Antibiotic Resistance and Virulence Genes of Escherichia coli Isolated from Patients with Urinary Tract Infections After Kidney Transplantation from Deceased Donors
Abstract
Objective This study aimed to determine the prevalence of antibiotic resistance and virulence genes of Escherichia coli strains among patients with urinary tract infections (UTIs) after kidney transplantation from deceased donors. Methods Between January 2014 and June 2018, 64 patients who received kidney transplants from deceased donors at our institution developed a UTI due to E. coli. Polymerase chain reaction was used to detect virulence genes in E. coli strains. The Kirby–Bauer method was used to evaluate the antibiotic susceptibility pattern of the isolates. Results Among the study cohort, 46 (71.9%) UTIs were community-acquired (CA), and 18 (28.1%) were hospital-acquired (HA). The percentages of isolated E. coli strains that showed antibiotic resistance were as follows: 92.2% to ampicillin, 76.6% to cefalotin, 81.3% to carbenicillin, 29.7% to ciprofloxacin, 62.5% to cotrimoxazole, 35.9% to gentamicin, 34.4% to levofloxacin, 28.1% to norfloxacin, 68.8% to pefloxacin, 57.8% to trimethoprim/sulfamethoxazole, and 20.3% to amikacin. HA E. coli showed higher resistance to ciprofloxacin, cotrimoxazole, trimethoprim/sulfamethoxazole and amikacin, compared with CA E. coli (P<0.05). The most prevalent virulence genes among the E. coli strains were fim (64.1%), followed by irp2 (56.3%), iroN (46.9%), pap GII (45.3%), sfa (31.3%), pap (25%), iuc (23.4%), pap GI (15.6%), pap GIII (14.1%), hly (9.4%), and cnf (4.7%). The irp2 and iroN genes were found more frequently in the HA E.…
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