2A (upstream) and transposition element ISKra4 (downstream). The comparison result of IncF plasmids revealed that they had a common plasmid backbone. Susceptibility experiment revealed that the E. hormaechei M1 showed extensive resistance to the clinical antimicrobials. The conjugation transfer was performed by filter membrane incubation method. The competition and plasmid stability assays suggested the host bacteria carrying qnrS had an energy burden. As far as we know, this is the first report that E. hormaechei carrying qnrS was isolated from chicken feed. The chicken feed and poultry products could serve as a vehicle for these MDR bacteria, which could transfer between animals and humans through the food chain. We need to pay close attention to the epidemiology of E. hormaechei and prevent their further dissemination. IMPORTANCE Enterobacter hormaechei is an opportunistic pathogen. It can cause infections in humans and animals. Plasmid-mediated quinolone resistance (PMQR) gene qnrS can be transferred intergenus, which is leading to increase the quinolone resistance levels in Enterobacteriaceae. Chicken feed could serve as a vehicle for the MDR E. hormaechei. Therefore, antibiotic-resistance genes (ARGs) might be transferred to the intestinal flora after entering the gastrointestinal tract with the feed. Furthermore, antibiotic-resistant bacteria (ARB) were also excreted into environment with feces, posing a huge threat to public health. This requires us to monitor the ARB and antibiotic-resistant plasmids in the feed. Here, we demonstrated the characteristics of one MDR E. hormaechei isolate from chicken feed. The plasmid carrying the qnrS gene is a conjugative plasmid with transferability. The presence of plasmid carrying antibiotic-resistance genes requires the maintenance of antibiotic pressure. In addition, the E. hormaechei M1 belonged to new sequence type (ST). These data show the MDR E. hormaechei M1 is a novel strain that requires our further research.
Collapse
Affiliation(s)
- Zhengzheng Cao
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Luqing Cui
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Quan Liu
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Fangjia Liu
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Yue Zhao
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Kaixuan Guo
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Tianyu Hu
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Fan Zhang
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Xijing Sheng
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| | - Xiangru Wang
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Zhong Peng
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
| | - Menghong Dai
- The Cooperative Innovation Center for Sustainable Pig Production, Huazhong Agricultural University, Wuhan, China
- MOA Key Laboratory of Food Safety Evaluation/National Reference Laboratory of Veterinary Drug Residue (HZAU), Huazhong Agricultural University, Wuhan, China
| |
Collapse
|
8
|
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.
Collapse
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,
| |
Collapse
|
9
|
Dong H, Li Y, Cheng J, Xia Z, Liu W, Yan T, Chen F, Wang Z, Li R, Shi J, Qin S. Genomic Epidemiology Insights on NDM-Producing Pathogens Revealed the Pivotal Role of Plasmids on blaNDM Transmission. Microbiol Spectr 2022; 10:e0215621. [PMID: 35225688 PMCID: PMC9049954 DOI: 10.1128/spectrum.02156-21] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/30/2022] [Indexed: 12/14/2022] Open
Abstract
Incidences of nosocomial infections mediated by New Delhi metallo-β-lactamase (NDM) enzyme-producing Enterobacterales are increasing globally, resulting in a great burden to public health. The carbapenem-resistant Enterobacterales (CRE) were collected from Henan, China during 2013-2016. The blaNDM-positive strains were characterized using PCR, antimicrobial susceptibility testing, conjugation assay, S1 nuclease pulsed-field gel electrophoresis (S1-PFGE), Southern blot, whole-genome sequencing (WGS), and bioinformatics analysis. Eighty-one NDM-producing strains were identified among 391 nonduplicate CRE strains. Among them, four strains cocarried mcr and blaNDM genes, and two carried blaIMP-4 and blaNDM genes. The coexistence of blaNDM-5 and mcr-9 in Enterobacter hormaechei was found for the first time. In total, four blaNDM subtypes were identified. Among them, blaNDM-1 and blaNDM-5 were predominant. There was an obvious increasing trend in blaNDM-5 from 2013 to 2016. Thirteen different bacterial species were found among the 81 strains, and Escherichia coli was the dominant strain. blaNDM genes were located on nine different Inc-type plasmids, most of them on the IncX3 plasmids, except for the Pr-15-2-50 strain, which was located on the chromosome. We characterized two novel plasmids: the IncHI5-like plasmid carrying blaNDM-9 found in K. pneumonia, and the IncI1 blaNDM-5-positive plasmid. These findings provide the genomic basis for the widespread