Research Article

Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital

Volume: 9 Number: 2 August 31, 2025
TR EN

Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital

Abstract

Aim: Extended-spectrum beta-lactamases (ESBL) play an important role in the development of resistance to beta-lactam antibiotics in Gram-negative bacteria. ESBL-producing bacteria can cause outbreaks, especially in hospital infections, which can lead to inadequate treatment, prolonged hospital stay, and increased mortality rates. This study aimed to investigate the antibiotic resistance profiles and ESBL production rates in Escherichia coli and Klebsiella spp. species isolated from various clinical samples in a tertiary care hospital. Materials and Methods: A total of 315 bacterial isolates were included in the study between September 2022-January 2023. 213 of them were E.coli (67.6%) and 102 were Klebsiella spp. (32.4%). Antibiotic susceptibilities of the isolates; ampicillin, amoxicillin-clavulanate, piperacillin/tazobactam, cefuroxime, cefixime, cefotaxime, gentamicin, amikacin, ciprofloxacin, trimethoprim-sulfamethoxazole, imipenem and meropenem were tested. ESBL production was evaluated with a double disk synergy test. The results were interpreted according to EUCAST criteria. Results: ESBL positivity rate was determined as 35.2% in E.coli isolates and 52.9% in Klebsiella spp. isolates. This rate was found as 22% in pediatric patients and 42% in adult patients. When evaluated according to gender, ESBL positivity was found to be significantly higher in male patients. According to clinical sample types, ESBL positivity was seen most in endotracheal aspirate and wound samples. According to the disk diffusion test, the highest resistance was detected against beta-lactam group antibiotics and the lowest resistance was detected against carbapenems. Conclusion: ESBL production continues to be a significant resistance problem in hospital infections. This study draws attention to the importance of detecting ESBL-positive isolates with the double disk synergy test. Incorrect and unnecessary antibiotic use is one of the main risk factors for increasing ESBL positivity rates. Therefore, early detection of ESBL-positive bacteria, isolation precautions and reconsideration of antibiotic policies are of great importance.

Keywords

Supporting Institution

The study supported by the Lokman Hekim University Scientific Research Projects Coordination Unit with project number TYL-2023-28.

Project Number

TYL-2023-28

Ethical Statement

The study was approved by the Lokman Hekim University Non-Interventional Clinical Research Ethics Committee on 12.05.2022 (Decision No: 2022/77)

References

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Details

Primary Language

English

Subjects

Medical Bacteriology

Journal Section

Research Article

Early Pub Date

September 10, 2025

Publication Date

August 31, 2025

Submission Date

July 12, 2025

Acceptance Date

July 22, 2025

Published in Issue

Year 2025 Volume: 9 Number: 2

APA
Şahin, S., & Göçer, S. (2025). Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital. Journal of Biotechnology and Strategic Health Research, 9(2), 124-132. https://doi.org/10.34084/bshr.1741050
AMA
1.Şahin S, Göçer S. Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital. J Biotechnol and Strategic Health Res. 2025;9(2):124-132. doi:10.34084/bshr.1741050
Chicago
Şahin, Semra, and Safiye Göçer. 2025. “Antibiotic Resistance Profiles and ESBL Production in E.Coli And Klebsiella Spp. Isolated From Clinical Samples in a Tertiary Care Hospital”. Journal of Biotechnology and Strategic Health Research 9 (2): 124-32. https://doi.org/10.34084/bshr.1741050.
EndNote
Şahin S, Göçer S (August 1, 2025) Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital. Journal of Biotechnology and Strategic Health Research 9 2 124–132.
IEEE
[1]S. Şahin and S. Göçer, “Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital”, J Biotechnol and Strategic Health Res, vol. 9, no. 2, pp. 124–132, Aug. 2025, doi: 10.34084/bshr.1741050.
ISNAD
Şahin, Semra - Göçer, Safiye. “Antibiotic Resistance Profiles and ESBL Production in E.Coli And Klebsiella Spp. Isolated From Clinical Samples in a Tertiary Care Hospital”. Journal of Biotechnology and Strategic Health Research 9/2 (August 1, 2025): 124-132. https://doi.org/10.34084/bshr.1741050.
JAMA
1.Şahin S, Göçer S. Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital. J Biotechnol and Strategic Health Res. 2025;9:124–132.
MLA
Şahin, Semra, and Safiye Göçer. “Antibiotic Resistance Profiles and ESBL Production in E.Coli And Klebsiella Spp. Isolated From Clinical Samples in a Tertiary Care Hospital”. Journal of Biotechnology and Strategic Health Research, vol. 9, no. 2, Aug. 2025, pp. 124-32, doi:10.34084/bshr.1741050.
Vancouver
1.Semra Şahin, Safiye Göçer. Antibiotic Resistance Profiles and ESBL Production in E.coli And Klebsiella spp. Isolated From Clinical Samples in a Tertiary Care Hospital. J Biotechnol and Strategic Health Res. 2025 Aug. 1;9(2):124-32. doi:10.34084/bshr.1741050

Journal of Biotechnology and Strategic Health Research