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Dietary cysteine reduces the methionine requirement in men
amino acid requirement stable isotopes methionine
2016/6/14
Despite early evidence suggesting that dietary cysteine
has a sparing effect on methionine requirements, some recent
reports question the existence of a measurable sparing capacity.
ESTIMATION OF METHIONINE AND LYSINE IN PROTEIN BY THIN-LAYER CHROMATOGRAPHY
Methionine Lysine Thin-layer chromatography
2009/12/30
A thin-layer chromatography method has been developed and evaluated for the separation and determination of lysine and methonine in a mixture of amino acids obtained from acid or enzyme hydrolysis of ...
Fasting and Post-Methionine Load Plasma Homocysteine Levels in Patients With Angiographically Defined Coronary Artery Disease
Homocysteine methionine coronary artery disease
2009/6/24
Elevated plasma homocysteine concentration either in fasting state or after methionine loading is an independent risk factor for vascular disease. The aim of this study was to evaluate the relationsh...
The changing profiles of L-ornithine decarboxylase and S-adenosyl-L-methionine decarboxylase activities in testicular cell types during sexual maturation of male rats
L-ornithine decarboxylase S-adenosyl-L-methionine testicular cell types
2009/2/23
To understand the involvement of polyamines in testicular maturation and spermatogenesis, the activity of two enzymes involved in the polyamine synthetic pathway, L-ornithine decarboxylase (ODC) a...
S-adenosyl-L-methionine decarboxylase activity in the rat epididymis：ontogeny and androgenic control
S-adenosyl-L-methionine androgen flutamide
2009/2/7
The authors describe the occurrence of high levels of S-adenosyl-L-methionine decarboxylase (SAMDC) activity in the rat epididymis, and its ontogeny and androgenic control. As early as 15 days of ag...
Differential effects of FSH on the activities of S-adenosyl-L-methionine decarboxylase and ornithine decarboxylase in Rat sertoli cells
Sertoli cells ODC AdoMetDC FSH
2009/2/6
Follicle stimulating hormone (FSH) modulates testicular function via Sertoli cells. The effect of FSH on S-adenosyl-L-methionine decarboxylase (AdoMetDC) activity was investigated in cultured Sert...
Choline-related supplements improve abnormal plasma methionine-homocysteine metabolites and glutathione status in children with cystic fibrosis
Choline betaine phospholipids ratio of glutathione to glutathione disulfide GSH:GSSG cystic fibrosis
2008/12/12
Background: Liver triacylglycerol accumulation and oxidative stress are common in cystic fibrosis (CF) and also occur in choline deficiency. Previously, we showed an association between elevated plasm...
Study of Methionine, Vitamin B12, and Folic Acid Status in Coronary Atherosclerotic Male Patients
Atherosclerosis Coronary heart disease Folic acid Vitamin B12 Methionine
2010/4/20
Background: Increased level of serum homocysteine is one of the risk factor of atherosclerosis. Its production related in some sulfur amino acids such as methionine. Some important cofactors that are ...
Daily methionine requirements of healthy Indian men, measured by a 24-h indicator amino acid oxidation and balance technique
Well-nourished Indian adults 24-h indicator amino acid balance requirement for sulfur-containing amino acids
2016/12/30
The 1985 FAO/WHO/UNU upper requirement for the sulfur-containing amino acids in healthy adults, which was set at 13 mg ?kg−1 ?d−1, is based on nitrogen balance studies in Western subjects....
The detailed study by Bosy-Westphal et al (1) in this issue of the Journal echoes and significantly extends observations that have been made in numerous laboratories during the past half century. Howe...
Effect of protein and methionine intakes on plasma homocysteine concentrations:a 6-mo randomized controlled trial in overweight subjects
Protein methionine homocysteine diet obesity cardiovascular disease
2016/12/20
Background: A high plasma homocysteine concentration is an independent risk factor for cardiovascular disease. Homocysteine concentrations are thought to be raised by high protein and methionine ...
Sex-related differences in methionine metabolism and plasma homocysteine concentrations
Homocysteine sex amino acids kinetics, sulfur amino acids methionine,
2016/6/7
Background: Elevated fasting homocysteine concentrations are
considered a risk factor for vascular disease. Homocysteine, which
is produced by the transmethylation of methionine, can be either
reme...
Cysteine kinetics and oxidation at different intakes of methionine and cystine in young adults
Cysteine oxidation cysteine kinetics sulfur amino acid metabolism obligatory oxidative losses obligatory nitrogen losses young adults methionine cystine
2016/6/3
Background: We previously studied methionine kinetics and
oxidation with the tracer L-[1-13C, methyl-2
H3]methionine.
Objectives: We sought to explore methionine-cysteine interrelations
in adults ...