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Umeda K, Anraku M, Yamaguchi T, Nakamura H, Kawahara R. Genetic characterization of KHM-1 metallo-β-lactamase-producing Enterobacterales isolates from inpatient sources in Osaka, Japan. J Glob Antimicrob Resist 2024:S2213-7165(24)00045-6. [PMID: 38430961 DOI: 10.1016/j.jgar.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 02/04/2024] [Accepted: 02/15/2024] [Indexed: 03/05/2024] Open
Abstract
OBJECTIVES KHM-1-metallo-β-lactamase-producing Enterobacterales strains, of which only a few have been found, were isolated from four inpatients in Osaka, Japan during 2016-2020. We compared whole genomes of the four KHM-1-producing isolates, including one Enterobacter hormaechei subsp. hoffmannii, one Escherichia coli, and two Citrobacter freundii. METHODS These isolates were characterized by whole-genome sequencing, comparative analysis of blaKHM-1-encoding plasmids with earlier reported plasmids, and antimicrobial susceptibility tests. RESULTS Multilocus sequence typing classified the E. hormaechei subsp. hoffmannii isolate to ST78, the E. coli isolate to ST354, and the two C. freundii isolates to ST95. These isolates harbored various antimicrobial resistance genes aside from blaKHM-1 on their chromosomes and plasmids. In all four isolates, blaKHM-1 was located on 137 kbp to 213 kbp plasmids of IncC replicon type. Although there were common resistance genes such as blaKHM-1-ISEc68, class I integron cassette, and fosG, the four blaKHM-1-encoding plasmids were distinguishable into two lineages based on differences of the resistance gene components and their surrounding regions. CONCLUSION Because no epidemiological contact was observed among the inpatients, the blaKHM-1-encoding IncC plasmids might have spread horizontally to multiple bacterial species through repeated recombination and insertion.
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Affiliation(s)
- Kaoru Umeda
- Division of Microbiology, Bacteriology section, Osaka Institute of Public Health, 1-3-3, Nakamichi, Higashinari-ku, Osaka, Japan, 537-8511.
| | - Masaki Anraku
- Division of Microbiology, Bacteriology section, Osaka Institute of Public Health, 1-3-3, Nakamichi, Higashinari-ku, Osaka, Japan, 537-8511
| | - Takahiro Yamaguchi
- Division of Microbiology, Bacteriology section, Osaka Institute of Public Health, 1-3-3, Nakamichi, Higashinari-ku, Osaka, Japan, 537-8511
| | - Hiromi Nakamura
- Division of Microbiology, Bacteriology section, Osaka Institute of Public Health, 1-3-3, Nakamichi, Higashinari-ku, Osaka, Japan, 537-8511
| | - Ryuji Kawahara
- Division of Microbiology, Bacteriology section, Osaka Institute of Public Health, 1-3-3, Nakamichi, Higashinari-ku, Osaka, Japan, 537-8511
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Yamaguchi T, Yokota M, Jinnai M, Minh DTN, Hoang ON, Le Thi H, Thanh PN, Hoang Hoai P, Nguyen Do P, Van CD, Motooka D, Nakamura S, Kawahara R, Kumeda Y, Hase A, Nakayama T. Detection of chromosome-mediated bla NDM-1-carrying Aeromonas spp. in the intestinal contents of fresh water river fish in Ho Chi Minh City, Vietnam. Mar Pollut Bull 2024; 198:115812. [PMID: 38043208 DOI: 10.1016/j.marpolbul.2023.115812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/05/2023]
Abstract
The spread of antibiotic-resistant bacteria is a global problem that should be addressed through the perspective of the "one health" concept. The purpose of this study was to determine the contamination rate of antibiotic-resistant Aeromonas spp. in fresh water river fish purchased from a fish market in Vietnam. We then defined the pattern of antibiotic resistance to assess antibiotic-resistant contamination. Antibiotic-resistant Aeromonas spp. were detected in the intestinal contents of 32 of 80 fish. blaNDM-1 was detected in seven strains. Extended-spectrum β-lactamase and AmpC β-lactamase-related genes were detected in 28 strains, including blaCTX-M-55, blaCTX-M-15, blaCTX-M-1, and blaDHA,blaFOX, and blaMOX. The blaNDM-1 detected in the seven Aeromonas spp. strains were found chromosomally. This finding suggests that the blaNDM gene is stable in the natural environment and may spread widely into animals and humans via Aeromonas spp. with a transposon. Our results suggest the importance of continuing to monitor carbapenemase genes in Aeromonas spp. to evaluate the possibility that they may spread in other Enterobacterales, and to elucidate the mechanism of spread.
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Affiliation(s)
| | - Masaharu Yokota
- Division of Microbiology Osaka Institute of Public Health, Osaka, Japan
| | - Michio Jinnai
- Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan
| | | | | | - Hien Le Thi
- Institute of Public Health, Ho Chi Minh City, Viet Nam
| | | | | | | | | | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Shota Nakamura
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Ryuji Kawahara
- Division of Microbiology Osaka Institute of Public Health, Osaka, Japan
| | | | | | - Tatsuya Nakayama
- Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan.
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Furugaito M, Anraku M, Kawahara R, Hisato A, Kamisako T, Yoshida K. First report of New Delhi metallo-β-lactamase-1-producing Acinetobacter soli in Japan. J Infect Chemother 2023; 29:1177-1180. [PMID: 37482191 DOI: 10.1016/j.jiac.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/13/2023] [Accepted: 07/20/2023] [Indexed: 07/25/2023]
Abstract
New Delhi metallo-β-lactamase (NDM)-producing gram-negative rods, including Acinetobacter species, are a global problem but have rarely been isolated in Japan. To our knowledge, this is the first study to isolate an NDM-1-producing Acinetobacter soli strain, KUH106, in Japan. We analyzed this strain using next-generation sequencing to examine the plasmid carrying NDM-1. This plasmid, named pKUH106_NDM1, is 41,135 bp in length and contains genetic contexts with the structure ISAba14-aph(3')-VI-ISAba125-blaNDM-1ble-MBL. Comparative analysis of the plasmid revealed that it resembled the plasmids of Acinetobacter detected in various countries, such as the A. soli isolate from Taiwan and the Acinetobacter baumannii isolate from a healthcare facility in Osaka Prefecture, Japan. These results suggest that blaNDM-1 may spread via this plasmid in Acinetobacter species. This phenomenon needs to be confirmed through the genetic analysis of A. baumannii and other carbapenem-resistant Acinetobacter species. In particular, blaNDM-1 and other resistance genes must be investigated, and the spread of these genes in the community must be cautioned.
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Affiliation(s)
- Michiko Furugaito
- Department of Clinical Laboratory, Kindai University Hospital, 377-2, Ohno-Higashi, OsakaSayama, Osaka, 589-8511, Japan.
| | - Masaki Anraku
- Division of Microbiology, Bacteriology Section, Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka-shi, Osaka, 537-0025, Japan
| | - Ryuji Kawahara
- Division of Microbiology, Bacteriology Section, Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka-shi, Osaka, 537-0025, Japan
| | - Akihiro Hisato
- Division of Infection Control and Prevention, Department of Medical safety management, Kindai University Hospital, 377-2, Ohno-Higashi, OsakaSayama, Osaka, 589-8511, Japan
| | - Toshinori Kamisako
- Department of Clinical Laboratory Medicine, Kindai University Faculty of Medicine, 377-2, Ohno-Higashi, OsakaSayama, Osaka, 589-8511, Japan
| | - Koichiro Yoshida
- Division of Infection Control and Prevention, Department of Medical safety management, Kindai University Hospital, 377-2, Ohno-Higashi, OsakaSayama, Osaka, 589-8511, Japan
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4
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Thanh Hoang HT, Yamamoto M, Calvopina M, Bastidas-Caldes C, Khong DT, Nguyen TN, Kawahara R, Yamaguchi T, Yamamoto Y. Comparative genome analysis of colistin-resistant Escherichia coli harboring mcr isolated from rural community residents in Ecuador and Vietnam. PLoS One 2023; 18:e0293940. [PMID: 37917755 PMCID: PMC10621974 DOI: 10.1371/journal.pone.0293940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 10/21/2023] [Indexed: 11/04/2023] Open
Abstract
The spread of colistin-resistant bacteria among rural community residents of low- and middle-income countries is a major threat to community health. Although the mechanism of the spread of colistin-resistant bacteria in communities is unknown, geographic and regional characteristics may influence it. To elucidate the spread mechanism of colistin-resistant bacteria, we analyzed the genomes of colistin-resistant Escherichia coli isolated from Vietnam and Ecuador residents, which are geographically and socially different. Stool specimens of 139 and 98 healthy residents from Ecuador and Vietnam rural communities, respectively, were analyzed for colistin-resistant E. coli with mcr. Its prevalence in the residents of all the communities assessed was high and approximately equal in both countries: 71.8% in Ecuador and 69.4% in Vietnam. A phylogenetic tree analysis revealed that the sequence type of colistin-resistant E. coli was diverse and the major sequence types were different between the two countries. The location of mcr in the isolates showed that the proportion of chromosomal mcr was 35.1% and 8.5% in the Vietnam and Ecuador isolates, respectively. Most of these chromosomal mcr genes (75%-76%) had an intact mcr-transposon Tn6330. Contrastingly, the replicon types of the mcr-carrying-plasmids were diverse in both countries, but almost all belonged to IncI2 in Ecuador and IncX1/X4 in Vietnam. Approximately 26%-45% of these mcr-plasmids had other resistance genes, which also varied between countries. These results suggest that although the overall profile of the colistin-resistant E. coli isolates is diverse in these countries, the phylogenesis of the isolates and mcr-carrying plasmids has regional characteristics. Although the contributing factors are not clear, it is obvious that the overall profile of colistin-resistant bacteria dissemination varies between countries. Such different epidemic patterns are important for establishing country-specific countermeasures against colistin-resistant bacteria.
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Affiliation(s)
- Hoa Thi Thanh Hoang
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Mayumi Yamamoto
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
- Health Administration Center, Gifu University, Gifu, Japan
| | - Manuel Calvopina
- One Health Research Group, Universidad De Las Americas, Quito, Ecuador
| | | | - Diep Thi Khong
- Center for Medical and Pharmaceutical Research and Service, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Thang Nam Nguyen
- Center for Medical and Pharmaceutical Research and Service, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Takahiro Yamaguchi
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Yoshimasa Yamamoto
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
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Kakimoto K, Nishiki S, Kaga Y, Harada T, Kawahara R, Takahashi H, Ueda E, Koshimo N, Ito H, Matsui T, Oishi K, Yamagishi T. Effectiveness of patient and staff cohorting to reduce the risk of vancomycin-resistant enterococcus (VRE) acquisition: a retrospective cohort study during a VRE outbreak in Japan. J Hosp Infect 2023; 134:35-42. [PMID: 36669647 DOI: 10.1016/j.jhin.2022.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/18/2022] [Accepted: 11/26/2022] [Indexed: 01/19/2023]
Abstract
BACKGROUND Patient and staff cohorting is part of a bundle approach in the response to multi-drug-resistant organisms, but its effectiveness is not fully clarified. This study compared the risks of acquiring vancomycin-resistant Enterococcus faecium (VREfm) at a hospital during a VREfm outbreak based on contact characteristics in order to better understand the effectiveness of cohorting. METHODS Exposure came from contact with patients with VREfm (infectors), including existing patients with VREfm and patients who acquired VREfm during the study period. Contact was defined as length of contact time, degree of sharing space, and care by the same nurses as those caring for infectors between January and March 2018. The outcome was VREfm acquisition as determined through monthly stool or rectal screening cultures. Incidence rates were calculated based on contact patterns, and incidence rate ratios (IRRs) were compared. FINDINGS Among 272 inpatients (4038 patient-days), 43 patients acquired VREfm with the same or similar pulsotype. Incidence rates were 8.45 per 1000 patient-days when susceptible inpatients were on the same ward as an infector but cared for by different nurses (reference), 16.96 when susceptible inpatients were on the same ward as an infector and cared for by the same nurses [IRR 2.01, 95% confidence interval (CI) 0.62-10.28], and 52.91 when susceptible inpatients shared a room with an infector (IRR 6.26, 95% CI 1.61-35.40). CONCLUSION Compared with susceptible inpatients in a different room from infectors and not being cared for by the same nurses, the risk of VREfm acquisition could be six times higher for susceptible inpatients who are in the same room as infectors, and could be double for susceptible inpatients cared for by the same nurses as infectors.
