The sex-specific association of phthalate exposure with DNA methylation and characteristics of body fat in children

Chia Huang Chang, Chian Feng Chen, Yen An Tsai, Shu Li Wang, Po Chin Huang, Bai Hsiun Chen, Ming Tsang Wu, Chu Chih Chen, Chao Agnes Hsiung, Mei Lien Chen

研究成果: 雜誌貢獻文章

摘要

The present study assessed the association between phthalate exposure and mitochondrial DNA (mtDNA) polymerase γ (POLG) methylation along with the potential effect on the characteristics of body fat in children. A total of 152 children were enrolled. The urinary concentrations of phthalate metabolites were measured using ultraperformance liquid chromatography-tandem mass spectrometry. Genomic DNA was extracted from the buffy coat, and bisulfite-treated DNA was subjected to a pyrosequencing assay. In total, 17 CpG sites in the exon 2 region of POLG were included in the analysis. A multivariable regression model was applied to determine whether characteristics of body fat were associated with phthalate exposure and methylation of POLG. After adjustment for covariates, male children with a ten-fold increase in mono-methyl phthalate (MMP) or mono-benzyl phthalate (MBzP) concentrations had significantly higher measurements for total body fat (MMP: β = 6.47%; MBzP: β = 3.54%), and trunk fat (MMP: β = 6.67%; MBzP: β = 3.90%). Male children who had hypermethylation at the 2nd CpG site in exon 2 of POLG also had high measurements for BMI (β = 1.66 kg/m2), waist (β = 4.49 cm) and hip (β = 4.81 cm) circumference, total body fat (β = 5.48%), and trunk fat (β = 6.21%). A dose-response relationship existed between methylation at the 2nd CpG site in exon 2 of POLG and characteristics of body fat (p for trend
原文英語
文章編號139833
期刊Science of the Total Environment
737
DOIs
出版狀態已發佈 - 十月 1 2020

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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    Chang, C. H., Chen, C. F., Tsai, Y. A., Wang, S. L., Huang, P. C., Chen, B. H., Wu, M. T., Chen, C. C., Hsiung, C. A., & Chen, M. L. (2020). The sex-specific association of phthalate exposure with DNA methylation and characteristics of body fat in children. Science of the Total Environment, 737, [139833]. https://doi.org/10.1016/j.scitotenv.2020.139833