Plasma choline and betaine correlate with serum folate, plasma S-adenosyl-methionine and S-adenosyl-homocysteine in healthy volunteers
-
Apolline Imbard
, Yvo M. Smulders
, Rob Barto , Desiree E.C. Smith , Robert M. Kok , Cornelis Jakobs und Henk J. Blom
Abstract
Background: Choline is essential for mammalian cell function. It plays a critical role in cell membrane integrity, neurotransmission, cell signaling and lipid metabolism. Moreover, choline is involved in methylation in two ways: a) its synthesis requires methyl groups donated by S-adenosyl-methionine (AdoMet); and b) choline oxidation product betaine methylates homocysteine (Hcy) to methionine (Met) and produces dimethylglycine. This later donates one carbon units to tetrahydrofolate (THF).
Methods: To evaluate the correlations of choline and betaine with folate, AdoMet, S-anenosyl-homocysteine (AdoHcy), total homocysteine (tHcy), and DNA methylation, choline, betaine and dimethylglycine were measured by LC-MS/MS in plasma of 109 healthy volunteers, in whom folate, AdoMet, AdoHcy, tHcy, and DNA methylation have previously been reported.
Results: Using a bivariate model, choline and betaine showed strong positive correlations with folate (r=0.346 and r=0.226), AdoHcy (r=0.468 and r=0.296), and correlated negatively with AdoMet/AdoHcy ratio (r=–0.246 and r=–0.379). Only choline was positively correlated with AdoMet (r=0.453). Using a multivariate linear regression model, choline correlated strongly with folate (β=17.416), AdoMet (β=61.272), and AdoHcy (β=9.215). Betaine correlated positively with folate (β=0.133) and negatively with tHcy (β=–0.194) ratio. Choline is an integral part of folate and methylation pathways.
Conclusions: Our data highlight the importance of integrating choline in studies concerning addressing pathological conditions related to folate, homocysteine and methylation metabolism.
The authors would like to thank the volunteers from the hospital personnel for their participation in this study.
Conflict of interest statement
Authors’ conflict of interest disclosure: The authors stated that there are no conflicts of interest regarding the publication of this article.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
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©2013 by Walter de Gruyter Berlin Boston
Artikel in diesem Heft
- Masthead
- Masthead
- Editorial
- Special issue on advances and controversies in B vitamins and choline
- Reviews
- B-Vitamin dependent methionine metabolism and alcoholic liver disease
- Metabolic crosstalk between choline/1-carbon metabolism and energy homeostasis
- Proteomics of vitamin B12 processing
- Unexpected high plasma cobalamin/Proposal for a diagnostic strategy
- Clinical recognition and aspects of the cerebral folate deficiency syndromes
- Choline-containing phospholipids: relevance to brain functional pathways
- The ‘golden age’ of DNA methylation in neurodegenerative diseases
- Mechanisms of the beneficial effects of vitamin B6 and pyridoxal 5-phosphate on cardiac performance in ischemic heart disease
- The diagnostic utility of folate receptor autoantibodies in blood
- Red cell or serum folate: what to do in clinical practice?
- Formate: an essential metabolite, a biomarker, or more?
- The role of homocysteine in bone remodeling
- Mini Reviews
- Neuroprotective actions of perinatal choline nutrition
- Normal prions as a new target of cobalamin (vitamin B12) in rat central nervous system
- Molecular mechanisms underlying the potentially adverse effects of folate
- Betaine homocysteine methyltransferase (BHMT)-dependent remethylation pathway in human healthy and tumoral liver
- Hydrogen sulfide as an oxygen sensor
- Opinion Paper
- B vitamin therapy for homocysteine: renal function and vitamin B12 determine cardiovascular outcomes
- Research Articles
- One year B and D vitamins supplementation improves metabolic bone markers
- Effect of 1 year B and D vitamin supplementation on LINE-1 repetitive element methylation in older subjects
- Aqueous humor glycation marker and plasma homocysteine in macular degeneration
- Homocysteine plasma levels in patients treated with antiepileptic drugs depend on folate and vitamin B12 serum levels, but not on genetic variants of homocysteine metabolism
- Trends in clinical laboratory homocysteine testing from 1997 to 2010: the impact of evidence on clinical practice at a single institution
- Three family members with elevated plasma cobalamin, transcobalamin and soluble transcobalamin receptor (sCD320)
- Plasma choline and betaine correlate with serum folate, plasma S-adenosyl-methionine and S-adenosyl-homocysteine in healthy volunteers
- Plasma homocysteine and vitamin B12 serum levels, red blood cell folate concentrations, C677T methylenetetrahydrofolate reductase gene mutation and risk of recurrent miscarriage: a case-control study in Spain
Artikel in diesem Heft
- Masthead
- Masthead
- Editorial
- Special issue on advances and controversies in B vitamins and choline
- Reviews
- B-Vitamin dependent methionine metabolism and alcoholic liver disease
- Metabolic crosstalk between choline/1-carbon metabolism and energy homeostasis
- Proteomics of vitamin B12 processing
- Unexpected high plasma cobalamin/Proposal for a diagnostic strategy
- Clinical recognition and aspects of the cerebral folate deficiency syndromes
- Choline-containing phospholipids: relevance to brain functional pathways
- The ‘golden age’ of DNA methylation in neurodegenerative diseases
- Mechanisms of the beneficial effects of vitamin B6 and pyridoxal 5-phosphate on cardiac performance in ischemic heart disease
- The diagnostic utility of folate receptor autoantibodies in blood
- Red cell or serum folate: what to do in clinical practice?
- Formate: an essential metabolite, a biomarker, or more?
- The role of homocysteine in bone remodeling
- Mini Reviews
- Neuroprotective actions of perinatal choline nutrition
- Normal prions as a new target of cobalamin (vitamin B12) in rat central nervous system
- Molecular mechanisms underlying the potentially adverse effects of folate
- Betaine homocysteine methyltransferase (BHMT)-dependent remethylation pathway in human healthy and tumoral liver
- Hydrogen sulfide as an oxygen sensor
- Opinion Paper
- B vitamin therapy for homocysteine: renal function and vitamin B12 determine cardiovascular outcomes
- Research Articles
- One year B and D vitamins supplementation improves metabolic bone markers
- Effect of 1 year B and D vitamin supplementation on LINE-1 repetitive element methylation in older subjects
- Aqueous humor glycation marker and plasma homocysteine in macular degeneration
- Homocysteine plasma levels in patients treated with antiepileptic drugs depend on folate and vitamin B12 serum levels, but not on genetic variants of homocysteine metabolism
- Trends in clinical laboratory homocysteine testing from 1997 to 2010: the impact of evidence on clinical practice at a single institution
- Three family members with elevated plasma cobalamin, transcobalamin and soluble transcobalamin receptor (sCD320)
- Plasma choline and betaine correlate with serum folate, plasma S-adenosyl-methionine and S-adenosyl-homocysteine in healthy volunteers
- Plasma homocysteine and vitamin B12 serum levels, red blood cell folate concentrations, C677T methylenetetrahydrofolate reductase gene mutation and risk of recurrent miscarriage: a case-control study in Spain