eISSN: 1897-4317
ISSN: 1895-5770
Gastroenterology Review/Przegląd Gastroenterologiczny
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SCImago Journal & Country Rank
6/2011
vol. 6
 
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abstract:
Original paper

TLR4 receptor and selected cytokines in development of food allergy in infants and small children

Barbara Kamer
,
Karolina Kulig
,
Przemysław Lewkowicz
,
Ewa Głowacka
,
Andrzej Sasiak
,
Henryk Tchórzewski

Przegląd Gastroenterologiczny 2011; 6 (6): 370–375
Online publish date: 2011/12/03
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Introduction : Food allergy (FA) in infants and small children is an important and rising problem. TLR4 is the main receptor recognizing lipopolysaccharide (LPS) and belonging to the Toll-like receptor (TLR) family. Triggering this receptor leads to activation of nuclear factor κB (NF-κB) and interferon regulatory factors (IRFs) and expression of genes included in immunological reactions.

Material and methods : Fifty children (aged 1-36 months) were included in this study: 35 children with food allergy (17 of them with IgE-dependent allergy, 18 with IgE-independent allergy) and 15 healthy children without any allergy. In this work mRNA expression of TLR4 receptor on neutrophils and concentrations of selected Th1/Th2 cytokines were evaluated.

Results : We observed lower mRNA TLR4 expression in children with food allergy especially IgE-independent food allergy. Furthermore, higher concentrations of IL-4, IL-5 and IL-10 in children with food allergy compared with children from the control group were found. Estimated mRNA expression of TLR4 on neutrophil surfaces was negatively correlated with serum concentration of IL-4 and positively correlated with IFN-γ serum levels in children with IgE-dependent FA.

Conclusions: Results of this study suggest a role of innate immunity in the development of food allergy and evaluation of this immunity can be helpful in diagnosis of allergy in small children. Streszczenie
keywords:

allergy, young children, TLR4, cytokines

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