Effect of high sucrose and soy protein and fatty acids on aggressive and anxiety behavior of rats exposed stress

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  • 大豆たんぱく質とスクロース過剰摂取と脂質の質の相互作用がストレス負荷ラットの情動行動に及ぼす影響
  • ダイズ タンパクシツ ト スクロース カジョウ セッシュ ト シシツ ノ シツ ノ ソウゴ サヨウ ガ ストレス フカ ラット ノ ジョウドウ コウドウ ニ オヨボス エイキョウ

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Abstract

Aim : We have already showed the effect of casein and exercise on rats exposed stress. The aim of this study was to examine the interaction of excessive sucrose and soy protein on aggressive behavior and anxiety behavior of rats exposed stress. Method : Sprague-Dawley rats were randomly divided into stress group and control group. Then, each group were divided into three fatty acid (n-9 olive, n-6 safflower, n-3 egoma) groups. Further, each fatty acid group has divided into with sucrose and without sucrose groups. The rats of each group fed the experimental diet as equal amount of calories a day for eight weeks. Behavior experiment was conducted by the Elevated Plus Maze test and the Aggressive behavior test. Exercise was done by Treadmill of rat. Result : In agressive behavior, the effect of sucrose with stress of egoma oil group showed lower than without sucrose of rats with stress. In contrast, the effect of high sucrose of safflower and egoma oil groups of rats without stress showed higher aggressive behavior. The comparison of win rate of agressiveness among fatty acids showed egoma > olive > safflower with stress and without sucrose, and with sucrose showed olive> egoma > safflower. In anxiety behavior, egoma oil group showed significant high anxiety behavior with sucrose without stress. In contrast, safflower group showed significant high anxiety behavior with sucrose with stress. The effect of exercise did not show anything in safflower and egoma groups. Conclusion : In stress, egoma oil group showed lower aggressive behavior with sucrose. In stress, safflower oil group showed lower aggressiveness than olive and egoma oil groups in spite of with or without sucrose. In stress, safflower oil group showed significant high anxiety with sucrose. Without stress, anxiety of olive oil group reduced significantly with sucrose and exercise.

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