Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats

We have previously demonstrated that riluzole has anxiolytic-like effects in rats, without affecting spontaneous alternation performance in the Y-maze test. However, the effects of riluzole on hippocampal synaptic plasticity were still unclear. In this study, we showed that bath application of riluz...

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Main Authors: Sachie Sasaki-Hamada, Hiroaki Sacai, Azusa Sugiyama, Takahiro Iijima, Akiyoshi Saitoh, Masatoshi Inagaki, Mitsuhiko Yamada, Jun-Ichiro Oka
Format: Article
Language:English
Published: Elsevier 2013-01-01
Series:Journal of Pharmacological Sciences
Online Access:http://www.sciencedirect.com/science/article/pii/S1347861319303159
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author Sachie Sasaki-Hamada
Hiroaki Sacai
Azusa Sugiyama
Takahiro Iijima
Akiyoshi Saitoh
Masatoshi Inagaki
Mitsuhiko Yamada
Jun-Ichiro Oka
author_facet Sachie Sasaki-Hamada
Hiroaki Sacai
Azusa Sugiyama
Takahiro Iijima
Akiyoshi Saitoh
Masatoshi Inagaki
Mitsuhiko Yamada
Jun-Ichiro Oka
author_sort Sachie Sasaki-Hamada
collection DOAJ
description We have previously demonstrated that riluzole has anxiolytic-like effects in rats, without affecting spontaneous alternation performance in the Y-maze test. However, the effects of riluzole on hippocampal synaptic plasticity were still unclear. In this study, we showed that bath application of riluzole did not impair long-term potentiation and long-term depression, whereas a benzodiazepine anxiolytic, diazepam, significantly impaired them. Furthermore, the acquisition of spatial memory in the Morris water maze test was impaired in diazepam-treated but not riluzole-treated rats. We thus provide further evidence for the potential usefulness of riluzole as an anxiolytic that does not cause amnesia. Keywords:: mood and anxiety disorder, amnesia, riluzole
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spelling doaj.art-208703f545a54db8a168d1261b8938132022-12-21T22:54:56ZengElsevierJournal of Pharmacological Sciences1347-86132013-01-011223232236Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in RatsSachie Sasaki-Hamada0Hiroaki Sacai1Azusa Sugiyama2Takahiro Iijima3Akiyoshi Saitoh4Masatoshi Inagaki5Mitsuhiko Yamada6Jun-Ichiro Oka7Laboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, JapanLaboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, JapanLaboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; Department of Neuropsychopharmacology, National Institute of Mental Health National Center of Neurology and Psychiatry, Tokyo 187-8553, JapanLaboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, JapanDepartment of Neuropsychopharmacology, National Institute of Mental Health National Center of Neurology and Psychiatry, Tokyo 187-8553, JapanDepartment of Neuropsychopharmacology, National Institute of Mental Health National Center of Neurology and Psychiatry, Tokyo 187-8553, JapanDepartment of Neuropsychopharmacology, National Institute of Mental Health National Center of Neurology and Psychiatry, Tokyo 187-8553, JapanLaboratory of Pharmacology, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; Corresponding author. okaji@rs.noda.tus.ac.jpWe have previously demonstrated that riluzole has anxiolytic-like effects in rats, without affecting spontaneous alternation performance in the Y-maze test. However, the effects of riluzole on hippocampal synaptic plasticity were still unclear. In this study, we showed that bath application of riluzole did not impair long-term potentiation and long-term depression, whereas a benzodiazepine anxiolytic, diazepam, significantly impaired them. Furthermore, the acquisition of spatial memory in the Morris water maze test was impaired in diazepam-treated but not riluzole-treated rats. We thus provide further evidence for the potential usefulness of riluzole as an anxiolytic that does not cause amnesia. Keywords:: mood and anxiety disorder, amnesia, riluzolehttp://www.sciencedirect.com/science/article/pii/S1347861319303159
spellingShingle Sachie Sasaki-Hamada
Hiroaki Sacai
Azusa Sugiyama
Takahiro Iijima
Akiyoshi Saitoh
Masatoshi Inagaki
Mitsuhiko Yamada
Jun-Ichiro Oka
Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats
Journal of Pharmacological Sciences
title Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats
title_full Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats
title_fullStr Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats
title_full_unstemmed Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats
title_short Riluzole Does Not Affect Hippocampal Synaptic Plasticity and Spatial Memory, Which Are Impaired by Diazepam in Rats
title_sort riluzole does not affect hippocampal synaptic plasticity and spatial memory which are impaired by diazepam in rats
url http://www.sciencedirect.com/science/article/pii/S1347861319303159
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