pour tous ceux qui ont peur de la triméthylamine suite à l'usage de carnitine par exemple:
https://www.nutrimuscle.com/produits/CA ... sclerose-1
Plasma trimethylamine-N-oxide following supplementation with vitamin D or D plus B-vitamins
Rima Obeid
We compared the effect of supplementation with vitamin D+B or vitamin D on plasma trimethylamine N-oxide (TMAO) and choline metabolites.
Methods and results
This is a randomized single-blinded non-placebo controlled study. 27 participants received 1200 IE vitamin D3 and 800 mg calcium and 25 received additionally 0.5 mg folic acid, 50 mg B6, and 0.5 mg B12 for 1 year. Plasma Hcy, TMAO, and choline metabolites were measured at baseline and 12 months later.
TMAO declined in the vitamin D arm by 0.5 vs. 2.8 μmol/L in the D+B arm (P = 0.005). Hcy decreased and betaine increased in the D+B compared with the D arm. Within-subject levels of plasma choline and dimethylglycine and urine betaine increased in both arms and changes did not differ between the arms. TMAO reduction was predicted by higher baseline TMAO and lowering Hcy in stepwise regression analysis. The test-retest variations of TMAO were greater in the D+B arm compared with vitamin D arm.
Conclusion: B-vitamins plus vitamin D lowered plasma fasting TMAO compared with vitamin D. Vitamin D caused alterations in choline metabolism which may reflect the metabolic flexibility of C1-metabolism. The molecular mechanisms and health implications of these changes are currently unknown.