医药学论文:针刺对抑郁症模型大鼠海马区单胺类神经递质的影响
【关键词】针刺治疗;抑郁症;疾病模型;大鼠;行为学;5-HT;NE
Effects of acupuncture on serotonin and norepinephrine in hippocampus of depressed model rats
【Abstract】Objective To observe how acupuncture affects the mechanism of depression model rats.Methods Using Open-Field method to randomly select 40 adult SD male rats into normal control, model group, drug treatment and acupuncture treatment group, 10 rats per group. Separation, long term unpredictability, medium stimulation techniques were applied to modify rats behavior. Then using Open-Field method to reflect changes in depressed model rats behavior between groups treated with acupuncture and control. And the concentration of monoamine neurotransmitters and their metabolites in hippocampus of rat brain were determined by HPLC-ECD. Results Compared with normal control, acupuncture treatment group's behavior was not different (P>0.05)on the 7th day after treatment. On the 21th day after treatment, acupuncture treatment group's behavior was not different (P>0.05)with drug treatment group, and was more different with model group(P<0.01). Compared with normal group on the 21th day of treatment, the concentration of serotonin and norepinephrine in hippocampus of acupuncture treatment group was not different (P>0.05), whereas was more different with model group (P<0.05,P<0.01).Conclusion This experiment proved that acupuncture treatment could change the behavior abnormality of depressive model rats. The curative effects is comparable to flouxetine. The changes of the concentration of serotonin and norepinephrine in hippocampus are one of the mechanism.
【Key words】acupuncture treatment;depression;disease model;rat;behavior;5 hydroxytryptamine (5-HT);NE
自1984年,针灸开始介入抑郁症的治疗以来,取得了确切的临床疗效,但是对于针刺作用的过程和机制研究尚不深入。为了探讨针刺在抑郁症治疗中的应用规律,我们观察了针刺对抑郁症模型大鼠海马区内单胺类神经递质的影响,并与氟西汀(选择性5-羟色胺再摄取抑制剂)作对照。现将研究结果报告如下。
1 材料与方法
1.1 动物与分组
成年SD大鼠,体重180~220g,雄性,南京中医药大学动物中心提供。首先用Open-Field法作行为学评分,选择得分相近的40只大鼠进行实验分组。将大鼠随机分为正常组、模型组、药物组、针刺组,共4组,每组10只;正常组每笼饲养5只,模型组及针刺组每笼饲养1只(分养)。
1.2 实验方法
1.2.1 复制模型
参考文献[1]复制抑郁症模型:模型组、药物组、针刺组大鼠,共接受21天各种不同的应激,包括冰水游泳(4℃,5min)、热应激(45℃,5min)、禁水(24h)、夹尾(1min)、电击足底(电压50mV,每隔15s刺激1次,每次持续10s,共15次)、摇晃(1次/s,5min)、禁食(24h)和昼夜颠倒等刺激,平均每种刺激各4次。正常组,常规饲养,不接受任何应激性刺激。
于实验第1、21天测定各大鼠行为学(水平运动和垂直运动)。
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