2011 Fiscal Year Final Research Report
Elucidation of neural substances processing palatability of hardness of food
| Project/Area Number |
21791820
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Functional basic dentistry
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| Research Institution | Osaka Dental University |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Keywords | 摂食行動 / ヒスタミン神経系 / 食物の硬さ / 嗜好性 / 食物嫌悪学習 / マイクロダイアリシス / 免疫組織化学染色 |
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| Research Abstract |
The effects of hardness and palatability of food on neuronal activation were studied using rats. A number of Fos-immunoreactive cells and the enhancement of histamine release were found in the central nucleus of amygdala in hard pellets-fed rats, but not in soft pellets-fed rats. When rats acquired a conditioned aversion to soft pellets, Fos expression and histamine release were increased during feeding. In addition, the microinjection of H_1-antagonist to the bilateral central nucleus of amygdala impaired the aversive response to soft pellets. These observations indicate that the amygdalar histaminergic system is involved in the modulation of palatability related to hardness of food.
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Research Products
(6 results)