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Affiliation(s)
- K Kakimoto
- Field Epidemiology Training Programme, National Institute of Infectious Diseases, Tokyo, Japan; Osaka Field Epidemiologic Investigation Team, Division of Public Health, Osaka Institute of Public Health, Osaka, Japan
| | - S Nishiki
- Field Epidemiology Training Programme, National Institute of Infectious Diseases, Tokyo, Japan; Centre for Field Epidemiology Intelligence, Research and Professional Development, National Institute of Infectious Diseases, Tokyo, Japan
| | - Y Kaga
- Field Epidemiology Training Programme, National Institute of Infectious Diseases, Tokyo, Japan; Inba Public Health Centre, Chiba, Japan
| | - T Harada
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - R Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - H Takahashi
- Infection Control Team, Nagayama Hospital, Osaka, Japan
| | - E Ueda
- Izumisano Public Health Centre, Osaka, Japan
| | - N Koshimo
- Izumisano Public Health Centre, Osaka, Japan
| | - H Ito
- Izumisano Public Health Centre, Osaka, Japan
| | - T Matsui
- Centre for Field Epidemiology Intelligence, Research and Professional Development, National Institute of Infectious Diseases, Tokyo, Japan
| | - K Oishi
- Centre for Field Epidemiology Intelligence, Research and Professional Development, National Institute of Infectious Diseases, Tokyo, Japan; Toyama Institute of Health, Toyama, Japan
| | - T Yamagishi
- Antimicrobial Resistance Research Centre, National Institute of Infectious Diseases, Tokyo, Japan.
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6
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Hoa HTT, Higashi A, Yamaguchi T, Kawahara R, Calvopina M, Bastidas-Caldés A, Yamamoto M, Yamamoto Y. Fusion plasmid carrying the colistin resistance gene mcr of Escherichia coli isolated from healthy residents. J Glob Antimicrob Resist 2022; 30:152-154. [PMID: 35705132 DOI: 10.1016/j.jgar.2022.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 06/08/2022] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES The extensive spread of colistin resistance represents an enormous concern to infectious disease treatment, because colistin is one of the few effective antibiotics against multidrug-resistant bacterial infections, including carbapenem-resistant bacteria. This dissemination can be caused by plasmid transfer containing the colistin resistance gene mcr. Therefore, the plasmid host range affects horizontal gene transfer. This study reports a fusion plasmid of different incompatibility types, which could easily expand the plasmid host range, allowing widespread mcr prevalence in the microbial community. METHODS Genome sequences of colistin-resistant Escherichia coli isolates from stool specimens of healthy human residents in Ecuador were determined using the DNBSEQ and MinION platforms. Hybrid genome assembly was performed using Unicycler, and the genomes were annotated using DFAST. Genome analysis was performed using the Geneious Prime software. RESULTS Two colistin-resistant E. coli strains isolated separately from different residents presented mcr-carrying plasmids with fused different incompatibility types, IncFIA, IncHIIA, and IncHIIB. The phylogenies of these host bacteria were different. The sizes of the mcr-carrying fusion plasmids pLR-06 and pLR-50 with the full Tn6330 mcr-transposon were 260 Kbp and 198 Kbp, respectively. Both fusion plasmids possessed other resistance genes, including tet(B), tet(M), blaTEM-1b, sul3, cmlA1, aadA1, aadA2, fosA3, and dfrA12. CONCLUSIONS This is the first report of a fusion plasmid comprising different incompatibility types with mcr from colistin-resistant E. coli strains isolated from community residents. The mcr fusion plasmid may play a crucial role in achieving horizontal mcr transmission and the evolution of the multidrug resistance plasmid among hosts.
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Affiliation(s)
- Hoang Thi Thanh Hoa
- The United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Ayano Higashi
- The United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Takahiro Yamaguchi
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Manuel Calvopina
- One Health Reserach Group, Universidad De Las Americas, Quito, Ecuador
| | - Andres Bastidas-Caldés
- One Health Reserach Group, Universidad De Las Americas, Quito, Ecuador; Universidad de Extremadura, Extremadura, Caceres, Spain
| | - Mayumi Yamamoto
- The United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan; Health Administration Center, Gifu University, Gifu, Japan
| | - Yoshimasa Yamamoto
- The United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan.
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Yamamoto Y, Higashi A, Ikawa K, Hoang HTT, Yamaguchi T, Kawahara R, Noguchi H, Nguyen TN, Khong DT, Tran HT. Horizontal transfer of a plasmid possessing mcr-1 marked with a single nucleotide mutation between Escherichia coli isolates from community residents. BMC Res Notes 2022; 15:196. [PMID: 35659286 PMCID: PMC9166650 DOI: 10.1186/s13104-022-06079-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives The widespread dissemination of phenotypic colistin-resistant (COR) bacteria in the community threatens public health. The horizontal gene transfer of the mobile colistin resistance gene via plasmids is thought to be one of the main mechanisms for dissemination. However, genotypic evidence to prove this in community settings is limited. This study used genome analysis to demonstrate the direct horizontal colistin resistance gene transfer via plasmids in isolates from the community. Results A total of 19 isolates of COR Escherichia coli from stool specimens of 23 residents from seven households in the Vietnamese community were assessed in this study. The whole-genome sequence data of isolates were acquired using a combination of DNBSEQ short-reads and Nanopore long-read sequencing. Analysis of genomic data was performed using online tools such as Geneious. Analysis of the genomic information of COR E. coli isolates revealed that the isolates from two residents of different households had a similar IncP1 plasmid possessing mcr-1.1, marked with a single nucleotide mutation at the same position. The study provided direct evidence to prove that mcr was horizontally transmitted among bacteria in community residents. Supplementary Information The online version contains supplementary material available at 10.1186/s13104-022-06079-z.
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Affiliation(s)
- Yoshimasa Yamamoto
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan.
| | - Ayano Higashi
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Kanoko Ikawa
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Hoa Thi Thanh Hoang
- United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Takahiro Yamaguchi
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Hideki Noguchi
- Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Mishima, Japan
| | - Thang Nam Nguyen
- Center for Medical and Pharmaceutical Research and Service, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Diep Thi Khong
- Center for Medical and Pharmaceutical Research and Service, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Hoa Thi Tran
- Center for Medical and Pharmaceutical Research and Service, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
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Kawahara R, Watahiki M, Matsumoto Y, Uchida K, Noda M, Masuda K, Fukuda C, Abe Y, Asano Y, Oishi K, Shibayama K, Shinomiya H. Subtype Screening of bla IMP Genes Using Bipartite Primers for DNA Sequencing. Jpn J Infect Dis 2021; 74:592-599. [PMID: 33790070 DOI: 10.7883/yoken.jjid.2020.926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Genes conferring carbapenem resistance have spread worldwide among gram-negative bacteria. Subtyping of these genes has epidemiological value due to the global cross-border movement of people. Subtyping of blaIMP genes that frequently detected in Japan appears to be important in public health settings; however, there are few useful tools for this purpose. We developed a subtyping screening tool based on PCR direct sequencing, which targets the internal sequences of almost all blaIMP genes. The tool used bipartite multiplex primers with M13 universal sequences at the 5'-end. According to in silico analysis, among the 78 known IMP-type genes, except for blaIMP-81, 77 detected genes were estimated to be differentiated. In vitro evaluation indicated that sequences of amplicons of IMP-1, IMP-6, IMP-7, and IMP-20 templates were identical to their respective subtypes. Even if the amplicons were small or undetectable through the first PCR, sufficient amplicons for DNA sequencing were obtained through a second PCR using the M13 universal primers. In conclusion, our tool can be possibly used for subtype screening of blaIMP, which is useful for the surveillance of bacteria with blaIMP in clinical and public health settings or environmental fields.
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Affiliation(s)
- Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Japan
| | | | - Yuko Matsumoto
- Microbiological Testing and Research Division, Yokohama City Institute of Public Health, Japan
| | - Kaoru Uchida
- Department of Bacteriology, Toyama Institute of Health, Japan
| | - Makiko Noda
- Department of Infectious Diseases, Gifu Prefectural Research Institute for Health and Environmental Sciences, Japan
| | - Kanako Masuda
- Public Health and Environment Center, Hiroshima Prefectural Technology Research Institute, Japan
| | - Chiemi Fukuda
- Department of Microbiology, Kagawa Prefectural Research Institute for Environmental Sciences and Public Health, Japan
| | - Yuki Abe
- Department of Microbiology, Ehime Prefectural Institute of Public Health and Environmental Science, Japan
| | - Yukiko Asano
- Department of Microbiology, Ehime Prefectural Institute of Public Health and Environmental Science, Japan
| | - Kazunori Oishi
- Department of Bacteriology, Toyama Institute of Health, Japan
| | - Keigo Shibayama
- Department of Bacteriology II, National Institute of Infectious Diseases, Japan
| | - Hiroto Shinomiya
- Department of Microbiology, Ehime Prefectural Institute of Public Health and Environmental Science, Japan
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9
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Adachi F, Sekizuka T, Yamato M, Fukuoka K, Yamaguchi N, Kuroda M, Kawahara R. Characterization of FRI carbapenemase-producing Enterobacter spp. isolated from a hospital and the environment in Osaka, Japan. J Antimicrob Chemother 2021; 76:3061-3062. [PMID: 34383911 DOI: 10.1093/jac/dkab284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 07/13/2021] [Indexed: 11/14/2022] Open
Affiliation(s)
- Fumie Adachi
- Department of Environmental Health, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
| | - Tsuyoshi Sekizuka
- Pathogen Genomics Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Masaya Yamato
- Division of General Internal Medicine and Infectious Diseases, Rinku General Medical Center, 2-23 Rinku Ourai-Kita, Izumisano, Osaka 598-8577, Japan
| | - Kyoko Fukuoka
- Division of General Internal Medicine and Infectious Diseases, Rinku General Medical Center, 2-23 Rinku Ourai-Kita, Izumisano, Osaka 598-8577, Japan
| | - Nobuyasu Yamaguchi
- Department of Environmental Health, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
| | - Makoto Kuroda
- Pathogen Genomics Center, National Institute of Infectious Diseases, 1-23-1 Toyama, Shinjuku-ku, Tokyo 162-8640, Japan
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
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Wakabayashi Y, Sekizuka T, Yamaguchi T, Fukuda A, Suzuki M, Kawahara R, Taguchi M, Kuroda M, Semba K, Shinomiya H, Kawatsu K. Isolation and plasmid characterisation of Salmonella enterica serovar Albany harbouring mcr-5 from retail chicken meat in Japan. FEMS Microbiol Lett 2021; 367:5881302. [PMID: 32756977 DOI: 10.1093/femsle/fnaa127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 07/28/2020] [Indexed: 11/13/2022] Open
Abstract
The emergence of plasmid-mediated colistin resistance genes (mcr), which is occurring in numerous countries, is a worldwide concern, primarily because colistin is a last-resort antibiotic. Compared to E. coli, prevalence of mcr genes in Salmonella is unclear in Japan. Here we screened for mcr-1-5 genes in our collection of Salmonella strains isolated from retail meat products collected in Japan from 2012 through 2016. We found that Salmonella Albany strain 27A-368 encodes mcr-5 and that mcr genes were undetectable among the remaining 202 isolates. The resistance plasmid p27A-368 was transferred by conjugation to S. Infantis and was stably retained as a transconjugant. Whole-genome sequencing revealed that mcr-5 resided on a 115 kb plasmid (p27A-368). The plasmid backbone of p27A-368 is more similar to that of pCOV27, an ESBL-encoding plasmid recovered from avian pathogenic E. coli, rather than pSE13-SA01718 of S. Paratyphi B that encodes mcr-5. Further, mcr-5 is located on a transposon, and its sequence is similar to that of pSE13-SA01718. A phylogenetic tree based on single nucleotide variants implies a relationship between 27A-368 and S. Albany isolated in Southeast Asian countries.
