title: Effects of BN-50730 (PAF receptor antagonist) and physostigmine (AChE inhibitor) on learning and memory in mice.
abstract: The present study was designed to investigate the effect of BN-50730, a PAF receptor antagonist, on learning and memory in mice using elevated plus-maze and to delineate the role of acetylcholine in modulating the effect of PAF receptor antagonist on learning and memory. BN-50730 administered immediately after plus-maze training on day 1 induced retrograde amnesia as indicated by a dose-dependent increase in transfer latency (TL) measured on day 2 whereas no such increase in TL was noted when BN-50730 (2.5 mg/kg, i.p.) was administered prior to plus-maze training. Physostigmine (0.5 mg/kg; 1.0 mg/kg, i.p.) administered 30 min prior to plus-maze training attenuated BN-50730-induced increase in TL measured on day 2. These results suggest that BN-50730, a PAF receptor antagonist, produced retrograde amnesia and physostigmine attenuated BN-50730-induced amnesia possibly through increased concentration of cerebral acetylcholine and a consequent increase in PAF release.
authors.affiliation: Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala, India.
authors.forename: N
authors.initials: N
authors.lastname: Singh
authors.forename: A
authors.initials: A
authors.lastname: Sharma
authors.forename: M
authors.initials: M
authors.lastname: Singh
mesh_terms: D000109:Acetylcholine / Q000378:metabolism; D000648:Amnesia, Retrograde / Q000139:chemically induced / Q000517:prevention & control; D000818:Animals; D001381:Azepines / Q000008:administration & dosage / Q000633:toxicity*; D002800:Cholinesterase Inhibitors / Q000008:administration & dosage / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004347:Drug Interactions; D005260:Female; D008297:Male; D018782:Maze Learning / Q000187:drug effects*; D008568:Memory / Q000187:drug effects*; D051379:Mice; D010830:Physostigmine / Q000008:administration & dosage / Q000494:pharmacology*; D010975:Platelet Aggregation Inhibitors / Q000008:administration & dosage / Q000633:toxicity*; D058924:Thienopyridines; D014230:Triazoles / Q000008:administration & dosage / Q000633:toxicity*
chemical_list: D001381:Azepines; D002800:Cholinesterase Inhibitors; D010975:Platelet Aggregation Inhibitors; D058924:Thienopyridines; D014230:Triazoles; C066686:BN 50730; D010830:Physostigmine; D000109:Acetylcholine