Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

Characterization of antimicrobial resistance pattern and molecular analysis among extended spectrum β-lactamase-producing Escherichia coli

Fri Apr 19 00:42:11 2024

(2016) Characterization of antimicrobial resistance pattern and molecular analysis among extended spectrum β-lactamase-producing Escherichia coli. Pharmaceutical Sciences. pp. 279-284. ISSN 1735403X (ISSN)

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Background: Infection is a serious problem in medicine and appropriate antibiotic therapy is very important. Because of broad spectrum activity and low toxicity of β-lactam antibiotics, they are the most commonly used drugs. But, bacterial resistance to β-lactam antibiotics, has been considered as the global healthcare concern. The aim of study was to evaluate the antimicrobial resistance pattern and molecular characterization among ESBL-producing Escherichia coli isolated from patients with diarrhea admitted to a hospital in Ilam, Iran. Methods: Totally, fifty E. coli isolates were investigated. Confirmatory tests for phenotypic detection of ESBLs were performed. Molecular identification of the blaTEM and blaSHV genes was carried out by PCR method. To identify genetic relatedness among isolates, Randomly Amplified Polymorphic DNA (RAPD) analysis was performed. Results: The antibiotic susceptibility results showed that the most effective antibiotic was imipenem and minimum effect was related to gentamicin. Thirty-one isolates (62) were ESBL-producing organisms according to phenotypic method. The distribution of blaTEM and blaSHV genes among ESBL-producing isolates were 20 (64.5) and 6 (19.3), respectively. RAPD-PCR typing among isolates gave us eight different types. Twelve isolates were clustered in genotype A and all of them were ESBL-producer. Conclusion: The present study showed noticeable incidence of ESBL-producing E. coli isolated from outpatients and hospitalized patients with diarrhea. Therefore, it seems that constant supervision is crucial to monitor the ESBL-producing microorganisms in hospitals and community. © 2016 The Authors.

Item Type: Article
Shavalipour, A.UNSPECIFIED
Keywords: BlaSHV BlaTEM ESBL Escherichia coli RAPD-PCR amikacin antiinfective agent ciprofloxacin cotrimoxazole gentamicin imipenem levofloxacin antibiotic resistance Article bacterial gene bacterium identification bacterium isolation blaSHV gene blaTEM gene controlled study extended spectrum beta lactamase producing Escherichia coli gastroenteritis gene location genetic variability genotype incidence Iran nonhuman phenotype polymerase chain reaction random amplified polymorphic DNA
Page Range: pp. 279-284
Journal or Publication Title: Pharmaceutical Sciences
Journal Index: Scopus
Volume: 22
Number: 4
Identification Number:
ISSN: 1735403X (ISSN)
Depositing User: مهندس مهدی شریفی

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