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Research Article 


High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains

Gulcin Baldir, Derya Ozturk Engin, Metin Kucukercan, Asuman Inan, Seniha Akcay, Seyfi Ozyurek, Sebahat Aksaray.


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Abstract
Objective: This study sought to identify antibiotic susceptibility rates of enterococcal strains, and to compare the high-level resistance to aminoglycosides (HLAR) in vancomycin-sensitive enterococcal species (VSE) and vancomycin-resistant enterococcal species (VRE).
Materials and Methods: The study included 100 VRE and 100 VSE strains recovered from the samples sent to laboratory from various departments of Haydarpasa Numune Training and Research Hospital.
Results: All VRE strains were defined as Enterococcus faecium, although of the VSE strains, 53% were identified to be as Enterococcus faecalis, 42% E. faecium, 3% Enterococcus durans, and 2% Enterococcus avium. High-level resistance to vancomycin (MIC, >256 µg/ml) was determined in all VRE strains and when analyzing MIC values for teicoplanin, five strains were found to be moderately susceptible (MIC, 16 µg/ml) and 95 strains were resistant (MIC, >32 µg/ml). Of the VRE strains, one was linezolid-resistant (MIC, 12 µg/ml) and the other was intermediately susceptible (MIC, 4 µg/ml) and remainders were evaluated to be susceptible (MIC, <2 µg/ml). In VRE strains, high-level gentamicin resistance (HLGR) was found to be 83% and high-level streptomycin resistance (HLSR) 89%, association of HLSR with HLGR was 78%. In VSE strains, HLGR was found to be 42% and, HLSR 48%, the association of HLSR with HLGR was found to be 36%. HLAR in VRE strains was found to be higher as compared with VSE strains (p <0.005).
Conclusion: Antimicrobial resistance is increasing in enterococci strains. Therefore a follow-up is required resistance pattern including both vancomycin resistance and HLAR.


 
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How to Cite this Article
Pubmed Style

Baldir G, Engin DO, Kucukercan M, Inan A, Akcay S, Ozyurek S, Aksaray S. High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. J Microbiol Infect Dis. 2013; 3(3): 100-103 . doi:10.5799/jmid2013.03.0090

Web Style

Baldir G, Engin DO, Kucukercan M, Inan A, Akcay S, Ozyurek S, Aksaray S. High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. https://www.jmidonline.org/?mno=302657041 [Access: January 09, 2025]. doi:10.5799/jmid2013.03.0090

AMA (American Medical Association) Style

Baldir G, Engin DO, Kucukercan M, Inan A, Akcay S, Ozyurek S, Aksaray S. High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. J Microbiol Infect Dis. 2013; 3(3): 100-103 . doi:10.5799/jmid2013.03.0090


Vancouver/ICMJE Style

Baldir G, Engin DO, Kucukercan M, Inan A, Akcay S, Ozyurek S, Aksaray S. High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. J Microbiol Infect Dis. (2013), [cited January 09, 2025]; 3(3): 100-103 . doi:10.5799/jmid2013.03.0090


Harvard Style

Baldir, G., Engin, . D. O., Kucukercan, . M., Inan, . A., Akcay, . S., Ozyurek, . S. & Aksaray, . S. (2013) High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. J Microbiol Infect Dis, 3 (3), 100-103 . doi:10.5799/jmid2013.03.0090


Turabian Style

Baldir, Gulcin, Derya Ozturk Engin, Metin Kucukercan, Asuman Inan, Seniha Akcay, Seyfi Ozyurek, and Sebahat Aksaray. 2013. High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. Journal of Microbiology and Infectious Diseases, 3 (3), 100-103 . doi:10.5799/jmid2013.03.0090


Chicago Style

Baldir, Gulcin, Derya Ozturk Engin, Metin Kucukercan, Asuman Inan, Seniha Akcay, Seyfi Ozyurek, and Sebahat Aksaray. "High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains." Journal of Microbiology and Infectious Diseases 3 (2013), 100-103 . doi:10.5799/jmid2013.03.0090


MLA (The Modern Language Association) Style

Baldir, Gulcin, Derya Ozturk Engin, Metin Kucukercan, Asuman Inan, Seniha Akcay, Seyfi Ozyurek, and Sebahat Aksaray. "High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains." Journal of Microbiology and Infectious Diseases 3.3 (2013), 100-103 . Print. doi:10.5799/jmid2013.03.0090


APA (American Psychological Association) Style

Baldir, G., Engin, . D. O., Kucukercan, . M., Inan, . A., Akcay, . S., Ozyurek, . S. & Aksaray, . S. (2013) High-level resistance to aminoglycoside, vancomycin, and linezolid in enterococci strains. Journal of Microbiology and Infectious Diseases, 3 (3), 100-103 . doi:10.5799/jmid2013.03.0090


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