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Prevalence of multi-drug resistant uropathogenic Escherichia coli in Potohar region of Pakistan

Asian Pacific Journal of Tropical Biomedicine 2016年第1期6卷 60-66页

作者： Ihsan Ali Zara Rafaque Safia Ahmed Sajid Malik Javid Iqbal Dasti Department of Microbiology Qauid-i-Azam University Department of Animal Sciences Qauid-i-Azam University

Objective:To scrutinize patterns of multi-drug-resistant uropathogenic Escherichia coli(UPEC) strains and particularly of fluoroquinolone-resistance this is an alternative choice for the treatment of urinary tract ***:Bacterial samples(n = 250) were collected from out-patients from August 2012 to August 2014 *** susceptibility profiling and determination of minimum inhibitory concentrations(MICs) and minimum bactericidal concentrations were performed according to the guidelines of Clinical and Laboratory Standards Institute(CLSI,2012).Genes,qnrA,qnrB and qnrS were identified by DNA amplification and ***:The highest percentage of UPEC isolates were resistant to co-trimoxazole(82%) followed by cephalothin(80%),2nd Gen,3rd Gen and 4th Gen cephalosporins,*** against gentamicin,amikacin remained 29% and 4%.For other drugs including nitrofurantoin,tetracycline,carbapenem and beta-lactam inhibitors remained below 10%.Altogether,59% of the isolates were resistant to at least three antibiotics including one ***,MICs for ciprofloxacin remained(MIC≥256 μg/mL) and for levofloxacin(MIC≥16 μg/mL and 32 μg/mL).No significant differences were observed regarding MIC values of extended spectrumβ-lactamase(ESBL) and non-ESBL *** qnrS and qnrB positive isolates MICs remained above 32 μg/*** of UPEC was significantly higher among females and 40% of the isolates were ESBL ***:Higher percentages of ESBL producing UPEC were associated with urinary tract ***,the majority of these isolates were multi-drug resistant and fluoroquinolone-resistant.

关键词： fluoroquinolone-resistant Uropathogenic E.coli Multi-drug resistant Extended spectrum beta-lactamase

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