SEPARATION OF OPIOID PEPTIDES UTILIZING HIGH PERFORMANCE LIQUID CHROMATOGRAPHY

Abstract
Chromatographic procedures were developed for resolving all of the known enkephalins and endorphins on a single column. The effect of eluant pH on the retention times and separation of the enkephalins and .beta.-endorphin was determined. By combining these separations with a sensitive radioreceptor assay it is possible to assay all of the opioid peptides in the pituitary gland or in various regions of the brain from individual small laboratory animals.