- 作者：Daisuke Miyazawa ; Yuko Yasui ; Kazuyo Yamada ; Naoki Ohara ; Harumi Okuyama
- 关键词：α ; -Linolenic acid (ALA) ; Docosahexaenoic acid (DHA) ; Brain-derived neurotrophic factor (BDNF) ; p38 mitogen-activated protein kinase (p38 MAPK)
- 刊名：Life Sciences
- 出版年：2010
- 出版时间：9 October 2010
- 年：2010
- 卷：87
- 期：15-16
- 页码：490-494
- 全文大小：307 K
AimsThe purpose of this study was to determine a relatively short-term effect of feeding an α-linolenic acid (ALA, n-3)-restricted, linoleic acid (LA, n-6)-adequate diet on neurotrophin contents and protein kinase activities in brain regions of the mouse.Main methods
After feeding mice a safflower oil (SAF) diet (ALA-restricted, LA-adequate) or perilla oil (PER) diet (containing adequate amounts of ALA and LA) for 4 weeks from weaning, the fatty acid compositions of brain regions were analyzed by capillary column gas–liquid chromatography, nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) contents were measured using enzyme-linked immunosorbent assay.
Key findings
The striatum and hippocampus, but not the cerebral cortex, from the SAF group, contained a smaller amount of docosahexaenoic acid (DHA, 22:6n-3) than those from the PER group. The NGF contents in these brain regions were not different between the two dietary groups. However, the striatal BDNF content of the SAF group was significantly lower than that of the PER group. Protein kinase A, protein kinase C, and p44/42 mitogen-activated protein kinase (p44/42 MAPK) activities in brain regions showed no significant difference between the two dietary groups. However, the striatal p38 MAPK activity was significantly lower in the SAF group than in the PER group. No such differences were observed in the hippocampus or the cerebral cortex.
Significance
A relatively short-term feeding of an α-linolenic acid-restricted, linoleic acid-adequate diet was found to lower the DHA content, BDNF content and p38 MAPK activity in the mouse striatum.