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Iranian Journal of Public Health، جلد ۴۵، شماره ۶، صفحات ۸۰۶-۸۱۳
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عنوان انگلیسی Prevalence of Virulence Factors and Vancomycin-Resistant Genes among Enterococcus faecalis and E. faecium Isolated from Clinical Specimens
چکیده انگلیسی مقاله Background: The aim of this study was to determine the occurrence of virulence determinants and vancomycin- resistant genes among Enterococcus faecalis and E. faecium obtained from various clinical sources. Methods: The study was performed on the 280 enterococcal isolated from clinical specimens in Hamadan hospitals, western Iran in 2012-14. Antibiotic susceptibility testing was performed using disk diffusion and Minimal Inhibitory Concentration (MIC) methods. The presence of vancomycin-resistant genes and virulence genes was investigated using PCR. Results: Totally 280 enterococcal isolates were identified as follows: E. faecalis (62.5%) , E. faecium (24%) and Enterococcus spp (13.5%). The results of antibiotic susceptibility testing showed that resistance rates to vancomycin and teicoplanin in E. faecalis and E. faecium isolates were 5% and 73%, respectively. Of Sixty vancomycin-resistant Enterococci strains, fifty-one isolates were identified as E. faecium ( VREfm ) and nine as E. faecalis ( VREfs ). Prevalence of esp, hyl, and asa 1 genes were determined as 82%, 71.6%, and 100%, respectively in E. faecium strains; and 78%, 56/6%, and 97%, respectively in E. faecalis strains. Conclusion: The increased frequency of VREF, as seen with rapid rise in the number of vanA isolates should be considered in infection control practices.
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نویسندگان مقاله مونا نساج | mona nasaj


سید مسعود موسوی | seyed masoud mousavi


سید مصطفی حسینی | seyed mostafa hosseini


محمد رضا عربستانی | mohammad reza arabestani


نشانی اینترنتی http://ijph.tums.ac.ir/index.php/ijph/article/view/7087
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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