Investigation of the prevalence of virulence and antibiotic resistance genes in Escherichia coli isolated from ostriches and human urinary tract infections

Escherichia coli is an important member of the natural gut flora of humans, warm-blooded animals and birds. Often, infections caused by Escherichia coli occur opportunistically, and the main and most common infections are uropathogenic Escherichia coli (UPEC) and pathogenic Escherichia coli in birds (APEC). In the present study, 30 extra-intestinal Escherichia coli samples were collected from 30 ostriches suspected of having septicemia and 30 plates containing Escherichia coli from patients with urinary tract infections. The isolates were studied for 8 common virulence genes (astA, iss, irp2, papC, iucD, tsh, vat, cva A / B cvi cvaC, as well as 6 antibiotic resistance genes (tetA, blaTEM, sul1, aadA1, aaC. (3) -IV, OnRA) were examined. The results of this study on the prevalence and frequency of virulence factors indicated that the highest frequency in APEC strains was related to papC genes (16/66%) and iss (20%). In UPEC strains, it was related to irp2 (53.33%) and cva A/B cvi cvaC(40%) genes. Also, in the study of antibiotic resistance in APEC isolates, the highest frequency was related to aac (3) -IV gene (30%) and the highest resistance was to the aadA1 gene (8.4%). Despite the genetic differences in some virulence factors between the two groups of bacteria in the present study, our results showed that major genetic similarities Bacterial isolates from humans and ostriches, and further studies on the importance of the prevalence of these viruses and resistance genes in the epidemiology and pathogenesis of bacteria in the human and ostrich populations.