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Affiliation(s)
- Yuki Wakabayashi
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
| | - Tsuyoshi Sekizuka
- Pathogen Genomics Centre, National Institute of Infectious Diseases, 1-3-21 Toyama Shinjuku-ku, Tokyo, Japan
| | - Takahiro Yamaguchi
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
| | - Akira Fukuda
- Microbiology Section, Division of Microbiology, Osaka Institute of Public Health, 8-34 Toujyo-cho, Tennouji-ku, Osaka, Japan
| | - Masato Suzuki
- Antimicrobial Resistance Research Centre, National Institute of Infectious Diseases, 4-2-1 Aoba-cho, Higashimurayama-shi, Tokyo, Japan
| | - Ryuji Kawahara
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
| | - Masumi Taguchi
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
| | - Makoto Kuroda
- Pathogen Genomics Centre, National Institute of Infectious Diseases, 1-3-21 Toyama Shinjuku-ku, Tokyo, Japan
| | - Keiko Semba
- Ehime Prefectural Institute of Public Health and Environmental Science, 8-234 Sanban-cho, Matsuyama-shi, Ehime, Japan
| | - Hiroto Shinomiya
- Ehime Prefectural Institute of Public Health and Environmental Science, 8-234 Sanban-cho, Matsuyama-shi, Ehime, Japan
| | - Kentaro Kawatsu
- Bacteriology Section, Division of Microbiology, Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
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11
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Belotindos L, Villanueva M, Miguel J, Bwalya P, Harada T, Kawahara R, Nakajima C, Mingala C, Suzuki Y. Prevalence and Characterization of Quinolone-Resistance Determinants in Escherichia coli Isolated from Food-Producing Animals and Animal-Derived Food in the Philippines. Antibiotics (Basel) 2021; 10:antibiotics10040413. [PMID: 33918946 PMCID: PMC8068814 DOI: 10.3390/antibiotics10040413] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/07/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023] Open
Abstract
Antimicrobial resistance to quinolones, which constitutes a threat to public health, has been increasing worldwide. In this study, we investigated the prevalence of quinolone-resistant determinants in Escherichia coli not susceptible to quinolones and isolated from food-producing animals and food derived from them, in the Philippines. A total of 791 E. coli strains were isolated in 56.4% of 601 beef, chicken, pork, egg, and milk samples, as well as environmental, cloacal, and rectal swab-collected samples from supermarkets, open markets, abattoirs, and poultry, swine, and buffalo farms. Using the disc diffusion method, it was determined that 78.6% and 55.4% of the isolates were resistant to at least one antimicrobial and multiple drugs, respectively. In 141 isolates not susceptible to quinolones, 115 (81.6%) harbored quinolone-resistant determinants and had mutations predominantly in the quinolone-resistance determining regions (QRDRs) of gyrA and parC. Plasmid-mediated, quinolone resistance (PMQR) and Qnr family (qnrA1, qnrB4, and qnrS1) genes were detected in all isolates. Forty-eight sequence types were identified in isolates harboring mutations in QRDR and/or PMQR genes by multilocus sequence typing analysis. Moreover, 26 isolates harboring mutations in QRDR and/or PMQR genes belonged mostly to phylogroup B1 and Enteroaggregative E. coli. In conclusion, a high prevalence of E. coli was found in food-producing animals and products derived from them, which could potentially spread high-risk clones harboring quinolone-resistance determinants.
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Affiliation(s)
- Lawrence Belotindos
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; (L.B.); (P.B.); (C.N.)
- Biosafety and Environment Section, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines; (M.V.); (C.M.)
| | - Marvin Villanueva
- Biosafety and Environment Section, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines; (M.V.); (C.M.)
| | - Joel Miguel
- Livestock Biotechnology Center, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines;
| | - Precious Bwalya
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; (L.B.); (P.B.); (C.N.)
| | - Tetsuya Harada
- Division of Microbiology, Osaka Institute of Public Health, Osaka 537-0025, Japan; (R.K.); (T.H.)
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Osaka 537-0025, Japan; (R.K.); (T.H.)
| | - Chie Nakajima
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; (L.B.); (P.B.); (C.N.)
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0021, Japan
| | - Claro Mingala
- Biosafety and Environment Section, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines; (M.V.); (C.M.)
- Livestock Biotechnology Center, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija 3120, Philippines;
| | - Yasuhiko Suzuki
- Division of Bioresources, International Institute for Zoonosis Control Hokkaido University, Sapporo 001-0020, Japan; (L.B.); (P.B.); (C.N.)
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo 001-0021, Japan
- Correspondence: ; Tel.: +81-011-706-7315; Fax: +81-0-706-7310
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12
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Kawahara R, Yamaguchi T, Yamamoto Y. Comparative Genome Analysis of Livestock and Human Colistin-Resistant Escherichia coli Isolates from the Same Household. Infect Drug Resist 2021; 14:841-847. [PMID: 33688219 PMCID: PMC7937380 DOI: 10.2147/idr.s298120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/17/2021] [Indexed: 11/25/2022] Open
Abstract
Background Emergence and dissemination of colistin-resistant bacteria that harbor mobile colistin resistance (mcr) genes pose a dire challenge for the treatment of intractable infections caused by multidrug-resistant bacteria. Current findings on colistin-resistant bacteria in both humans and livestock of the same households highlight the need to identify the dissemination mechanisms of colistin-resistant bacteria. Methods In this study, a comparative genome analysis of colistin-resistant Escherichia coli isolates from livestock and humans of the same household was performed to clarify the possible dissemination mechanism of mcr genes among bacteria. Pulsed-field gel electrophoresis and whole-genome sequencing followed by sequence typing of the isolates were performed for assessment of the samples. Results The study revealed that two colistin-resistant E. coli isolates, one each from a pig and a chicken, were phylogenetically similar but not identical to the human isolates obtained from the same household. The comparative genome analysis revealed that the chicken isolate and a human isolate shared the same IncHl2 plasmid harboring the mcr transposon (mcr-1-PAP2). The pig isolate and the other human isolate retained the mcr-1 transposon on the chromosome, with the pig isolate carrying the complete mcr transposon (ISApl1-mcr-1-PAP2-ISApl1) and the human isolate carrying the incomplete mcr transposon (ISApl1-mcr-1-PAP2). Conclusion The results of the study confirm the distribution of colistin-resistant bacteria and subsequent transmission of the resistance gene-carrying transposon between livestock and humans of the same household. To the best of our knowledge, this is the first report on genomic analysis of colistin-resistant E. coli isolates obtained from livestock and residents of the same household.
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Affiliation(s)
- Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Takahiro Yamaguchi
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Yoshimasa Yamamoto
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan.,Life Science Research Center, Gifu University, Gifu, Japan
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13
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Umeda K, Nakamura H, Fukuda A, Matsumoto Y, Motooka D, Nakamura S, Yasui Y, Yoshida H, Kawahara R. Genomic characterization of clinical Enterobacter roggenkampii co-harbouring bla IMP-1- and bla GES-5-encoding IncP6 and mcr-9-encoding IncHI2 plasmids isolated in Japan. J Glob Antimicrob Resist 2021; 24:220-227. [PMID: 33385587 DOI: 10.1016/j.jgar.2020.11.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/29/2020] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES The spread of carbapenemase-producing Enterobacterales (CPE) with colistin resistance is a critical public health issue. We genetically characterized the clinical isolate Enterobacter roggenkampii OIPH-N260, which harboured carbapenemase genes blaIMP-1 and blaGES-5 with multiple resistance genes, including mcr-9 and blaCTX-M-9. METHODS This isolate was characterized by whole-genome sequencing, comparative analysis of resistance plasmids, susceptibility tests, bacterial conjugation, S1-nuclease digested pulsed-field-gel electrophoresis, and Southern blot hybridization. RESULTS The OIPH-N260 isolate exhibited resistance to most β-lactams and colistin. It co-harboured two resistance plasmids, the blaIMP-1- and blaGES-5-encoding IncP6 plasmid pN260-3 and mcr-9- and blaCTX-M-9-encoding IncHI2 plasmid pN260-1. The comparative analysis of pN260-3 indicated that a unique blaIMP-1-surrounding region was inserted into the blaGES-5-encoding plasmid with the mobile element IS26, which plays an important role in the spread of resistance genes. pN260-1 did not possess the mcr-9 expression regulative gene qseBC. Both plasmids were transferable into other bacterial species via conjugation. CONCLUSIONS This is the first study to report not only a blaIMP-1 and blaGES-5 co-encoding plasmid, but also the co-harbouring of another plasmid carrying mcr-9 and blaCTX-M-9 in Enterobacter cloacae complex. The development of advanced resistance via IS26-mediated insertion and the co-harbouring of resistance plasmids highlights the need to monitor for resistance genes in CPE.
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Affiliation(s)
- Kaoru Umeda
- Division of Microbiology, Osaka Institute of Public Health, 8-34 Tojo-cho, Tennoji-ku, Osaka, Japan.
| | - Hiromi Nakamura
- Division of Microbiology, Osaka Institute of Public Health, 8-34 Tojo-cho, Tennoji-ku, Osaka, Japan
| | - Akira Fukuda
- Division of Microbiology, Osaka Institute of Public Health, 8-34 Tojo-cho, Tennoji-ku, Osaka, Japan; Department of Health and Environmental Sciences, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai Midorimachi, Ebetsu, Hokkaido, Japan
| | - Yuki Matsumoto
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Shota Nakamura
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Yoshinori Yasui
- Osaka Saiseikai Nakatsu Hospital, 2-10-39 Shibata, Kita-ku, Osaka, Japan
| | - Hideki Yoshida
- Osaka City Public Health Office, 1-2-7-1000 Asahi-cho, Abeno-ku, Osaka, Japan
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, 8-34 Tojo-cho, Tennoji-ku, Osaka, Japan
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14
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Hirose Y, Yamaguchi M, Takemoto N, Miyoshi-Akiyama T, Sumitomo T, Nakata M, Ikebe T, Hanada T, Yamaguchi T, Kawahara R, Okuno R, Otsuka H, Matsumoto Y, Terashima Y, Kazawa Y, Nakanishi N, Uchida K, Akiyama Y, Iwabuchi K, Nakagawa C, Yamamoto K, Nizet V, Kawabata S. Genetic Characterization of Streptococcus pyogenes emm89 Strains Isolated in Japan From 2011 to 2019. Infect Microbes Dis 2020; 2:160-166. [PMID: 38630060 PMCID: PMC7769053 DOI: 10.1097/im9.0000000000000038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 04/19/2024]
Abstract
Invasive infection caused by Streptococcus pyogenes emm89 strains has been increasing in several countries linked to a recently emergent clade of emm89 strains, designated clade 3. In Japan, the features of emm89 S. pyogenes strains, such as clade classification, remains unknown. In this study, we collected emm89 strains isolated from both streptococcal toxic shock syndrome (STSS) (89 STSS isolates) and noninvasive infections (72 non-STSS isolates) in Japan from 2011 to 2019, and conducted whole-genome sequencing and comparative analysis, which resulted in classification of a large majority into clade 3 regardless of disease severity. In addition, invasive disease-associated factors were found among emm89 strains, including mutations of control of virulence sensor, and absence of the hylP1 gene encoding hyaluronidase. These findings provide new insights into genetic features of emm89 strains.
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Affiliation(s)
- Yujiro Hirose
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
- Department of Pediatrics, University of California at San Diego School of Medicine, La Jolla, CA, USA
| | - Masaya Yamaguchi
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Norihiko Takemoto
- Department of Infectious Diseases, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tohru Miyoshi-Akiyama
- Department of Infectious Diseases, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Tomoko Sumitomo
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Masanobu Nakata
- Department of Oral Microbiology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Tadayoshi Ikebe
- Department of Bacteriology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tomoki Hanada
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - Takahiro Yamaguchi
- Division of Microbiology, Osaka Institute of Public Health, Osaka City, Osaka, Japan
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Osaka City, Osaka, Japan
| | - Rumi Okuno
- Department of Microbiology, Tokyo Metropolitan Institute of Public Health, Tokyo, Japan
| | - Hitoshi Otsuka
- Department of Public Health Sciences, Yamaguchi Prefectural Institute of Public Health and Environment Yamaguchi City, Yamaguchi, Japan
| | - Yuko Matsumoto
- Microbiological Testing and Research Division, Yokohama City Institute of Public Health, Yokohama, Kanagawa, Japan
| | - Yuji Terashima
- Department of Microbiology, Fukushima Prefectural Institute of Public Health, Fukushima City, Fukushima, Japan
| | - Yu Kazawa
- Department of Microbiology, Fukushima Prefectural Institute of Public Health, Fukushima City, Fukushima, Japan
| | - Noriko Nakanishi
- Department of Infectious Diseases, Kobe Institute of Health, Kobe, Hyogo, Japan
| | - Kaoru Uchida
- Department of Bacteriology, Toyama Institute of Health, Imizu, Toyama, Japan
| | - Yumi Akiyama
- Infectious Disease Research Division, Hyogo Prefectural Institute of Public Health Science, Kakogawa, Hyogo, Japan
| | - Kaori Iwabuchi
- Department of Health Science, Iwate Prefectural Research Institute for Environmental Sciences and Public Health, Morioka, Iwate, Japan
| | - Chikara Nakagawa
- Division of Microbiology, Kyoto City Institute of Health and Environmental Sciences, Kyoto City, Kyoto, Japan
| | - Kazunari Yamamoto
- Niigata City Institute of Public Health and the Environment, Niigata City, Niigata, Japan
| | - Victor Nizet
- Department of Pediatrics, University of California at San Diego School of Medicine, La Jolla, CA, USA
- Skaggs School of Pharmaceutical Sciences, University of California at San Diego, La Jolla, CA, USA
| | - Shigetada Kawabata
- Department of Oral and Molecular Microbiology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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15
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Harada T, Motooka D, Nakamura S, Yamamoto Y, Yamaguchi T, Kawahara R, Kawatsu K. Detection of Genetic Elements Carrying vanA in Vancomycin-Resistant Enterococcus saigonensis VE80 T Isolated from Retail Chicken Meat. Foodborne Pathog Dis 2020; 17:772-774. [PMID: 32799583 DOI: 10.1089/fpd.2020.2827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In this study, we aimed to detect genetic elements carrying vanA in Enterococcus saigonensis VE80T isolated from retail chicken in Vietnam. The structures of vancomycin-resistance determinants and the location of vancomycin-resistance genes were detected by sequencing the vanA gene cluster, Southern hybridization analyses, and whole-genome sequence analyses. The Tn1546-related elements harboring vanA clusters, which exhibited a characteristic structure with five point mutations compared with the prototype Tn1546, were located on the 76-kb plasmid pVE80-1 of VE80T. The vanS sequence of VE80T harboring three point mutations was 100% identical to those of vancomycin-resistant enterococci isolated from poultry in Taiwan and Japan, indicating that the element may be prevalent in poultry production farms in Asia.
