Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China
Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Xi Li [verfasserIn] Ying Fu [verfasserIn] Mengyuan Shen [verfasserIn] Danyan Huang [verfasserIn] Xiaoxing Du [verfasserIn] Qingfeng Hu [verfasserIn] Yonglie Zhou [verfasserIn] Dairong Wang [verfasserIn] Yunsong Yu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: Antimicrobial Resistance and Infection Control - BMC, 2012, 7(2018), 1, Seite 9 |
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| Übergeordnetes Werk: |
volume:7 ; year:2018 ; number:1 ; pages:9 |
| Links: |
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| DOI / URN: |
10.1186/s13756-018-0349-6 |
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| Katalog-ID: |
DOAJ053230469 |
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| 520 | |a Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. | ||
| 650 | 4 | |a Enterobacteriaceae | |
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| 700 | 0 | |a Dairong Wang |e verfasserin |4 aut | |
| 700 | 0 | |a Yunsong Yu |e verfasserin |4 aut | |
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10.1186/s13756-018-0349-6 doi (DE-627)DOAJ053230469 (DE-599)DOAJ3ee5b52fc6994cea8a2e2a65cf02b2ad DE-627 ger DE-627 rakwb eng RC109-216 Xi Li verfasserin aut Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. Enterobacteriaceae Carbapenem resistance bla NDM-5 IncX3 type plasmid Infectious and parasitic diseases Ying Fu verfasserin aut Mengyuan Shen verfasserin aut Danyan Huang verfasserin aut Xiaoxing Du verfasserin aut Qingfeng Hu verfasserin aut Yonglie Zhou verfasserin aut Dairong Wang verfasserin aut Yunsong Yu verfasserin aut In Antimicrobial Resistance and Infection Control BMC, 2012 7(2018), 1, Seite 9 (DE-627)718716140 (DE-600)2666706-X 20472994 nnns volume:7 year:2018 number:1 pages:9 https://doi.org/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/article/3ee5b52fc6994cea8a2e2a65cf02b2ad kostenfrei http://link.springer.com/article/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/toc/2047-2994 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2018 1 9 |
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10.1186/s13756-018-0349-6 doi (DE-627)DOAJ053230469 (DE-599)DOAJ3ee5b52fc6994cea8a2e2a65cf02b2ad DE-627 ger DE-627 rakwb eng RC109-216 Xi Li verfasserin aut Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. Enterobacteriaceae Carbapenem resistance bla NDM-5 IncX3 type plasmid Infectious and parasitic diseases Ying Fu verfasserin aut Mengyuan Shen verfasserin aut Danyan Huang verfasserin aut Xiaoxing Du verfasserin aut Qingfeng Hu verfasserin aut Yonglie Zhou verfasserin aut Dairong Wang verfasserin aut Yunsong Yu verfasserin aut In Antimicrobial Resistance and Infection Control BMC, 2012 7(2018), 1, Seite 9 (DE-627)718716140 (DE-600)2666706-X 20472994 nnns volume:7 year:2018 number:1 pages:9 https://doi.org/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/article/3ee5b52fc6994cea8a2e2a65cf02b2ad kostenfrei http://link.springer.com/article/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/toc/2047-2994 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2018 1 9 |
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10.1186/s13756-018-0349-6 doi (DE-627)DOAJ053230469 (DE-599)DOAJ3ee5b52fc6994cea8a2e2a65cf02b2ad DE-627 ger DE-627 rakwb eng RC109-216 Xi Li verfasserin aut Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. Enterobacteriaceae Carbapenem resistance bla NDM-5 IncX3 type plasmid Infectious and parasitic diseases Ying Fu verfasserin aut Mengyuan Shen verfasserin aut Danyan Huang verfasserin aut Xiaoxing Du verfasserin aut Qingfeng Hu verfasserin aut Yonglie Zhou verfasserin aut Dairong Wang verfasserin aut Yunsong Yu verfasserin aut In Antimicrobial Resistance and Infection Control BMC, 2012 7(2018), 1, Seite 9 (DE-627)718716140 (DE-600)2666706-X 20472994 nnns volume:7 year:2018 number:1 pages:9 https://doi.org/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/article/3ee5b52fc6994cea8a2e2a65cf02b2ad kostenfrei http://link.springer.com/article/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/toc/2047-2994 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2018 1 9 |
