title: The effect of beta-(Tyr9)melanotropin-(9-18) on active avoidance behavior, electroconvulsive shock-induced amnesia and T-discrimination learning of rats.
abstract: The effect of beta-(Tyr9)melanotropin-(9-18) was investigated on active avoidance behavior, electroconvulsive shock (ECS)-induced amnesia and T-discrimination learning in rats. The decapeptide inhibited the extinction of active avoidance behavior. It was also able to block ECS-induced amnesia if the treatment was performed immediately, or 4 hr or 20 hr after the ECS. In the T-discrimination paradigm the peptide facilitated spatial discrimination learning and reversal learning. These results suggest that beta-(Tyr9)melanotropin-(9-18) can influence learning and memory processes in different behavioral tests.
mesh_terms: D000647:Amnesia / Q000503:physiopathology*; D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects*; D004193:Discrimination Learning / Q000187:drug effects*; D004597:Electroshock; D008297:Male; D009074:Melanocyte-Stimulating Hormones / Q000494:pharmacology*; D010446:Peptide Fragments / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains; D013997:Time Factors
chemical_list: D010446:Peptide Fragments; C033533:MSH, beta, (9-18), Tyr(9)-; D009074:Melanocyte-Stimulating Hormones