616.61-053.2:575:576.5

The prevalence of dysmetabolic nephropathies in children is increasing from year to year, representing a significant problem in the overall structure of kidney diseases in pediatric age. Despite numerous studies dedicated to the issue of dysmetabolic nephropathies in children, the role of epigenetic factors in the pathogenesis of dysmetabolic nephropathy with calcium oxalate crystalluria remains insufficiently explored.
Aim — to identify the leading epigenetic factors in the pathogenesis of dysmetabolic nephropathy with calcium oxalate crystalluria in children. Materials and methods. The data from the medical histories and outpatient records of 173 children were studied. Each child was additionally
examined by narrow specialists of different profiles. Three groups were formed from the examined children: Group I — children with a complicated course of dysmetabolic nephropathy and a history of inflammatory processes in the urinary system (52 children), Group II — children with dysmetabolic nephropathy with persistent crystalluria (56 children) and the Control group, which included 65 healthy children.
Results. The most significant prenatal epigenetic factors are the threat of early miscarriage, gestosis of the first and second halves of pregnancy, maternal anemia during pregnancy, parental alcohol and tobacco use, mother's work on computer during pregnancy, presence of maternal
chronic diseases, parental exposure to industrial dust and noise, and heavy physical work of mother leading to fetal hypoxia.
Conclusion. The most significant postnatal epigenetic factors influencing children's susceptibility to a more severe course of dysmetabolic
nephropathy included low birth weight, early artificial feeding, frequent acute respiratory infections, atopic diathesis, and physiological jaundice
in the first year of life, as well as the presence of concomitant diseases such as chronic tonsillitis, dental caries, frequent acute respiratory infections, chronic gastritis, atopy, and chronic cholecystitis later in life. The study was carried out in accordance with the principles of the Declaration of Helsinki. The study protocol was approved by the Local Ethics Committee of these institutions. The informed consent of the children's parents was obtained for the research. No conflict of interests was declared by the authors. 

УДК 616-035

Упродовж останнього десятиріччя поширеність захворювань органів сечовидільної системи серед дітей раннього віку в Україні не зменшується, незважаючи на успіхи, досягнуті в розвитку методів їх діагностики та лікування. Зростає частота їх нетипового прогредієнтного малосимптомного перебігу. Щороку збільшується і частота природжених вад розвитку органів сечовивідної системи (ПВР ОСС). Вади розвитку органів
сечовидільної системи становлять від 26,0 до 35,0 % усіх випадків природжених вад [1–3]. У зв’язку з цим науковцями розглядаються можливі причини цього і висуваються гіпотези про сукупність несприятливих екзогенних та ендогенних факторів, що реалізують «програму» хвороби на всіх рівнях організму, починаючи з клітинного.

УДК 616.61-053.2:575:576.5

Сьогодні спостерігається тенденція до стійкого зростання захворювань нирок серед дітей різного віку. Поширеність захворювань сечової системи у дітей варіюється значно і становить від 5,6 до 27,5 випадків на 1000 дітей. До найпоширеніших захворювань входять дисметаболічні (обмінні) нефропатії, які становлять від 27% до 64% від усіх випадків захворювань сечової системи у дітей. Усі дисметаболічні нефропатії врешті-решт призводять до утворення кристалів кальцію в ниркових канальцях, що може призвести до розвитку сечокам'яної хвороби, інтерстиційного нефриту, інфекційних ускладнень та хронічної ниркової недостатності. З цієї причини важливим є проведення досліджень щодо функціонального стану паренхіми нирок.

Cow's milk protein allergy is an urgent problem in young children. Early diagnostics and formation of therapeutic tactics are the basic priorities in allergy treatment among young children. Oral provocation tests, which can be performed only in medical establishments, are a golden standard for diagnosing food allergy. Active search continues for optimal scheme of diagnosing cow's milk protein allergy in children in the first year of life. The aim of our research was to create the algorithm of diagnosing cow's milk protein allergy in children younger than one year of age, which will optimize obtaining reliable data on a patient's condition and decrease a load of laboratory examinations on young children using elimination and provocation food test. To complete the set goal, a record of allergological anamnesis, examination, assessment of physical condition and determination of specific IgE to cow's milk proteins were conducted to diagnose cow's milk protein allergy. Then, based on the obtained results, elimination and provocation food test was performed in two phases - elimination phase and provocation phase. Diagnostic in vitro is needed to choose the level of medical establishment for conduction of oral provocation tests: in case a specific IgE index is over 0.7 kU/L, testing is performed in an intensive care unit, if IgE is less than 0.7 kU/L - in a specialized inpatient department. Three clinical cases involving different methods have been presented for diagnosing cow's milk protein allergy - elimination and provocation test, oral provocation test and administration of individual diet based on the obtained results. A complex diagnostic approach, in particular, study of anamnesis, record of nutrition diary, elimination diet, enables to optimize diagnostics of food allergy, and diagnostic addition of a product - to assess tolerance clinically during extension of diet. An elaborated method of diagnosing cow's milk protein allergy in children younger than one year of age can be recommended for wide use in a clinical practice.

To date, various manifestations of allergic reactions and diseases are registered in 15-35% of the population according to the World Health Organization, and in recent years there has been a constant tendency to increase [1]. The first sign of allergic pathology in children, as a rule, is a food allergy, which is mainly manifested by atopic dermatitis. According to official statistics, the rate of atopic dermatitis in Ukraine is known to range from 3 to 10 per 1000 children [2]. However, the results obtained in some regions of our country according to studies under the standardized international program ISAAC (International Study of Asthma and Allergies in Childhood), exceed the above figures by 5-10 times [3]. This situation can be explained by the presence of terminological differences in the interpretation of atopic dermatitis in children, different methodological approaches to statistical research, clinical and age-related polymorphism of the disease. The development of atopic march can begin with a food allergy, so all efforts of physicians should be directed to prevent the transformation of skin forms into respiratory ones and provide the patient and his/her parents with a full quality of life [4,5]. The “School of Atopy” operates under the auspices of the MNPE “Lviv City Children’s Clinical Hospital” and the Lviv City Children’s Allergological Center, where a model of a multidisciplinary approach to the management of patients with food allergies according to European standards was reproduced. Every patient treated for food allergies goes from diagnosis to treatment. Of course, great emphasis is placed on preventing and predicting the development of atopic march in children and improving the quality of life of patients and their parents.