Vitamins are a group of biologically highly active, low molecular weight organic compounds of various chemical nature, which are practically not synthesized in the human body or are synthesized in insufficient quantities, mainly income with food, and are vital to ensure for the flow and regulation of metabolic processes in the body. Vitamins are micronutrients that are among the essential (essential) factors of nutrition, their content in food is small, usually in the range from 10 to 100 mg/100 g. Vitamins have an exceptional property — the ability to high biological activity in small doses, without being a source of energy or plastic material, act as biological catalysts for vital body functions. According to physicochemical properties and solubility, vitamins A, E, D belong to fat-soluble, are characterized by thermal stability, resistant to cysts and alkalis, their main characteristic is the ability to promote the assimilation of mаcro- and microelements. Vitamins A, E, D are needed at all stages of growth and development of the child's body, the processes of adaptation. The main types of vitamins metabolism disorders are vitamin deficiency, hypo-, hyper- and dysvitaminosis, polyvitaminosis. It is important to constantly monitor the sufficient content of each vitamins in the daily diet of children. The following methods of assessing vitamin supply are known: clinical, biochemical, calculation of vitamin content. Purpose — to increase knowledgment about the effects of vitamins A, E, D, their importance in metabolism, to analyze the main types of their metabolism disorders, to present possible methods for assessing the supply of vitamins in children. Conclusions. The child's body needs a constant supply of vitamins to maintain their amount at the required level. All vital processes take place in the body during the direct participation of vitamins. Future research in the field of the vitamins A, E, D effects will contribute to a better understanding of their role in ensuring the optimal functioning in a human body. Screening and elimination of vitamin A, E, D deficiency in children can not only improve health, but also help increase the life quality. No conflict of interest was declared by the authors. Key words: vitamins A, E, D, vitamin deficiency, hypovitaminosis, hypervitaminosis, dysvitaminosis, polyvitaminosis, children.
Allergic dermatoses have a special place in the structure of allergic diseases in children due to their weight. The most common allergic skin lesions: simple and allergic contact dermatitis, atopic dermatitis, various forms of eczema, acute and chronic allergic urticaria, Quincke's edema, multiforme exudative erythema (Stevens—Johnson syndrome), acute epidermal necrolysis (Lyell's syndrome), toxicodermias, as well as less common dermatoses, in the pathogenesis of which are leading allergic reactions. Despite a number of research research, the difficulties in the determining of the therapeutic approach of allergic dermatoses in children are still observed. According to the international program documents EAACI (European Academy of Allergy and Clinical Immunology), AAAAI (American Academy of Allergy, Asthma & Immunology), PRACТALL (Practical Allergology Consensus Report) in treatment of allergic dermatoses the leading place takes external therapy, which requires an individual approach and daily care of skin. External therapy consists of local application of emollients, topical glucocorticosteroids, topical calcineurin inhibitors, topical antihistamines, keratolytic, keratoplastic, reparants, epithelializing and anti-inflammatory medications, in the case of complicated clinical course of the disease — antibacterial, antifungal, antiviral medications, also with skin care. Purpose — to increase information on modern possibilities of external therapy of allergic dermatoses in children. External pharmacotherapy of allergic dermatoses should be etiopathogenetic and should affect on the mechanisms of allergic inflammation in the skin, elimination of itching, dryness,so finding ways to improve it will help to control the clinical course of the disease, to reduce disability, will promote to improve the life quality in patients. No conflict of interest was declared by the author. Key words: children, allergy, allergic dermatoses, external therapy, local therapy.
In recent years, in most countries of the world there is a significant increase in allergic skin diseases — allergodermatoses, especially in children. Allergodermatoses include: simple and allergic contact dermatitis, atopic dermatitis, various forms of eczema, acute and chronic allergic urticaria, Quincke's edema, multiforme exudative erythema (Stevens—Johnson syndrome), acute epidermal necrolysis (Lyell's syndrome), toxicodermias, and other less common dermatoses with allergic reactions in the pathogenesis. Various disorders of the morphofunctional state of the skin and immune mechanisms of pathogenesis in children with allergic dermatoses have been insufficiently studied. That is why a promising area of research is to study clinical and paraclinical features of allergic dermatoses in children for identify possible diagnostic criteria. Purpose — to improve the diagnostic of allergic dermatoses in children, to analyze clinical and paraclinical features of the course of allergic dermatoses, to study the indicators of cellular and humoral immunity, cytokine status, biomarkers of sensitization to allergens. Matherials and methods. 50 children with allergic dermatoses and 32 healthy children of the control group aged 1 to 18 years were examined. General clinical, immunological, allergic and statistical research methods were used. Results. The comprehensive study of the clinical manifestations of various allergic dermatoses in children was done. Allergic dermatoses are characterized by pronounced polymorphism of clinical manifestations, acute or chronic stage course, with the development of concomitant pathological polysystemic changes. In children with allergic dermatoses was detected disorders of the cellular immuneity with the development of an imbalance between individual subpopulations of lymphocytes: a decrease of CD3 with an increase of CD4 and a decrease of CD8, a corresponding increase of the immunoregulatory index, as well as an increase of CD20, CD19 and CD16 in the blood. Analysis of humoral immunity in children with allergic dermatoses showed dyssimmunoglobulinemia with decrease concentration of IgA, a significant increase concentration of IgE and a moderate increase concentration of IgM, IgG in the blood. Also in children with allergic dermatoses an increase concentration of circulating immune complexes and histamine in the blood was found. Conclusions. As the result of the conducted research similar immunological mechanisms in the pathogenesis of allergic skin diseases in children were established, together with etiologically significant factors and the only one mechanism for the formation of sensitization to allergens. The obtained data gave grounds to combine all allergic skin lesions in children into the one nosological group of allergic dermatoses. Dedicated clinical and paraclinical criteria of the diseases will promote to verify timely accurate diagnosis. The study was conducted in accordance with the principles of the Helsinki Declaration. The research protocol was approved by the Local Ethics Committee of the institution mentioned in the work. Informed consent of parents of children was obtained for the research. The authors were declare no conflict of interest. Key words: children, allergy, allergic dermatoses, cellular and humoral immunity, cytokine status.
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