The calcium-sensing receptor R990G polymorphism is associated with increased risk of hypertriglyceridemia in obese Chinese

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DOIResolve DOI: http://doi.org/10.1016/j.gene.2013.09.122
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TypeArticle
Journal titleGene
ISSN0378-1119
Volume533
Issue1
Pages6771; # of pages: 5
Subjectcalcium sensing receptor; triacylglycerol; adult; aged; article; body mass; Chinese; controlled study; exon; female; gene frequency; genetic association; genetic polymorphism; genetic risk; genotype; high risk population; homozygosity; human; hypertriglyceridemia; major clinical study; male; obesity; pathogenesis; priority journal; triacylglycerol blood level
AbstractBackground: We have demonstrated that the calcium-sensing receptor (CaSR) is involved in lipid metabolism; however, whether CaSR polymorphisms affect lipid metabolism in obesity is still unclear. The present study aimed to determine the effects of CaSR polymorphisms on HTG risk in obese Chinese. Methods: A total of 972 subjects with HTG and 1197 with normal triglyceride (NTG) were stratified by body mass index (BMI) into normal weight, overweight or obesity subgroups. After 12-h fasting, CaSR polymorphisms in exon 7 were determined in the blood. Serum lipids and glucose, as well as height, body weight and waist circumference were measured. The anthropometric and metabolic characteristics of the NTG subjects were re-evaluated 3. years later. Results: There were no genotypic or allelic distribution differences for the A986S or Q1011E polymorphisms between the NTG and HTG groups. However, the G/G genotypic and G allelic distributions of the CaSR R990G polymorphism in the HTG group were higher than the NTG group (p<. 0.001). After stratification, in obese subjects, the homozygous (G/G) distribution of the CaSR R990G polymorphism in the HTG group was significantly higher than in the NTG group (p= 0.001), and showed an increased risk of HTG at baseline [OR. = 2.55, 95% CI. = 1.65-3.92, p<. 0.006]. Interaction of the CaSR R990G polymorphism with BMI was associated with increased risk of HTG (β= 0.927, p< 0.001). Re-evaluation of the NTG subjects revealed significantly increased serum triglyceride levels in obese homozygous versus wildtype carriers (p< 0.05). Conclusions: These results suggest that the CaSR R990G polymorphism is associated with increased risk of HTG, especially in obese Chinese, and may be a potential genetic predictor of diseases related to HTG. •The CaSR polymorphisms were determined in 2169 subjects.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aquatic and Crop Resource Development
Peer reviewedYes
NRC number55826
NPARC number21270836
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Record identifier1e6c2da1-a9a9-4624-ac00-78ac57e8f1ac
Record created2014-02-17
Record modified2016-05-09
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