Document Detail

Specific patterns of responsiveness to microbial antigens staphylococcal enterotoxin B and purified protein derivative by cord blood mononuclear cells are predictive of risk for development of atopic dermatitis.
MedLine Citation:
PMID:  12680857     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Mononuclear cells from children with active atopic dermatitis (AD) have been reported to be hyper-responsive to certain microbial stimuli, in particular staphylococcal enterotoxin B (SEB). However, it is not known whether this responsiveness is acquired during disease development, or is inherent. We investigated this question in a cohort of children at high risk of atopy followed prospectively from birth to age 3 years. We asked whether their cord blood mononuclear cell (CBMC) cytokine responses to SEB, to an unrelated microbial stimulus purified protein derivative (PPD), or to common allergens, were predictive of risk for subsequent AD development during infancy. METHODS: Children at high risk of developing atopy were randomly selected from an ongoing prospective cohort. Cord blood was collected at birth. The children were seen at 6 months, 1, 2 and 3 years and examined for the development of AD. IFN-gamma, IL-5, IL-10 and IL-13 production by CBMC cultured in the presence of SEB, PPD, PHA, house dust mite (HDM) allergen, ovalbumin (OVA) and cat allergen was determined. RESULTS: SEB-induced IL-5 production by CBMC was elevated in children who developed AD at 6 months (P = 0.01) and 2 years (P = 0.009). PPD-induced IL-5 responses were also elevated in CBMC from children who developed AD at 6 months, 2 years and 3 years (P = 0.05, P = 0.06 and P = 0.06, respectively), as were PPD-induced IL-10 responses (P = 0.05 at 1 years, P = 0.007 at 2 years, P = 0.003 at 3 years) and corresponding IFN-gamma responses (P = 0.05 at 6 months, P = 0.003 at 2 years, P = 0.0004 at 3 years). Increased IL-10 responses to HDM allergen were also observed throughout the observation period in CBMC from children who developed AD. CONCLUSION: Children who develop infantile AD appear to have a predisposition to respond to SEB in a Th2-dominant manner involving selective stimulation of IL-5 production. The increased IL-10 and IFN-gamma induced in response to PPD by children with AD may point to additional intrinsic differences in responses to microbial stimuli between those at high vs. those at low risk for AD, which merit more detailed investigations.
M J Sharp; J Rowe; M Kusel; P D Sly; P G Holt
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology     Volume:  33     ISSN:  0954-7894     ISO Abbreviation:  Clin. Exp. Allergy     Publication Date:  2003 Apr 
Date Detail:
Created Date:  2003-04-08     Completed Date:  2003-07-21     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8906443     Medline TA:  Clin Exp Allergy     Country:  England    
Other Details:
Languages:  eng     Pagination:  435-41     Citation Subset:  IM    
TVW Telethon Institute for Child Health Research and Centre for Child Health Research, Faculty of Medicine and Dentistry, The University of Western Australia, Perth, Western Australia.
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MeSH Terms
Cells, Cultured
Child, Preschool
Dermatitis, Atopic / immunology*
Enterotoxins / pharmacology*
Fetal Blood / immunology*
Infant, Newborn
Interferon-gamma / immunology
Interleukin-10 / immunology
Interleukin-5 / immunology*
Leukocytes, Mononuclear / immunology*
Prospective Studies
Statistics, Nonparametric
Th2 Cells / immunology
Reg. No./Substance:
0/Enterotoxins; 0/Interleukin-5; 130068-27-8/Interleukin-10; 39424-53-8/enterotoxin B, staphylococcal; 82115-62-6/Interferon-gamma

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