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Epstein-Barr virus and cytomegalovirus are differentially associated with numbers of cytokine-producing cells and early atopy
Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
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2009 (English)In: Clinical and experimental allergy, ISSN 1365-2222, Vol. 39, no 4, 509-17 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: We have previously shown that Epstein-Barr virus (EBV) seropositivity, at 2 years of age, was inversely related to IgE-sensitization and that this effect was enhanced when EBV is combined with cytomegalovirus (CMV) seropositivity. We hypothesize that early exposure to EBV or CMV will affect the cytokine balance in the individual. OBJECTIVE: The aim of this study was to relate the cytokine profile in peripheral blood mononuclear cells (PBMC) to the EBV and CMV serostatus and IgE-sensitization in children at 2 years of age. METHODS: Seventy-five children were followed prospectively from birth until 2 years of age. Their EBV and CMV serostatus was correlated to the numbers of IFN-gamma, IL-4, IL-10 and IL-12-producing PBMC following PHA stimulation in vitro. Skin prick tests and allergen-specific IgE antibodies were used to assess IgE-sensitization. RESULTS: In the study cohort, there was an inverse association between EBV seropositivity and IgE-sensitization but not with CMV seropositivity. Following linear regression analysis, we did not detect any statistically significant associations between children with IgG antibodies against EBV at 2 years of age and the investigated cytokines. However, there was a non-significant tendency to a positive association between high numbers of all individual cytokine-producing cells and EBV seropositivity. Children who were CMV seropositive had significantly higher numbers of IFN-gamma and lower numbers of IL-4-producing cells compared with CMV negative children. There was a significant, positive association between the number of IL-4-producing cells and IgE-sensitization. CONCLUSION: Taken together our results indicate that infections with EBV and CMV in different ways will interact with the immune system and may protect children from developing early atopy.

Place, publisher, year, edition, pages
2009. Vol. 39, no 4, 509-17 p.
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Immunology
Research subject
Immunology
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URN: urn:nbn:se:su:diva-32957DOI: 10.1111/j.1365-2222.2008.03147.xISI: 000264184800009PubMedID: 19055650OAI: oai:DiVA.org:su-32957DiVA: diva2:282039
Available from: 2009-12-18 Created: 2009-12-18 Last updated: 2011-07-13Bibliographically approved

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