The associations of novel vitamin Dmetabolic gene CYP27A1 polymorphism, adiponectin/leptin ratio, and metabolic syndrome in middle-aged taiwanese males

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Abstract

Metabolic syndrome (MetS) confers increased risks of cardiovascular disease (CVD). Both vitamin Dand adipocytokines (especially adiponectin and leptin) have a great impact on CVD and MetS. In vitamin Dmetabolism, the vitamin D25-hydroxylase (CYP27A1) and 25-hydroxyvitamin D1-alpha-hydroxylase (CYP27B1) are two key enzymes. This study aimed to examine the influence of vitamin DCYP27 single nucleotide polymorphisms (SNPs) on adipocytokines and MetS. Cross-sectional data and DNA samples were collected from male volunteers (n = 649, age: 55.7 ± 4.7 years). Two tagging SNPs, CYP27A1 rs4674344 and CYP27B1 rs10877012, were selected from the HapMap project. MetS was significantly associated with the CYP27A1 rs4674344 SNP (P = 0.04) and the ratio of adiponectin/leptin (A/L ratio) was most correlated to the CYP27A1 rs4674344 SNP, appearing to be significantly lower in T-carriers than in AA subjects (3.7 ± 4.0 versus 5.1 ± 6.0, P = 0.001) and significantly negatively associated after adjustment. For each MetS component associated with the CYP27A1 rs4674344 SNP, the A/L ratios were significantly negative in preclinical stage (condition not meeting the individual criteria), except the blood pressure. In conclusion, CYP27A1 rs4674344 SNP, A/L ratio, and MetS are significantly associated and T-carriers might have a higher risk of developing MetS due to low A/L ratios in the preclinical stage.

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Cheng, K. H., Hsi, E., Liu, C. C., Huang, C. N., Lee, Y. C., Chu, C. S., … Lai, W. T. (2015). The associations of novel vitamin Dmetabolic gene CYP27A1 polymorphism, adiponectin/leptin ratio, and metabolic syndrome in middle-aged taiwanese males. International Journal of Endocrinology, 2015. https://doi.org/10.1155/2015/658151

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