en
2008-2835
2008-4625
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gregorian
>2020
>April-June
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32431797
Investigation of Integron-Associated Resistance Gene Cassettes in Urinary Isolates of Klebsiella pneumoniae in Yasuj, Southwestern Iran during 2015-2016
<p>Background: Growing antibiotic resistance among urinary opportunistic pathogens such as <em>Klebsiella pneumoniae (K. pneumonia)</em> has created a worrisome condition in the treatment of the Urinary Tract Infections (UTIs) in recent years. Integrons play a significant role in the dissemination of antibiotic resistance genes. The present study was conducted to investigate class 1-3 integrons and the corresponding resistance gene cassettes in urinary <em>K. pneumoniae</em> isolates.</p>
<p>Methods: In this study, from December 2015 to September 2016, a total of 196 <em>K. pneumoniae</em> isolates were collected from the patients with UTI referred to medical diagnostic laboratories in Yasouj, Southwestern Iran. Antibiotic susceptibility patterns of isolates were determined using 12 antibiotics by the disc diffusion method. Polymerase Chain Reaction (PCR) was used for detection of integron genes (<em>intI1</em>, <em>intI2</em>, and <em>intI3</em>). The variable regions of integrons were amplified by PCR and sequenced to identify the corresponding gene cassettes.</p>
<p>Results: Thirty-nine different antibiotic resistance profiles were observed among <em>K. pneumoniae</em> isolates. Only 12.2% of <em>K. pneumoniae</em> isolates were found to harbor the <em>intI1</em> gene. While 17 (60.7%) out of 28 Multidrug Resistance (MDR) <em>K. pneumoniae </em>isolates carried the <em>intI1</em> gene, only 4.2% of non-MDR isolates harbored <em>intI1</em> gene. Totally 7 different gene cassette arrays were found in the <em>intI1</em> gene of <em>K. pneumoniae</em> isolates. The <em>aadA1 </em>was the most prominent gene cassette. Also, high frequency of <em>dfrA</em> containing gene cassettes was observed.</p>
<p>Conclusion: Continuous monitoring and characterization of integrons and their associated gene cassettes could be helpful in controlling the rising rate of antibiotic resistance.</p>
Antibiotic resistance, Integrons, Iran, Klebsiella pneumoniae
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https://www.ajmb.org/En/Article.aspx?id=20408
https://www.ajmb.org/PDF/En/FullText/20408.pdf
FaribaJahanbinDepartment of Basic Sciences, Islamic Azad University, Yasuj Branch, Yasuj, Iran31536
MasoudMarashifardTreatment Management of Social Security Organization of Kohgiluyeh and Boyer-Ahmad Province, Yasuj, Iran31537
SanazJamshidiDepartment of Basic Sciences, Islamic Azad University, Yasuj Branch, Yasuj, Iran31538
MaryamZamanzadehDepartment of Basic Sciences, Islamic Azad University, Yasuj Branch, Yasuj, Iran31539
MasumehDehshiriCellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran31540
Seyed Ali AsgharMalek HosseiniStudent Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran31541
Seyed SajjadKhoramroozDepartment of Microbiology, Faculty of Medicine, Yasuj University of Medical Sciences, Yasuj, Iran1064