<abstract xmlns="http://www.w3.org/1999/xhtml"><bold>Objective.</bold> The development of obesity and its metabolic complications is associated with dysregulation of various intrinsic mechanisms, which control basic metabolic processes through changes in the expression of numerous regulatory genes.<bold>Methods.</bold> The expression level of <italic>HLA-DRA</italic>, <italic>HLA-DRB1</italic>, <italic>HLA-G</italic>, <italic>HLA-F</italic>, and <italic>NFX1</italic> genes as well as miR-190b was measured in the blood of obese adolescents without signs of resistance to insulin and with insulin resistance in comparison with the group of relative healthy control individuals without signs of obesity.<bold>Results.</bold> It was shown that obesity without signs of insulin resistance is associated with upregulation of the expression level of <italic>HLA-DRA</italic> and <italic>HLA-DRB1</italic> genes, but with down-regulation of <italic>HLA-G</italic> gene expression in the blood as compared to control group of relative healthy adolescents. At the same time, no significant changes were observed in the expression level of <italic>HLA-F</italic> and <italic>NFX1</italic> genes in the blood of this group of obese adolescents. Development of insulin resistance in obese individuals leads to significant down-regulation of <italic>HLA-DRA</italic>, <italic>HLA-DRB1</italic>, <italic>HLA-G</italic>, and <italic>HLA-F</italic> gene expressions as well as to up-regulation of <italic>NFX1</italic> gene as well as microRNA miR-190b in the blood as compared to obese patients without signs of insulin resistance.<bold>Conclusions.</bold> Results of this study provide evidence that obesity affects the expression of the subset of genes related to immune response in the blood and that development of insulin resistance in obese adolescents is associated with strong down-regulation of the expressions of <italic>HLA-DRA</italic>, <italic>HLA-DRB1</italic>, <italic>HLA-F</italic>, and <italic>HLA-G</italic> genes, which may be contribute to the development of obesity complications. It is possible that transcription factor <italic>NFX1</italic> and miR-190b participate in downregulation of <italic>HLA-DRA</italic> gene expression in the blood of obese adolescents with insulin resistance.</abstract>

Objective. The development of obesity and its metabolic complications is associated with dysregulation of various intrinsic mechanisms, which control basic metabolic processes through changes in the expression of numerous regulatory genes.Methods. The expression level of HLA-DRA, HLA-DRB1, HLA-G, HLA-F, and NFX1 genes as well as miR-190b was measured in the blood of obese adolescents without signs of resistance to insulin and with insulin resistance in comparison with the group of relative healthy control individuals without signs of obesity.Results. It was shown that obesity without signs of insulin resistance is associated with upregulation of the expression level of HLA-DRA and HLA-DRB1 genes, but with down-regulation of HLA-G gene expression in the blood as compared to control group of relative healthy adolescents. At the same time, no significant changes were observed in the expression level of HLA-F and NFX1 genes in the blood of this group of obese adolescents. Development of insulin resistance in obese individuals leads to significant down-regulation of HLA-DRA, HLA-DRB1, HLA-G, and HLA-F gene expressions as well as to up-regulation of NFX1 gene as well as microRNA miR-190b in the blood as compared to obese patients without signs of insulin resistance.Conclusions. Results of this study provide evidence that obesity affects the expression of the subset of genes related to immune response in the blood and that development of insulin resistance in obese adolescents is associated with strong down-regulation of the expressions of HLA-DRA, HLA-DRB1, HLA-F, and HLA-G genes, which may be contribute to the development of obesity complications. It is possible that transcription factor NFX1 and miR-190b participate in downregulation of HLA-DRA gene expression in the blood of obese adolescents with insulin resistance.

Insulin resistance in obese adolescents affects the expression of genes associated with immune response

Department of Molecular Biology, Palladin Institute of Biochemistry, The National Academy of Sciences of Ukraine

Endocrine Regulations

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Objective. The development of obesity and its metabolic complications is associated with dysregulation of various intrinsic mechanisms, which control basic...

Insulin resistance in obese adolescents affects the expression of genes associated with immune response

Published Online: May 13, 2019

Page range: 71 - 82

DOI: https://doi.org/10.2478/enr-2019-0009

Keywords
mRNA expression, HLA-DRA, HLA-DRB1, HLA-F, HLA-G, NFX1, miR-190b, blood, obesity, insulin resistance

© 2019 Dmytro O. Minchenko, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Insulin resistance in obese adolescents affects the expression of genes associated with immune response

Published Online: May 13, 2019

Page range: 71 - 82

DOI: https://doi.org/10.2478/enr-2019-0009

KeywordsmRNA expression, HLA-DRA, HLA-DRB1, HLA-F, HLA-G, NFX1, miR-190b, blood, obesity, insulin resistance

© 2019 Dmytro O. Minchenko, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
mRNA expression, HLA-DRA, HLA-DRB1, HLA-F, HLA-G, NFX1, miR-190b, blood, obesity, insulin resistance