酸枣仁汤对抑郁模型大鼠皮质、海马中NMDAR1、NMDAR2A、NMDAR2B基因表达的影响

目的观察酸枣仁汤对抑郁模型大鼠大脑皮质、海马中NMDAR1、NMDAR2A、NMDAR2B基因表达的影响,并探讨其作用机制。方法将大鼠随机分为空白组、模型组、西药组和酸枣仁汤高、中、低剂量组,除空白组外,其余各组大鼠均以慢性应激法复制抑郁症模型,各给药组给予相应药物灌胃。采用RT-PCR检测大鼠皮质、海马中NMDAR1、NMDAR2A和NMDAR2B基因的表达。结果与模型组比较,酸枣仁汤高、中剂量组大鼠皮质和海马中NMDAR1阳性表达均降低(P0.01);酸枣仁汤高、中剂量组和西药组皮质和海马中NMDAR2A阳性表达均降低(P0.05,P0.01),酸枣仁汤低剂量组海马中NMDAR2A表达增高(P0.05);酸枣仁汤高、中、低剂量组和西药组皮质中NMDAR2B阳性表达均降低(P0.01),酸枣仁汤中、低剂量组海马中NMDAR2B表达增高(P0.01)。结论酸枣仁汤可能通过降低大鼠皮质、海马中NMDAR1、NMDAR2A、NMDAR2B基因表达达到治疗抑郁症的作用。

Effects of Suanzaoren Decoction on Expression of NMDAR1, NMDAR2A and NMDAR2B ;RNA in Cortex and Hippocampus of Depression Model Rats

Objectives To observe the effect of Suanzaoren Decoction on the expression of NMDAR1, NMDAR2A and NMDAR2B RNA in cortex and hippocampus of depression model rats, and explore the mechanism of treating depression. Methods Ninty SD rats were randomly divided into blank group, model group, western medicine group, Suanzaoren Decoction high, medium and low dose group. Except the blank group, the other groups were replicated the rat model of depression in chronic stress. The treatment groups were given corresponding drugs by gavage. The expression of NMDAR1, NMDAR2A and NMDAR2B genes in cortex and hippocampus were detected by RT-PCR. Results Compared with the model group, the positive expression of NMDAR in cortex and hippocampus decreased in Suanzaoren Decoction high and medium dose group （P〈0.01）. The positive expression of NMDAR2A in cortex and hippocampus of Suanzaoren Decoction high, medium dose group and western medicine group decreased （P〈0.05, P〈0.01）, the expression of NMDAR2A in hippocampus increased in Suanzaoren Decoction low dose group （P〈0.05）. The positive expression of NMDAR2B in cortex decreased in western medicine group, Suanzaoren Decoction high, medium and low dose group （P〈0.01）. The expression of NMDAR2B in hippocampus increased in Suanzaoren Decoction medium and low dose group （P〈0.01）. Conclusion Suanzaoren Decoction can play the role of treating depression by decreasing the expression of NMDAR1, NMDAR2A and NMDAR2B RNA in cortex and hippocampus.