title: Analysis of behavioural responses to an ACTH analog in CXB/By recombinant inbred mice.
abstract: Male mice of the C57BL/6By and BALB/cBy inbred strains, their reciprocal F1 hybrids, and 7 recombinant inbred strains, were tested for open-field activity, a shock-motivated successive reversal position discrimination problem in a T-maze, and a toggle box exploration task. The test battery was repeated one month later. Finally, mice were tested for the acquisition and extinction of a taste aversion conditioned by ethanol injection. Mice of each strain were tested after injection with saline or one of 3 doses of an ACTH analogue. Highly significant genotypic differences were found for all measures, an expected result. The strain distribution pattern seen in the toggle box suggested single gene mediation of exploratory activity after habituation. One aspect of avoidance responding and extinction of conditioned taste aversion also yielded strain distribution pattern consistent with single gene control. Peptide treatment reduced internal field crossings in the open field. This effect was not strain dependent. Peptide treatment had no effect on T-maze learning, conditioned taste aversion, or toggle-box exploration.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000031:analogs & derivatives* / Q000494:pharmacology; D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects; D001522:Behavior, Animal / Q000187:drug effects*; D003433:Crosses, Genetic; D004193:Discrimination Learning / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D005106:Exploratory Behavior / Q000187:drug effects; D005108:Extinction, Psychological / Q000187:drug effects; D006120:Grooming / Q000187:drug effects; D006824:Hybridization, Genetic; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D009043:Motor Activity / Q000187:drug effects; D009949:Orientation / Q000187:drug effects; D010446:Peptide Fragments / Q000494:pharmacology*; D011995:Recombination, Genetic; D013649:Taste / Q000187:drug effects
chemical_list: D010446:Peptide Fragments; C013765:Org 2766; D000324:Adrenocorticotropic Hormone