经轻胶囊对雌二醇诱发的经前抑郁状态干预机制的实验研究
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摘要
目的:用外源性雌激素造成实验大鼠高雌激素状态,探讨高雌激素与经行抑郁的关系,并用疏肝调经中药经轻胶囊进行干预,探讨经轻胶囊的干预机制。方法:选择3—4月龄成年未孕SD大鼠,随机分为空白组、利血平组、雌激素组、雌激素+左洛复组、雌激素+甲基睾丸素组、雌激素+克罗米酚组、雌激素+安宫黄体酮组、雌激素+经轻胶囊组,分别对每只动物进行阴道脱落细胞涂片观察,逐只建立动物动情周期档案,选择每只大鼠的动情期开始造模,每日上午皮下注射苯甲酸雌二醇注射液,连续3天。造成实验动物体内高雌激素状态,观察大鼠行为学及中枢神经递质的变化,并与利血平造成的经典抑郁模型进行比较,评价雌激素造模的成功。造模同时分组给予药物灌服,观察各组大鼠阴道角化细胞指数,实验前后行为学变化,实验后血清E_2、P含量及E_2/P比值,中枢神经递质5-HT、DA含量,海马神经生长因子NGF及其mRNA表达。结果:外源性雌激素可造成实验大鼠持续高水平的阴道角化细胞指数,升高血清E2水平、使中枢5-HT、DA浓度降低,导致动物行为学发生变化:敞箱试验中水平运动、垂直运动、清洁次数明显减少,中央格停留时间明显延长,和利血平组相比,改变的程度虽有差异,但变化的趋势却是一样的。说明在大鼠动情后期给予外源性的雌激素,可以造成实验大鼠出现抑郁状态。经轻胶囊能降低大鼠体内异常增高的E_2水平,同时也使P水平升高,进而E_2/P比值下降,并且能增加脑干5-HT、DA含量,增加海马神经生长因子NGF及其mRNA的表达,改变动物的抑郁行为。结论:在大鼠动情期给予外源性雌激素可以导致动情后期大鼠出现抑郁的病理状态;中药经轻胶囊可降低体内异常增高的雌激素水平,改善高雌抑郁大鼠的病理变化,动物的抑郁行为得到纠正。
Objective:The objective of this dissertation is to investigate the relationship between menstrual depression and high-estrogenic, by introducing experimental rats into high oestrogenic state using Estradiol Benzoate. Further, Jingqing capsules-a traditional Chinese medicine that disperses the stagnated Liver-Qi and regulates menstruation are introduced into the rat model, and their intervention mechanisms are investigated. Methods:We used young animal model of three to four months old impregnated SD female rats and randomly divided the rats into eight different experimental groups. Specifically speaking, they are the control group, the reserpine group, the Estradiol group, the Estradiol with sertroline group, the Estradiol with methyl testosterone group, the Estradiol with clomiphene group, the Estradiol with medroxy progesterone group and the Estradiol with Jingqing Capusule group. We performed vaginal smear test for each animal, and set up the files for its estrous cycle, then made the model during the estrous period. We injected Estradiol Benzoate into experimental rats on three consecutive mornings to introduce high oestrogenic state, and observed rats' behavioral changes as well as changes in their central neuro transmitter. We then compared the results with the classic depression model to evaluate the degree of success of oestrogenic modelling. At the same time of modeling, the above mentioned medicines were given for each group. The corresponding changes in vaginal keratinized cell index, behavior, serum E_2 and P level and the ratio of E_2/P, the quantity of 5-HT and DA of central neuro transmitter, as well as hippocampus- the neuron growth factor (NGF) and its mKNA expression were recorded and analyzed. Results:Our experiments demonstrate that Estradiol Benzoate can increase vaginal kerratinized cell index, increase serum E_2 contents, decrease Brain stem neur- otransmitter 5-HT and DA concentrations and change the behavior of the animals: in open field test of the rats, the vertical motion, level motion and frequency of cleaning are decreased. The time of rats staying in the center are significantly increased. Compared with the reserpine group, the trend of change is the same, though the degree of change varies. These results show that Exogenetic
引文
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