Microbial Growth Inhibition by Alternating Electric Fields in Mice withPseudomonas aeruginosaLung Infection

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Abstract
High-frequency, low-intensity electric fields generated by insulated electrodes have previously been shown to inhibit bacterial growthin vitro. In the present study, we tested the effect of these antimicrobial fields (AMFields) on the development of lung infection caused byPseudomonas aeruginosain mice. We demonstrate that AMFields (10 MHz) significantly inhibit bacterial growthin vivo, both as a stand-alone treatment and in combination with ceftazidime. In addition, we show that peripheral (skin) heating of about 2°C can contribute to bacterial growth inhibition in the lungs of mice. We suggest that the combination of alternating electric fields, together with the heat produced during their application, may serve as a novel antibacterial treatment modality.

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