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Increased activation of GATA-3, IL-2 and IL-5 of cord blood mononuclear cells in infants with igE sensitization
University of Helsinki .
University of Helsinki .
University of Helsinki .
University of Helsinki .
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2008 (English)In: Pediatric Allergy and Immunology, ISSN 0905-6157, E-ISSN 1399-3038, Vol. 19, no 2, 132-139 p.Article in journal (Refereed) Published
Abstract [en]

Risk of allergic diseases has been linked to abnormal patterns of fetal immune development, suggesting that priming of the immune system may occur in utero. The aim of the study was to investigate whether the pattern of immune response in cord blood mononuclear cells (CBMC) shows association with allergic diseases and IgE sensitization at 2 yr of age, and to study the effect of maternal probiotic supplementation on CBMC immune responses. CBMC were isolated from 98 neonates in a randomized double-blinded intervention study. CBMC were stimulated with beta-lactoglobulin, and phytohemaglutinin (PHA). Secretion of interferon-gamma (IFN-γ), interleukin-5 (IL-5), and IL-13 was measured by an ELISA; IL-2, IL-4, and IL-10 by a cytokine bead assay. T-cell polarization-associated IL-4 receptor and IL-12R expressions, and the respective transcription factors GATA-3 and T-bet were analyzed with RT-PCR. The above responses were compared with the development of allergic diseases and IgE sensitization at 2 yr of age, and with the maternal probiotic or placebo supplementation. PHA-stimulated GATA-3 expression and IL-2 secretion in CBMC were higher in IgE-sensitized children at an age of 2 yr than in the non-sensitized, non-allergic children (p = 0.03 and 0.026). PHA-induced expression of GATA-3 correlated with IL-5 (p = 0.003, r = 0.300) and IL-13 (p = 0.007, r = 0.278) secretion of CBMC, and IL-5 secretion of β-lactoglobulin-stimulated CBMC was higher in IgE-sensitized children at 2 yr of age than in the non-sensitized, non-allergic children (p = 0.013). Probiotic bacteria had no effect on CBMC immune responses. In CBMC-enhanced induction of GATA-3, which activates several Th2 cytokines genes, was a risk factor for IgE sensitization. The immune deviation towards Th2-type immunity developed already in utero and seemed to modulate the pattern of immune response favoring an IgE response to environmental antigens.

Place, publisher, year, edition, pages
2008. Vol. 19, no 2, 132-139 p.
Keyword [en]
allergic disease, cod blood, GATA-3, IL-5, sensitization
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-42368DOI: 10.1111/j.1399-3038.2007.00593.xLocal ID: 63219OAI: oai:DiVA.org:liu-42368DiVA: diva2:263224
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Vaarala, Outi

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