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Affiliation(s)
- Tetsuya Harada
- Division of Bacteriology, Osaka Institute of Public Health, Osaka, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Shota Nakamura
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | | | - Takahiro Yamaguchi
- Division of Bacteriology, Osaka Institute of Public Health, Osaka, Japan
| | - Ryuji Kawahara
- Division of Bacteriology, Osaka Institute of Public Health, Osaka, Japan
| | - Kentaro Kawatsu
- Division of Bacteriology, Osaka Institute of Public Health, Osaka, Japan
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16
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Nakayama T, Kumeda Y, Kawahara R, Yamamoto Y. Quantification and long-term carriage study of human extended-spectrum/AmpC β-lactamase-producing Escherichia coli after international travel to Vietnam. J Glob Antimicrob Resist 2020; 21:229-234. [DOI: 10.1016/j.jgar.2019.11.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 08/05/2019] [Accepted: 11/01/2019] [Indexed: 10/25/2022] Open
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Abe R, Akeda Y, Sakamoto N, Kumwenda G, Sugawara Y, Yamamoto N, Kawahara R, Tomono K, Fujino Y, Hamada S. Genomic characterisation of a novel plasmid carrying bla IMP-6 of carbapenem-resistant Klebsiella pneumoniae isolated in Osaka, Japan. J Glob Antimicrob Resist 2020; 21:195-199. [PMID: 31627024 DOI: 10.1016/j.jgar.2019.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 10/04/2019] [Accepted: 10/04/2019] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVES To analyse plasmids carrying blaIMP-6 in Klebsiella pneumoniae isolates obtained from multicentre carbapenem-resistant Enterobacteriaceae surveillance. METHODS Plasmids harbouring blaIMP-6 were characterised by the whole-genome sequencing of four Klebsiella pneumoniae isolates carrying blaIMP-6, and compared with the pKPI-6 plasmid, which is widespread in western Japan, through pulsed-field gel electrophoresis, Southern blotting, bacterial conjugation, and qPCR. RESULTS Whole-genome sequencing analysis revealed that three of the four isolates carried approximately 50 kbp plasmids similar to the pKPI-6 plasmid; however, one isolate carried a 250 kbp plasmid harbouring blaIMP-6 (pE196_IMP6). So far, all of the reported plasmids carrying blaIMP-6 were similar to the pKPI-6 plasmid, and this plasmid was a novel blaIMP6-carrier. The size and transferability of this plasmid was confirmed by Southern hybridisation and conjugation experiments. It was demonstrated that the generation of plasmid pE196_IMP6 was due to an intramolecular transposition mediated by IS26, and a homologous recombination between plasmids pKPI-6 and pE013 that was obtained from another carbapenem-resistant Enterobacteriaceae isolate in this analysis. As a result of co-integration with pE013, pE196_IMP6 acquired six additional pairs of type II toxin-antitoxin systems that pKPI-6 does not carry. Transcription of all of the toxin-antitoxin systems were confirmed in an isolate carrying pE196_IMP6 by qPCR. CONCLUSIONS This study detected a novel plasmid carrying blaIMP-6, and revealed the origin of this plasmid. Toxin-antitoxin system acquisition could enable pE196_IMP6 maintenance persistently through successions, even without selection pressure by the clinical usage of antimicrobials, generating broad dissemination and longer carbapenem-resistant Enterobacteriaceae colonisation duration in patients.
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Affiliation(s)
- Ryuichiro Abe
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan; Department of Anaesthesiology and Intensive Care Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Yukihiro Akeda
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan; Division of Infection Control and Prevention, Osaka University Hospital, Osaka University, Suita, Japan.
| | - Noriko Sakamoto
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Geoffrey Kumwenda
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Yo Sugawara
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Norihisa Yamamoto
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan; Division of Infection Control and Prevention, Osaka University Hospital, Osaka University, Suita, Japan
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Kazunori Tomono
- Division of Infection Control and Prevention, Osaka University Hospital, Osaka University, Suita, Japan
| | - Yuji Fujino
- Department of Anaesthesiology and Intensive Care Medicine, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Shigeyuki Hamada
- Thailand-Japan Research Collaboration Centre on Emerging and Re-emerging Infections, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
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18
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Yamamoto Y, Kawahara R, Fujiya Y, Sasaki T, Hirai I, Khong DT, Nguyen TN, Nguyen BX. Wide dissemination of colistin-resistant Escherichia coli with the mobile resistance gene mcr in healthy residents in Vietnam. J Antimicrob Chemother 2020; 74:523-524. [PMID: 30380052 DOI: 10.1093/jac/dky435] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yoshimasa Yamamoto
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Yoshihiro Fujiya
- Graduate School of Medical Science, Osaka University, Suita, Japan
| | - Tadahiro Sasaki
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Itaru Hirai
- Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Diep Thi Khong
- Centre of Medical and Pharmaceutical Science & Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Thang Nam Nguyen
- Centre of Medical and Pharmaceutical Science & Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Bai Xuan Nguyen
- Centre of Medical and Pharmaceutical Science & Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
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Abstract
We report the first detection of a macrolide-resistant Bordetella pertussis strain in Japan. The isolate was highly resistant to the macrolides (minimum inhibitory concentrations for erythromycin and clarithromycin: > 256 µg/ml, for azithromycin: 32 µg/ml) and A2047G mutation was identified in the 23S rRNA. The Multilocus Sequence Typing and Multilocus Variable Number of Tandem Repeat Analysis genotypes of this isolate were MT195 and ptxP1/ptxA1/prn1/fim3A/fhaB3, respectively, suggesting a relationship with the macrolide-resistant B. pertussis lineage currently found in China. This raises the possibility that macrolide-resistant B. pertussis has already fully spread in Japan. For a better control of B. pertussis infections, the surveillance for macrolide-resistant B. pertussis is essential in not only Japan, but also other Asian countries.
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Affiliation(s)
| | | | - Chihiro Katsukawa
- Department of Veterinary Internal Medicine, Division of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Japan
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Japan
| | - Kentaro Kawatsu
- Division of Microbiology, Osaka Institute of Public Health, Japan
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20
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Mohsin M, Tanaka K, Kawahara R, Kondo S, Noguchi H, Motooka D, Nakamura S, Khong DT, Nguyen TN, Hoang TN, Yamamoto Y. Whole-genome sequencing and comparative analysis of the genomes of Bacteroides thetaiotaomicron and Escherichia coli isolated from a healthy resident in Vietnam. J Glob Antimicrob Resist 2020; 21:65-67. [PMID: 32200128 DOI: 10.1016/j.jgar.2020.02.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/25/2020] [Accepted: 02/29/2020] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVES The aim of this study was to report the draft genome sequences of two multidrug-resistant bacteria (Bacteroides thetaiotaomicron F9-2 and Escherichia coli 09-02E) isolated from stool samples of a healthy resident in Vietnam. METHODS Genome sequences were determined using MiSeq and MinION platforms. Genome assembly was performed using Platanus Assembler v.1.2.4 and Canu v.1.7. The DDBJ Fast Annotation and Submission Tool were used for genome annotation. RESULTS The genome of B. thetaiotaomicron F9-2 comprised 6 283 774 bp with a GC content of 42.7% and 4802 protein coding sequences (CDS), whereas the genome of E. coli 09-02E comprised 5 246 320 bp with a GC content of 50.6% and 4991 protein CDS. Both strains harboured common antimicrobial resistance genes, such as those for sulfonamides (sul2) and aminoglycosides (strA, strB). However, the sul2-strA-strB cassette was located on the chromosome of B. thetaiotaomicron F9-2, whereas it was located on a plasmid in E. coli 09-02E. These genes were flanked by different insertion sequences. CONCLUSION Considering their diversities in the human gut resistome, these strains would be of considerable interest for detailed comparative genomic analysis. Notably, the same sul2 cassette was found in facultative and obligate anaerobic bacterial isolates (resident in humans). However, the different location of the cassette indicates a possible mechanism of gene transfer among gut microbes.
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Affiliation(s)
- Mashkoor Mohsin
- Division of Anaerobe Research, Life Science Research Center, Gifu University, Gifu, Japan; Institute of Microbiology, University of Agriculture, Faisalabad, Pakistan
| | - Kaori Tanaka
- Division of Anaerobe Research, Life Science Research Center, Gifu University, Gifu, Japan
| | - Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Shinji Kondo
- Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Mishima, Japan
| | - Hideki Noguchi
- Joint Support-Center for Data Science Research, Research Organization of Information and Systems, Mishima, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Shota Nakamura
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Diep Thi Khong
- Center of Medical-Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Viet Nam
| | - Thang Nam Nguyen
- Center of Medical-Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Viet Nam
| | - Trong Nang Hoang
- Center of Medical-Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Viet Nam
| | - Yoshimasa Yamamoto
- Division of Anaerobe Research, Life Science Research Center, Gifu University, Gifu, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan.
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21
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Watahiki M, Kawahara R, Suzuki M, Aoki M, Uchida K, Matsumoto Y, Kumagai Y, Noda M, Masuda K, Fukuda C, Harada S, Senba K, Suzuki M, Matsui M, Suzuki S, Shibayama K, Shinomiya H. Single-Tube Multiplex Polymerase Chain Reaction for the Detection of Genes Encoding Enterobacteriaceae Carbapenemase. Jpn J Infect Dis 2019; 73:166-172. [PMID: 31787735 DOI: 10.7883/yoken.jjid.2019.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A multiplex PCR assay in a single tube was developed for the detection of the carbapenemase genes of Enterobacteriaceae. Primers were designed to amplify the following six carbapenemase genes: blaKPC, blaIMP, blaNDM, blaVIM, blaOXA-48-like, and blaGES. Of 70 blaIMP variants, 67 subtypes were simulated to be PCR-positive based on in silico simulation and the primer-design strategy. After determining the optimal PCR conditions and performing in vitro assays, the performance of the PCR assay was evaluated using 51 and 91 clinical isolates with and without carbapenemase genes, respectively. In conclusion, the combination of multiplex PCR primers and QIAGEN Multiplex PCR Plus Kit was used to determine the best performance for the rapid and efficient screening of carbapenemase genes in Enterobacteriaceae. The assay had an overall sensitivity and specificity of 100%. This PCR assay compensates for the limitations of phenotypic testing, such as antimicrobial susceptibility testing and the modified carbapenem inactivation method, in clinical and public health settings.
