title: Endorphins in human cerebrospinal fluid.
abstract: Opiate activity in CSF samples drawn from patients with suspected intracranial hydrodynamic dysfunction has been fractionated on Sephadex G-10 and separated by column electrophoresis in agarose suspension. From the Sephadex G-10 chromatography two receptor active fractions (FI and FII) were recovered. Both FI and FII were further resolved by the electrophoresis. FI separated into at least four components and FII into two components. The study also includes a comparison of the endorphin concentrations in CSF (samples drawn from healthy volunteers) measured by receptorassay with those detected by radioimmunoassay of beta-endorphin, [Met]enkephalin and dynorphin, respectively. The data obtained indicated negligible quantities of the radioimmunoassayable endorphins in the total CSF opiate activity.
mesh_terms: D004399:Dynorphins; D004723:Endorphins / Q000134:cerebrospinal fluid*; D004744:Enkephalin, Methionine / Q000134:cerebrospinal fluid; D006801:Humans; D011863:Radioimmunoassay; D011869:Radioligand Assay; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D004744:Enkephalin, Methionine; D001615:beta-Endorphin; D004399:Dynorphins