2014 Fiscal Year Final Research Report
Effect of adolescent tobacco use on cognitive function at adulthood: an animal model study
| Project/Area Number |
24530914
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | Hamamatsu University School of Medicine |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SUENAGA Toshiko 東京福祉大学, 心理学部, 講師 (80431667)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 思春期 / マウス / ニコチン / 認知機能 / 注意機能 / 衝動性 |
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| Outline of Final Research Achievements |
We investigated whether exposure to nicotine during adolescence in mice affects their cognitive abilities at adulthood. Mice were tested for place learning task and simple reaction time task. Nicotine-treated mice acquired place learning task as well as control mice did. However, they showed a deficit in reversal learning. In a simple reaction time task, nicotine-treated mice revealed diminished performance of attention, without impulsive action. We also found decreases of the dendrite length and the dendrite complexity in the medial prefrontal cortex and of nicotine-treated mice during adolescence. Our results suggest that adolescent nicotine exposure can induce long-lasting morphological changes in the brain and persistent cognitive deficits in mice.
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| Free Research Field |
社会科学
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