Association between the extent of DNA methylation at the CpG sites of HIF3A and parameters of obesity in the general Japanese population
Mizuno, G.; Yamada, H.; Munetsuna, E.; Yamazaki, M.; Ando, Y.; Fujii, R.; Tsuboi, Y.; Teshigawara, A.; Kageyama, I.; Osakabe, K.; Sugimoto, K.; Ishikawa, H.; Ichino, N.; Ohta, Y.; Ohashi, K.; Hashimoto, S.; Suzuki, K.; Koji Suzuki,
Show abstract
Obesity is a major public health problem worldwide owing to the substantial increase in risk of metabolic diseases. Hypoxia-inducible factors (HIFs) regulate transcriptional responses to hypoxic stress. DNA methylation in the CpG sites of intron 1 of HIF3A is associated with body mass index in the whole blood and adipose tissue. This study investigates the correlation between DNA methylation of HIF3A and parameters of obesity, including thickness of visceral (VAT) and subcutaneous adipose tissues, in the general Japanese population. Participants (220 men and 253 women) who underwent medical examination were enrolled in this cross-sectional study. We used pyrosequencing to quantify DNA methylation (CpG sites of cg16672562, cg22891070, and cg27146050) in HIF3A. DNA methylation of HIF3A was only different in women. Multiple regression analysis showed that DNA methylation level at cg27146050 was associated with thickness of VAT in women. DNA methylation level at cg27146050 also correlated with body mass index and percentage of body fat in women after excluding smokers and non-smokers who quit smoking with the last 5 years. DNA methylation in the CpG site (cg27146050) of HIF3A correlated with parameters of obesity in Japanese women.
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