title: Effect of combined administration of tryptophan with putative tryptophan pyrrolase inhibitors, DL-3-pyridylalanine, allopurinol or nicotinamide, on brain serotonin concentration.
mesh_terms: D000409:Alanine / Q000031:analogs & derivatives* / Q000494:pharmacology; D000493:Allopurinol / Q000494:pharmacology*; D000818:Animals; D001923:Brain Chemistry / Q000187:drug effects*; D008099:Liver / Q000378:metabolism; D008297:Male; D009536:Niacinamide / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D012701:Serotonin / Q000378:metabolism*; D014364:Tryptophan / Q000494:pharmacology*; D014366:Tryptophan Oxygenase / Q000037:antagonists & inhibitors
chemical_list: D009536:Niacinamide; D012701:Serotonin; D000493:Allopurinol; C012787:3-pyridylalanine; D014364:Tryptophan; D014366:Tryptophan Oxygenase; D000409:Alanine