Literature DB >> 29186432

Bacterial zincophore [S,S]-ethylenediamine-N,N'-disuccinic acid is an effective inhibitor of MBLs.

Anna Proschak1, Jan Kramer1, Ewgenij Proschak1, Thomas A Wichelhaus2.   

Abstract

Objectives: Carbapenemases such as MBLs are spreading among Gram-negative bacterial pathogens. Infections due to these MDR bacteria constitute a major global health challenge. Therapeutic strategies against carbapenemase-producing bacteria include β-lactamase inhibitor combinations. [S,S]-ethylenediamine-N,N'-disuccinic acid (EDDS) is a chelator and potential inhibitor of MBLs. We investigated the activity of EDDS in combination with imipenem against MBL-producing bacteria in vitro as well as in vivo.
Methods: The inhibitory activity of EDDS was analysed by means of a fluorescence-based assay using purified recombinant MBLs, i.e. NDM-1, VIM-1, SIM-1 and IMP-1. The in vitro activity of imipenem ± EDDS against mutants as well as clinical isolates expressing MBLs was evaluated by broth microdilution assay. The in vivo activity of imipenem ± EDDS was analysed in a Galleria mellonella infection model.
Results: EDDS revealed potent MBL inhibitory activity against purified NDM-1, weaker activity against VIM-1 and SIM-1, and marginal activity against IMP-1. EDDS did not exhibit any intrinsic antibacterial activity, but enabled a concentration-dependent potentiation of imipenem against mutants as well as clinical isolates expressing various MBLs. The in vivo model showed a significantly better survival rate for imipenem + EDDS-treated G. mellonella larvae infected with NDM-1-producing Klebsiella pneumoniae compared with monotherapy with imipenem. Conclusions: The bacterial natural zincophore EDDS is a potent MBL inhibitor and in combination with imipenem overcomes MBL-mediated carbapenem resistance in vitro and in vivo.
© The Author 2017. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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Year:  2018        PMID: 29186432     DOI: 10.1093/jac/dkx403

Source DB:  PubMed          Journal:  J Antimicrob Chemother        ISSN: 0305-7453            Impact factor:   5.790


  6 in total

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Review 4.  Recent Applications of Carbon-Nitrogen Lyases in Asymmetric Synthesis of Noncanonical Amino Acids and Heterocyclic Compounds.

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5.  RhII -Catalyzed De-symmetrization of Ethane-1,2-dithiol and Propane-1,3-dithiol Yields Metallo-β-lactamase Inhibitors.

Authors:  Mikhail Krasavin; Daniil Zhukovsky; Igor Solovyev; Darina Barkhatova; Dmitry Dar'in; Denia Frank; Giada Martinelli; Lilia Weizel; Anna Proschak; Marco Rotter; Jan S Kramer; Steffen Brunst; Thomas A Wichelhaus; Ewgenij Proschak
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6.  Small Molecule Carboxylates Inhibit Metallo-β-lactamases and Resensitize Carbapenem-Resistant Bacteria to Meropenem.

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  6 in total

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