Opioid system hypofunction has been postulated in cluster headache (CH) on the basis of reduced opioid levels found in the cerebrospinal fluid (CSF). In this study beta-endorphin levels were monitored in the peripheral blood mononuclear cells of 65…
beta-Endorphin (beta-EP) and cholecystokinin 8 (CCK-8) concentrations in peripheral blood mononuclear cells were measured in 12 drug-free autistic (AU) children, in 10 drug-free children with pervasive developmental disorders (PDD) and in 11 healthy…