Association of TCF7L2 Genetic Polymorphisms with Type 2 Diabetes Mellitus in the Uygur Population of China

Hua Yao, Zhiqiang Wang, Tingting Wang, Yan Ma, Yinxia Su, Qi Ma, Li Wang and Jun Zhu
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Hua Yao: Xinjiang Key Laboratory of Metabolic Disease Research, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, China
Zhiqiang Wang: Department of Public Health, Xinjiang Medical University, Urumqi, Xinjiang 830011, China
Tingting Wang: Department of Public Health, Xinjiang Medical University, Urumqi, Xinjiang 830011, China
Yan Ma: Department of Public Health, Xinjiang Medical University, Urumqi, Xinjiang 830011, China
Yinxia Su: Department of Public Health, Xinjiang Medical University, Urumqi, Xinjiang 830011, China
Qi Ma: Xinjiang Key Laboratory of Metabolic Disease Research, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, China
Li Wang: Xinjiang Key Laboratory of Metabolic Disease Research, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, China
Jun Zhu: Xinjiang Key Laboratory of Metabolic Disease Research, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, China

IJERPH, 2015, vol. 12, issue 9, 1-18

Abstract: Background: Genetic polymorphisms of the transcription factor 7-like 2 (TCF7L2) gene have been reported to be strongly associated with type 2 diabetes mellitus (T2DM) in Icelandic, Danish and American populations and further replicated in other European populations, African Americans, Mexican Americans, and Asian populations. The aim of the present study was to investigate the association of TCF7L2 gene polymorphisms with T2DM in a Uygur population of China. Methods: 877 T2DM patients and 871 controls were selected for the present study. Two single nucleotide polymorphisms (SNPs) (rs12255372 and rs7901695) were genotyped by using matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry. The associations of SNPs and haplotypes with T2DM and linkage disequilibrium (LD) structure of the TCF7L2 gene were analyzed. Results: For total participants and male, the distribution of rs12255372 alleles and the dominant model (Guanine Guanine (GG) genotype vs. Guanine Thymine (GT) genotype + Thymine Thymine (TT) genotype) showed significant difference between T2DM and control subjects (for allele: p = 0.013 and p = 0.002, respectively; for dominant model: p = 0.028 and p = 0.008, respectively). The distribution of rs7901695 alleles and the dominant model (TT genotype vs. Thymine Cytosine (TC) genotype + Cytosine Cytosine (CC) genotype) for total participants and male showed significant difference between T2DM and control subjects (for allele: both p = 0.001; for dominant model: p = 0.006 and p = 0.008, respectively). Conclusions: Our data suggested that the genetic polymorphisms of the TCF7L2 gene were associated with T2DM in the Uygur population of China.

Keywords: TCF7L2; Single nucleotide polymorphism; Type 2 diabetes mellitus; Case–control study (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2015
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