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- Title
GC gene polymorphisms found with type 2 diabetes and low vitamin D status among rural Chinese in Henan province.
- Authors
Mingming Feng; Dongdong Zhang; Yiming Liu; Tong Zhao; Haoyue Huang; Luoya Zhang; Xing Li; Wenjie Li; Feng, Mingming; Zhang, Dongdong; Liu, Yiming; Zhao, Tong; Huang, Haoyue; Zhang, Luoya; Li, Xing; Li, Wenjie
- Abstract
<bold>Background and Objectives: </bold>Accumulating evidence suggests that vitamin D may be involved in the pathogenesis of type 2 diabetes (T2D). Group-specific component (GC) gene is the most important transporter of vitamin D and plays a regulatory role in vitamin D metabolism. We aimed to evaluate the association of GC gene polymorphisms with T2D susceptibility and vitamin D status in the Chinese rural population.<bold>Methods and Study Design: </bold>A total of 1372 subjects were eligible in this cross-sectional study. Three SNPs of the GC gene (rs7041, rs4588, and rs2282679) were genotyped by TaqMan probe assays. Logistic regression and Kruskal-Wallis one-way analysis were performed to determine the possible risk genotype for T2D and vitamin D metabolite concentrations, respectively.<bold>Results: </bold>The serum 25-hydroxyvitamin D3 [25(OH)D3] and vitamin D binding protein (DBP) concentrations were significantly lower in the T2D group than the non-T2D group. GG genotype carriers of rs7041 (T>G) were more likely to have T2D compared with AA carriers (OR=2.00, 95% CI: 1.19-3.37). Variants of rs4588 (C>A) and rs2282679 (A>C) were associated with a lower risk of T2D under the dominant inheritance model (OR=0.65, 95% CI: 0.48-0.88; OR=0.66, 95% CI: 0.49-0.90, respectively). We further found that non-T2D subjects with the AA genotype of rs4588 had significantly higher 25(OH)D3 concentrations than the CC genotype (p=0.022). In contrast, the T2D cases with the CC genotype of rs2282679 had lower DBP concentrations compared to the AA genotype (p=0.020).<bold>Conclusions: </bold>Our study indicates a potential role for GC gene polymorphisms in T2D susceptibility and vitamin D metabolite concentrations in the Chinese rural population.
- Subjects
CHINA; CROSS-sectional method; GENETIC polymorphisms; TYPE 2 diabetes; VITAMIN D; GENOTYPES; CARRIER proteins; RURAL population
- Publication
Asia Pacific Journal of Clinical Nutrition, 2022, Vol 31, Issue 2, p331
- ISSN
0964-7058
- Publication type
journal article
- DOI
10.6133/apjcn.202206_31(2).0019