Abstract
Staphylococcus aureus produces a large number of potential virulence factors, among these the superantigen toxic shock syndrome toxin-1 (TSST-1). We have recently demonstrated that TSST-1 is involved in the pathogenesis of septic arthritis. Recent data show that the TSST-1 molecule is composed of two distinct domains, one proposed to interact with T cell receptor (TCR) and one with the MHC class II. The aim of this study was to assess if interaction between TSST-1-specific MoAbs directed to sites on the MHC and/or TCR Vbeta affects the development of experimental S. aureus-induced arthritis. For that purpose we used a panel of seven MoAbs, which were injected intraperitoneally before and after inoculation with a TSST-1-producing S. aureus strain. Administration of antibodies did not affect the development of arthritis, suggesting inefficacy of such a procedure in neutralization of exotoxin-mediated disease manifestations.
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