transmission of blaNDM and pave the way for the formulation of more effective monitoring and control methods. IMPORTANCE To control the emergence and transmission of CRE, it is important to perform retrospective genomic investigations. It is important to evaluate the plasmid diversity, genetic environment, and evolutionary relationships of the blaNDM-positive clinical strains in the early transmission stages. This study conducted an in-depth analysis of blaNDM-positive pathogens during a 4-year period using different methods for observing the high prevalence and active transmission of blaNDM-positive CRE. Moreover, we also explored the coexistence of the blaNDM and mcr, a clinically important mobile colistin resistance gene. This study shows that the prevalence of blaNDM-positive pathogens in Henan is high and the isolation rates increase each year. Moreover, plasmid-mediated horizontal transfer plays an important role in blaNDM dissemination. The co-occurrence of multiple resistance genes highlighted a long-lasting evolutionary pathway. Therefore, we have suggested the long-term continuous surveillance of clinical pathogens carrying blaNDM to learn the future transmission trend and curb the public health risk caused by CRE.
Collapse
Affiliation(s)
- Huiyue Dong
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Yan Li
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jing Cheng
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Ziwei Xia
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Wentian Liu
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Tingting Yan
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Fangfang Chen
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Zhiqiang Wang
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Ruichao Li
- Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
- Institute of Comparative Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jinjin Shi
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| | - Shangshang Qin
- School of Pharmaceutical Sciences, Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, Zhengzhou University, Zhengzhou, Henan, China
| |
Collapse
|
10
|
Comparison of Two Distinct Subpopulations of Klebsiella pneumoniae ST16 Co-Occurring in a Single Patient. Microbiol Spectr 2022; 10:e0262421. [PMID: 35467408 PMCID: PMC9241866 DOI: 10.1128/spectrum.02624-21] [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: 12/17/2022] Open
Abstract
The higher resistance rate to ceftazidime-avibactam (CZA) is mainly related to carbapenem resistance, especially New Delhi metallo-β-lactamase (NDM). The CZA-susceptible Klebsiella pneumoniae (K191663) and the later CZA-resistant isolates (K191724, K191725, K191773) co-producing NDM-4 and OXA-181 were obtained from the same hospitalized patient returning from Vietnam. Our study aims to elucidate the diversity of K. pneumoniae ST16 through comparative analysis of whole-genome sequencing (WGS) data and identify the potential evolution of plasmids by sequencing longitudinal clinical isolates during antibiotic treatment. Firstly, multilocus sequence typing analysis and phylogenic analysis suggested that these strains belong to the two lineages of K. pneumoniae ST16. Surprisingly, the CZA-resistant strains were closely related to K. pneumoniae ST16 described in South Korea, instead of the blaNDM-4- or blaOXA-181-carrying ST16 reported in Vietnam. Secondly, blaNDM-4, blaTEM-1B, and rmtB co-existed on a self-conjugative IncFII(Yp)-like plasmid, which played a significant role in CZA resistance. It could transfer into the recipient Escherichia coli J53 at high frequency, indicating the risk of mobile carbapenemases. In addition, the loss of 12-kbp fragment occurred in blaNDM-4-positive isolate (K191773), which was likely caused by insertion sequence-mediated homologous recombination. Last but not least, as a repressor of acrAB operon system, acrR was truncated by a frameshift mutation in K191663. Thus, our study provided baseline information for monitoring the occurrence and development of bacterial resistance. IMPORTANCE As a leading health care-acquired infection pathogen, Klebsiella pneumoniae is threatening a large number of inpatients due to its diverse antibiotic resistance and virulence factors. Heretofore, with a growing number of reports about the coexistence of several carbapenemases in carbapenem-resistant K. pneumoniae (CRKP), epidemiologic surveillance has been strengthened. Nevertheless, the nosocomial outbreaks by CRKP ST16 are gradually increasing worldwide. Our study provides a deeper insight into the diversification of clinical isolates of CRKP ST16 in China. In addition, the comparison analysis of resistant plasmids may reveal the transmission of carbapenemase-encoding genes. Furthermore, our study also highlights the importance of longitudinal specimen collection and continuous monitoring during the treatment, which play a crucial role in understanding the development of antibiotic resistance and the evolution of resistance plasmids.
