Immunological biomarkers changes during diet therapy in children with food allergy

Abstract

Immunological estimating of different diet therapy types became currently very important. The aim of this work was to study the changes of immunological biomarkers during usage of formulas based on different sources of protein in children with food allergy and to assess and predict the effectiveness of diet therapy. The study included 66 children with food allergy in age from 1,5 months to 1,5 years. Observed children were divided into three groups depending on the type of formulas used. The dynamics of immunoregulatory substances (IL-5, TGF β 1, IL-10, IL-4, IL-2, IL-13, Eotaxin3), and allergenspecific IgE and IgG antibodies to cow’s milk protein, α-lactoglobulin, β-laktoglobulin, casein, soy and goat’s milk during diet therapy were evaluated. Observation duration was 28-30 days. The differences in the dynamics of the investigated parameters depending on the type of formula were revealed. Thus, the use of formula based on cow’s milk hydrolysates revealed their primarily effect on cytokines IL-2, IL-5 and growth factor TGF β ; the use of formula based on soy protein revealed combined effect on humoral immunity (allergen specific IgE and IgG antibodies) and IL-5; the use of formula based on goat milk characterized decreased levels of allergenspecific IgG antibodies to the cow’s milk protein and its fractions, reduced allergen specific IgE antibody concentrations to cow’s milk protein and α-lactoglobulin, decreased levels of IL-5, and, exclusive for this formula - reduction of IL-4 level. Accordingly, the assessment of immunological biomarkers can be used to personalize diet therapy in children with food allergy.