Occurrence of Enterococcus faecalis and Enterococcus faecium in Various Clinical Infections: Detection of Their Drug Resistance and Virulence Determinants

Jahansepas, Ali and Aghazadeh, Mohammad and Rezaee, Mohammad Ahangarzadeh and Hasani, Alka and Sharifi, Yaeghob and Aghazadeh, Toofan and Mardaneh, Jalal (2018) Occurrence of Enterococcus faecalis and Enterococcus faecium in Various Clinical Infections: Detection of Their Drug Resistance and Virulence Determinants. Microbial Drug Resistance, 24 (1). pp. 76-82. ISSN 1076-6294

Full text not available from this repository.
Official URL: http://doi.org/10.1089/mdr.2017.0049

Abstract

The aim of this study was to characterize virulence determinants and antibiotic resistance profiles in enterococci obtained from various clinical sources in the northwest of Iran. A total of 160 enterococcal clinical isolates from various wards of University Teaching Hospitals were collected and specified by biochemical test, from September 2014 to July 2015. Identification of enterococci was confirmed by multiplex PCR in the genus and species level. Antibiotic resistance properties and virulence determinants were examined by phenotypic and molecular methods. Of 160 enterococcal isolates, 125 (78.12%) and 35 (21.88%) isolates were identified as Enterococcus faecalis and Enterococcus faecium, respectively. The most common antibiotic nonsusceptible pattern observed was resistance toward rifampicin [n = 122 (76.25%)] followed by erythromycin [n = 117 (73.12%)]. Among all isolates, gelE [n = 140 (87.5%)], cpd [n = 137 (85.6%)], and asa1 [n = 118 (73.8%)] were the most prevalent virulence genes studied. Thirty isolates (11 E. faecalis, 19 E. faecium) were found to be resistant to vancomycin, with minimum inhibitory concentration of ≥256 μg/ml. Twenty-seven isolates carried the vanA gene, whereas none of the isolates carried vanB. E. faecalis had a considerable ability to show virulence genes and drug resistance. Emergence of antibiotic-resistant enterococci and the high prevalence of virulence traits in our study could be regarded as an alarming situation.

Item Type: Article
Subjects: Q Science > QR Microbiology
Depositing User: Unnamed user with email eprints@gmu.ac.ir
Date Deposited: 15 Apr 2018 05:25
Last Modified: 15 Apr 2018 05:25
URI: http://eprints.gmu.ac.ir/id/eprint/365

Actions (login required)

View Item View Item