Collapse
|
11
|
Huang L, Fu L, Hu X, Liang X, Gong G, Xie C, Zhang F, Wang Y, Zhou Y. Co-occurrence of Klebsiella variicola and Klebsiella pneumoniae Both Carrying bla KPC from a Respiratory Intensive Care Unit Patient. Infect Drug Resist 2021; 14:4503-4510. [PMID: 34744441 PMCID: PMC8565889 DOI: 10.2147/idr.s330977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/08/2021] [Indexed: 12/28/2022] Open
Abstract
Objective The aim of this study was to use whole-genome sequencing to characterize Klebsiella pneumoniae SKp2F and Klebsiella variicola SKv2E, both carrying blaKPC, co-isolated from the same sputum specimen. Methods Antimicrobial susceptibility testing was performed using microbroth dilution. Biofilm formation was determined by crystal violet staining and virulence was measured by a serum killing assay. Whole-genome sequencing of SKp2F and SKv2E was performed using an Illumina sequencer and the genetic characteristics were analyzed by computer. Results SKp2F and SKv2E were sensitive only to tigecycline and polymyxin among the tested antibiotics. The biofilm-forming ability of SKv2E is stronger than that of SKp2F. The grades of serum resistance of SKp2F and SKv2E are 4 and 3. MLST analysis of the 6,115,610 bp and 5,403,687 bp of SKv2E and SKp2F showed associations with ST1615 and ST631, respectively. SKv2E carried 13 resistance genes (blaKPC-2, blaTEM-1A, blaLEN17, aadA16, arr-3, qnrB4, oqxA/B, dfrA27, sul1, tetD, fosA, qacEΔ1) and SKp2F carried 23 (blaKPC-2, blaCTX-M-3, blaTEM-1B, blaCTX-M-65, blaSHV-27, aac(6ʹ)-IIa, rmtB, arr-3, aph(3ʹ)-Ia, aadA16, qnrS1, aac(6ʹ)-Ib-cr, qnrB91, oqxA/B, mph(A), tet(A), fosA, dfrA27, and two copies of qacEΔ1-sul1). Most of them were carried by various mobile genetic elements, such as IncFIB(K)/IncFII(K)/IncFII(Yp), IncFII(K) plasmid, Tn6338, and In469. Both SKv2E and SKp2F carried a large number of virulence factors, including type 1 and 3 fimbriae, capsule, aerobactin (iutA), ent siderophore (entABCDEFS, fepABCDGfes), and salmochelin (iroE/iroEN). SKv2E also carried type IV pili (pilW), fimbrial adherence (steB, stfD), and capsule biosynthesis gene (glf). Conclusion blaKPC-2-carrying K. variicola and K. pneumoniae, which carried multiple resistance genes, virulence factors, and highly similar mobile genetic elements, were identified from the same specimen, indicating that clinical samples may carry multiple bacteria. We should avoid misidentification, and bear in mind that resistance genes carrying mobile genetic elements can be transmitted or integrated between bacteria in the same host.