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Affiliation(s)
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health
| | - Masahiro Suzuki
- Department of Microbiology and Medical Zoology, Aichi Prefectural Institute of Public Health.,Present Address: Department of Microbiology, School of Medicine, Fujita Health University
| | - Miyako Aoki
- Department of Microbiology and Medical Zoology, Aichi Prefectural Institute of Public Health
| | - Kaoru Uchida
- Department of Bacteriology, Toyama Institute of Health
| | - Yuko Matsumoto
- Microbiological Testing and Research Division, Yokohama City Institute of Public Health
| | - Yuko Kumagai
- Hygiene Division, Bacteriology Section, Akita Prefectural Research Center for Public Health and Environment
| | - Makiko Noda
- Department of Infectious Diseases, Gifu Prefectural Research Institute for Health and Environmental Sciences
| | - Kanako Masuda
- Hiroshima Prefectural Technology Research Institute, Public Health and Environment Center
| | - Chiemi Fukuda
- Department of Microbiology, Kagawa Prefectural Research Institute for Environmental Sciences and Public Health
| | - Seiya Harada
- Department of Microbiology, Kumamoto Prefectural Institute of Public Health and Environmental Science
| | - Keiko Senba
- Department of Microbiology, Ehime Prefectural Institute of Public Health and Environmental Science
| | - Masato Suzuki
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases
| | - Mari Matsui
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases
| | - Satowa Suzuki
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases
| | - Keigo Shibayama
- Department of Bacteriology II, National Institute of Infectious Diseases
| | - Hiroto Shinomiya
- Department of Microbiology, Ehime Prefectural Institute of Public Health and Environmental Science
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22
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Kawahara R, Khong DT, Le HV, Phan QN, Nguyen TN, Yamaguchi T, Kumeda Y, Yamamoto Y. Prevalence Of mcr-1 Among Cefotaxime-Resistant Commensal Escherichia coli In Residents Of Vietnam. Infect Drug Resist 2019; 12:3317-3325. [PMID: 31695451 PMCID: PMC6815942 DOI: 10.2147/idr.s224545] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/09/2019] [Indexed: 12/14/2022] Open
Abstract
Purpose The dissemination of colistin-resistant bacteria harboring the colistin-resistance gene mcr-1 in developing countries has recently entered the spotlight as an emerging public health threat, which is attributed to the abuse of colistin use in these countries. However, the prevalence of these bacteria in developing countries has not been extensively investigated. Therefore, in the present study, we examined the prevalence of cefotaxime-resistant commensal Escherichia coli harboring mcr-1 among residents of a representative Vietnamese village and assessed the characteristics of these isolates. Materials and methods The stool samples, one stool sample per resident, of 612 residents were cultured on MacConkey agar with cefotaxime. Resulting E. coli-like colonies were isolated and examined further for the presence of colistin-resistant extended-spectrum β-lactamase (ESBL)-producing E. coli with mcr-1. Antibiotic susceptibility tests were performed, and clonal relationship among colistin-resistant isolates was assessed. Results Thirty-one of the 451 cefotaxime-resistant E. coli isolates were resistant to colistin and the majority possessed mcr-1, blaCTX-M, and/or blaTEM, except for two isolates that produced the AmpC β-lactamase. All mcr-1 ESBL-producing E. coli isolates were multidrug-resistant (5–11 antibiotics). The isolates contained various plasmid replicon types, including the most prevalent types IncHI2 (54.8%), IncFIB (48.4%), and IncN (41.9%). In addition, 83.9% of the mcr-1 ESBL-E. coli isolates possessed a transposon ISApl1-mcr-1 segment. Furthermore, 77.4% of the mcr-1 ESBL-E. coli isolates belonged to phylogenetic group A. Pulsed-field gel electrophoresis analysis indicated limited clonal expansion of a specific strain. Conclusion These results demonstrate the wide dissemination of colistin-resistant ESBL-E. coli harboring mcr-1 among commensal bacteria of rural residents in Vietnam, suggesting possible mobilization of the mcr-1 gene among ESBL-producing microbiota, which is a great public health concern.
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Affiliation(s)
- Ryuji Kawahara
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Diep Thi Khong
- Center of Medical, Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Ha Viet Le
- Center of Medical, Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Quang Ngoc Phan
- Center of Medical, Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Thang Nam Nguyen
- Center of Medical, Pharmaceutical Science and Technology Services, Thai Binh University of Medicine and Pharmacy, Thai Binh, Vietnam
| | - Takahiro Yamaguchi
- Department of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Yuko Kumeda
- Research Center for the 21st Century, Osaka Prefecture University, Osaka, Japan
| | - Yoshimasa Yamamoto
- Life Science Research Center, Gifu University, Gifu, Japan.,Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan
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23
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Yamaguchi T, Kawahara R, Harada K, Teruya S, Nakayama T, Motooka D, Nakamura S, Nguyen PD, Kumeda Y, Van Dang C, Hirata K, Yamamoto Y. The presence of colistin resistance gene mcr-1 and -3 in ESBL producing Escherichia coli isolated from food in Ho Chi Minh City, Vietnam. FEMS Microbiol Lett 2019; 365:4978414. [PMID: 29684127 DOI: 10.1093/femsle/fny100] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/17/2018] [Indexed: 12/26/2022] Open
Abstract
Colistin is indicated for the treatment of multidrug-resistant gram-negative bacterial infections. However, the spread of colistin-resistant bacteria harbouring an mcr gene has become a serious concern. This study investigated local foods in Vietnam for contamination with colistin-resistant bacteria. A total of 261 extended-spectrum β-lactamase (ESBL)- and AmpC-producing Escherichia coli isolates from 330 meat and seafood products were analysed for colistin susceptibility and the presence of mcr genes. Approximately, 24% (62/261) of ESBL- or AmpC-producing E. coli isolates showed colistin resistance; 97% (60/62) of colistin-resistant isolates harboured mcr-1, whereas 3% (2/62) harboured mcr-3. As the result of plasmid analysis of two strains, both plasmids harbouring mcr-3 revealed that plasmid replicon type was IncFII. Sequencing analysis indicated that an insertion sequence was present near mcr-3, suggesting that IncFII plasmids harbouring mcr-3 could be transferred to other bacterial species by horizontal transfer of the plasmid or transfer with some insertion sequence. In conclusion, ESBL-producing E. coli and AmpC-producing E. coli have acquired colistin resistance because 24% of such isolates show colistin resistance and 3% of the colistin-resistant strains harbour mcr-3. We reported the present of the mcr-3-carrying ESBL-producing E. coli isolated from pork in Vietnam.
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Affiliation(s)
- Takahiro Yamaguchi
- Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan.,Graduate School of Pharmaceutical Sciences Osaka University, 1-6 Yamadaoka, Suita, Osaka, Japan
| | - Ryuji Kawahara
- Osaka Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka, Japan
| | - Kazuo Harada
- Graduate School of Pharmaceutical Sciences Osaka University, 1-6 Yamadaoka, Suita, Osaka, Japan.,Osaka University Center for Global Initiatives, 1-1 Yamadaoka, Suita, Osaka, Japan
| | - Shihono Teruya
- Department of Molecular Bacteriology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Tatsuya Nakayama
- National Institute of Health Science, 3-25-26 Tonomachi, Kanagawa-ku, Kanagawa, Japan
| | - Daisuke Motooka
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Shota Nakamura
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, Japan
| | - Phuc Do Nguyen
- Institute of Public Health, Ho Chi Minh City, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City, Vietnam
| | - Yuko Kumeda
- Research Center for Microorganism Control Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, Japan
| | - Chinh Van Dang
- Institute of Public Health, Ho Chi Minh City, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City, Vietnam
| | - Kazumasa Hirata
- Graduate School of Pharmaceutical Sciences Osaka University, 1-6 Yamadaoka, Suita, Osaka, Japan
| | - Yoshimasa Yamamoto
- Graduate School of Pharmaceutical Sciences Osaka University, 1-6 Yamadaoka, Suita, Osaka, Japan
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24
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Terada S, Harada T, Yokota M, Tsuchiya T, Adachi K, Asaka T, Miura M, Kawahara R, Kawatsu K, Komano J. First isolation and characterization of vancomycin-resistant Enterococcus faecium harboring vanD5 gene cluster recovered from a 79-year-old female inpatient in Japan. Diagn Microbiol Infect Dis 2019; 95:114883. [PMID: 31495527 DOI: 10.1016/j.diagmicrobio.2019.114883] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/23/2019] [Accepted: 08/02/2019] [Indexed: 12/19/2022]
Abstract
This study reports the first isolation and characterization of a vanD5 genotype vancomycin-resistant Enterococcus faecium strain (E. faecium IPHb306) recovered from a 79-year-old Japanese female inpatient. Species identification was determined by biochemical testing, matrix-assisted laser desorption ionization-time of flight mass spectrometry, and species-specific PCR. Susceptibility tests indicated that E. faecium IPHb306 was resistant to vancomycin but susceptible to teicoplanin. Southern hybridization analyses indicated that E. faecium IPHb306 harbored a vanD5 gene cluster on chromosomal DNA. Growth curve analyses showed that a vancomycin resistance phenotype could be inducible. Sequencing analyses of the vanD5 gene cluster and the ddlE. faecium gene demonstrated several point mutations were present. Because this strain belongs to ST203, a major hospital-adapted lineage, spread of the vanD5 genotype E. faecium ST203 is considered a clinical threat in Japan.
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Affiliation(s)
- Satoko Terada
- Department of Clinical Laboratory, National Hospital Organization, Nagoya Medical Center, 4-1-1, Sannomaru, Naka-ku, Nagoya, Aichi Prefecture 460-0001, Japan
| | - Tetsuya Harada
- Division of Bacteriology, Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan.
| | - Masaharu Yokota
- Division of Bacteriology, Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Takako Tsuchiya
- Department of Clinical Laboratory, National Hospital Organization, Nagoya Medical Center, 4-1-1, Sannomaru, Naka-ku, Nagoya, Aichi Prefecture 460-0001, Japan
| | - Kaori Adachi
- Department of Clinical Laboratory, National Hospital Organization, Nagoya Medical Center, 4-1-1, Sannomaru, Naka-ku, Nagoya, Aichi Prefecture 460-0001, Japan
| | - Toshiyuki Asaka
- Department of Clinical Laboratory, National Hospital Organization, Nagoya Medical Center, 4-1-1, Sannomaru, Naka-ku, Nagoya, Aichi Prefecture 460-0001, Japan
| | - Michie Miura
- Department of Clinical Laboratory, National Hospital Organization, Nagoya Medical Center, 4-1-1, Sannomaru, Naka-ku, Nagoya, Aichi Prefecture 460-0001, Japan
| | - Ryuji Kawahara
- Division of Bacteriology, Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Kentaro Kawatsu
- Division of Bacteriology, Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Jun Komano
- Department of Clinical Laboratory, National Hospital Organization, Nagoya Medical Center, 4-1-1, Sannomaru, Naka-ku, Nagoya, Aichi Prefecture 460-0001, Japan
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25
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Yamamoto Y, Calvopina M, Izurieta R, Villacres I, Kawahara R, Sasaki M, Yamamoto M. Colistin-resistant Escherichia coli with mcr genes in the livestock of rural small-scale farms in Ecuador. BMC Res Notes 2019; 12:121. [PMID: 30832731 PMCID: PMC6399824 DOI: 10.1186/s13104-019-4144-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 02/21/2019] [Indexed: 02/08/2023] Open
Abstract
Objective Emergence and dissemination of colistin-resistant (Co-R) bacteria harboring mobile colistin resistance genes pose a threat for treatment of infections caused by multi-drug resistant bacteria. Although the worldwide spread of Co-R bacteria is known, the precise state of Co-R bacterial dissemination in livestock of Andean countries remains unclear. Therefore, we investigated mcr-containing Co-R Escherichia coli dissemination in livestock on small-scale farms in two socioecologically different regions of Ecuador: the Amazonian rain-forest and the Pacific Coast. Results Sixty-six rectal swab samples from 34 pigs and 32 chickens, from five farms in the two regions, were assessed for the dissemination of Co-R E. coli using the selective medium CHROMagar™ COL-APSE. mcr-containing Co-R E. coli were detected in the specimens at a high rate (47%; 31/66), but the detection rates of the two regions were not statistically different. Both chickens and pigs showed similar detection rates. All Co-R E. coli isolates harbored mcr-1. The minimum inhibitory concentrations of colistin were ≥ 8 mg/L, and 67.7% (21/31) of the Co-R isolates were multi-drug resistant. Pulsed-field gel electrophoresis revealed the limited relation between isolates. Thus, we revealed the high rate of widespread dissemination of Co-R bacteria in livestock regardless of the socioecological conditions in Ecuador.
