title: ACTH4--10 antagonism of morphine-induced behavioral activation in the mouse.
abstract: The 4--10 fragment of adrenocorticotrophic hormone (ACTH4--10; Met-Glu-His-Phe-Arg-Trp-Gly) was administered intracerebroventricularly to C57Bl mice with and without concurrent systemic injection of a standard dose of morphine sulfate. Morphine produced stereotyped behavioral activation (running, environmental oblivion, Straub tail) which was antagonized in a dose related fashion by the ACTH fragment. This extends the range of opiate--ACTH4--10 interactions to a novel species and behavioral model, and is consistent with previous findings.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000494:pharmacology*; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D004305:Dose-Response Relationship, Drug; D008297:Male; D051379:Mice; D009020:Morphine / Q000037:antagonists & inhibitors*; D009043:Motor Activity / Q000187:drug effects; D010446:Peptide Fragments / Q000494:pharmacology*
chemical_list: D010446:Peptide Fragments; D009020:Morphine; D000324:Adrenocorticotropic Hormone