title: V1a receptor knockout mice exhibit impairment of spatial memory in an eight-arm radial maze.
abstract: In this study, we examined the performance of vasopressin V1a receptor (V1aR) and vasopressin V1b receptor (V1bR) knockout (KO) mice compared to wild-type (WT) mice in an eight-arm radial maze. V1aR KO mice exhibited an impairment of spatial memory in comparison to WT mice. By contrast, we did not observe any significant differences between the V1bR KO mice and the WT mice in the eight-arm radial maze. Moreover, OPC-21268, a selective V1aR antagonist, impaired spatial memory in the eight-arm radial maze in WT mice characterized by an increased number of errors. These results suggest that the V1aR controls spatial memory in mice.
authors.affiliation: Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1, Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Egashira
authors.forename: Akito
authors.initials: A
authors.lastname: Tanoue
authors.forename: Fuminori
authors.initials: F
authors.lastname: Higashihara
authors.forename: Kenichi
authors.initials: K
authors.lastname: Mishima
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Fukue
authors.forename: Yukio
authors.initials: Y
authors.lastname: Takano
authors.forename: Gozoh
authors.initials: G
authors.lastname: Tsujimoto
authors.forename: Katsunori
authors.initials: K
authors.lastname: Iwasaki
authors.forename: Michihiro
authors.initials: M
authors.lastname: Fujiwara
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D065092:Antidiuretic Hormone Receptor Antagonists; D002755:Choice Behavior / Q000502:physiology; D004305:Dose-Response Relationship, Drug; D008297:Male; D018782:Maze Learning / Q000187:drug effects / Q000502:physiology*; D008569:Memory Disorders / Q000235:genetics*; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout / Q000502:physiology; D010880:Piperidines / Q000494:pharmacology; D015363:Quinolones / Q000494:pharmacology; D017483:Receptors, Vasopressin / Q000172:deficiency* / Q000235:genetics / Q000378:metabolism; D013037:Spatial Behavior / Q000187:drug effects / Q000502:physiology*
chemical_list: D065092:Antidiuretic Hormone Receptor Antagonists; D010880:Piperidines; D015363:Quinolones; D017483:Receptors, Vasopressin; C068644:OPC 21268