Prevalence of Integrons and Antibiotic Resistance among Escherichia coli isolated from patient suspected with urinary tract infection from Al-Najaf hospitals
Background: The emergence of antibiotic resistance among pathogenic bacteria has become a serious problem worldwide. Integrons are useful marker of antibiotic resistance dissemination among Enterobacteriaceae. The purpose of current study was to compare the existence of the intI1andintI2 gene and its associations with the resistant to antibiotic of Escherichia coli isolated from patients with suspected with UTIs. Methods: For the period of the study about of 1300 urine specimens were collected from patients suspected with UTIs, Kirby-Bauer disk diffusion method 28 antimicrobial agents used to determine the antibiotic susceptibility of E coli isolates. The isolates had be subjected to polymerase chain reactions (PCR) for detection of class 1 and 2 integron and antibiotic resistance genes. Results: From 1300 urine specimens E. coli isolates had represented in 111(41.3%). The antimicrobial sensitivity profile of 111 E. coli isolates were studied 104(93.3%) were multidrug resistant (MDR) and five (4.4%) isolates were susceptible to all antibiotics. The PCR data of integrons genes revealed that 89 (85.6%) of MDR E. coli isolates had integrons genes, intI1 was detected in 82.7% of isolates, while intI2 was found only in 6.7% of them. Detect the bouth of intI1 and intI2 had detected in 3.8% of the isolates. The qacE∆1 gene were found in 65.1%, sul1 gene were detected in 8.1% ,and variable region in a different size products were detected in 89.5% of class I integron, at the same time as for variable regions of class II integron were detected in 57.1%. Conclusions: The study is show that the high frequency of class I integron in Uropathogenic Escherichia coli (UPEC) isolates conferring resistance to some classes of antibiotic. Keywords: Uropathogenic Escherichia coli, classI and classII intgrons, antibiotic resistance Correspondence: *Hashim Ali Abdualmeer Al-sherees Department of Microbiology / Faculty of Medicine / University of Kufa