Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China

Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children. Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Fen Pan [verfasserIn] Qi Xu [verfasserIn] Hong Zhang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	carbapenem-resistant Klebsiella aerogenes NDM-5 ST4 plasmid IncX3

Übergeordnetes Werk:	In: Frontiers in Public Health - Frontiers Media S.A., 2013, 9(2021)
Übergeordnetes Werk:	volume:9 ; year:2021

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3389/fpubh.2021.621527

Katalog-ID:	DOAJ016249097

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520			\|a Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children.
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allfields	10.3389/fpubh.2021.621527 doi (DE-627)DOAJ016249097 (DE-599)DOAJ808c0af3d99f4e15aa88a9bfb5e3f332 DE-627 ger DE-627 rakwb eng RA1-1270 Fen Pan verfasserin aut Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children. carbapenem-resistant Klebsiella aerogenes NDM-5 ST4 plasmid IncX3 Public aspects of medicine Qi Xu verfasserin aut Hong Zhang verfasserin aut In Frontiers in Public Health Frontiers Media S.A., 2013 9(2021) (DE-627)742224589 (DE-600)2711781-9 22962565 nnns volume:9 year:2021 https://doi.org/10.3389/fpubh.2021.621527 kostenfrei https://doaj.org/article/808c0af3d99f4e15aa88a9bfb5e3f332 kostenfrei https://www.frontiersin.org/articles/10.3389/fpubh.2021.621527/full kostenfrei https://doaj.org/toc/2296-2565 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_2014 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 9 2021
spelling	10.3389/fpubh.2021.621527 doi (DE-627)DOAJ016249097 (DE-599)DOAJ808c0af3d99f4e15aa88a9bfb5e3f332 DE-627 ger DE-627 rakwb eng RA1-1270 Fen Pan verfasserin aut Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children. carbapenem-resistant Klebsiella aerogenes NDM-5 ST4 plasmid IncX3 Public aspects of medicine Qi Xu verfasserin aut Hong Zhang verfasserin aut In Frontiers in Public Health Frontiers Media S.A., 2013 9(2021) (DE-627)742224589 (DE-600)2711781-9 22962565 nnns volume:9 year:2021 https://doi.org/10.3389/fpubh.2021.621527 kostenfrei https://doaj.org/article/808c0af3d99f4e15aa88a9bfb5e3f332 kostenfrei https://www.frontiersin.org/articles/10.3389/fpubh.2021.621527/full kostenfrei https://doaj.org/toc/2296-2565 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_2014 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 9 2021
allfields_unstemmed	10.3389/fpubh.2021.621527 doi (DE-627)DOAJ016249097 (DE-599)DOAJ808c0af3d99f4e15aa88a9bfb5e3f332 DE-627 ger DE-627 rakwb eng RA1-1270 Fen Pan verfasserin aut Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children. carbapenem-resistant Klebsiella aerogenes NDM-5 ST4 plasmid IncX3 Public aspects of medicine Qi Xu verfasserin aut Hong Zhang verfasserin aut In Frontiers in Public Health Frontiers Media S.A., 2013 9(2021) (DE-627)742224589 (DE-600)2711781-9 22962565 nnns volume:9 year:2021 https://doi.org/10.3389/fpubh.2021.621527 kostenfrei https://doaj.org/article/808c0af3d99f4e15aa88a9bfb5e3f332 kostenfrei https://www.frontiersin.org/articles/10.3389/fpubh.2021.621527/full kostenfrei https://doaj.org/toc/2296-2565 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_2014 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 9 2021
allfieldsGer	10.3389/fpubh.2021.621527 doi (DE-627)DOAJ016249097 (DE-599)DOAJ808c0af3d99f4e15aa88a9bfb5e3f332 DE-627 ger DE-627 rakwb eng RA1-1270 Fen Pan verfasserin aut Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children. carbapenem-resistant Klebsiella aerogenes NDM-5 ST4 plasmid IncX3 Public aspects of medicine Qi Xu verfasserin aut Hong Zhang verfasserin aut In Frontiers in Public Health Frontiers Media S.A., 2013 9(2021) (DE-627)742224589 (DE-600)2711781-9 22962565 nnns volume:9 year:2021 https://doi.org/10.3389/fpubh.2021.621527 kostenfrei https://doaj.org/article/808c0af3d99f4e15aa88a9bfb5e3f332 kostenfrei https://www.frontiersin.org/articles/10.3389/fpubh.2021.621527/full kostenfrei https://doaj.org/toc/2296-2565 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_2014 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 9 2021
