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目的 :探讨维生素E对应激大鼠海马齿状回长时程增强的保护作用。方法 :在束缚应激条件下 ,通过补充维生素E(VE) ,观察大鼠在应激过程中的行为效应。结果 :接受应激大鼠在旷场实验中的穿行格数明显增加 ;长时程增强 (LTP)诱发率降低 ,突触传递功能减弱 ;血浆糖皮质激素水平明显升高。而应激同时适量补充VE的大鼠未出现上述异常变化。结论 :适当补充维生素E可减轻应激性海马突触传递功能障碍 ,提高机体应激适应能力
Objective: To investigate the protective effect of vitamin E on long-term potentiation of dentate gyrus in hippocampus of stress-stressed rats. Methods: Under the restraint stress condition, we observed the behavioral effects of stress in rats by vitamin E (vitamin E) supplementation. Results: The passage number of rats exposed to stress increased significantly in the open-field test; the long-term potentiation (LTP) induced rate decreased, the synaptic transmission decreased; and the plasma glucocorticoid level increased significantly. The stress while the amount of VE supplement rats did not appear the above abnormal changes. Conclusion: Appropriate vitamin E supplementation can reduce stress synaptic transmission of hippocampus dysfunction, improve the body’s ability to adapt to stress