Research Project
Grant-in-Aid for Young Scientists (B)
We have developed a new animal model of depression by modifying the Morris water maze learning situation in mice. It is generally believed that mice placed in a pool filled with opaque water will learn to escape onto a platform hidden below the water surface. However, if the difficulty of the task is increased, some of the mice gradually cease to swim and become immobile ; this response indicates a depressive state. In this research, the validity of our experimental method as a depression model was verified by demonstrating the phenotypic differences between "nonhelpless" mice(designated"Winner") and "helpless"mice(designated"Loser"). Compared with nonhelpless mice, helpless mice showed lower spontaneous locomotor activity in their home cage. In addition, helpless mice exhibited impaired neurogenesis in the hippocampus and increased serum levels of proinflammatory cytokines, such as IL-1α, IL-1β and TNF-α.
All 2012 2011 2010
All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (13 results) Book (3 results) Patent(Industrial Property Rights) (2 results)
Genes and Environment
Volume: 33 Pages: 81-88
10029337315
https://www.jstage.jst.go.jp/browse/jemsge/33/3/_contents/-char/ja/
Journal of Neuroscience Research
Volume: 88 Issue: 11 Pages: 2385-2397
10.1002/jnr.22410
実験動物技術
Volume: 45 Pages: 3-8
10026883094
行動科学
Volume: 48(2) Pages: 1-9
Experimental Animals
Volume: 59 Pages: 191-197
130000254346
https://www.jstage.jst.go.jp/browse/expanim/59/2/_contents