Persistence and epidemic propagation of a Pseudomonas aeruginosa sequence type 235 clone harboring an IS26 composite transposon carrying the blaIMP-1 integron in Hiroshima, Japan, 2005 to 2012.

ABSTRACT: A 9-year surveillance for multidrug-resistant (MDR) Pseudomonas aeruginosa in the Hiroshima region showed that the number of isolates harboring the metallo-β-lactamase gene bla(IMP-1) abruptly increased after 2004, recorded the highest peak in 2006, and showed a tendency to decline afterwards, indicating a history of an epidemic. PCR mapping of the variable regions of the integrons showed that this epidemic was caused by the clonal persistence and propagation of an MDR P. aeruginosa strain harboring the bla(IMP-1) gene and an aminoglycoside 6'-N-acetyltransferase gene, aac(6')-Iae in a class I integron (In113), whose integrase gene intl1 was disrupted by an IS26 insertion. Sequence analysis of the representative strain PA058447 resistance element containing the In113-derived gene cassette

SUBMITTER: Shimizu W 

PROVIDER: S-EPMC4394780 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature