In vitro activity of cefiderocol against ceftazidime-avibactam susceptible and resistant KPC-producing Enterobacterales: cross-resistance and synergistic effects
Journal Title: | European journal of clinical microbiology & infectious diseases 2021-08-31, Vol.41 (1), p.63-70 |
Main Author: | Bianco, Gabriele |
Other Authors: | Boattini, Matteo , Comini, Sara , Iannaccone, Marco , Bondi, Alessandro , Cavallo, Rossana , Costa, Cristina |
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English |
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Publisher: | Berlin/Heidelberg: Springer Berlin Heidelberg |
ID: | ISSN: 0934-9723 |
Link: | https://www.ncbi.nlm.nih.gov/pubmed/34462816 |
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title: | In vitro activity of cefiderocol against ceftazidime-avibactam susceptible and resistant KPC-producing Enterobacterales: cross-resistance and synergistic effects |
format: | Article |
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ispartof: | European journal of clinical microbiology & infectious diseases, 2021-08-31, Vol.41 (1), p.63-70 |
description: | Purpose To assess the in vitro activity of cefiderocol (CFDC) against a collection of both ceftazidime-avibactam (CZA) susceptible and resistant KPC-producing Enterobacterales (KPC-EB) isolates. Secondly, to assess its synergistic activity in combination with different antibiotics. Methods One hundred KPC-EB isolates were tested: 60 CZA susceptible and 40 CZA resistant. Among them, 17 pairs of CZA susceptible and resistant KPC-producing Klebsiella pneumoniae (KPC-Kp) isolates were collected from 17 distinct patients before and after CZA treatment, respectively. CFDC susceptibility was evaluated by both broth microdilution (lyophilized panels; Sensititre; Thermo Fisher) and disk diffusion testing. Results were interpreted using EUCAST breakpoints. Synergistic activity of CFDC in combination with CZA, meropenem-vaborbactam, imipenem, and amikacin against six characterized KPC-Kp strains, before and after acquisition of CZA resistance, was evaluated using gradient diffusion strip crossing method. Results CFDC resistance rate was significantly higher in CZA resistant EB subset than in the susceptible one ( p |
language: | eng |
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identifier: | ISSN: 0934-9723 |
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url: | Link |
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