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Objective:to examine activity and correlative relations for peripheral blood lymphocyte NAD (P)-dependent dehydrogenases in young children with recurrent respiratory infections with hypertrophy of the pharyngeal tonsils and bronchial obstructive syndrome.Methods: 89 children, aged 1-3 years, with recurrent respiratory infections were examined, including 35 children with hypertrophy of pharyngeal tonsils (HPT) and 54 children – with bronchial obstructive syndrome (BOS). Control group contained 20 age-matched healthy children. Activity and relations for peripheral blood lymphocyte for NAD (P)-dependent dehydrogenases were assessed by using bioluminescent method proposed by А.А. Savchenko and L.N. Suntsova (1989).Results: It was found that children with recurrent respiratory infections displayed altered enzyme status in peripheral blood lymphocytes. In particular, activity ribose-5-phosphate- and NAD (P)-dependent metabolic events as well as substrate flux via the tricarboxylic acid cycle were elevated that was paralleled with decreased lactate dehydrogenase anaerobic reaction, thereby implicating a role for malate-aspartate shunt in the energy turnover, substrate efflux from the tricarboxylic acid cycle into amino acid metabolic pathways as well as activity of glutathione reductase. Moreover, features of altered enzymatic profile in peripheral blood lymphocytes were uncovered, which depended on type of complication related to respiratory infection. In addition, children with hypertrophy of pharyngeal tonsils were featured with increased influx of lipid catabolism products into glycolysis, elevated level of malic enzyme activity and decreased pyruvate production. However, children with bronchial obstructive syndrome were found to have decreased glycerol-3-phosphate dehydrogenase activity resulting in lowered shunting activity of slow reactions in Krebs cycle and increased influx of amino acid metabolism intermediates into the tricarboxylic acid cycle. Reshaping of enzymatic profile in peripheral blood lymphocytes depended on type of complications coupled to respiratory infections (ENT-pathology or BOS syndrome). A correlation analysis revealed features of relationship between parameters of NAD (P)-dependent dehydrogenase activity in peripheral blood lymphocytes found in children with hypertrophy of pharyngeal tonsils and bronchial obstructive syndrome marked by quantity, modality and power of correlative links.Conclusion: children with the recurrent respiratory infections require metabolic therapy aimed at restoring intracellular pathology-driven metabolic processes in immune cells.

The objective of our study was to evaluate correlation between the immune pheno-type and activity indices of NAD (P)-dependent dehydrogenases in peripheral blood lymphocytes in young children with hypertrophy of the pharyngeal tonsil (HPT). We have examined 57 children, 1-3 years of age, with hypertrophy of the pharyngeal tonsils (HPT). The control group consisted of 35 healthy children of the same age. The numbers of CD3+, CD4+, CD8+, CD19+, CD16+/56+ lymphoid cells in peripheral blood were determined by flow cytofluorimetry technique. Activity of NAD (P)-dependant dehydrogenases in peripheral blood lymphocytes was studied using bioluminescent method as described elsewhere (А. Savchenko, L. Suntsova, 1989). Correlation analysis has revealed an increase of positive correlations, a decrease of the correlation strength, and emergence of new connections between phenotype and activity indices of NAD (P)-dependent dehydrogenases in peripheral blood lymphocytes in children with hypertrophy of pharyngeal tonsils (HPT). Specific correlation patterns between the phenotype and activity indices of NAD (P)-dependent dehydrogenases in peripheral blood lymphocytes have been revealed in children with hypertrophy of pharyngeal tonsils (HPT).

Objective: to study immunophenotype and NAD-and NAD(P)-dependent dehydrogenase of blood lymphocytes activity indicators in children with hypertrophy of the pharyngeal tonsils (HPT).(Для цитирования: Куртасова Л.М., Шакина Н.А., Лубнина Т.В., Николаева А.И. Изменения иммунофенотипического спектра и ферментного профиля лимфоцитов периферической крови у детей раннего возраста с гипертрофией глоточной миндалины.

Our aim was to study the effect of cycloferon on in vitro susceptibility of peripheral blood leukocytes to interferon-α2 in children with infectious mononucleosis in acute phase caused by Epstein-Barr virus (EBV). Materials and methods were as follows: the study included 23 children 4 to 6 years of age admitted in acute period of infectious mononucleosis. The control group consisted of 15 healthy children of the same age group. In vitro susceptibility of peripheral blood leukocytes to interferon-α2 was determined by the method of L.M. Kurtasova (2007).Four types of in vitro response of peripheral blood leukocytes to interferon-α2 upon induction by cycloferon have been revealed in both healthy children and patients with EBV-positive infectious mononucleosis. Differences in occurrence rates of these 4 types of reactions have been found among patients with EBVinfection, in comparison with the group of healthy children. There was no regular dose-dependent changes in susceptibility of peripheral blood  leukocytes to interferon-α2 in vitro after cycloferon induction in the group of children with EBV-infection. depending on the dose, which have been revealed in healthy children.