| Literature DB >> 28874377 |
Aurélie Jayol1,2,3,4,5, Patrice Nordmann1,2,3,6, Adrian Brink7, Maria-Virginia Villegas8, Véronique Dubois4,5, Laurent Poirel9,2,3.
Abstract
Mutations in crrAB genes encoding a two-component regulator involved in modifications of lipopolysaccharide were searched for among a collection of colistin-resistant Klebsiella pneumoniae isolates. Four isolates, respectively, producing carbapenemases NDM-1, OXA-181, or KPC-2 showed mutated CrrB proteins compared with those in wild-type strains. Complementation assays with a wild-type CrrB protein restored the susceptibility to colistin in all cases, confirming the involvement of the identified substitutions in the resistance phenotype.Entities:
Keywords: CrrAB; Klebsiella pneumoniae; polymyxin; rapid polymyxin NP test; resistance mechanisms; susceptibility testing
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Year: 2017 PMID: 28874377 PMCID: PMC5655078 DOI: 10.1128/AAC.01423-17
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191