Collapse
Affiliation(s)
- Lianjiang Huang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, 361021, People's Republic of China
| | - Li Fu
- The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Xiaoyan Hu
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Xiaoliang Liang
- Department of Clinical Laboratory, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, 361021, People's Republic of China
| | - Guozhong Gong
- Department of Clinical Laboratory, Suining First People's Hospital, Suining, 629000, People's Republic of China
| | - Chunhong Xie
- Department of Clinical Laboratory, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, 361021, People's Republic of China
| | - Feiyang Zhang
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Ying Wang
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, 646000, People's Republic of China
| | - Yingshun Zhou
- Department of Pathogen Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology Technology Platform, Southwest Medical University, Luzhou, 646000, People's Republic of China
| |
Collapse
|
12
|
Hu R, Li Q, Zhang F, Ding M, Liu J, Zhou Y. Characterisation of bla NDM-5 and bla KPC-2 co-occurrence in K64-ST11 carbapenem-resistant Klebsiella pneumoniae. J Glob Antimicrob Resist 2021; 27:63-66. [PMID: 34482020 DOI: 10.1016/j.jgar.2021.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/01/2021] [Accepted: 08/19/2021] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES The aim of this study was to characterise the co-occurrence of blaKPC and blaNDM in a K64-ST11 carbapenem-resistant Klebsiella pneumoniae strain. METHODS Antimicrobial susceptibility was determined by the disk diffusion method. Whole-genome sequencing was performed using Illumina MiSeq and PacBio II sequencers. High-quality reads were de novo assembled using the SOAPdenovo package. Genome annotation was performed using the NCBI Prokaryotic Genome Annotation Pipeline (PGAP), and genome characteristics were analysed using bioinformatics methods. RESULTS Klebsiella pneumoniae strain KPWX136 was resistant to most of the tested antibiotics, being susceptible only to polymyxin B and tigecycline. The genome of strain KPWX136 is composed of a single chromosome (5 473 976 bp) and six plasmids including pA (191 359 bp), pB (134 972 bp), pC (117 844 bp), pD (87 095 bp), pE (11 970 bp) and pF (5596 bp). Complete sequence analysis revealed the resistome of isolate KPWX136, which included blaKPC-2 and blaNDM-5 together with 23 other resistance genes, of which 6 resistance genes were located on the chromosome and 19 on plasmids. Virulome analysis showed that KPWX136 carried a large number of virulence-associated genes. Meanwhile, 26 genomic islands and 6 prophages were predicted within the genome. CONCLUSION Genetic characterisation of K. pneumoniae KPWX136 co-harbouring blaNDM-5 and blaKPC-2 showed that it carried not only 25 resistance genes and a large number virulence factors but also various mobile genetic elements (MGEs) such as plasmids and genomic islands. Therefore, we must be alert to the transmission of resistance genes and virulence determinants via MGEs.
Collapse
Affiliation(s)
- Renjing Hu
- Department of Laboratory Medicine, the Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Qin Li
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Feiyang Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Manlin Ding
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China
| | - Jun Liu
- Department of Laboratory Medicine, the Fifth People's Hospital of Wuxi, affiliated to Jiangnan University, Wuxi, Jiangsu, China.
| | - Yingshun Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Southwest Medical University, Luzhou, Sichuan, China.
| |
Collapse
|
13
|
Rodríguez-Santiago J, Cornejo-Juárez P, Silva-Sánchez J, Garza-Ramos U. Polymyxin resistance in Enterobacterales: overview and epidemiology in the Americas. Int J Antimicrob Agents 2021; 58:106426. [PMID: 34419579 DOI: 10.1016/j.ijantimicag.2021.106426] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/07/2021] [Accepted: 08/15/2021] [Indexed: 12/30/2022]
Abstract
The worldwide spread of carbapenem- and polymyxin-resistant Enterobacterales represents an urgent public-health threat. However, for most countries in the Americas, the available data are limited, although Latin America has been suggested as a silent spreading reservoir for isolates carrying plasmid-mediated polymyxin resistance mechanisms. This work provides an overall update on polymyxin and polymyxin resistance and focuses on uses, availability and susceptibility testing. Moreover, a comprehensive review of the current polymyxin resistance epidemiology in the Americas is provided. We found that reports in the English and Spanish literature show widespread carbapenemase-producing and colistin-resistant Klebsiella pneumoniae in the Americas determined by the clonal expansion of the pandemic clone ST258 and mgrB-mediated colistin resistance. In addition, widespread IncI2 and IncX4 plasmids carrying mcr-1 in Escherichia coli come mainly from human sources; however, plasmid-mediated colistin resistance in the Americas is underreported in the veterinary sector. These findings demonstrate the urgent need for the implementation of polymyxin resistance surveillance in Enterobacterales as well as appropriate regulatory measures for antimicrobial use in veterinary medicine.
