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High Prevalence of AmpC β-Lactamases in Clinical Isolates of Escherichia coli in Ilam, Iran
Abbas Maleki,Afra Khosravi,Sobhan Ghafourian,Iraj Pakzad,Shiva Hosseini,Rashid Ramazanzadeh,Nourkhoda Sadeghifard 질병관리본부 2015 Osong Public Health and Research Persptectives Vol.6 No.3
Objectives: Widespread use of β-lactam antibiotics could cause resistance to this group of antibiotics in pathogenic bacteria through the production of the enzyme β-lactamases. The aimof this study is to determine themolecular detection of AmpC β-lactamases among clinical Escherichia coli isolated from Ilam hospitals in Ilam, Iran. Methods: One hundred and twelve clinical isolates of E. coli were collected from hospitalized patients and were identified by biochemical tests. They were evaluated for extended spectrum beta-lactamases (ESBLs) production, and the positive strains were subjected to AmpC enzymes; for detection of AmpC cluster genes, multiplex polymerase chain reaction was applied. Results: The analysis showed 62.5% of isolates were ESBLs positive and that five strains revealed the AmpC cluster genes. This is the first report of FOXM cluster genes in E. coli in Iran. Conclusion: Based on our results, the prevalence of AmpC β-lactamases is increasing in Iran, which caused failure in antibiotic therapy. So, the current study recommended the revision of antibiotic policy in Iranian hospitals.