title: Tryptophan-niacin interrelationships during acute fasting and caloric restriction in humans.
mesh_terms: D000293:Adolescent; D000328:Adult; D003404:Creatinine / Q000652:urine; D004040:Dietary Carbohydrates; D004044:Dietary Proteins; D005215:Fasting; D006801:Humans; D008297:Male; D008875:Middle Aged; D009536:Niacinamide / Q000652:urine; D009539:Nicotinic Acids / Q000096:biosynthesis / Q000378:metabolism* / Q000652:urine; D009584:Nitrogen / Q000378:metabolism; D009748:Nutrition Disorders / Q000378:metabolism*; D009751:Nutritional Requirements; D011502:Protein-Energy Malnutrition / Q000378:metabolism; D011506:Proteins / Q000378:metabolism; D013997:Time Factors; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D004040:Dietary Carbohydrates; D004044:Dietary Proteins; D009539:Nicotinic Acids; D011506:Proteins; D009536:Niacinamide; D014364:Tryptophan; D003404:Creatinine; D009584:Nitrogen