开心散对多发梗死性痴呆大鼠学习记忆功能及ATP/AMP的影响

Effects of Kaixin Powder on Learning and Memory Function and ATP/AMP Ratio in Rats with Multiple Infarct Dementia

目的:探讨开心散对多发梗死性痴呆大鼠学习记忆及ATP/AMP、GABA、iNOS含量的影响。方法:采用微血栓栓塞法制备多发梗死性痴呆大鼠模型,采用Morris水迷宫和开场实验评价学习记忆功能及运动行为;HE染色法评价海马CA1区病理形态学改变;HPLC法测定脑组织ATP和AMP的含量;ELISA试剂盒检测脑组织γ-氨基丁酸含量和外周血清iNOS含量。结果:与模型组比较,开心散可以显著缩短模型大鼠逃避潜伏期、增加穿越平台次数、增加开场实验大鼠站立次数、延长运动时间、缩短静止时间,改善海马CA1区神经细胞损伤,显著提高脑组织ATP/AMP、降低脑组织GABA含量和血清iNOS含量,具有显著的统计学意义(P <0.05)。结论:开心散具有改善多发梗死性痴呆大鼠学习记忆功能及运动行为异常的作用,其机制与降低脑组织GABA和血清iNOS含量,提高脑组织ATP/AMP,改善脑组织能量供应有关。

Objective: To investigate the effects of Kaixin Powder on learning and memory, ATP/AMP ratio, GABA andiNOS levels in rats with multiple infarct dementia. Methods: The rat model of multi-infarct dementia was established bymicro-thromboembolism. Morris water maze and opening experiment were used to evaluate learning and memoryfunction. The pathological changes of hippocampal CA1 area were evaluated by HE staining. The contents of ATP andAMP in brain tissue were determined by HPLC. The content of γ-aminobutyric acid and iNOS in peripheral blood weredetected by ELISA kit. Results: Compared with the rats of model group, rats of Kaixin Powder group can significantlyshorten the escape latency, increase the number of crossing platforms, Results: Compared with the model group, increasethe standing times in the opening experiment, prolong the exercise time, shorten the resting time, improve the nerve celldamage in the hippocampal CA1 area, and significantly increase the ratio of ATP/AMP of brain tissue, decreased brainGABA content and serum iNOS content(P < 0.05). Conclusion: Kaixin Powder has the effect of improving learning andmemory function and abnormal motor behavior in rats with multiple infarct dementia. The mechanism is related toreducing GABA and i NOS content in brain tissue, increasing ATP/AMP ratio in brain tissue and improving energysupply in brain tissue.