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Affiliation(s)
- Yoshimasa Yamamoto
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan.
| | | | - Ricardo Izurieta
- College of Public Health, University of South Florida, Tampa, FL, USA
| | | | | | - Masahiro Sasaki
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka, 565-0871, Japan
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26
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Harada T, Taguchi M, Kawahara R, Kanki M, Kawatsu K. Prevalence and Antimicrobial Susceptibility of Bacterial Pathogens in Ready-to-Eat Foods Retailed in Osaka Prefecture, Japan. J Food Prot 2018; 81:1450-1458. [PMID: 30080122 DOI: 10.4315/0362-028x.jfp-18-035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The potential human health risk of Japanese ready-to-eat (RTE) foods was investigated by determining the contamination by foodborne bacterial pathogens, the prevalence of opportunistic and nosocomial pathogens, and the antibiotic susceptibility of the isolates recovered from 96 samples of lightly pickled vegetables, 88 samples of Western-style desserts, and 98 samples of RTE fish and seafood products sold at retail in Osaka, Japan. Staphylococcus aureus, including isolates producing staphylococcal enterotoxin (SE), were isolated from six lightly pickled vegetable products, seven Western-style dessert products, and three RTE fish and seafood products. Of these isolates, one SEC-producing isolate from a cake was identified as community-acquired methicillin-resistant S. aureus, which was multilocus sequence type 8 and staphylococcal cassette chromosome mec type IV. Enterobacteriaceae species, including Escherichia coli, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Serratia marcescens, Citrobacter freundii-Citrobacter braakii, and/or the Enterobacter cloacae complex, were isolated from 92 (95.8%) of the lightly pickled vegetable products, 39 (44.3%) of the Western-style dessert products, and 74 (75.5%) of the RTE fish and seafood products. On the basis of the antimicrobial susceptibility profiles of the opportunistic and nosocomial Enterobacteriaceae pathogens, the third-generation cephalosporin, fosfomycin, and quinolone resistance determinants were investigated. We detected AmpC products of the CIT group and a qnrB9 product in 5 and 1 C. freundii-C. braakii isolates, respectively, and fosA gene products in 15 E. cloacae complex isolates. Because RTE foods are consumed without a heating process, the spread of bacterial pathogens from contaminated food to human consumers is possible. RTE foods must be handled using hygienic procedures from the processing steps to the table to reduce the prevalence of potentially pathogenic or pathogenic bacteria and to prevent bacterial growth.
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Affiliation(s)
- Tetsuya Harada
- Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Masumi Taguchi
- Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Ryuji Kawahara
- Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Masashi Kanki
- Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Kentaro Kawatsu
- Osaka Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
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27
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Nakayama T, Kumeda Y, Kawahara R, Yamaguchi T, Yamamoto Y. Carriage of colistin-resistant, extended-spectrum β-lactamase-producing Escherichia coli harboring the mcr-1 resistance gene after short-term international travel to Vietnam. Infect Drug Resist 2018; 11:391-395. [PMID: 29559800 PMCID: PMC5856025 DOI: 10.2147/idr.s153178] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Background Due to increasing colistin usage, the dissemination of the colistin-resistant gene mcr-1 has been increasingly investigated. The aim of this study was to determine whether a traveler on a short-term international trip to a developing country could bring mcr-1 back to their home country. Materials and methods Thirty-four travel events from Japan to Vietnam encompassing 19 travelers were assessed. A fecal specimen was collected from each traveler before and after each travel event and was inoculated on CHROMagar containing cefotaxime (CTX). Three to seven colonies exhibiting the characteristics of Escherichia coli were collected. Susceptibility to antibiotics and extended-spectrum β-lactamase (ESBL) production were determined by the disk diffusion method and the double-disk synergy test, respectively. ESBL-encoding genes were genotyped, and phylogenetic groupings were determined by multiplex polymerase chain reaction (PCR). The presence of mcr-1 was also confirmed by PCR and sequencing. Results A total of 175 ESBL-producing E. coli isolated before and up to 2 weeks after traveling to Vietnam were analyzed. Genotyping of ESBL-producing isolates showed that blaCTX-M-1/blaTEM (27.7%) and blaCTX-M-9 (45.9%) were the most prevalent genotypes, while the most frequently detected phylogenetic group was D (41.9%) followed by B2 (23.0%). In a significant number of travel events, travelers brought ESBL-producing E. coli back to Japan and three events by three travelers carried mcr-1. ESBL-producing E. coli isolates harboring mcr-1 were identified as those carrying both blaCTX-M-14 or blaCTX-M-55 and mcr-1. Conclusion Using Vietnam as an example, we have shown that even a short-term trip to some countries may result in ESBL-producing mcr-1-positive E. coli carriage by international travelers.
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Affiliation(s)
- Tatsuya Nakayama
- Center for Global Initiatives, Osaka University, Suita, Osaka, Japan.,Division of Biomedical Food Research, National Institute of Health Science, Kawasaki, Kanagawa, Japan
| | - Yuko Kumeda
- Center for Microorganism Control, Osaka Prefecture University, Sakai, Osaka, Japan
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan
| | - Takahiro Yamaguchi
- Division of Microbiology, Osaka Institute of Public Health, Osaka, Japan.,Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Yoshimasa Yamamoto
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
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28
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Nakayama T, Kawahara R, Kumeda Y, Yamamoto Y. Extended-spectrum β-lactamase-producing Escherichia coli contributes to the survival of cefotaxime-susceptible E. coli under high concentrations of cefotaxime by acquisition of increased AmpC expression. FEMS Microbiol Lett 2018; 365:4816729. [PMID: 29361027 DOI: 10.1093/femsle/fny009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 01/17/2018] [Indexed: 12/11/2022] Open
Abstract
Extended-spectrum β-lactamase-producing Escherichia coli (ESBL-E) are becoming increasingly widespread in Vietnam. Antibiotics are detected in many Vietnamese foods; however, the effect of ESBL-E and antibiotic consumption on intestinal bacteria has not been studied sufficiently. Here, we investigated the effect of oral administration of ESBL-E (TB19) and cefotaxime on luminescence-emitting cefotaxime-sensitive E. coli (X14). Mice were given water containing TB19 and then received three injections of 1.0 × 108 CFU of X14 harboring a luciferase gene. The mice were administered 100 μg of cefotaxime and luminescent bacteria were monitored over 24 h, following which luminescent bacteria were isolated from mouse feces. Luminescence continued to be detected in mice administered TB19 24 h after cefotaxime ingestion. Fecal analysis revealed two types of luminescent colonies: cefoxitin-resistant E. coli (X14-R) and Pseudomonas aeruginosa. Pulse-field gel electrophoresis confirmed that X14-R was a clonal strain of X14, suggesting that X14 survived using ESBLs originating from TB19 and acquired cefoxitin resistance due to cefotaxime consumption. Moreover, in vitro analysis of X14 indicated that expression of the ampC gene was upregulated by cefotaxime. Overall, ESBL-E and cefotaxime promoted the expansion of cefoxitin-resistant E. coli in the absence of plasmid-mediated gene transfer.
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Affiliation(s)
- Tatsuya Nakayama
- Division of Biomedical Food Research, National Institute of Health Science, Tokyo 158-8501, Japan.,Center for Global Initiatives, Osaka University, Suita, Osaka 565-0871, Japan
| | - Ryuji Kawahara
- Department of Bacteriology, Osaka Institute of Public Health, Higashinari, Osaka 537-0025, Japan
| | - Yuko Kumeda
- Research Center for Microbial Control, Osaka Prefecture University, Osaka 565-8531, Japan
| | - Yoshimasa Yamamoto
- Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka 565-0871, Japan
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Yamamoto N, Asada R, Kawahara R, Hagiya H, Akeda Y, Shanmugakani R, Yoshida H, Yukawa S, Yamamoto K, Takayama Y, Ohnishi H, Taniguchi T, Matsuoka T, Matsunami K, Nishi I, Kase T, Hamada S, Tomono K. Prevalence of, and risk factors for, carriage of carbapenem-resistant Enterobacteriaceae among hospitalized patients in Japan. J Hosp Infect 2017; 97:212-217. [DOI: 10.1016/j.jhin.2017.07.015] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 07/15/2017] [Indexed: 01/22/2023]
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Nagano N, Nakaya H, Nagata M, Nishizawa T, Kawahara R, Matsumoto T, Oana K, Kawakami Y. Characterization of first hemin-requiring Pseudomonas aeruginosa small-colony variants from the blood of an octogenarian male-patient with double pneumonitis. J Infect Chemother 2017; 23:852-855. [PMID: 28673558 DOI: 10.1016/j.jiac.2017.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 05/26/2017] [Accepted: 06/02/2017] [Indexed: 10/19/2022]
Abstract
A hemin-requiring Pseudomonas aeruginosa small-colony variant (SCV) was isolated from the blood of an octogenarian male-patient with double pneumonitis. The isolate was capable of growing on both sheep blood and chocolate agars but not on MacConkey agars without blood ingredient. Furthermore, the isolate revealed to grow only around the X-factor impregnated discs when examined using the X and V disc strips. However, not only RapID-NH system but also the VITEK2 system failed to identify the isolate. The isolate was finally identified as P. aeruginosa by the sequence of the 16S rRNA genes and the MALDI-TOF MS analysis. Interestingly, the isolate represented positive reaction for δ-aminolaevulinic acid (ALA)-test despite the requirement of hemin. Detailed analysis indicated that the isolate produced protoporphyrin IX from ALA. Therefore, the reason for the hemin dependence was deduced the dysfunction of hemH-encoded ferrochelatase behaving at the end of biosynthetic pathway of heme. However, the genetic analysis of hemH gene demonstrated no variations of both the DNA and the amino-acid sequences. To the best of our knowledge, this is the first clinical isolation of a hemin-dependent P. aeruginosa SCV from blood.
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Affiliation(s)
- Natsumi Nagano
- Department of Clinical Laboratory, Kansai Medical University Medical Center, Moriguchi 570-8507, Japan
| | - Hideo Nakaya
- Department of Clinical Laboratory, Kansai Medical University Medical Center, Moriguchi 570-8507, Japan
| | - Megumi Nagata
- Department of Clinical Laboratory, Kansai Medical University Medical Center, Moriguchi 570-8507, Japan
| | - Toru Nishizawa
- Instructor of Rheumatology and Clinical Immunology, Kansai Medical University Medical Center, Moriguchi 570-8507, Japan
| | - Ryuji Kawahara
- Division of Microbiology, Osaka Institute of Public Health, Osaka 537-0025, Japan
| | - Takehisa Matsumoto
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Maebashi 371-8543, Japan
| | - Kozue Oana
- Division of Infection Control and Microbiological Regulation, Department of Health and Medical Sciences, Shinshu University Graduate School of Medicine, Matsumoto 390-8621, Japan; Division of Clinical Microbiology, Department of Biomedical Laboratory Sciences, School of Health Sciences, Shinshu University School of Medicine, Matsumoto 390-8621, Japan
| | - Yoshiyuki Kawakami
- Division of Infection Control and Microbiological Regulation, Department of Health and Medical Sciences, Shinshu University Graduate School of Medicine, Matsumoto 390-8621, Japan; Division of Clinical Microbiology, Department of Biomedical Laboratory Sciences, School of Health Sciences, Shinshu University School of Medicine, Matsumoto 390-8621, Japan.
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31
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Yamamoto N, Kawahara R, Akeda Y, Shanmugakani RK, Yoshida H, Hagiya H, Hara N, Nishi I, Yukawa S, Asada R, Sasaki Y, Maeda K, Sakamoto N, Hamada S, Tomono K. Development of selective medium for IMP-type carbapenemase-producing Enterobacteriaceae in stool specimens. BMC Infect Dis 2017; 17:229. [PMID: 28340557 PMCID: PMC5366124 DOI: 10.1186/s12879-017-2312-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Accepted: 03/08/2017] [Indexed: 01/07/2023] Open
Abstract
Background Identification of carbapenemase-producing Enterobacteriaceae (CPE) in faecal specimens is challenging. This fact is particularly critical because low-level carbapenem-resistant organisms such as IMP-producing CPE are most prevalent in Japan. We developed a modified selective medium more suitable for IMP-type CPE. Methods Fifteen reference CPE strains producing different types of β-lactamases were used to evaluate the commercially available CHROMagar KPC and chromID CARBA as well as the newly prepared MC-ECC medium (CHROMagar ECC supplemented with meropenem, cloxacillin, and ZnSO4) and M-ECC medium (CHROMagar ECC supplemented with meropenem and ZnSO4). A total of 1035 clinical samples were then examined to detect CPE using chromID CARBA and M-ECC medium. Results All tested strains producing NDM-, KPC-, and OXA-48-carbapenemases were successfully cultured in the media employed. Although most of the IMP-positive strains did not grow in CHROMagar KPC, chromID CARBA, or MC-ECC, all tested strains grew on M-ECC. When faecal samples were applied to the media, M-ECC medium allowed the best growth of IMP-type CPE with a significantly higher sensitivity (99.3%) than that of chromID CARBA (13.9%). Conclusions M-ECC medium was determined as the most favourable selective medium for the detection of IMP-type CPE as well as other types of CPE. Electronic supplementary material The online version of this article (doi:10.1186/s12879-017-2312-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Norihisa Yamamoto
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Ryuji Kawahara
- Department of Bacteriology, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | - Yukihiro Akeda
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan. .,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan.
