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BackgroundIn addition to allergen-specific IgE (sIgE), allergen-specific IgG4 (sIgG4) antibodies are also involved in the immune response resulting from an allergen exposure. The aim of our study was to analyze sIgE and sIgG4 patterns in the most common allergic disorders: bronchial asthma, upper airway disorders and atopic dermatitis.MethodsIn this study a screening analysis of blood serum samples from 673 patients aged from 6 months to 17 years with different allergic entities was performed on microarrays. sIgE and sIgG4 levels to the most common allergens were estimated.ResultssIgE response to most pollen allergens is more strongly associated with respiratory diseases than with atopic dermatitis, while sIgE responses to cat and dog dander are more strongly associated with bronchial asthma than with atopic dermatitis and upper airway disorders such as rhinosinusitis and allergic rhinitis. A lower prevalence of sIgG4 to pollen allergens in cases of atopic dermatitis is observed compared with that in cases of asthma and upper airway disorders. Analyzing all the allergic disorders, one can see that sIgG4 response to inhalant allergens is strongly associated with sensitization to the corresponding allergen.ConclusionAllergen-specific IgE and IgG4 patterns that are relevant to concrete allergic diseases differ by sIgE and sIgG4 prevalences to defined allergens.Electronic supplementary materialThe online version of this article (10.1186/s40413-018-0220-5) contains supplementary material, which is available to authorized users.

This literature review is focused on the application of polychromatic and monochromatic polarized light for the treatment of various diseases of the childhood including those in the newborns and the premature babies. The analysis of the data of scientific research gives evidence of the beneficial effect of polychromatic polarized light on the clinical course of various skin diseases in the newborn children. Moreover, the improved immunological and reparative processes were revealed after the surgical interventions for congenital heart defects in the newborns. The light-induced changes in the skin contribute to the realization of therapeutic effects of polarized polychromatic light in such children's diseases as atopic dermatitis, bronchitis, bronchial asthma, neurogenic urinary bladder dysfunction, and the traumatic injuries of the limbs. The biologically positive physiological effects of monochromatic polarized light are known to contribute to the improvement of the clinical and functional status in the children presenting with bronchial asthma and in the patients frequently suffering from acute respiratory diseases. The versatility of the biological effects of polarized light taken together with the possibility of its application from the first days of the child's life, the short duration of the procedure, the absence of unpleasant sensations and contact between the damaged surface and the device as well as the simplicity of using the equipment determine the promising prospects for the use of the proposed method in the clinical pediatric practice.

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Bronchopulmonary dysplasia is one of the most significant early childhood chronic respiratory diseases. The article features modern approaches to preventing, diagnosing and treating broncho-pulmonary dysplasia, as well as ways of preventing complications and undesirable disease outcomes in patients older than 3 years. Members of professional associations — Union of Pediatricians of Russia and Russian Association of Perinatal Medicine Specialists — have summarized the experience of managing this category of patients at leading Russian pediatric centers according to the principles of evidence-based medicine and have provided scientific and practical data corresponding to the world level of knowledge with regard to the present problem.