In Vitro Activity of Eravacycline in Combination with Colistin Against OXA-type Carbapenemase Producing Klebsiella pneumoniae Isolates
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Original Investigation

In Vitro Activity of Eravacycline in Combination with Colistin Against OXA-type Carbapenemase Producing Klebsiella pneumoniae Isolates

Gazi Med J 2021;32(2):276-280 DOI: 10.12996/gmj.2021.64
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Abstract

Conclusion:

Our results indicate that Eravacycline and colistin combination may be a potential therapeutic option for the treatment of CR-Kp infections.

Results:

Synergistic activity was found in 40 % of the strains by chequerboard assay. No antagonism was detected. Comparing to colistin alone at subinhibitory concentrations synergistic and bactericidal activity was observed when it combined with eravacycline. A Similar activity was also observed in colistin-resistant CR-Kp isolates.

Methods:

Minimum inhibitory concentrations of meropenem were determined by the broth microdilution method. All strains screened for carbapenemase activity by PCR. Chequerboard assay and time-kill analysis were used to assess potential synergy.

Objective:

The synergistic activity of eravacycline in combination with colistin on Oxacillinase (OXA) producing carbapenem-resistant Klebsiella pneumoniae isolates (CR-Kp) was evaluated in this study.

Keywords: Eravacycline; Colistin; Synergy; Klebsiella pneumoniae; Time-kill assay