Collapse
Affiliation(s)
- J Rodríguez-Santiago
- Instituto Nacional de Salud Pública (INSP), Centro de Investigación sobre Enfermedades Infecciosas (CISEI), Laboratorio de Resistencia Bacteriana, Cuernavaca, Morelos, México; Programa de Doctorado en Ciencias Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - P Cornejo-Juárez
- Departamento de Infectología, Instituto Nacional de Cancerología (INCan), Ciudad de México, México
| | - J Silva-Sánchez
- Instituto Nacional de Salud Pública (INSP), Centro de Investigación sobre Enfermedades Infecciosas (CISEI), Laboratorio de Resistencia Bacteriana, Cuernavaca, Morelos, México
| | - U Garza-Ramos
- Instituto Nacional de Salud Pública (INSP), Centro de Investigación sobre Enfermedades Infecciosas (CISEI), Laboratorio de Resistencia Bacteriana, Cuernavaca, Morelos, México.
| |
Collapse
|
14
|
Li O, Zhang H, Wang W, Liang Y, Chen W, Din AU, Li L, Zhou Y. Complete genome sequence and probiotic properties of Lactococcus petauri LZys1 isolated from healthy human gut. J Med Microbiol 2021; 70. [PMID: 34397349 DOI: 10.1099/jmm.0.001397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Introduction. Lactococcus petauri LZys1 (L. petauri LZys1) is a type of lactic acid bacteria (LAB), which was initially isolated from healthy human gut.Hypothesis/Gap Statement. It was previously anticipated that L. petauri LZys1 has potential characteristics of probiotic properties. The genetic structure and the regulation functions of L. petauri LZys1 need to be better revealed.Aim. The aim of this study was to detect the probiotic properties L. petauri LZys1 and to reveal the genome information related to its genetic adaptation and probiotic profiles.Methodology. Multiple in vitro experiments were carried out to evaluate its lactic acid-producing ability, resistance to pathogenic bacterial strains, auto-aggregation and co-aggregation ability, and so on. Additionally, complete genome sequencing, gene annotation, and probiotic associated gene analysis were performed.Results. The complete genome of L. petauri LZys1 comprised of 1 985 765 bp, with a DNA G+C content of 38.07 %, containing 50 tRNA, seven rRNA, and four sRNA. A total of 1931 genes were classified into six functional categories by Kyoto Encyclopaedia of Genes and Genomes (KEGG) database. The neighbour-joining phylogeny tree based on the whole genome of L. petauri LZys1 and other probiotics demonstrated that L. petauri LZys1 has a significant similarity to Lactococcus garvieae. The functional genes were detected to expound the molecular mechanism and biochemical processes of its potential probiotic properties, such as atpB gene.Conclusion. All the results described in this study, together with relevant information previously reported, made L. prtauri LZys1 a very interesting potential strain to be considered as a prominent candidate for probiotic use.
Collapse
Affiliation(s)
- Ouyang Li
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China.,Faculty of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| | - Huijian Zhang
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China.,Faculty of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| | - Wenjing Wang
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China.,Faculty of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| | - Yuxin Liang
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China.,Faculty of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| | - Wenbi Chen
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China.,Faculty of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| | - Ahmad Ud Din
- Drug Discovery Research Center, Southwest Medical University, Luzhou, PR China
| | - Li Li
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| | - Yingshun Zhou
- Department of Pathogenic Biology, School of Basic Medicine, Public Center of Experimental Technology of Pathogen Biology technology platform, Southwest Medical University, Luzhou, Sichuan 646000, PR China
| |
Collapse
|