title: The action of allopurinol as an inhibitor of liver tryptophan pyrrolase in depressions.
mesh_terms: D000328:Adult; D000368:Aged; D000493:Allopurinol / Q000494:pharmacology*; D000928:Antidepressive Agents / Q000627:therapeutic use; D003863:Depression / Q000188:drug therapy*; D005260:Female; D006801:Humans; D008099:Liver / Q000187:drug effects / Q000201:enzymology; D008297:Male; D008875:Middle Aged; D014366:Tryptophan Oxygenase / Q000037:antagonists & inhibitors*
chemical_list: D000928:Antidepressive Agents; D000493:Allopurinol; D014366:Tryptophan Oxygenase