This study explored the roles of methionine and choline in regulating the metabolic effects of a ketogenic diet in mice. It found that methionine supplementation helped restore weight and normalized liver fatty acid gene expression, while choline was more effective at reducing liver fat accumulation. The findings suggest that both
This review article discusses the roles of sulfur-containing amino acids—methionine, cysteine, homocysteine, and taurine—in human biochemistry. Methionine, an essential amino acid, is involved in methylation reactions and protein synthesis, while cysteine plays a crucial role in protein structure and is the precursor for glutathione and taurine. The metabolism of homocysteine,
This observational study investigated the pharmacokinetics of glutathione (GSH) and its metabolites—cysteine (Cys), cystine (Cys2), and methionine (Met)—in healthy individuals to determine optimal dosing for reducing reactive oxygen species (ROS), especially in cases like paraquat poisoning. It found that Cys and Met effectively suppressed ROS production in a dose-dependent manner,
