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- W2138675768 abstract "ABSTRACT Clavulanic acid (CLA) exhibits low MICs against some Acinetobacter baumannii strains. The present study evaluates the efficacy of CLA in a murine model of A. baumannii pneumonia. For this purpose, two clinical strains, Ab11 and Ab51, were used; CLA MICs for these strains were 2 and 4 mg/liter, respectively, and the imipenem (IPM) MIC was 0.5 mg/liter for both. A pneumonia model in C57BL/6 mice was used. The CLA dosage (13 mg/kg of body weight given intraperitoneally) was chosen to reach a maximum concentration of the drug in serum similar to that in humans and a time during which the serum CLA concentration remained above the MIC equivalent to 40% of the interval between doses. Six groups ( n = 15) were inoculated with Ab11 or Ab51 and were allocated to IPM or CLA therapy or to the untreated control group. In time-kill experiments, CLA was bactericidal only against Ab11 whereas IPM was bactericidal against both strains. CLA and IPM both decreased bacterial concentrations in lungs, 1.78 and 2.47 log 10 CFU/g ( P ≤ 0.001), respectively, in the experiments with Ab11 and 2.42 and 2.28 log 10 CFU/g ( P ≤ 0.001), respectively, with Ab51. IPM significantly increased the sterility of blood cultures over that for the controls with both strains ( P ≤ 0.005); CLA had the same effect with Ab51 ( P < 0.005) but not with Ab11 ( P = 0.07). For the first time, we suggest that CLA may be used for the treatment of experimental severe A. baumannii infections." @default.
- W2138675768 created "2016-06-24" @default.
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- W2138675768 date "2009-10-01" @default.
- W2138675768 modified "2023-10-16" @default.
- W2138675768 title "In Vitro Activity and In Vivo Efficacy of Clavulanic Acid against Acinetobacter baumannii" @default.
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- W2138675768 doi "https://doi.org/10.1128/aac.00320-09" @default.
- W2138675768 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2764194" @default.
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