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Journal of Clinical Microbiology, April 1998, p. 1042-1045, Vol. 36, No. 4
Centre National de Référence des
Staphylocoques,
Received 8 October 1997/Returned for modification 16 December
1997/Accepted 20 January 1998
The presence of staphylococcal superantigenic toxins in the
supernatants of liquid cultures was detected by an easy and rapid method assessing the activation of T lymphocytes by cytofluorimetric measurement of CD69 expression. Staphylococcus aureus cells
were grown in Eagle's minimum essential medium supplemented with 5% heat-inactivated fetal calf serum. Supernatant fluids from all S. aureus strains producing superantigen-related toxins, including enterotoxins A to E, toxic shock syndrome toxin, and exfoliative toxins
A and B, induced CD69 expression in a significantly higher number of T
cells than a cutoff of 2%. This CD69 assay might be used for initial
detection of superantigens from S. aureus strains isolated
in the context of staphylococcal toxemia or related chronic human
diseases such as atopic dermatitis or Kawasaki syndrome.
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Detection of Staphylococcal Superantigenic Toxins by a
CD69-Specific Cytofluorimetric Assay Measuring T-Cell
Activation
*
Corresponding author. Mailing address: Laboratoire de
Bactériologie, Faculté de Médecine, rue Guillaume
Paradin, 69372 Lyon cedex 08, France. Phone: (33) 47 877.86.57. Fax:
(33) 47 877.86.58. E-mail: geralina{at}univ-lyon1.fr.
Journal of Clinical Microbiology, April 1998, p. 1042-1045, Vol. 36, No. 4
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
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