| Literature DB >> 26729504 |
Mariana Castanheira1, Lalitagauri M Deshpande2, Janet C Mills2, Ronald N Jones3, Rosemary Soave4, Stephen G Jenkins4, Audrey N Schuetz4.
Abstract
Among 69 of 139 (49.6%) carbapenem-nonsusceptible Enterobacteriaceae carrying blaKPC, 1 Klebsiella pneumoniae was also positive for blaVIM. The isolate belonged to sequence type 258 (ST258) and carried blaKPC-2 on a copy of Tn4401a and blaVIM-4 on a class 1 integron. Genes were located on distinct plasmids belonging to Inc types A/C and FII. Elevated expression of the efflux pump AcrAB-TolC (acrA, 15.3 times) and reduced expression of outer membrane protein genes ompK35 and ompK37 (0.16 and 0.081 times, respectively) associated with various amino acid alterations on OmpK37 were observed. The presence of two carbapenemases in ST258 K. pneumoniae is of great concern due to the ability of this organism to widely disseminate.Entities:
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Year: 2016 PMID: 26729504 PMCID: PMC4775970 DOI: 10.1128/AAC.01844-15
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191