Production of antibodies to staphylococcal superantigens in atopic dermatitis
Department of
Immunology, Royal Children's Hospital, Parkville, Victoria 3052, Australia
Correspondence to: Dr Kemp. email: kempa{at}cryptic.rch.unimelb.edu.au
Accepted 12
June 1998
Staphylococcal superantigens (SAG) are implicated in the
inflammation of atopic dermatitis. As SAG mediated diseases may be modified by specific antibodies, the antibody response to SAG in atopic
dermatitis was investigated. Immunoglobulin (Ig) G to staphylococcal
enterotoxin A (SEA), staphylococcal enterotoxin B (SEB), and toxic
shock syndrome toxin 1 (TSST-1) were measured by sandwich enzyme linked
immunosorbent assay (ELISA) in 74 children with atopic dermatitis and
111 controls. Controls had detectable IgG to SEA, SEB, and TSST-1,
which increased with age. Atopic dermatitis subjects had an increased
response to SEB at 6 months to 2 years (76% v 42%) and 2 to 7 years (79% v 57%), and equivalent responses to SEA
and TSST-1, compared to controls. It is suggested that increased
responses to SEB relate to increased colonisation and hence exposure to
superantigen producing staphylococcus in atopic dermatitis, and that
inflammation of atopic dermatitis is not caused by an inability to make
antibody to SAG.
© 1998 by Archives of Disease in Childhood
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[Abstract] [Full Text]
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