Molecular and epidemiologic characteristics of linezolid-resistant coagulase-negative staphylococci at a tertiary care hospital

被引：29
|
作者：
Kosowska-Shick, Klaudia [1 ]
Julian, Kathleen G. [2 ]
McGhee, Pamela L. [1 ]
Appelbaum, Peter C. [1 ]
Whitener, Cynthia J. [2 ]
机构：
[1] Penn State Hershey Med Ctr, Dept Pathol, Hershey, PA 17033 USA
[2] Penn State Hershey Med Ctr, Dept Med, Hershey, PA 17033 USA
来源：
DIAGNOSTIC MICROBIOLOGY AND INFECTIOUS DISEASE | 2010年 / 68卷 / 01期
关键词：
Staphylococcus epidermidis; Coagulase-negative staphylococci; Linezolid-resistant; Bacteremia; 23S RIBOSOMAL-RNA; AUREUS; EPIDERMIDIS; EMERGENCE; THERAPY; STRAIN;
D O I：
10.1016/j.diagmicrobio.2010.05.007
中图分类号：
R51 [传染病];
学科分类号：
100401 ;
摘要：
We investigated emergence of linezolid resistance among coagulase-negative staphylococci at our tertiary care center in 2007. All 17 cases were healthcare associated, and prior administration of linezolid was documented <= 2 months before first isolation of linezolid-resistant coagulase-negative staphylococci for all but 1 patient. Pulse-field gel electrophoresis analysis of the 14 available strains demonstrated 1 predominant clonal type, suggesting nosocomial spread. In addition to mutations in 23S rRNA and L4 previously described, we observed novel alterations in the 23S rRNA gene (G(2215)A) and in the L3 protein (substitutions L101V, H(146)Q/R, F147I, V154L, M156T). The increase in linezolid-resistant coagulase-negative staphylococci correlated with nosocomial transmission of selected mutated strains in patients who had received linezolid. (c) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码：34 / 39
页数：6
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