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Impact of meropenem on Klebsiella pneumoniae metabolism

The aim of this study was to analyze the metabolome of several Klebsiella pneumoniae strains characterized by different resistance patterns. A total of 59 bacterial strains (27 carbapenemase-negative and 32 carbapenemase-positive) were included and their metabolic features were assessed in basal con...

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Autores principales: Foschi, Claudio, Salvo, Melissa, Laghi, Luca, Zhu, Chenglin, Ambretti, Simone, Marangoni, Antonella, Re, Maria Carla
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6237392/
https://www.ncbi.nlm.nih.gov/pubmed/30440048
http://dx.doi.org/10.1371/journal.pone.0207478
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author Foschi, Claudio
Salvo, Melissa
Laghi, Luca
Zhu, Chenglin
Ambretti, Simone
Marangoni, Antonella
Re, Maria Carla
author_facet Foschi, Claudio
Salvo, Melissa
Laghi, Luca
Zhu, Chenglin
Ambretti, Simone
Marangoni, Antonella
Re, Maria Carla
author_sort Foschi, Claudio
collection PubMed
description The aim of this study was to analyze the metabolome of several Klebsiella pneumoniae strains characterized by different resistance patterns. A total of 59 bacterial strains (27 carbapenemase-negative and 32 carbapenemase-positive) were included and their metabolic features were assessed in basal conditions. Moreover, 8 isolates (4 wild-type and 4 KPC-producers) were randomly selected to evaluate the impact of sub-lethal concentrations of meropenem on bacterial metabolism. The metabolomic analysis was performed by (1)H-NMR spectroscopy both on filtered supernatants and cell lysates. A total of 40 and 20 molecules were quantified in the intracellular and the extracellular metabolome, respectively. While in basal conditions only five metabolites showed significant differences between carbapenemase-positive and negative strains, the use of meropenem had a profound impact on the whole bacterial metabolism. In the intracellular compartment, a reduction of different overflow metabolites and organic acids (e.g. formate, acetate, isobutyrate) was noticed, whereas, in the extracellular metabolome, the levels of several organic acids (e.g. succinate, acetate, formate, lactate) and amino acids (aspartate, threonine, lysine, alanine) were modified by meropenem stimulation. Interestingly, carbapenemase-positive and negative strains reacted differently to meropenem in terms of number and type of perturbed metabolites. In wild-type strains, meropenem had great impact on the metabolic pathways related to methane metabolism and alanine, aspartate and glutamate metabolism, whereas in KPC-producers the effect was predominant on pyruvate metabolism. The knowledge about the bacterial metabolic profiles could help to set up innovative diagnostic methods and new antimicrobial strategies to fight the global crisis against carbapenemase-positive K. pneumoniae.
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spelling pubmed-62373922018-12-01 Impact of meropenem on Klebsiella pneumoniae metabolism Foschi, Claudio Salvo, Melissa Laghi, Luca Zhu, Chenglin Ambretti, Simone Marangoni, Antonella Re, Maria Carla PLoS One Research Article The aim of this study was to analyze the metabolome of several Klebsiella pneumoniae strains characterized by different resistance patterns. A total of 59 bacterial strains (27 carbapenemase-negative and 32 carbapenemase-positive) were included and their metabolic features were assessed in basal conditions. Moreover, 8 isolates (4 wild-type and 4 KPC-producers) were randomly selected to evaluate the impact of sub-lethal concentrations of meropenem on bacterial metabolism. The metabolomic analysis was performed by (1)H-NMR spectroscopy both on filtered supernatants and cell lysates. A total of 40 and 20 molecules were quantified in the intracellular and the extracellular metabolome, respectively. While in basal conditions only five metabolites showed significant differences between carbapenemase-positive and negative strains, the use of meropenem had a profound impact on the whole bacterial metabolism. In the intracellular compartment, a reduction of different overflow metabolites and organic acids (e.g. formate, acetate, isobutyrate) was noticed, whereas, in the extracellular metabolome, the levels of several organic acids (e.g. succinate, acetate, formate, lactate) and amino acids (aspartate, threonine, lysine, alanine) were modified by meropenem stimulation. Interestingly, carbapenemase-positive and negative strains reacted differently to meropenem in terms of number and type of perturbed metabolites. In wild-type strains, meropenem had great impact on the metabolic pathways related to methane metabolism and alanine, aspartate and glutamate metabolism, whereas in KPC-producers the effect was predominant on pyruvate metabolism. The knowledge about the bacterial metabolic profiles could help to set up innovative diagnostic methods and new antimicrobial strategies to fight the global crisis against carbapenemase-positive K. pneumoniae. Public Library of Science 2018-11-15 /pmc/articles/PMC6237392/ /pubmed/30440048 http://dx.doi.org/10.1371/journal.pone.0207478 Text en © 2018 Foschi et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Foschi, Claudio
Salvo, Melissa
Laghi, Luca
Zhu, Chenglin
Ambretti, Simone
Marangoni, Antonella
Re, Maria Carla
Impact of meropenem on Klebsiella pneumoniae metabolism
title Impact of meropenem on Klebsiella pneumoniae metabolism
title_full Impact of meropenem on Klebsiella pneumoniae metabolism
title_fullStr Impact of meropenem on Klebsiella pneumoniae metabolism
title_full_unstemmed Impact of meropenem on Klebsiella pneumoniae metabolism
title_short Impact of meropenem on Klebsiella pneumoniae metabolism
title_sort impact of meropenem on klebsiella pneumoniae metabolism
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6237392/
https://www.ncbi.nlm.nih.gov/pubmed/30440048
http://dx.doi.org/10.1371/journal.pone.0207478
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