The single nucleotide polymorphism upstream of insulin-induced gene 2 (INSIG2) is associated with the prevalence of hypercholesterolaemia, but not with obesity, in Japanese American women
Copyright policy )The single nucleotide polymorphism upstream of insulin-induced gene 2 (INSIG2) is associated with the prevalence of hypercholesterolaemia, but not with obesity, in Japanese American women
Insulin-induced gene 2 (insig-2) protein is known to play important roles in cholesterol and TAG metabolism bothin vivoandin vitro. One particularly interesting single nucleotide polymorphism (SNP), rs7566605, located 10 kb upstream ofINSIG2was reported to have the strongest association with obesity among 86 604 SNP, while the relationship with dyslipidaemia is uncertain. Eight hundred and eighty-five Japanese Americans (347 men and 538 women) and 378 Japanese (182 men and 196 women) were enrolled, and the rs7566605 SNP, which is consistent with either G or C, was determined. We investigated the association between the rs7566605 SNP and the prevalence of hypercholesterolaemia or hypertriacylglycerolaemia, or obesity parameters, as assessed by BMI, waist girth and percentage body fat. There were no significant differences in BMI, waist girth and percentage body fat according to the genotype in each of the four groups, which was divided by population and sex. The prevalence of hypercholesterolaemia was significantly different between the genotypes in Japanese American female subjects (GG, 62·2 %; GC, 57·1 %; CC, 42·1 %;P = 0·021), but not in the other subjects. In Japanese American women, the subjects with the CC genotype had a 0·43-fold decreased risk (95 % CI 0·24, 0·80) for hypercholesterolaemia compared with the GG genotype after adjustment for age, percentage body fat, smoking status and hormone replacement therapy. The CC genotype of the rs7566605 SNP is suggested to be a protective genetic factor against the progression of hypercholesterolaemia on a high-fat diet, especially in Japanese female subjects.
- Hiroshima University Japan
Male, Asian, Genotype, Cholesterol, HDL, Hypercholesterolemia, Intracellular Signaling Peptides and Proteins, Membrane Proteins, Middle Aged, Polymorphism, Single Nucleotide, Cholesterol, Logistic Models, Gene Frequency, Japan, Odds Ratio, Humans, Female, Genetic Predisposition to Disease, Obesity, Triglycerides, Aged
Male, Asian, Genotype, Cholesterol, HDL, Hypercholesterolemia, Intracellular Signaling Peptides and Proteins, Membrane Proteins, Middle Aged, Polymorphism, Single Nucleotide, Cholesterol, Logistic Models, Gene Frequency, Japan, Odds Ratio, Humans, Female, Genetic Predisposition to Disease, Obesity, Triglycerides, Aged
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