健脾与补肾对脾虚模型大鼠学习记忆及脑内P物质、血管活性肠肽的影响

目的探讨脾虚模型大鼠学习记忆和脑内P物质(SP)、血管活性肠肽(VIP)的变化,以及健脾、补肾中药对上述变化的改善作用。方法采用苦降泻下、饮食失节加劳倦过度法建立脾虚大鼠模型,检测健脾与补肾对其学习记忆及脑内SP、VIP变化的影响。结果水迷宫实验学习期和记忆期,模型组游全程时间长,错误次数多;健脾组与补肾组游全程时间短,错误次数少。跳台实验学习期和记忆期,模型组错误次数较多,潜伏期短;健脾组错误次数较少,潜伏期长;在学习期补肾组错误次数较少,潜伏期较长,但记忆期错误次数较多。模型组SP免疫阳性反应物在下丘脑腹侧核、海马CA1区、前额叶皮层显著减少;健脾组在上述脑区则显著增加;补肾组海马CA1区和前额叶皮层明显增加,但在下丘脑腹侧核减少。模型组VIP免疫阳性反应物在海马CA1区、前额叶皮层显著减少;健脾组与补肾组海马CA1区、前额叶皮层VIP免疫阳性反应物显著增加。结论脾虚模型大鼠学习记忆及脑内对学习记忆有促进和增强作用的SP、VIP明显下降。健脾、补肾中药对上述变化有明显改善作用。

The Influence of Invigorating Spleen and Restoring Virility to on the Ability of Learing and Memory and SP, VIP Level in Brain

Objective To inquire into the changes of learning and memory ability and the level of SP, VIP in the brain of the model of Spleen insufficiency. To observe the influence invigorating spleen and restoring virility on above changes. Methods Establishing the spleen insufficiency model of rat by adopting bitter decline diarrhea, wild eating and overworking, to examine influence of invigorating spleen and restoring virility on the ability of learning and memory with the change of SP and VIP in the brain. Results In the period of study and remember of the water maze experiment, the swim whole distance time was long and mistake number was many in the model group; the swim whole distance time was short and the mistake number was little in the group of invigorating the Spleen and restoring virility. In the period of study and remember of the diving platform experiment, the mistake number of times is more and the incubation period was short in the model group; the mistake number was less and the incubation period was long in Spleen invigrating group. At the period of remember mistake number was more. In the model group, the immunoreaction masculine substance of SP level decrease obviously in the hypothalamus ventral kernel, the hippocampi CA1 area and forehand cortex; on above mentioned parts, the group of invigorating spleen and restoring virility increases distinctly, in the group of restoring virility increases distinctly in the hippocampi CA 1 area and forehead cortex, but decreased in hypothalamus ventral kernel. In the model group, the immunoreaction masculine substance of VIP level decreased obviously;in the hippocampi CA1 area and cortex;on above mentioned parts, the groups of invigorating spleen and restoring virility increases obviously. Conclusion In the model group, the ability of learing and memory with SP and VIP level in the brain changed. Invigorating spleen and restoring virility can improve above changes remarkably.