Polymorphic variants of glutathione reductase - new genetic markers of predisposition to type 2 diabetes mellitus

被引:2
|
作者
Azarova, Iuliia E. [1 ]
Klyosova, Elena Yu [1 ]
Polonikov, Alexey, V [1 ]
机构
[1] Kursk State Med Univ, Kursk, Russia
来源
TERAPEVTICHESKII ARKHIV | 2021年 / 93卷 / 10期
基金
俄罗斯科学基金会;
关键词
type 2 diabetes mellitus; glutathione reductase; single nucleotide polymorphism; body mass index; OXIDATIVE STRESS; VEGETABLE INTAKE; OBESITY; FRUIT; QUERCETIN; DISEASE;
D O I
10.26442/00403660.2021.10.201101
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Aim. To study the associations of three common single nucleotide variants of the gene encoding antioxidant system enzyme, glutathione reductase GSR with a predisposition to type 2 diabetes (T2D). Materials and methods. The observational mono -center transverse controlled study involved 1032 type 2 diabetics (640 women, 392 men; mean age 61.1 4.8 years) and 1056 healthy volunteers (676 women, 380 men; mean age 60.9 6.2 years). Eating habits were evaluated retrospectively according to questionnaire data. A 10 ml blood sample was drawn from all participants in the study for genetic and biochemical tests. Genotyping was done with the use of the iPLEX technology on MassArray System. Results. We first identified the relationship of the polymorphisms rs2551715, rs2911678, rs3757918 of the GSR gene with a reduced risk of developing T2D in the Russian population. At the same time, the protective effects of the variants of the glutathione reductase gene manifested only in individuals with normal body weight provided they consumed fresh vegetables and fruits, whereas in those with insufficient consumption of plant foods, as well as in all overweight and obese patients, the protective effect of GSR was not observed. In patients with T2D, the plasma levels of hydrogen peroxide and the glutathione dimer were sharply increased compared with the controls. We also found that the rs2551715 polymorphism was associated with a lower concentration of hydrogen peroxide in the blood plasma of patients with T2D, while SNP rs2911678 was associated with a decrease in the concentration of the oxidized form of glutathione. Bioinformatical analysis confirmed the positive effect of alternative alleles on GSR expression and revealed the closest protein partners of the enzyme and their joint participation in the metabolism of acetyl-CoA, the catabolism of hydrogen peroxide and the control of cellular redox homeostasis. Conclusion. Polymorphic variants of the GSR gene rs2551715, rs2911678, rs3757918 are associated with a predisposition to T2D, but their relationship with the disease is modulated by the consumption of fresh vegetables and fruits and depends on body mass index.
引用
收藏
页码:1164 / 1170
页数:7
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