Features of the immune and metabolomic profile in overweight children associated with polymorphic variants of the IL-1B and TP53 genes

Abstract

Background. The growing number of overweight children is an important problem of modern healthcare. Excess body weight causes the risk of severe metabolic disorders developing. Analysis of changes in the immune, metabolic, and genetic profile of overweight children as markers of the early development of metabolic disorders is an effective tool for the prevention, diagnosis, and treatment of these pathologies.

Aim. To identify the features of the immune and metabolomic profile in overweight children aged 7–11 years associated with polymorphic variants of the IL-1B (rs1143634) and TP53 (rs1042522) genes.

Material and methods. 132 children aged 7–11 years were examined: 54 children with overweight and 78 children with normal body weight. The lymphocytes subpopulation composition was analyzed by flow cytometry; the content of leptin, cortisol, superoxide dismutase, lipid hydroperoxide and interleukin-1β — using enzyme immunoassay, immunoglobulin G — using the method of radial immunodiffusion method by Mancini. Polymorphic variants of the IL-1B (rs1143634) and TP53 (rs1042522) genes were identified by real-time polymerase chain reaction. Statistical data processing was implemented in the Statistica 10, SNPStat and Gen-Expert programs.

Results. The immune profile of the examined children was characterized by an increased content of CD3+CD8+-, CD19+-lymphocytes and immunoglobulin G against the background of CD3+CD4+-lymphocytes, p53 deficiency and a decrease in the number of CD4+/CD8+. The metabolomic profile of children was characterized by an excess content of leptin, cortisol, lipid hydroperoxides, and superoxide dismutase. The identified changes in immune and metabolomic regulation in overweight children were significantly associated with the G allele and GG genotype of the IL-1B gene (rs1143634), as well as with the C allele and CC genotype of the TP53 gene (rs1042522), which cause the initiation of inflammation and inhibition of apoptosis.

Conclusion. The established features of immune and metabolomic regulation associated with the G allele and GG genotype of the IL-1B gene (rs1143634) and with the C allele and CC genotype of TP53 gene (rs1042522) represent a complex of markers of overweight formation in children aged 7–11 years.

Keywords

children / overweight / immune profile / humoral regulation / genetic polymorphism

References

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