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Polymyxin resistance caused by mgrB inactivation is not associated with significant biological cost in Klebsiella pneumoniae

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Antimicrob. Agents Chemother.-2015-Cannatelli-2898-900.pdf (155.79 KB)
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http://aac.asm.org/content/59/5/2898.full
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2015-05
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American Society for Microbiology
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The inactivation of the mgrB gene, which encodes a negative-feedback regulator of the PhoPQ signaling system, was recently shown to be a common mutational mechanism responsible for acquired polymyxin resistance among carbapenemase-producing Klebsiella pneumoniae strains from clinical sources. In this work, we show that mgrB mutants can easily be selected in vitro from different K. pneumoniae lineages, and mgrB inactivation is not associated with a significant biological cost.
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Veterinaria
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3109 Ciencias Veterinarias
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https://hdl.handle.net/20.500.14352/24678
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