Demonstration of a specific dynorphin receptor in guinea pig ileum myenteric plexus.

Animals Binding, Competitive Dynorphins Endorphins/metabolism Enkephalin, Leucine Enkephalins/metabolism,pharmacology Guinea Pigs Ileum/drug effects,innervation Kinetics Muscle Contraction/drug effects Myenteric Plexus/metabolism Naltrexone/analogs & derivatives,pharmacology Narcotic Antagonists/pharmacology Narcotics/metabolism Nitrogen Mustard Compounds/pharmacology Peptide Fragments/metabolism Receptors, Opioid/metabolism

Endorphins Enkephalins Narcotic Antagonists Narcotics Nitrogen Mustard Compounds Peptide Fragments Receptors, Opioid dynorphin receptor Enkephalin, Leucine Naltrexone chlornaltrexamine dynorphin (1-13) Dynorphins