title: Clinical studies on the role of endorphins in schizophrenia.
mesh_terms: D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D004723:Endorphins / Q000502:physiology* / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D009270:Naloxone / Q000627:therapeutic use; D011897:Random Allocation; D011957:Receptors, Opioid / Q000502:physiology; D012559:Schizophrenia / Q000188:drug therapy / Q000503:physiopathology*; D012565:Schizophrenic Psychology; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D011957:Receptors, Opioid; D009270:Naloxone; D001615:beta-Endorphin