Superantigens in Staphylococcus aureus isolated from prosthetic joint infection

被引:8
作者
Kim, Choon K. [1 ,5 ]
Karau, Melissa J. [1 ]
Greenwood-Quaintance, Kerryl E. [1 ]
Tilahun, Ashenafi Y. [3 ]
David, Chella S. [3 ]
Mandrekar, Jayawant N. [4 ]
Patel, Robin [1 ,2 ]
Rajagopalan, Govindarajan [2 ,3 ]
机构
[1] Mayo Clin, Dept Lab Med & Pathol, Div Clin Microbiol, Rochester, MN 55905 USA
[2] Dept Med, Mayo Clin, Div Infect Dis, Rochester, MN USA
[3] Dept Immunol, Mayo Clin, Rochester, MN USA
[4] Mayo Clin, Dept Hlth Sci Res, Div Biomed Stat & Informat, Rochester, MN USA
[5] Vet Hlth Serv, Med Ctr, Div Infect Dis, Seoul, South Korea
关键词
S; aureus; Superantigen; Prosthetic joint infection; ENTEROTOXIN GENE; T-CELLS; COMPARATIVE PREVALENCE; BIOFILM FORMATION; VANCOMYCIN; ENDOCARDITIS; RESISTANT; ANERGY; EGC; PCR;
D O I
10.1016/j.diagmicrobio.2014.11.007
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
Staphylococcus aureus is a common cause of prosthetic joint infection (PJI). The prevalence of superantigens (SAgs) among PJI-associated S. aureus is unknown. Eighty-four S. aureus isolates associated with PJI isolated between 1999 and 2006 were studied. SAg genes, sea, sob, sec, sed, see, seg, seh, sei, and tst, were assayed by PCR. Seventy-eight (92.9%) isolates carried at least 1 SAg gene studied, with 61(72.6%) harboring more than 1. seg was most commonly (70.2%), and seh was least frequently (4.8%) detected. tst-positive isolates were associated with early infection and increased erythrocyte sedimentation rate at diagnosis (P = 0.006 and P = 0.021, respectively). seg and sei were associated with methicillin resistance (P = 0.008 and P = 0.002, respectively). A majority of PJI-associated isolates studied produced biologically active SAgs in both planktonic and biofilm growth modes. SAg genes are prevalent in S. aureus causing PJI. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:201 / 207
页数:7
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