| | - Rathina Kumar Shanmugakani
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Hisao Yoshida
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Hideharu Hagiya
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Naohiro Hara
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Isao Nishi
- Laboratory for Clinical Investigation, Osaka University Hospital, Osaka, Japan
| | - Satomi Yukawa
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | | | - Yumi Sasaki
- Clinical Laboratory Department Section 1, The Research Foundation for Microbial Diseases of Osaka University, Osaka, Japan
| | - Kazuhiro Maeda
- Clinical Laboratory Department Section 1, The Research Foundation for Microbial Diseases of Osaka University, Osaka, Japan
| | - Noriko Sakamoto
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Shigeyuki Hamada
- Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Kazunori Tomono
- Department of Infection Control and Prevention, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Yamamoto N, Yukawa S, Hagiya H, Yoshida HI, Kani RKS, Kawahara R, Akeda Y, Tomono K. The Comparison of Risk Factors of CRE Colonization Between Hospitals. Open Forum Infect Dis 2017. [DOI: 10.1093/ofid/ofx163.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nakayama T, Ha NC, Quoc Le P, Kawahara R, Kumeda Y, Sumimura Y, Yamamoto Y. Consumption of edible ice contaminated with Acinetobacter, Pseudomonas, and Stenotrophomonas is a risk factor for fecal colonization with extended-spectrum β-lactamase-producing Escherichia coli in Vietnam. J Water Health 2017; 15:813-822. [PMID: 29040083 DOI: 10.2166/wh.2017.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Although Vietnamese residents frequently harbor extended-spectrum β-lactamase-producing Escherichia coli (ESBL-E), it is unclear which foods/beverages are risk factors for acquiring these bacteria. The aim of this study was to evaluate the frequency with which edible ice served in restaurants is contaminated with antibiotic-resistant bacteria, and thereby clarify whether this product poses a risk for ESBL-E carriage in humans. Ice from restaurants in Vietnam and Japan was screened for bacteria capable of growing on agar containing cefotaxime (BG-CTX). Of the 119 BG-CTX strains isolated in Vietnam, 40%, 39%, and 12% were identified as Pseudomonas spp., Acinetobacter spp., and Stenotrophomonas maltophilia, respectively. Meanwhile, of the six such strains isolated in Japan, five were identified as Acinetobacter spp. and one as Pseudomonas spp. More than 10% of the Acinetobacter isolates exhibited cefotaxime, ceftazidime, and sulfa/trimethoprim resistance, while 21% of Pseudomonas and 14% of S. maltophilia isolates exhibited meropenem and sulfa/trimethoprim resistance, respectively. Subsequent multiplex polymerase chain reaction (PCR) analyses detected ESBL-encoding genes in 10% of the BG-CTX. Notably, feces harvested from mice administered water contaminated with BG-CTX contained E. coli harboring the blaCTX-M-9 gene. In conclusion, our findings indicate that consumption of contaminated edible ice is a risk factor for human ESBL-E carriage.
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Kawahara R, Jersild C, Ditzel J. Effect of rejuvenation of blood on 2,3-diphosphoglycerate, hemoglobin-oxygen affinity and filtrability of red blood cells. Clin Hemorheol Microcirc 2016. [DOI: 10.3233/ch-1985-5406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- R. Kawahara
- Section of Endocrinology, Department of Medicine and Department of Clinical Immunology, Aalborg Regional Hospital, Denmark
| | - C. Jersild
- Section of Endocrinology, Department of Medicine and Department of Clinical Immunology, Aalborg Regional Hospital, Denmark
| | - J. Ditzel
- Section of Endocrinology, Department of Medicine and Department of Clinical Immunology, Aalborg Regional Hospital, Denmark
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35
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Harada T, Dang VC, Nguyen DP, Nguyen TAD, Sakamoto M, Ohkuma M, Motooka D, Nakamura S, Uchida K, Jinnai M, Yonogi S, Kawahara R, Kanki M, Kawai T, Kumeda Y, Yamamoto Y. Enterococcus saigonensis sp. nov., isolated from retail chicken meat and liver. Int J Syst Evol Microbiol 2016; 66:3779-3785. [DOI: 10.1099/ijsem.0.001264] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Tetsuya Harada
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Van Chinh Dang
- Institute of Public Health, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City, Vietnam
| | - Do Phuc Nguyen
- Institute of Public Health, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City, Vietnam
| | - Thi Anh Dao Nguyen
- Institute of Public Health, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City, Vietnam
| | - Mitsuo Sakamoto
- Microbe Division/Japan Collection of Microorganisms, RIKEN BioResource Center, Tsukuba, Ibaraki 305-0074, Japan
| | - Moriya Ohkuma
- Microbe Division/Japan Collection of Microorganisms, RIKEN BioResource Center, Tsukuba, Ibaraki 305-0074, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Shota Nakamura
- Department of Infection Metagenomics, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kotaro Uchida
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Michio Jinnai
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Shinya Yonogi
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Ryuji Kawahara
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Masashi Kanki
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Takao Kawai
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
| | - Yuko Kumeda
- Osaka Prefectural Institute of Public Health, Osaka 537-0025, Japan
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36
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Shimizu R, Kawahara R, Hanada R, Okuno S, Yamasaki K, Tamai Y, Kawahara H. A combination of ultrasound-guided rectus sheath and transversus abdominis plane blocks is superior to either block alone for pain control after gynecological transumbilical single incision laparoscopic surgery. CLIN EXP OBSTET GYN 2016. [DOI: 10.12891/ceog2142.2016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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37
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Nakama R, Shingaki A, Miyazato H, Higa R, Nagamoto C, Hamamoto K, Ueda S, Hachiman T, Touma Y, Miyagi K, Kawahara R, Toyosato T, Hirai I. Current status of extended spectrum β-lactamase-producing Escherichia coli, Klebsiella pneumoniae and Proteus mirabilis in Okinawa prefecture, Japan. J Infect Chemother 2016; 22:281-6. [DOI: 10.1016/j.jiac.2016.01.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 01/12/2016] [Accepted: 01/15/2016] [Indexed: 11/25/2022]
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38
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Harada T, Yamane R, Dang VC, Nguyen DP, Nguyen TAD, Jinnai M, Yonogi S, Kawahara R, Kanki M, Kawai T, Kawatsu K, Kumeda Y, Isegawa Y, Yamamoto Y. Prevalence and Antimicrobial Susceptibility of Enterobacteriaceae Isolated from Retail Pepper in Vietnam. J Food Prot 2016; 80:716-724. [PMID: 28350183 DOI: 10.4315/0362-028x.jfp-16-501] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/06/2017] [Indexed: 11/11/2022]
Abstract
To investigate the microbial quality of retail pepper in Vietnam, the enumeration and detection of Enterobacteriaceae and the screening of cefotaxime (CTX)-resistant coliforms were performed by using 84 commercial samples. Although Enterobacteriaceae were isolated from 78 samples, the number of Enterobacteriaceae was lower than 1.0 log CFU/g in 46 samples. For the detection of Enterobacteriaceae with the International Organization for Standardization methods, Salmonella spp., Escherichia coli, Klebsiella pneumoniae, Cronobacter sakazakii, and Enterobacter cloacae complex were isolated from 5, 12, 36, 19, and 30 samples, respectively. During screening of CTX-resistant coliforms, K. pneumoniae, C. sakazakii, and E. cloacae complex were isolated from 8, 1, and 21 samples, respectively. Seven K. pneumoniae and seven E. cloacae complex isolates obtained in the screening of CTX-resistant coliforms were resistant to at least one of the three third-generation cephalosporins (CTX, ceftazidime, and cefpodoxime). Moreover, one E. cloacae complex cluster IV and all K. pneumoniae isolates were positive for extended-spectrum β-lactamase genes or plasmid-mediated AmpC β-lactamase genes or both. Additionally, two extended-spectrum β-lactamase-producing K. pneumoniae isolates and one AmpC β-lactamase-producing E. cloacae complex cluster IV isolate were positive for the plasmid-mediated quinolone resistance determinants and also had amino acid alterations in the quinolone resistance-determining regions of GyrA and ParC. Furthermore, 10 E. cloacae complex isolates were positive for the plasmid-mediated fosfomycin resistance gene fosA. As pepper is often consumed without a heating process, the possible spread to humans of foodborne, opportunistic, and nosocomial infection pathogens or resistance genes from foods prepared or seasoned with pepper cannot be excluded. Therefore, it is necessary to handle pepper by using hygienic conditions during the cultivation, harvesting and processing steps.
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Affiliation(s)
- Tetsuya Harada
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Ryoko Yamane
- Mukogawa Women's University, 6-46 Ikebiraki, Nishinomiya, Hyogo 663-8558, Japan
| | - Van Chinh Dang
- Institute of Public Health, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City 751301, Vietnam; and
| | - Do Phuc Nguyen
- Institute of Public Health, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City 751301, Vietnam; and
| | - Thi Anh Dao Nguyen
- Institute of Public Health, 159 Hung Phu, District 8, Ward 8, Ho Chi Minh City 751301, Vietnam; and
| | - Michio Jinnai
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Shinya Yonogi
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Ryuji Kawahara
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Masashi Kanki
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Takao Kawai
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Kentaro Kawatsu
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Yuko Kumeda
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan
| | - Yuji Isegawa
- Mukogawa Women's University, 6-46 Ikebiraki, Nishinomiya, Hyogo 663-8558, Japan
| | - Yoshimasa Yamamoto
- Osaka Prefectural Institute of Public Health, Nakamichi 1-3-69, Higashinari-ku, Osaka 537-0025, Japan.,Global Collaboration Center, Osaka University, 2-7 Yamadaoka, Suita, Osaka 565-0871, Japan
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Kanayama A, Kawahara R, Yamagishi T, Goto K, Kobaru Y, Takano M, Morisada K, Ukimura A, Kawanishi F, Tabuchi A, Matsui T, Oishi K. Successful control of an outbreak of GES-5 extended-spectrum β-lactamase-producing Pseudomonas aeruginosa in a long-term care facility in Japan. J Hosp Infect 2016; 93:35-41. [PMID: 26897557 DOI: 10.1016/j.jhin.2015.12.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 12/29/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND Little is known about multidrug-resistant Pseudomonas aeruginosa (MDRP) outbreaks in long-term care facilities (LTCFs). AIM To describe an MDRP outbreak in an LTCF and to clarify risk factors for MDRP acquisition. METHODS Patients who were positive for MDRP at an LTCF from January 2013 to January 2014 were analysed. A descriptive analysis, a case-control study, and a microbiological analysis were performed. FINDINGS A total of 23 MDRP cases were identified, 16 of which were confirmed in sputum samples. Healthcare workers were observed violating hand hygiene procedures when performing oral, wound, and genital care. Nasogastric tube and oxygen mask use was associated with MDRP acquisition in the respiratory tract, which might have been confounded by poor hand hygiene. Sharing unhygienic devices, such as portable oral suction devices for oral care, and washing bottles and ointments for wound and genital care with inadequate disinfection could explain the transmission of MDRP in some cases. Isolates from 11 patients were found to be indistinguishable or closely related by pulsed-field gel electrophoresis and harbouring the blaGES-5 gene. Subsequent enhanced infection control measures were supported by nearby hospitals and a local public health centre. No additional cases were identified for a year after the last case occurred in January 2014. CONCLUSION An outbreak of MDRP with an antimicrobial resistance gene, blaGES-5, occurred in a Japanese LTCF. It was successfully controlled by enhanced infection control measures, which neighbouring hospitals and a local public health centre supported.
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Affiliation(s)
- A Kanayama
- Field Epidemiology Training Program, National Institute of Infectious Diseases, Tokyo, Japan; Department of Global Infectious Diseases and Tropical Medicine, National Defense Medical College, Saitama, Japan
| | - R Kawahara
- Division of Bacteriology, Osaka Prefectural Institute of Public Health, Osaka, Japan
| | - T Yamagishi
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan.
| | - K Goto
- Shinsei Hospital, Osaka, Japan
| | | | - M Takano
- Takatsuki City Health Center, Osaka, Japan
| | - K Morisada
- Takatsuki City Health Center, Osaka, Japan
| | - A Ukimura
- Infection Control Center, Osaka Medical College Hospital, Osaka, Japan; Department of General Internal Medicine, Osaka Medical College, Osaka, Japan
| | - F Kawanishi
- Infection Control Center, Osaka Medical College Hospital, Osaka, Japan
| | - A Tabuchi
- Field Epidemiology Training Program, National Institute of Infectious Diseases, Tokyo, Japan
| | - T Matsui
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - K Oishi
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
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Shimizu R, Kawahara R, Hanada R, Okuno S, Yamasaki K, Tamai Y, Kawahara H. A combination of ultrasound-guided rectus sheath and transversus abdominis plane blocks is superior to either block alone for pain control after gynecological transumbilical single incision laparoscopic surgery. CLIN EXP OBSTET GYN 2016; 43:504-508. [PMID: 29734536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
PURPOSE To investigate the efficacy of the combination of ultrasound-guided rectus sheath (RS) and transversus abdominis plane (TAP) blocks compared with TAP or RS block alone in gynecological single-incision laparoscopic surgery (SILS). MATERIALS AND METHODS Bilateral TAP blocks (Group A, n = 12), TAP and RS blocks (Group B, n = 12), and RS blocks (Group C, n = 12) with 40 ml ropivacaine/patient were performed for ovarian tumor SILS. The analgesic effects were evaluated using a numerical rating scale (NRS) at zero, six, 12, 24, and 48 hours post-surgery. RESULTS Umbilical pain on completion of general anesthesia was significantly less frequent in Group B (1/12) than Group A (7/12) (p = 0.03). The postoperative NRS scores were significantly lower in Group B than Group A at zero (p = 0.02) and six (p = 0.03) hours and Group C at zero (p = 0.001), six (p = 0.02), and 12 (p = 0.004) hours. CONCLUSION The combination of RS and TAP blocks reduced early postoperative pain compared with RS or TAP block alone for gynecological SILS.
