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. 1991 Aug;85(2):288–292. doi: 10.1111/j.1365-2249.1991.tb05720.x

Serum levels of soluble IL-2 receptor, IL-4 and IgE-binding factors in childhood allergic diseases.

T Matsumoto 1, T Miike 1, K Yamaguchi 1, M Murakami 1, T Kawabe 1, J Yodoi 1
PMCID: PMC1535738  PMID: 1864009

Abstract

The serum levels of soluble IL-2 receptor (sIL-2R), IL-4 and IgE-binding factors were examined in children with allergic diseases, and compared with those in non-allergic controls of the same age and sex. The results showed age-related decreases in the serum levels of sIL-2R and IgE-binding factors, but not in that of IL-4 in both allergic and non-allergic individuals. Significant elevation of sIL-2R was observed in sera from children with atopic eczema or history of an anaphylactic reaction to food, as compared with that in non-allergic controls. The serum concentration of IL-4 was elevated in all allergic groups, including cases of atopic eczema, bronchial asthma and anaphylaxis to food, compared with non-allergic controls, and was correlated significantly with the serum level of IgE (r = 0.59). The IgE-binding factor levels in sera from patients aged 6-10 years with bronchial asthma, or patients aged 1-5 years with a history of food anaphylaxis were elevated as compared with those in non-allergic controls of same age. There was no significant correlation between the serum levels of IgE-binding factors and IgE. Since sIL-2R is released by activated T cells, the present study is in favour of T cell activation causing allergic skin disorders. The serum levels of IL-4 as well as IgE did not differ among allergic patients of different clinical categories. The role of IgE in atopic eczema and other allergic diseases is not clearly established; however, it seems likely that IL-4 is deeply involved in the increased production of IgE seen in allergic individuals. The possible involvement of IgE-binding factors in the age-related changes of clinical manifestations in childhood allergic diseases was also discussed.

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Selected References

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