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Original Article
Prevalence of plasmid-mediated AmpC β-lactamases among uropathogenic Escherichia coli isolates in southwestern Iran
Nabi Jomehzadeh, Khadijeh Ahmadi, Zahra Rahmani
Osong Public Health Res Perspect. 2021;12(6):390-395.   Published online December 1, 2021
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Objectives: This study was undertaken to evaluate AmpC β-lactamase-producing Escherichia coli urine isolates and to characterize the frequency of plasmid-mediated AmpC (pAmpC)-encoding genes. Methods: Antimicrobial susceptibility tests were performed using the disk diffusion technique. AmpC β-lactamase production was assessed with a phenotypic inhibitor-based method. The presence of 6 pAmpC-encoding cluster genes was detected by multiplex polymerase chain reaction (PCR). Results: The proportion...
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
Osong Public Health Res Perspect. 2015;6(3):201-204.   Published online June 30, 2015
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 aim of this study is to determine the molecular 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...
Characterization of Plasmid-Mediated AmpC and Carbapenemases among Iranain Nosocomial Isolates of Klebsiella pneumoniae Using Phenotyping and Genotyping Methods
Alireza Japoni-Nejad, Ehsanollah Ghaznavi-Rad, Alex van Belkum
Osong Public Health Res Perspect. 2014;5(6):333-338.   Published online December 31, 2014
Objectives Plasmid-mediated AmpC β-lactamases (PMABLs) and carbapenemases are emerging groups of antimicrobial-resistance determinants. The aims of the study were to evaluate the occurrence of PMABLs and carbapenemases in clinical isolates of Klebsiella pneumoniae and compare the test performance of various phenotypic methods for detection of these enzymes in Iran. Methods A total of 100 K. pneumoniae isolates were collected from clinical specimens obtained...

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Print ISSN: 2210-9099
Online ISSN: 2233-6052

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