title: Hyperactivity and disruption of prepulse inhibition induced by NMDA infusion of the rat ventral hippocampus: Comparison of uni- and bilateral stimulation.
abstract: Numerous studies have demonstrated that NMDA stimulation of the rat ventral hippocampus induces hyperactivity and disruption of prepulse inhibition (PPI) and some reports have provided insights into the different neural substrates of these two effects. Bilateral or unilateral NMDA stimulation have been applied in these studies, but have never been compared directly. Thus, results of these studies can be related to each other only with reservations. Therefore - given the substantial interest in the behavioral effects of hippocampal overactivity and the neural substrates underlying PPI with respect to schizophrenia - the present experiments compared hyperactivity and PPI disruption following uni- or bilateral NMDA stimulation of the ventral hippocampus. Both bilateral and unilateral infusion of NMDA (0.5μg/0.5μl/side) induced hyperactivity in the open field and disrupted PPI. The major difference noted between unilateral and bilateral infusions was that the effects of bilateral infusions were stronger than those of the unilateral infusions.
authors.affiliation: School of Medicine, JiangSu University, Zhenjiang Mental Health Center, Zhenjiang, 212013 Jiangsu Province, PR China.
authors.forename: Jia
authors.initials: J
authors.lastname: Wang
authors.affiliation: School of Medicine, JiangSu University, Zhenjiang Mental Health Center, Zhenjiang, 212013 Jiangsu Province, PR China.
authors.forename: Guohai
authors.initials: G
authors.lastname: Li
authors.affiliation: School of Medicine, JiangSu University, Zhenjiang Mental Health Center, Zhenjiang, 212013 Jiangsu Province, PR China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Xu
authors.affiliation: School of Medicine, JiangSu University, Zhenjiang Mental Health Center, Zhenjiang, 212013 Jiangsu Province, PR China. Electronic address: wnzhang@ujs.edu.cn.
authors.forename: Wei-Ning
authors.initials: WN
authors.lastname: Zhang
mesh_terms: D000818:Animals; D057967:Infusions, Intraventricular; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D016202:N-Methylaspartate / Q000494:pharmacology*; D065808:Prepulse Inhibition / Q000187:drug effects*; D017208:Rats, Wistar
chemical_list: D016202:N-Methylaspartate
keywords: Locomotor activity; NMDA infusion; Prepulse inhibition; Schizophrenia; Ventral hippocampus (VH)