title: The effect of theophylline on tryptophan pyrrolase in the hypophysectomized rat and some observations on the validity of tryptophan pyrrolase assays.
mesh_terms: D000818:Animals; D002110:Caffeine / Q000494:pharmacology; D002245:Carbon Dioxide / Q000378:metabolism; D002250:Carbon Radioisotopes; D002854:Chromatography, Paper; D003513:Cycloheximide / Q000494:pharmacology; D003609:Dactinomycin / Q000494:pharmacology; D004789:Enzyme Activation; D006854:Hydrocortisone / Q000494:pharmacology; D007016:Hypophysectomy; D007700:Kinetics; D008099:Liver / Q000187:drug effects / Q000201:enzymology*; D008297:Male; D008956:Models, Chemical; D010477:Perfusion; D010902:Pituitary Gland / Q000502:physiology; D051381:Rats; D013806:Theophylline / Q000494:pharmacology*; D014364:Tryptophan / Q000378:metabolism; D014366:Tryptophan Oxygenase / Q000037:antagonists & inhibitors / Q000378:metabolism*
chemical_list: D002250:Carbon Radioisotopes; D002245:Carbon Dioxide; D003609:Dactinomycin; D002110:Caffeine; D014364:Tryptophan; D003513:Cycloheximide; D013806:Theophylline; D014366:Tryptophan Oxygenase; D006854:Hydrocortisone