The British Journal of Psychiatry 144: 651-653 (1984)
© 1984 The Royal College of Psychiatrists
No correlation between neuroleptic-induced increase of beta-endorphin serum level and therapeutic efficacy in schizophrenia
D Naber, N Nedopil and E Eben
In 23 acute, unmedicated, schizophrenic patients, psychotic behaviour and
beta-endorphin serum level were measured before and during four weeks of
neuroleptic therapy. Prior to drug treatment, beta-endorphin level of all
patients was within the normal range. Neuroleptic therapy induced marked
elevations of beta-endorphin in eight subjects; statistical analysis
revealed a slight but significant increase for the whole group. This
endocrine effect was not correlated with therapeutic efficacy of
neuroleptic treatment.