alexa Abstract | Changes in antimicrobial resistance of Enterococcus spp. Over a few years.

Biomedical Research
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)


In this study, we aimed to review the resistance rates of high-level aminoglycosides compared to the resistance rates of other antimicrobials and review the trends in minimum inhibitory concentration (MIC) for 4 years in enterococci isolates. In the study, 2898 enterococci isolates from clinical specimens in the microbiology laboratory from 2008-2011 were evaluated retrospectively. The identification and antimicrobial susceptibility of the isolates were studied in Phoenix (BD, USA) automated system. MIC50 and MIC90 of the isolates were determined. The distribution of specimens were as follows; 60.6% urine, 18.8% blood, 11.7% wound, 5.7% sterile body fluids, and 3% catheter tips. The resistance rates were for ampicillin, vancomycin, teicoplanin, linezolid, high level gentamicin (HLG) and high level streptomycin (HLS) were determined as: 46%, 14.4%, 15.1%, 1.3%, 44.7%, and 56.5% respectively. MIC50 of the linezolid was determined as 2 μg/ml for four years and MIC90 was determined as 4 μg/ml for 2008, 2009, 2010 and 2 μg/ml for 2011. MIC50 of the ampicillin was determined as 4 μg/ml for 2008 and 2011 and 2μg/ml for 2009 and 2011; MIC90 was determined as 16 μg/ml for four years. MIC50 value of vancomycin was not changed for four years and determined as 1 μg/ml; MIC90 was determined as 32 μg/ml for 2008, 2010, 2011 and 8 μg/ml for 2009. MIC50 value for teicoplanin was determined as 1 μg/ ml for four years; MIC90 was determined as 2 μg/ml for 20096 and 32 μg/ml for other years. In the MIC values of vancomycin significance decrease was seen in 2009 (p<0.001) but after this year a significant increase (p<0.001) was determined. In the MIC values of linezolid a significant increase was determined in 2009 and 2010. A significant decrease, however, was seen in 2011.

To read the full article Peer-reviewed Article PDF image | Peer-reviewed Full Article image

Author(s): Yeliz Tanriverdi Cayci Keramettin Yanik Adil Karadag Hava Yilmaz Saban Esen Murat Gunaydin


Enterococcus spp., MIC, Resistance, Aminoglycosides, Teicoplanin, Vancomycin, 3

Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version