Dataset Information

Gene response elements, genetic polymorphisms and epigenetics influence the human dietary requirement for choline.

ABSTRACT: Recent progress in the understanding of the human dietary requirement for choline highlights the importance of genetic variation and epigenetics in human nutrient requirements. Choline is a major dietary source of methyl-groups (one of choline's metabolites, betaine, participates in the methylation of homocysteine to form methionine); also choline is needed for the biosynthesis of cell membranes, bioactive phospholipids and the neurotransmitter acetylcholine. A recommended dietary intake for choline in humans was set in 1998, and a portion of the choline requirement can be met via endogenous de novo synthesis of phosphatidylcholine catalyzed by phosphatidylethanolamine N-methyltransferase (PEMT) in the liver. Though many foods contain choline, many humans do not get enough in their diets. When deprived of dietary choline, most adult men and postmenopausal women developed signs of organ dysfunction (fatty liver, liver or muscle cell damage, and reduces the capacity to handle a methionine load, resulting in elevated homocysteine). However, only a portion of premenopausal women developed such problems. The difference in requirement occurs because estrogen induces expression of the PEMT gene and allows premenopausal women to make more of their needed choline endogenously. In addition, there is significant variation in the dietary requirement for choline that can be explained by common polymorphisms in genes of choline and folate metabolism. Choline is critical during fetal development, when it alters DNA methylation and thereby influences neural precursor cell proliferation and apoptosis. This results in long term alterations in brain structure and function, specifically memory function.

SUBMITTER: Zeisel SH

PROVIDER: S-EPMC2430110 | biostudies-literature | 2007 Jun

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Gene response elements, genetic polymorphisms and epigenetics influence the human dietary requirement for choline.

Zeisel Steven H SH

IUBMB life 20070601 6

Recent progress in the understanding of the human dietary requirement for choline highlights the importance of genetic variation and epigenetics in human nutrient requirements. Choline is a major dietary source of methyl-groups (one of choline's metabolites, betaine, participates in the methylation of homocysteine to form methionine); also choline is needed for the biosynthesis of cell membranes, bioactive phospholipids and the neurotransmitter acetylcholine. A recommended dietary intake for cho ...[more]

PMID: 17613168

Similar Datasets

Project description:Abstract Objectives Adequate intake of dietary choline, an essential nutrient, is pivotal for an optimal pregnant outcome and fetal programming, which may be affected by choline-metabolising genetic polymorphisms. This case-control study aims to investigate the interaction between choline intake during pregnancy and genetic polymorphisms in choline dehydrogenase (CHDH) and betaine-homocysteine methyltransferase (BHMT) on preterm birth risk among Chinese women. Methods 129 women with preterm delivery and 141 parturients with full-term delivery were recruited respectively at Xinhua Hospital, Shanghai between March 2016 and July 2018. Dietary choline intake during pregnancy was assessed by a validated food frequency questionnaire, genotyping was conducted for CHDH (G233C, rs12676) and BHMT (G742A, rs3733890), and plasma homocysteine (Hcy) levels were assayed. X2 test, Kruskal-Wallis H test, and unconditional logistic regression were conducted for statistical analysis. Results Neither choline intake during pregnancy nor CHDH rs12676 or BHMT rs3733890 alone was significantly correlated with the incidence of preterm birth after adjustment for total energy intake, folate consumption, delivery age, occupation, prepregnancy BMI, parity, hypertensive disorders of pregnancy, and gestational diabetes. However, significant interactions were observed between maternal choline intake during pregnancy and CHDH rs12676 (Pinteraction = 0.023) or BHMT rs373389 (Pinteraction = 0.045) on preterm delivery risk after adjusting for multiple confounding variables. Plasma Hcy level was about 38% higher in the case women carrying CC genotype of CHDH rs12676 who consumed less choline than the median during pregnancy, compared to the control women with GG genotype who had more choline intake than the median level (P<0.001). Similarly, the case women carrying AA genotype of BHMT rs373389 who consumed less choline than the median showed about 21% higher Hcy levels, compared with the control women with GG genotype who had more choline intake than the median level (P<0.001). Conclusions Our results indicate that genetic polymorphism of CHDH rs12676 or BHMT rs3733890 may interact with maternal choline intake, which may modify preterm birth risk among Chinese women partially through the disturbance in choline metabolism. This study was registered at clinic trails (No. NCT02841813). Funding Sources This study was supported by the Danone Nutrition Research and Education Grant (DIC2017-09).

Dataset Information

Gene response elements, genetic polymorphisms and epigenetics influence the human dietary requirement for choline.

Publications

Gene response elements, genetic polymorphisms and epigenetics influence the human dietary requirement for choline.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets