Antibiotic resistance pattern and prevalence of class 1, 2 and 3 integron genes in Escherichia coli strains isolated from urinary tract infections in Shahrekord
Subject Areas : microbiologyMarziyeh Soleymanian 1 , نازیلا ارباب سلیمانی 2 , sanaz khaksar haghani 3
1 -
2 - دانشگاه آزاد دامغان
3 - 2. MSc, Department of Microbiology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord Branch, Iran.
Keywords: Escherichia coli, integron, antibiotic resistance, urinary infection,
Abstract :
Integrons are mobile genetic elements capable of carrying resistance genes to various antibiotics. These elements have been found in different places of plasmid and chromosome. The aim of this present study was determine the prevalence of class 1, 2 and 3 integrons in Escherichia coli isolates isolated from urinary tract infection in Shahrekord. In this research, the number of 64 isolates of Escherichia coli were investigated. The antibiotic resistance of the investigated isolates was evaluated using a simple disking method in Mueller Hinton agar medium. In order to determine the frequency of class 1, 2 and 3 integrons, specific primer pairs were used. After the antibiogram test, the highest resistance to ampicillin (75%) and the lowest resistance to imipenem (12.5%) were observed. The frequency of class 1, 2 and 3 integron genes was observed as 12.5%, 6.25% and 3.12%, respectively. None of the integron genes were observed in 52 isolates. In the statistical analysis with chi-square test, a statistically significant relationship was observed between class 1 integron and resistance to the antibiotic ampicillin (p = 0.02 < 0.05). Due to the fact that resistance genes are located on integrons and can be transferred from one strain to another strain and spread resistance in the hospital or other environments, this has doubled the importance of identifying this type of antibiotic resistance genes. Key words: Escherichia coli, integron, antibiotic resistance, urinary infection
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