Possible Interaction: Cysteine and Taurine

“The data suggest that taurine enhanced LDL receptor activity by sparing cysteine , a known sulfhydryl group donor and stimulator of 7 alpha-hydroxylase activity, and that the latter stimulated bile acid production leading to increased utilization of cellular free cholesterol and enhanced LDL uptake.”

“ Cysteine HCl addition to solutions formulated with a pediatric amino acid product will increase plasma taurine concentrations to within the normal reference range.”

“When additional cysteine was added to the solution of 11 subjects, taurine also correlated with nitrogen balance.”

“We present novel data that a high taurine dose increases the cysteine content of both mdx liver and plasma, a possible result of down regulation of the taurine synthesis pathway in the liver (which functions to dispose of excess cysteine, which is toxic).”

“N‐Acetyl‐l‐cysteine (AC), alanine, β‐alanine, cysteine sulphinic acid (CSA), γ‐aminobutyric acid (GABA),d‐phenylalanine, phenylalanine, serine and taurine inhibited MeHg– cysteine uptake at 5°C.”

“The results showed that when the dietary intake of taurine was inadequate to maintain the plasma concentration above 40 mumol/L, the addition of L-cysteic acid to the diet gave rise to an increase in plasma taurine concentration in some cats.”

“ Cysteine infused in place of taurine had a similar influence but was less effective than taurine.”

“The administration of L-cysteine also caused an increase the serum concentration of taurine , while methionine was not influenced.”

“Taurocholic acid and taurine decrease the rate of cysteine to taurine conversion and also partially alleviate the dystrophy.”