Prevalence of PER-1- type Extended-Spectrum Beta-Lactamaes in Clinical Strains of Pseudomonas aeruginosa Isolated from Tabriz, Iran
Author(s):
Abstract:
Objective(s)The aim of this study was to investigate the presence of PER-1-type ESBLs in drug resistant Pseudomonas aeruginosa isolates. Materials and MethodsDuring one-year period (2008-2009), following isolation and identification of 56 P. aeruginosa, the E-test method was performed for determination of minimal inhibitory concentration of ceftazidim. The isolates that they had MIC≥16 µg/ml against ceftazidim were used for determination of ESBL-producing by combined disk test (CDT) and double disk synergy test (DDST) methods. Bla PER-1 gene was investigated by PCR. P. aeruginosa KOAS was used as positive control. ResultsTwenty-nine (51.78%) out of fifty six isolates had MIC≥16 µg/ml to ceftazidime, twenty two (75.86%) of them were ESBL producers. Some isolates (27.5%) contained bla PER-1 gene. ConclusionPER-1-type ESBLs producing P.aeruginosa has not been reported previously in Tabriz but there has been a rather high prevalence of it.
Language:
English
Published:
Iranian Journal of Basic Medical Sciences, Volume:15 Issue: 1, Jan-Feb 2012
Page:
678
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