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- W2896522933 endingPage "1800092" @default.
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- W2896522933 abstract "Scope: Alterations in DNA methylation patterns are correlated with aging, environmental exposures and disease pathophysiology; the possibility of reverting or preventing these processes through dietary intervention is gaining momentum. In particular, methyl donors that provide S-adenosyl-methionine for one-carbon metabolism and polyphenols such as flavanols that inhibit the activity of DNA methyltransferases (DNMTs) could be key modifiers of epigenetic patterns. Methods and results: We assessed DNA methylation patterns in publicly available Illumina Infinium 450K methylation datasets from intervention studies with either folic acid + vitamin B12 (GSE74548) or monomeric and oligomeric flavanols (MOF) (GSE54690) in 44 and 13 participants, respectively. Global DNA methylation levels increased in unmethylated regions such as CpG islands and shores following folic acid + vitamin B12 supplementation and decreased in highly methylated regions, including shelves and open-seas following intervention with MOF. After supplementation with folic acid + vitamin B12, epigenetic age, estimated by the Horvath ‘epigenetic clock’ model, was reduced in women with the MTHFR 677CC genotype. Conclusions: The effects of supplementation with folic acid + vitamin B12 and MOF on DNA methylation age are dependent upon gender and MTHFR genotype. Additionally, our findings demonstrate the potential for these dietary factors to modulate global DNA methylation profiles." @default.
- W2896522933 created "2018-10-26" @default.
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- W2896522933 date "2018-11-02" @default.
- W2896522933 modified "2023-10-18" @default.
- W2896522933 title "Dietary Intervention Modifies DNA Methylation Age Assessed by the Epigenetic Clock" @default.
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- W2896522933 doi "https://doi.org/10.1002/mnfr.201800092" @default.
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