Abstract
Thebla PER-1 presence was sought by PCR in 289 ceftazidime resistant Gram-negative bacteria isolated atDokuz Eylul University Hospital (Turkey) between 1998 and 2003. PER-1 production rates were 32.3, 33.9, 14.9 and 37.9% in the 1998–2000 period, 2001, 2002 and 2003, respectively.bla PER-1 was detected in 46.2 and 35.9% of ceftazidime-resistantPseudomonas aeruginosa andAcinetobacter baumannii isolates, respectively. ERIC-PCR results revealed that dissemination of two endemic clones for bothP. aeruginosa (X and Y) andA. baumannii (A and B) was responsible for the high prevalence. Results of the conjugation tests and plasmid curing experiments suggested thatbla PER-1 was located on the chromosome in the representative strains. It was also shown for the first time thatbla PER-1 in a clinical isolate was associated with class-1 integron which could facilitate dissemination ofbla PER-1 among bacteria.
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Abbreviations
- bla :
-
β-lactamase gene(s)
- ERIC:
-
enterobacterial repetitive intergenic consensus
- ESBL:
-
extended spectrum β-lactamase
- EtmBr:
-
ethidium bromide
- GES:
-
Guiana (Brazil) extended-spectrum (β-lactamase); also called IBC (integron-associated β-lactamase)
- ICU:
-
intensive care unit
- MIC:
-
minimum inhibitory concentration
- NCCLS:
-
National Committee for Clinical Laboratory Standards (nowClinical and Laboratory Standards Institute, CLSI)
- PCR:
-
polymerase chain reaction
- PER-1:
-
secondary β-lactamase (ESBL first detected inP. aeruginosa)
- SHV:
-
sulfanyl (‘sulfhydryl’) variable (β-lactamase)
- TEM:
-
β-lactamase (originally found in the blood of a patient in Temoniera, Greece)
- UPGMA:
-
unpaired group mathematical analysis
- VEB:
-
Vietnamese extended-spectrum β-lactamase
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This research was supported byDokuz Eylul University grant no. 03.K.B.SAG.009.
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Eraç, B., Gülay, Z. Molecular epidemiology of PER-1 extended spectrum β-lactamase among gram-negative bacteria isolated at a tertiary care hospital. Folia Microbiol 52, 535–541 (2007). https://doi.org/10.1007/BF02932116
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DOI: https://doi.org/10.1007/BF02932116