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10.1186/s13756-018-0349-6 doi (DE-627)DOAJ053230469 (DE-599)DOAJ3ee5b52fc6994cea8a2e2a65cf02b2ad DE-627 ger DE-627 rakwb eng RC109-216 Xi Li verfasserin aut Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China 2018 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. Enterobacteriaceae Carbapenem resistance bla NDM-5 IncX3 type plasmid Infectious and parasitic diseases Ying Fu verfasserin aut Mengyuan Shen verfasserin aut Danyan Huang verfasserin aut Xiaoxing Du verfasserin aut Qingfeng Hu verfasserin aut Yonglie Zhou verfasserin aut Dairong Wang verfasserin aut Yunsong Yu verfasserin aut In Antimicrobial Resistance and Infection Control BMC, 2012 7(2018), 1, Seite 9 (DE-627)718716140 (DE-600)2666706-X 20472994 nnns volume:7 year:2018 number:1 pages:9 https://doi.org/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/article/3ee5b52fc6994cea8a2e2a65cf02b2ad kostenfrei http://link.springer.com/article/10.1186/s13756-018-0349-6 kostenfrei https://doaj.org/toc/2047-2994 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 7 2018 1 9 |
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Elektronische Aufsätze |
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Xi Li |
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10.1186/s13756-018-0349-6 |
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verfasserin |
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dissemination of bla ndm-5 gene via an incx3-type plasmid among non-clonal escherichia coli in china |
| callnumber |
RC109-216 |
| title_auth |
Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China |
| abstract |
Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. |
| abstractGer |
Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. |
| abstract_unstemmed |
Abstract Background The emergence and spread of New Delhi metallo-β-lactamase-producing Enterobacteriaceae has been a serious challenge to manage in the clinic due to its rapid dissemination of multi-drug resistance worldwide. As one main type of carbapenemases, New Delhi metallo-β-lactamase (NDM)is able to confer resistance to almost all β-lactams, including carbapenems, in Enterobacteriaceae. Recently, New Delhi metallo-β-lactamase-5 attracted extensive attention because of increased resistance to carbapenems and widespread dissemination. However, the dissemination mechanism of bla NDM-5 gene remains unclear. Methods A total of 224 carbapenem-resistant Enterobacteriaceae isolates (CRE) were collected from different hospitals in Zhejiang province. NDM-5-positive isolates were identified and subjected to genotyping, susceptibility testing, and clinical data analysis. We established the genetic location of bla NDM-5 with southern blot hybridisation, and analysed plasmids containing bla NDM-5 with filter mating and DNA sequencing. Results Eleven New Delhi metallo-β-lactamase-5 (NDM-5)-producing strains were identified, including 9 Escherichia coli strains, 1 Klebsiella pneumoniae strain, and 1 Citrobacter freundii strain. No epidemiological links for E. coli isolates were identified by multilocus sequence typing (MLST) and pulsed-field gel electrophoresis (PFGE). S1-PFGE and southern blot suggested that the bla NDM-5 gene was located on a 46-kb IncX3-type plasmid in all isolates. Nine of the 11 isolates (81.8%) tested could successfully transfer their carbapenem-resistant phenotype to E. coli strain C600. Moreover, sequence analysis further showed that this plasmid possessed high sequence similarity to most of previously reported bla NDM-5-habouring plasmids in China. Conclusion The present data in this study showed the IncX3 type plasmid played an important role in the dissemination of bla NDM-5 in Enterobacteriaceae. In addition, to the best of our knowledge, this report is the first to isolate both E. coli and C. freundii strains carrying bla NDM-5 from one single patient, which further indicated the possibility of bla NDM-5 transmission among diverse species. Close surveillance is urgently needed to monitor the further dissemination of NDM-5-producing isolates. |
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Dissemination of bla NDM-5 gene via an IncX3-type plasmid among non-clonal Escherichia coli in China |
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Ying Fu Mengyuan Shen Danyan Huang Xiaoxing Du Qingfeng Hu Yonglie Zhou Dairong Wang Yunsong Yu |
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