High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals
Objectives: Carbapenem-resistant Enterobacterales are a global problem, however little is known about the burden and origin of carbapenem resistance in Africa. The objectives of this study were to determine the proportion of carbapenem-resistant isolates among extended-spectrum β-lactamase-producing...
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doaj-22f84a6e2caf487981e1fb8049758dda2021-05-20T07:48:43ZengElsevierJournal of Global Antimicrobial Resistance2213-71652020-06-0121812High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitalsAdesola Olalekan0Francis Onwugamba1Bamidele Iwalokun2Alexander Mellmann3Karsten Becker4Frieder Schaumburg5Department of Medical Laboratory Science, College of Medicine, University of Lagos, Lagos, NigeriaInstitute of Medical Microbiology, University Hospital Münster, Domagkstraße 10, 48149 Münster, GermanyMolecular Biology and Biotechnology Department, Nigerian Institute of Medical Research, Lagos, NigeriaInstitute of Medical Microbiology, University Hospital Münster, Domagkstraße 10, 48149 Münster, Germany; Institute of Hygiene, University Hospital Münster, Münster, GermanyInstitute of Medical Microbiology, University Hospital Münster, Domagkstraße 10, 48149 Münster, GermanyInstitute of Medical Microbiology, University Hospital Münster, Domagkstraße 10, 48149 Münster, Germany; Corresponding author.Objectives: Carbapenem-resistant Enterobacterales are a global problem, however little is known about the burden and origin of carbapenem resistance in Africa. The objectives of this study were to determine the proportion of carbapenem-resistant isolates among extended-spectrum β-lactamase-producing Enterobacterales (ESBL-E), to identify the underlying mechanisms of resistance and to assess the population structure of carbapenem-resistant isolates from Nigeria. Methods: ESBL-E isolates (n = 175) from infections were collected at four hospitals in Lagos, Nigeria, from July 2016 to January 2018 and were screened for carbapenem resistance using a VITEK®2 automated system. All carbapenem-resistant ESBL-E (CRE) were screened for blaKPC, blaCTX-M, blaCMY-2, blaNDM, blaVIM, blaIMP, blaOXA-181 and blaOXA-48 genes. Genotyping of randomly selected isolates was performed by whole-genome sequencing. Results: The isolates included Escherichia coli (n = 113; 64.6%) and Klebsiella pneumoniae (n = 62; 35.4%). Of the 175 ESBL-E isolates, 48 (27.4%) were resistant to carbapenems (15 E. coli and 33 K. pneumoniae). CRE isolates carried blaNDM (n = 30; 62.5%), blaNDM + blaOXA-181 (n = 10; 20.8%), blaOXA-181 (n = 2; 4.2%) and blaNDM + blaOXA-48 (n = 1; 2.1%); no carbapenemase gene was detected in 5 isolates (10.4%). The isolates showed low diversity and were mainly associated with multilocus sequence typing (MLST) sequence types ST410 for E. coli and ST395 and ST147 for K. pneumoniae. Conclusion: Carbapenem resistance is frequent among ESBL-E in Nigeria and is mainly associated with blaNDM. Genotyping suggested that the observed clones possibly originated from Southeast Asia.http://www.sciencedirect.com/science/article/pii/S2213716519302401NigeriaCarbapenem-resistant EnterobacteralesblaNDMblaOXA-181Extended-spectrum β-lactamaseCeftazidime/avibactam |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Adesola Olalekan Francis Onwugamba Bamidele Iwalokun Alexander Mellmann Karsten Becker Frieder Schaumburg |
spellingShingle |
Adesola Olalekan Francis Onwugamba Bamidele Iwalokun Alexander Mellmann Karsten Becker Frieder Schaumburg High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals Journal of Global Antimicrobial Resistance Nigeria Carbapenem-resistant Enterobacterales blaNDM blaOXA-181 Extended-spectrum β-lactamase Ceftazidime/avibactam |
author_facet |
Adesola Olalekan Francis Onwugamba Bamidele Iwalokun Alexander Mellmann Karsten Becker Frieder Schaumburg |
author_sort |
Adesola Olalekan |
title |
High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals |
title_short |
High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals |
title_full |
High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals |
title_fullStr |
High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals |
title_full_unstemmed |
High proportion of carbapenemase-producing Escherichia coli and Klebsiella pneumoniae among extended-spectrum β-lactamase-producers in Nigerian hospitals |
title_sort |
high proportion of carbapenemase-producing escherichia coli and klebsiella pneumoniae among extended-spectrum β-lactamase-producers in nigerian hospitals |
publisher |
Elsevier |
series |
Journal of Global Antimicrobial Resistance |
issn |
2213-7165 |
publishDate |
2020-06-01 |
description |
Objectives: Carbapenem-resistant Enterobacterales are a global problem, however little is known about the burden and origin of carbapenem resistance in Africa. The objectives of this study were to determine the proportion of carbapenem-resistant isolates among extended-spectrum β-lactamase-producing Enterobacterales (ESBL-E), to identify the underlying mechanisms of resistance and to assess the population structure of carbapenem-resistant isolates from Nigeria. Methods: ESBL-E isolates (n = 175) from infections were collected at four hospitals in Lagos, Nigeria, from July 2016 to January 2018 and were screened for carbapenem resistance using a VITEK®2 automated system. All carbapenem-resistant ESBL-E (CRE) were screened for blaKPC, blaCTX-M, blaCMY-2, blaNDM, blaVIM, blaIMP, blaOXA-181 and blaOXA-48 genes. Genotyping of randomly selected isolates was performed by whole-genome sequencing. Results: The isolates included Escherichia coli (n = 113; 64.6%) and Klebsiella pneumoniae (n = 62; 35.4%). Of the 175 ESBL-E isolates, 48 (27.4%) were resistant to carbapenems (15 E. coli and 33 K. pneumoniae). CRE isolates carried blaNDM (n = 30; 62.5%), blaNDM + blaOXA-181 (n = 10; 20.8%), blaOXA-181 (n = 2; 4.2%) and blaNDM + blaOXA-48 (n = 1; 2.1%); no carbapenemase gene was detected in 5 isolates (10.4%). The isolates showed low diversity and were mainly associated with multilocus sequence typing (MLST) sequence types ST410 for E. coli and ST395 and ST147 for K. pneumoniae. Conclusion: Carbapenem resistance is frequent among ESBL-E in Nigeria and is mainly associated with blaNDM. Genotyping suggested that the observed clones possibly originated from Southeast Asia. |
topic |
Nigeria Carbapenem-resistant Enterobacterales blaNDM blaOXA-181 Extended-spectrum β-lactamase Ceftazidime/avibactam |
url |
http://www.sciencedirect.com/science/article/pii/S2213716519302401 |
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