Some aspects of tryptophan metabolism in human subjects. I. Nitrogen balances, blood pyridine nucleotides and urinary excretion of N1-methylnicotinamide and N1-methyl-2-pyridone-5-carboxamide on a low-niacin diet.
D004032:Diet; D006801:Humans; D009525:Niacin / Q000172:deficiency*; D009536:Niacinamide / Q000031:analogs & derivatives; D009584:Nitrogen / Q000378:metabolism*; D009705:Nucleosides / Q000097:blood*; D009711:Nucleotides / Q000097:blood*; D011728:Pyridones; D014364:Tryptophan / Q000172:deficiency*; D014815:Vitamins
D009705:Nucleosides; D009711:Nucleotides; D011728:Pyridones; D014815:Vitamins; D009536:Niacinamide; D009525:Niacin; C017679:2-hydroxypyridine; D014364:Tryptophan; D009584:Nitrogen; C024058:N(1)-methylnicotinamide
NICOTINIC ACID/deficiency; NITROGEN/metabolism; NUCLEOSIDES AND NUCLEOTIDES/in blood; TRYPTOPHAN/deficiency