title: On betaH-Leu5-endorphin and schizophrenia.
abstract: A previously unknown peptide, betaH-Leu5-endorphin, has been reported in the dialysates of schizophrenic patients. Accordingly, hemofiltrates from two schizophrenic and two control patients were examined for the presence of betaH-Leu5-endorphin. The opioid peptides were detected by a radioreceptor assay after separation and identification by gel filtration and high-performance liquid chromatography. With a detection limit of 30 pmole/L of hemofiltrate, no betaH-Leu5-endorphin or Met5-endorphin was found in controls or in patients. Whatever the possible involvement of endorphins in schizophrenic behavior, they are not present at detectable levels in the hemofiltrates of two well-characterized schizophrenic patients, thereby casting doubt on a general relationship of Leu-endorphin and schizophrenia.
mesh_terms: D000328:Adult; D004723:Endorphins / Q000097:blood*; D006801:Humans; D008297:Male; D011957:Receptors, Opioid / Q000032:analysis; D006435:Renal Dialysis; D012559:Schizophrenia / Q000097:blood* / Q000628:therapy
chemical_list: D004723:Endorphins; D011957:Receptors, Opioid