allfieldsSound	10.3389/fpubh.2021.621527 doi (DE-627)DOAJ016249097 (DE-599)DOAJ808c0af3d99f4e15aa88a9bfb5e3f332 DE-627 ger DE-627 rakwb eng RA1-1270 Fen Pan verfasserin aut Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children. carbapenem-resistant Klebsiella aerogenes NDM-5 ST4 plasmid IncX3 Public aspects of medicine Qi Xu verfasserin aut Hong Zhang verfasserin aut In Frontiers in Public Health Frontiers Media S.A., 2013 9(2021) (DE-627)742224589 (DE-600)2711781-9 22962565 nnns volume:9 year:2021 https://doi.org/10.3389/fpubh.2021.621527 kostenfrei https://doaj.org/article/808c0af3d99f4e15aa88a9bfb5e3f332 kostenfrei https://www.frontiersin.org/articles/10.3389/fpubh.2021.621527/full kostenfrei https://doaj.org/toc/2296-2565 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_2014 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 9 2021
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author_browse	Fen Pan Qi Xu Hong Zhang
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title_sort	emergence of ndm-5 producing carbapenem-resistant klebsiella aerogenes in a pediatric hospital in shanghai, china
callnumber	RA1-1270
title_auth	Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China
abstract	Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children.
abstractGer	Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children.
abstract_unstemmed	Background: Carbapenem-resistant Klebsiella aerogenes (CRKA) has posed a serious threat for clinical anti-infective therapy. However, the molecular characteristics of CRKA in Shanghai are rarely reported.Objective: This study aimed to investigate the resistance profiles, dissemination mechanism, and molecular characteristics of CRKA strains isolated from children in a pediatric hospital, Shanghai.Method: Fifty CRKA isolates were collected in 2019. Antimicrobial susceptibility of the strains was determined by broth microdilution method. The β-lactamases and outer membrane porin genes were characterized by polymerase chain reaction (PCR). Conjugation experiments were performed to determine the transferability of the plasmids. The plasmids were typed based on their incompatibility group using the PCR-based replicon typing method. Multilocus sequence typing (MLST) and enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) were performed for the genetic relationship.Results: All CRKA strains showed high level of resistance to cephalosporins and carbapenems, but still susceptible to aminoglycosides, colistin, and tigecycline. Forty five of fifty isolates carried blaNDM−5 genes (45/50, 90%), alongside with other β-Lactamase genes including blaCTX−M−1, blaTEM−1, and blaSHV−11 being detected. Loss of ompK35 and ompK36 genes were observed in 14% (7/50) and 28% (14/50), respectively, with 5 isolates lacking both ompK35 and ompK36. MLST analysis demonstrated that the majority of isolates belonged to ST4 (47/50, 94%) and ERIC-PCR fingerprinting was performed to identify NDM-5-producing isolates with approximately or more than 80% similarity levels. Plasmids carrying blaNDM−5 were successfully transferred to the E. coli recipient and plasmid typing showed that IncX3 were the prevalent among CRKA isolates.Conclusions: Our finding revealed the emergence of NDM-5 producing CRKA belonging to ST4 among children in Shanghai. Further attention should be paid to control the horizontal spread of the Class B carbapenemases like NDM in children.
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title_short	Emergence of NDM-5 Producing Carbapenem-Resistant Klebsiella aerogenes in a Pediatric Hospital in Shanghai, China
url	https://doi.org/10.3389/fpubh.2021.621527 https://doaj.org/article/808c0af3d99f4e15aa88a9bfb5e3f332 https://www.frontiersin.org/articles/10.3389/fpubh.2021.621527/full https://doaj.org/toc/2296-2565
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up_date	2024-07-03T19:52:10.035Z
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