PMID- 31826386 OWN - NLM STAT- MEDLINE DCOM- 20200515 LR - 20200515 IS - 1440-6047 (Electronic) IS - 0964-7058 (Linking) VI - 28 IP - 4 DP - 2019 TI - Genetic and epigenetic regulation of BHMT is associated with folate therapy efficacy in hyperhomocysteinaemia. PG - 879-887 LID - 10.6133/apjcn.201912_28(4).0025 [doi] AB - BACKGROUND AND OBJECTIVES: Hyperhomocysteinaemia (HHcy) is an independent risk factors for several disorders, including cardiovascular disease. The understanding of the relationship among genetic, epigenetic and the efficacy of folate therapy for HHcy remain unclear. This study aim to investigate whether betaine-homocysteine methyltransferase (BHMT) single-nucleotide polymorphisms (SNPs) and DNA methylation are related to the efficacy of folate therapy for HHcy and whether BHMT DNA methylation mediates the SNP-folate therapy efficacy association. METHODS AND STUDY DESIGN: A total of 638 patients with HHcy were involved in this prospective cohort study. Logistic and linear regression was used to explore associations among SNPs, DNA methylation, and folate therapy efficacy. Finally, mediation analysis was performed to investigate whether DNA methylation of BHMT mediates the association between SNPs and folate therapy efficacy. RESULTS: BHMT rs3733890 was significantly associated with folate therapy efficacy (p<0.05). BHMT and BHMT_1 DNA methylation level was significantly associated with folate therapy efficacy (p=0.017 and p=0.028). DNA methylation of BHMT and BHMT_1 mediated 34.84% and 33.06% of the effect of rs3733890 on folate therapy efficacy, respectively. CONCLUSIONS: There has a consistent interrelationship among BHMT genetic variants, methylation levels of BHMT, and folate therapy efficacy. BHMT and BHMT_1 DNA methylation proportionally mediated the effects of rs3733890 SNPs on the efficacy of folate therapy for HHcy. FAU - Li, Dankang AU - Li D AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Yang, Jiao AU - Yang J AD - Department of Nutrition and Food Hygiene School of Public health, Peking University, Beijing, China. FAU - Zhao, Qinglin AU - Zhao Q AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Zhang, Chengda AU - Zhang C AD - Department of International Medicine, Beaumont Health System, MI, United States of America. FAU - Ren, Bingnan AU - Ren B AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Yue, Limin AU - Yue L AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Du, Binghui AU - Du B AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Godfrey, Opolot AU - Godfrey O AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Huang, Xiaowen AU - Huang X AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. FAU - Zhang, Weidong AU - Zhang W AD - Department of Epidemiology, School of Public Health, Zhengzhou University, Henan, China. imooni@163.com. LA - eng PT - Journal Article PL - China TA - Asia Pac J Clin Nutr JT - Asia Pacific journal of clinical nutrition JID - 9440304 RN - 935E97BOY8 (Folic Acid) RN - EC 2.1.1.5 (BHMT protein, human) RN - EC 2.1.1.5 (Betaine-Homocysteine S-Methyltransferase) SB - IM MH - Aged MH - Betaine-Homocysteine S-Methyltransferase/genetics/*metabolism MH - Cohort Studies MH - *Epigenesis, Genetic MH - Female MH - Folic Acid/*therapeutic use MH - Gene Expression Regulation/*drug effects/physiology MH - Genotype MH - Humans MH - Hyperhomocysteinemia/*drug therapy MH - Male MH - Middle Aged MH - Prospective Studies EDAT- 2019/12/12 06:00 MHDA- 2020/05/16 06:00 CRDT- 2019/12/12 06:00 PHST- 2019/12/12 06:00 [entrez] PHST- 2019/12/12 06:00 [pubmed] PHST- 2020/05/16 06:00 [medline] AID - 10.6133/apjcn.201912_28(4).0025 [doi] PST - ppublish SO - Asia Pac J Clin Nutr. 2019;28(4):879-887. doi: 10.6133/apjcn.201912_28(4).0025.