柴胡疏肝散及其拆方对慢性应激抑郁大鼠模型海马组织ERK1/2 mRNA表达的影响

目的:探讨柴胡疏肝散及其拆方的抗抑郁作用及机制.方法:将SD大鼠随机分为正常对照组、模型对照组、全方干预组、拆方干预I组和II组、氟西汀对照组.采用慢性轻度不可预见性应激配合孤养复制抑郁模型;运用敞箱试验和蔗糖水消耗实验观察大鼠行为改变;荧光实时定量PCR(FQ-PCR)检测各组大鼠海马组织细胞外调节蛋白激酶(extr...

Effect of Chaihu Shugan San and its components on expression of ERK1/2 mRNA in the hippocampus of rats with chronic mild unpredicted stress depression

Objective To explore the antidepressant effect and mechanism of Chaihu Shugan San (CHSGS) composition, a compound traditional Chinese herb medicine and its components. Methods Rats were randomly divided into 6 groups: normal control group, model control group, a CHSGS group, a component I group, a component II group and a fluoxetine control group. The depression model was replicated by chronic unpredictable mild stress and single house for 28 d. Behavioral scores of the rats were detected by Open-field test and sucrose solution consumption test, and ERK1/2 mRNA expression in the hippocampus tissue was assayed by real-time fluorescent quantitative PCR. Results ERK1/2 mRNA expression was down-regulated in the depression model group compared with the normal control group (P<0.01). Compared with the model group, ERK1/2 mRNA expression in the CHSGS group and fluoxetine group was both up-regulated (P<0.05 or P<0.01); and only ERK1 mRNA expression in the component I group was up-regulated (P<0.05). No significant difference existed between the component II group and the model group (P>0.05). Conclusion Isolated-living condition and chronic mild unpredictable stress can down-regulate the expression of ERK1/2 mRNA in the hippocampus tissue. CHSGS may exert an antidepressant effect through increasing the expression of ERK1/2 mRNA in the hippocampus, component I may play an important role in its antidepression effect, while compatibility of the use of component II can enhance the antidepressant efficacy.