颐脑解郁颗粒抗抑郁作用及其机制

摘要

AIM To observe the effect of Yinao Jieyu Granules (Curcumae Radix,Schisandrae chinensis Fructus,Gardeniae Fructus,etc.) on rats depression induced by olfactory bulbectomy (OB).METHODS The model rats randomly divided into model group,Fluoxetine Hydrochloride Capsules group,Yinao Jieyu Granules groups (7.29,3.65 and 1.82 g crude drug/kg) went on with their corresponding intragastric administration once per day (the same volume of purified water for the model group) for 2 weeks.The weight,food intake,liquid consumption,open field test,killing test,light/dark transition test and step-down test were checked every week before and after the administration.The blood sample and brain tissue were procured within 2 hours after the final administration.The serum CRH,ACTH and CORT concentration and the content of hippocampal monoamine neurotransmitters 5-HT,DA and NE were tested by ELISA method.RESULTS Compared with the model group,rats of Yinao Jieyu Granules groups (7.29-3.65 g crude drug/kg) displayed a better sucrose consumption improvement (P ＜ 0.05);more content increase of hippocampal tissue 5-HT (P ＜ 0.05);longer duration time in the dark and on the platform before the error making (P ＜ 0.05);less horizontal and vertical movement,and more significant content decrease of the serum CRH (P ＜ 0.05).CONCLUSION Yinao Jieyu Granules can relieve the depression behaviors of OB animals,and the mechanism may associate with its efficacy on 5-HT and CRH modulation.%目的 采用抗嗅球损毁抑郁大鼠模型(olfactory bulbectomy,OB)方法 观察颐脑解郁颗粒(郁金、五味子、栀子等)对抑郁症的治疗作用.方法 将大鼠随机分为模型组,盐酸氟西汀胶囊组,颐脑解郁颗粒7.29、3.65、1.82 g生药/kg组,灌胃给药1次/d(模型组给予等量纯化水),连续2周.给药前及给药后每周检测体质量、摄食量,进行液体消耗实验、敞箱实验、残杀实验、避暗被动回避、跳台被动回避.末次给药后2h取血样及脑组织,采用ELISA法检测血清促肾上腺皮质激素(ACTH)、皮质醇(CORT)、促肾上腺皮质激素释放激素(CRH)质量浓度,以及海马单胺类神经递质5-羟色氨(5-HT)、去甲肾上腺素(NE)、多巴胺(DA)含有量.结果 与模型组比较,颐脑解郁颗粒(7.29～3.65 g生药/kg)能明显增加嗅球损毁抑郁大鼠糖水消耗量(P＜0.05),明显增加海马组织5-HT含有量(P＜O.05),明显延长大鼠避暗犯错误潜伏期和跳台犯错误潜伏期(P＜0.05),明显减少大鼠水平、垂直运动次数和跳台被动回避试验错误次数(P＜0.05),明显降低血清CRH浓度、降低残杀评分(P＜0.05).结论 颐脑解郁颗粒有抗嗅球损毁致抑郁作用,其机制可能与调节5-HT、CRH有关.