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Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains

Carbapenemase-producing Klebsiella pneumoniae infections are an increasing global threat with scarce and uncertain treatment options. In this context, combination therapies are often used for these infections. The bactericidal and synergistic activity of fosfomycin plus amikacin and gentamicin was s...

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Autores principales: Cebrero-Cangueiro, Tania, Labrador-Herrera, Gema, Pascual, Álvaro, Díaz, Caridad, Rodríguez-Baño, Jesús, Pachón, Jerónimo, del Palacio, José P., Pachón-Ibáñez, María E., Conejo, M. Carmen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8033020/
https://www.ncbi.nlm.nih.gov/pubmed/33842497
http://dx.doi.org/10.3389/fmed.2021.615540
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author Cebrero-Cangueiro, Tania
Labrador-Herrera, Gema
Pascual, Álvaro
Díaz, Caridad
Rodríguez-Baño, Jesús
Pachón, Jerónimo
del Palacio, José P.
Pachón-Ibáñez, María E.
Conejo, M. Carmen
author_facet Cebrero-Cangueiro, Tania
Labrador-Herrera, Gema
Pascual, Álvaro
Díaz, Caridad
Rodríguez-Baño, Jesús
Pachón, Jerónimo
del Palacio, José P.
Pachón-Ibáñez, María E.
Conejo, M. Carmen
author_sort Cebrero-Cangueiro, Tania
collection PubMed
description Carbapenemase-producing Klebsiella pneumoniae infections are an increasing global threat with scarce and uncertain treatment options. In this context, combination therapies are often used for these infections. The bactericidal and synergistic activity of fosfomycin plus amikacin and gentamicin was studied trough time–kill assays against four clonally unrelated clinical isolates of carbapenemase-producing K. pneumoniae, VIM-1, VIM-1 plus DHA-1, OXA-48 plus CTXM-15, and KPC-3, respectively. The efficacy of antimicrobials that showed synergistic activity in vitro against all the carbapenemase-producing K. pneumoniae were tested in monotherapy and in combination, in a murine peritoneal sepsis model. In vitro, fosfomycin plus amikacin showed synergistic and bactericidal effect against strains producing VIM-1, VIM-1 plus DHA-1, and OXA-48 plus CTX-M-15. Fosfomycin plus gentamicin had in vitro synergistic activity against the strain producing KPC-3. In vivo, fosfomycin and amikacin and its combination reduced the spleen bacterial concentration compared with controls groups in animals infected by K. pneumoniae producing VIM-1 and OXA-48 plus CTX-M-15. Moreover, amikacin alone and its combination with fosfomycin reduced the bacteremia rate against the VIM-1 producer strain. Contrary to the in vitro results, no in vivo efficacy was found with fosfomycin plus amikacin against the VIM-1 plus DHA-1 producer strain. Finally, fosfomycin plus gentamicin reduced the bacterial concentration in spleen against the KPC-3 producer strain. In conclusion, our results suggest that fosfomycin plus aminoglycosides has a dissimilar efficacy in the treatment of this severe experimental infection, when caused by different carbapenemase-producing K. pneumoniae strains. Fosfomycin plus amikacin or plus gentamycin may be useful to treat infections by OXA-48 plus CTX-M-15 or KPC-3 producer strains, respectively.
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spelling pubmed-80330202021-04-10 Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains Cebrero-Cangueiro, Tania Labrador-Herrera, Gema Pascual, Álvaro Díaz, Caridad Rodríguez-Baño, Jesús Pachón, Jerónimo del Palacio, José P. Pachón-Ibáñez, María E. Conejo, M. Carmen Front Med (Lausanne) Medicine Carbapenemase-producing Klebsiella pneumoniae infections are an increasing global threat with scarce and uncertain treatment options. In this context, combination therapies are often used for these infections. The bactericidal and synergistic activity of fosfomycin plus amikacin and gentamicin was studied trough time–kill assays against four clonally unrelated clinical isolates of carbapenemase-producing K. pneumoniae, VIM-1, VIM-1 plus DHA-1, OXA-48 plus CTXM-15, and KPC-3, respectively. The efficacy of antimicrobials that showed synergistic activity in vitro against all the carbapenemase-producing K. pneumoniae were tested in monotherapy and in combination, in a murine peritoneal sepsis model. In vitro, fosfomycin plus amikacin showed synergistic and bactericidal effect against strains producing VIM-1, VIM-1 plus DHA-1, and OXA-48 plus CTX-M-15. Fosfomycin plus gentamicin had in vitro synergistic activity against the strain producing KPC-3. In vivo, fosfomycin and amikacin and its combination reduced the spleen bacterial concentration compared with controls groups in animals infected by K. pneumoniae producing VIM-1 and OXA-48 plus CTX-M-15. Moreover, amikacin alone and its combination with fosfomycin reduced the bacteremia rate against the VIM-1 producer strain. Contrary to the in vitro results, no in vivo efficacy was found with fosfomycin plus amikacin against the VIM-1 plus DHA-1 producer strain. Finally, fosfomycin plus gentamicin reduced the bacterial concentration in spleen against the KPC-3 producer strain. In conclusion, our results suggest that fosfomycin plus aminoglycosides has a dissimilar efficacy in the treatment of this severe experimental infection, when caused by different carbapenemase-producing K. pneumoniae strains. Fosfomycin plus amikacin or plus gentamycin may be useful to treat infections by OXA-48 plus CTX-M-15 or KPC-3 producer strains, respectively. Frontiers Media S.A. 2021-03-26 /pmc/articles/PMC8033020/ /pubmed/33842497 http://dx.doi.org/10.3389/fmed.2021.615540 Text en Copyright © 2021 Cebrero-Cangueiro, Labrador-Herrera, Pascual, Díaz, Rodríguez-Baño, Pachón, del Palacio, Pachón-Ibáñez and Conejo. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Medicine
Cebrero-Cangueiro, Tania
Labrador-Herrera, Gema
Pascual, Álvaro
Díaz, Caridad
Rodríguez-Baño, Jesús
Pachón, Jerónimo
del Palacio, José P.
Pachón-Ibáñez, María E.
Conejo, M. Carmen
Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains
title Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains
title_full Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains
title_fullStr Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains
title_full_unstemmed Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains
title_short Efficacy of Fosfomycin and Its Combination With Aminoglycosides in an Experimental Sepsis Model by Carbapenemase-Producing Klebsiella pneumoniae Clinical Strains
title_sort efficacy of fosfomycin and its combination with aminoglycosides in an experimental sepsis model by carbapenemase-producing klebsiella pneumoniae clinical strains
topic Medicine
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8033020/
https://www.ncbi.nlm.nih.gov/pubmed/33842497
http://dx.doi.org/10.3389/fmed.2021.615540
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