TY - JOUR
T1 - Superantigens in Staphylococcus aureus isolated from prosthetic joint infection
AU - Kim, Choon K.
AU - Karau, Melissa J.
AU - Greenwood-Quaintance, Kerryl E.
AU - Tilahun, Ashenafi Y.
AU - David, Chella S.
AU - Mandrekar, Jayawant N.
AU - Patel, Robin
AU - Rajagopalan, Govindarajan
N1 - Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - 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, seb, 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.
AB - 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, seb, 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.
KW - Prosthetic joint infection
KW - S. aureus
KW - Superantigen
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U2 - 10.1016/j.diagmicrobio.2014.11.007
DO - 10.1016/j.diagmicrobio.2014.11.007
M3 - Article
C2 - 25619753
AN - SCOPUS:84925038731
SN - 0732-8893
VL - 81
SP - 201
EP - 207
JO - Diagnostic Microbiology and Infectious Disease
JF - Diagnostic Microbiology and Infectious Disease
IS - 3
ER -