Volume 25, Issue 5 (December & January 2022)                   J Arak Uni Med Sci 2022, 25(5): 3-9 | Back to browse issues page

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Moradpoor Shamami A, Anvari M, Shafighi S T, Sedigh Ebrahim-Saraie H. Investigation of antibiotic susceptibility pattern and frequency of serogroups O25 and O16 and among uropathogenic Escherichia coli isolates in Rasht city. J Arak Uni Med Sci 2022; 25 (5) :3-9
URL: http://jams.arakmu.ac.ir/article-1-7249-en.html
1- Department of Biology, Faculty of Science, Rasht Branch, Islamic Azad University, Rasht, Iran
2- Department of Pediatrics, Loghman-Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3- Department of Microbiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran , seddigh.hadi@gmail.com
Abstract:   (238 Views)
Introduction: Considering the importance of urinary tract infections caused by uropathogenic Escherichia coli (UPEC) in the medical field, this study aimed to investigate serogroups O25 and O16 and the pattern of antibiotic resistance among UPEC isolates obtained from hospitalized patients with urinary tract infections (UTIs) in Rasht hospitals.
Methods: A total of 110 urine samples were collected from patients with UTIs referred to selected hospitals in Rasht. The disk diffusion method, as recommended by the CLSI, was used to determine the pattern of antibiotic susceptibility. Serogroups O25 and O16 were detected using specific primers.
Results: Among the studied samples, 36.4% (40/110) were men and 63.6% (70/110) were women. Based on the antibiotic susceptibility pattern, a high level of antibiotic resistance was observed against nalidixic acid (81.8%) and co-trimoxazole (78.2%), while the most effective antibiotics were amikacin (85.5%) and nitrofurantoin (83.6%). In addition, multi-drug resistant phenotype was found in 72.7% (110/80) of UPEC isolates. According to PCR results, the frequency of serogroups O25 and O16 was 36.4% and 17.3%, respectively. Both serogroups had the highest resistance to nalidixic acid and co-trimoxazole, while the lowest resistance in serogroup O25 to nitrofurantoin (20%) and amikacin (14.3%) and in serogroup O16 to imipenem (5.3%) and nitrofurantoin (10.5%).
Conclusions: This study showed that the high prevalence of MDR strains among UPEC strains is very worrying and professionals should be very careful in prescribing antibiotics for patients. Like most studies, the frequency of serogroup O25 was high, and probably, this serogroup can play a role in causing urinary tract infections and antibiotic resistance of UPEC strains.
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Type of Study: Original Atricle | Subject: Infection
Received: 2022/08/12 | Accepted: 2023/06/11

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