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Le HV, Kawahara R, Khong DT, Tran HT, Nguyen TN, Pham KN, Jinnai M, Kumeda Y, Nakayama T, Ueda S, Yamamoto Y. Widespread dissemination of extended-spectrum β-lactamase-producing, multidrug-resistant Escherichia coli in livestock and fishery products in Vietnam. FoodContamination 2015. [DOI: 10.1186/s40550-015-0023-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Le QP, Ueda S, Nguyen TNH, Dao TVK, Van Hoang TA, Tran TTN, Hirai I, Nakayama T, Kawahara R, Do TH, Vien QM, Yamamoto Y. Characteristics of Extended-Spectrum β-Lactamase–ProducingEscherichia coliin Retail Meats and Shrimp at a Local Market in Vietnam. Foodborne Pathog Dis 2015; 12:719-25. [DOI: 10.1089/fpd.2015.1954] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | | | - Ryuji Kawahara
- Osaka Prefectural Institute of Public Health, Osaka, Japan
| | | | | | - Yoshimasa Yamamoto
- Osaka University, Osaka, Japan
- Osaka Prefectural Institute of Public Health, Osaka, Japan
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Mugita M, Kawahara R, Tamai Y, Yamasaki K, Okuno S, Hanada R, Inaoka M, Funato T. Effectiveness of ultrasound-guided transversus abdominis plane block and rectus sheath block in pain control and recovery after gynecological transumbilical single-incision laparoscopic surgery. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog18712014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Tsujimoto K, Moriya M, Yaka K, Kawasaki Y, Nakatani R, Naba I, Nakano M, Tatsumi C, Yasumoto T, Kawahara R. [Brain abscess mediated through a pulmonary arteriovenous malformation in a patient with hereditary hemorrhagic telangiectasia]. Rinsho Shinkeigaku 2014; 54:330-3. [PMID: 24807278 DOI: 10.5692/clinicalneurol.54.330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The patient is a 66-year-old man with hereditary telangiectasia. He was diagnosed with pulmonary arteriovenous malformation (PAVM), which was revealed by contrast-enhanced chest computed tomography at the age of 65. He developed headache, right homonymous hemianopsia, and right hemiparesis and was admitted to our hospital. Contrast-enhanced magnetic resonance imaging revealed multiple lesions in the left hemisphere, which indicates brain abscesses. Thus, the diagnosis of brain abscess mediated through PAVM was established. Following management with drainage and coil embolization, all neurological symptoms resolved. Therefore, coil embolization should be considered for PAVM at an early stage to prevent brain abscess, even if it is asymptomatic.
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Imoto A, Ooi Y, Edogawa S, Ogura T, Masuda D, Mohamed M, Takii M, Umegaki E, Kawahara R, Ukimura A, Higuchi K. Liver abscess caused by CTX-M-55-type extended-spectrum β-lactamase (ESBL)-producing Salmonella enteritidis. Intern Med 2014; 53:1699-703. [PMID: 25088889 DOI: 10.2169/internalmedicine.53.2407] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Liver abscesses secondary to Salmonella species are rarely described in the general population. We herein describe a case of a liver abscess caused by CTX-M-55-type extended-spectrum β-lactamase (ESBL)-producing Salmonella enteritidis, which has not been reported in the literature. A 54-year-old male was admitted due to a high fever and was clinically diagnosed with a liver abscess. Culture of the fluid from the liver abscess revealed CTX-M-55-type ESBL-producing S. enteritidis. Although the patient underwent percutaneous transhepatic abscess drainage and antibiotic therapy, he died one month later. It should be noted that liver abscesses are potentially fatal depending on the causative pathogen.
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Affiliation(s)
- Akira Imoto
- The Second Department of Internal Medicine, Osaka Medical College, Japan
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Mugita M, Kawahara R, Tamai Y, Yamasaki K, Okuno S, Hanada R, Inaoka M, Funato T. Effectiveness of ultrasound-guided transversus abdominis plane block and rectus sheath block in pain control and recovery after gynecological transumbilical single-incision laparoscopic surgery. CLIN EXP OBSTET GYN 2014; 41:627-632. [PMID: 25551952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
PURPOSE To evaluate the effectiveness of ultrasound-guided transversus abdominis plane (TAP) and rectus sheath (RS) blocks in pain management and recovery after gynecological single-incision laparoscopic surgery (SILS). MATERIALS AND METHODS Abilateral TAP block (Group A, n = 9), bilateral TAP and RS blocks (Group B, n = 10), and a bilateral RS block (Group C, n = 9) with 40 ml ropivacaine per patient were conducted in 28 patients undergoing SILS for ovarian tumors. A pain score and walking distance in a 6-minute walk test (6MWT) were examined. RESULTS Pain scores were significantly lower on postoperative day (POD) 3 than on POD 1 in Groups B (p = 0.03) and C (p = 0.02). The walking distance on POD 3 was comparable with that before surgery in Group C (p = 0.75), but shorter in Groups A (p = 0.004) and B (p = 0.02). CONCLUSIONS The RS block alone was the most effective in relieving pain and accelerating general recovery after gynecological SILS.
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Affiliation(s)
- M Mugita
- Department of Rehabilitation, Nissay Hospital, Osaka, Japan
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Adachi F, Yamamoto A, Takakura KI, Kawahara R. Occurrence of fluoroquinolones and fluoroquinolone-resistance genes in the aquatic environment. Sci Total Environ 2013; 444:508-514. [PMID: 23291652 DOI: 10.1016/j.scitotenv.2012.11.077] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 11/12/2012] [Accepted: 11/22/2012] [Indexed: 06/01/2023]
Abstract
Fluoroquinolones (FQs) have been detected in aquatic environments in several countries. Long-term exposure to low levels of antimicrobial agents provides selective pressure, which might alter the sensitivity of bacteria to antimicrobial agents in the environment. Here, we examined FQ levels and the resistance of Escherichia coli (E. coli) to FQs by phenotyping and genotyping. In the aquatic environment in Osaka, Japan, ciprofloxacin, enoxacin, enfloxacin, lomefloxacin, norfloxacin, and ofloxacin were detected in concentrations ranging from 0.1 to 570 ng L(-1). FQ-resistant E. coli were also found. Although no obvious correlation was detected between the concentration of FQs and the presence of FQ-resistant E. coli, FQ-resistant E. coli were detected in samples along with FQs, particularly ciprofloxacin and ofloxacin. Most FQ-resistant E. coli carried mutations in gyrA, parC, and parE in quinolone resistance-determining regions. No mutations in gyrB were detected in any isolates. Amino acid changes in these isolates were quite similar to those in clinical isolates. Six strains carried the plasmid-mediated quinolone resistance determinant qnrS1 and expressed low susceptibility to ciprofloxacin and nalidixic acid: the minimum inhibitory concentrations ranged from 0.25 μg mL(-1) for ciprofloxacin, and from 8 to 16 μg mL(-1) for nalidixic acid. This finding confirmed that plasmids containing qnr genes themselves did not confer full resistance to quinolones. Because plasmids are responsible for much of the horizontal gene transfer, these genes may transfer and spread in the environment. To our knowledge, this is the first report of plasmid-mediated quinolone resistance determinant qnrS1 in the aquatic environment, and this investigation provides baseline data on antimicrobial resistance profiles in the Osaka area.
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Affiliation(s)
- Fumie Adachi
- Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
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48
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Katsukawa C, Kushibiki C, Nishito A, Nishida R, Kuwabara N, Kawahara R, Otsuka N, Miyaji Y, Toyoizumi-Ajisaka H, Kamachi K. Bronchitis caused by Bordetella holmesii in a child with asthma misdiagnosed as mycoplasmal infection. J Infect Chemother 2012; 19:534-7. [PMID: 23053501 DOI: 10.1007/s10156-012-0482-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Accepted: 09/09/2012] [Indexed: 11/25/2022]
Abstract
We report a case of a bronchitis caused by Bordetella holmesii in a 2-year-old girl with asthma. The patient had a moderate fever and productive cough, and her condition was initially diagnosed as mycoplasmal bronchitis on the basis of her clinical symptoms and rapid serodiagnosis of mycoplasmal infection. She was treated with a bronchodilator and clarithromycin, which resulted in complete recovery. However, after the initial diagnosis, nucleic acid amplification tests of her sputum showed the absence of both Mycoplasma pneumoniae and Bordetella pertussis infections. Sputum culture showed the presence of a slow-growing, gram-negative bacillus in pure culture on Bordetella agar plates; the bacillus was later identified as B. holmesii. B. holmesii infection is rare in immunocompetent children; however, the organism is a true pathogen that can cause bronchitis in young children with asthma.
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Affiliation(s)
- Chihiro Katsukawa
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Japan
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Bi A, Nakajima C, Fukushima Y, Tamaru A, Sugawara I, Kimura A, Kawahara R, Hu Z, Suzuki Y. A rapid loop-mediated isothermal amplification assay targeting hspX for the detection of Mycobacterium tuberculosis complex. Jpn J Infect Dis 2012; 65:247-51. [PMID: 22627308 DOI: 10.7883/yoken.65.247] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A rapid, simple, and low-cost diagnostic tool for tuberculosis (TB) detection is urgently needed in countries with a high TB burden. Here, we report a novel loop-mediated isothermal amplification (LAMP) assay targeting the hspX gene for the rapid detection of Mycobacterium tuberculosis, M. bovis, M. africanum, and M. microti. The specificity of this assay was evaluated using 4 reference strains of Mycobacterium tuberculosis complex (MTC), 22 species of non-tuberculous mycobacteria (NTM), 7 non-mycobacterial species, and 50 clinical M. tuberculosis isolates. All the reference MTC strains and M. tuberculosis clinical isolates were successfully detected by this method, and there were no false-positive results with NTM or non-mycobacterial species, which demonstrates the high specificity of this assay for MTC. The detection limit was 10 copies of MTC genome within 27 min, and the detection speed of this assay was higher than that of any other isothermal methods reported so far. Because of its speed, simplicity, sensitivity, specificity, and inexpensiveness, the TB hspX LAMP assay is a potential gene diagnostic method for TB detection in developing countries with a high TB burden.
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Affiliation(s)
- Aixiao Bi
- Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
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Tamaru A, Nakajima C, Wada T, Wang Y, Inoue M, Kawahara R, Maekura R, Ozeki Y, Ogura H, Kobayashi K, Suzuki Y, Matsumoto S. Dominant incidence of multidrug and extensively drug-resistant specific Mycobacterium tuberculosis clones in Osaka Prefecture, Japan. PLoS One 2012; 7:e42505. [PMID: 22952596 PMCID: PMC3432034 DOI: 10.1371/journal.pone.0042505] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 07/09/2012] [Indexed: 11/19/2022] Open
Abstract
Infection and transmission of multidrug-resistant Mycobacterium tuberculosis (MDR-Mtb) and extensively drug-resistant M. tuberculosis (XDR-Mtb) is a serious health problem. We analyzed a total of 1,110 Mtb isolates in Osaka Prefecture and neighboring areas from April 2000 to March 2009. A total of 89 MDR-Mtb were identified, 36 (48.5%) of which were determined to be XDR-Mtb. Among the 89 MDR-Mtb isolates, 24 (27.0%) phylogenetically distributed into six clusters based on mycobacterial interspersed repetitive units-various number of tandem repeats (MIRU-VNTR) typing. Among these six clusters, the MIRU-VNTR patterns of four (OM-V02, OM-V03, OM-V04, and OM-V06) were only found for MDR-Mtb. Further analysis revealed that all isolates belonging to OM-V02 and OM-V03, and two isolates from OM-V04 were clonal. Importantly such genotypes were not observed for drug-sensitive isolates. These suggest that few but transmissible clones can transmit after acquiring multidrug resistance and colonize even in a country with a developed, well-organized healthcare system.
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Affiliation(s)
- Aki Tamaru
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, Osaka, Osaka, Japan.
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