The adeH and adeS Efflux Pump Genes in Imipenem and Colistin-Resistant Acinetobacter baumannii Clinical Isolates

The adeH and adeS Efflux Pump Genes in Imipenem and Colistin-Resistant Acinetobacter baumannii Clinical Isolates

Introduction: Acinetobacter baumannii is one of the most important causes of nosocomial infections. In this bacteria, several mechanisms contribute to resistance against antimicrobial agents. The present study investigated the prevalence of adeS and adeH genes and the role of efflux pumps in imip...

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Bibliographic Details
Main Authors: Azam Aghili Amjad1, Mohammad Niakan1*, Fatemeh Sameni1, Shahriar Bakhti1, Mansoor Khaledi2, Hamed Afkhami1, Reza Mirnejad2
Format: Article
Language:English
Published: Pasteur Institute of Iran 2022-12-01
Series:Journal of Medical Microbiology and Infectious Diseases
Subjects:
acinetobacter baumannii
efflux pump
ades gene
adeh gene
Online Access:https://jommid.pasteur.ac.ir/article-1-396-en.html
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Summary:Introduction: Acinetobacter baumannii is one of the most important causes of nosocomial infections. In this bacteria, several mechanisms contribute to resistance against antimicrobial agents. The present study investigated the prevalence of adeS and adeH genes and the role of efflux pumps in imipenem and colistin-resistant A. baumannii clinical isolates. Methods: This study included 60 A. baumannii isolates collected from medical centers affiliated with the Shahid Beheshti University of Medical Science, Tehran, Iran. The antibiotic susceptibility pattern was examined using the broth microdilution MIC method according to Clinical and Laboratory Standards Institute (CLSI) guidelines. Also, the adeS and adeH genes were amplified by PCR. Results: The isolates were 100% imipenem-resistant and 86.7% colistin-resistant. All isolates were positive for the 51-blaOXA gene. The adeH and adeS genes were detected in 95% and 80% of the isolates. Conclusion: The high frequency of adeS and adeH efflux pump genes and the high drug resistance in A. baumannii clinical isolates indicated that adeS and adeH efflux pump genes contribute to antibiotic resistance in this species. Therefore, our results provide essential information about high drug resistance in A. baumannii clinical isolates that can help limit the horizontal and vertical transmission of efflux pump genes in antibioticresistant A. baumannii isolates that causes nosocomial infections in susceptible strains.
ISSN:2345-5349
2345-5330

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