淫羊藿提取物对小鼠自发活动和睡眠功能的影响

背景本草纲目记载小檗科淫羊藿属植物淫羊藿有益精气,坚筋骨,补腰漆,强心力等功能,近年来临床应用及药理作用报道较多.目的观察在抖笼换能器法,阈上、阈下剂量戊巴比妥钠干预的情况下淫羊藿提取物对小鼠自发活动和睡眠功能的影响.单位赣南医学院,数理教研室,分析实验室,药理教研室.材料健康成年昆明种雄性小鼠110只,清洁级,体质量18～22 g.方法2004-08/09在赣南医学院科研中心实验室完成.①小鼠(n=30)腹腔注射1 000 g/L的淫羊藿提取物(0.01 mL/g),15 min后放入吊笼中,稳定3 min后记录用药后15 s内自发活动波形.②小鼠(n=40)腹腔注射1 000 g/L的淫羊藿提取物(0.01 mL/g),15 min后,腹腔注射阈上剂量的戊巴比妥钠(2.5 g/L)0.02 mL/g,观察小鼠翻正反射消失时间.③小鼠(n=40)腹腔注射1 000 g/L的淫羊藿提取物(0.01 mL/g),15 min后,腹腔注射阈下剂量的戊巴比妥钠(2.5 g/L)0.01 mL/g,观察小鼠翻正反射消失时间.主要观察指标小鼠自发活动次数;阈上剂量戊巴比妥钠小鼠睡眠时间;阈下剂量戊巴比妥钠小鼠睡眠时间.结果实验动物110只,全部进入结果分析.①浓度为0.1 mL/10 g的淫羊藿提取物具有明显抑制小鼠自发活动,与对照组比较中波、大波出现次数显著减少(7.4±6.5,47.1±18.7;t=3.265,P＜0.01).②浓度为0.01 mL/g淫羊藿提取物能显著加速阈上剂量戊巴比妥钠小鼠的入睡时间和延长睡眠时间,与对照组差异显著(3.9±2.8),(219.7±87.2);(5.8±2.9),(113.0±77.4)min;t=2.452,2.501,P＜0.05].③浓度为0.01 mL/g淫羊藿提取物能显著加速阈下剂量戊巴比妥钠的入睡时间和延长睡眠时间,与对照组比较差异显著(6.6±5.2),(60.3±71.7);0,0 min;t=3.275,P＜0.01],与戊巴比妥钠有协同的中枢抑制作用.结论淫羊藿提取物具有明显的中枢抑制作用,能明显抑制小鼠自发活动,同时还能明显加快阈上剂量戊巴比妥钠小鼠的入睡时间,同时还可显著延长阈上剂量戊巴比妥钠小鼠的睡眠时间.增强阈下剂量戊巴比妥钠的催眠时间和增加入睡动物数.

Effects of herba epimedium extract on spontaneous activity and sleep function of mice

BACKGROUD: According to the record of Compendium of Herbology of herbs epimedium, Berberidaceae barrenwort genus, herbs epimedium has the effects of supplementing essence qi, consolidating bones and tendons, tonifying bruise of loin and strengthening cardiac ability, etc. In recent years, its clinicalapplications and pharmacological effects have been reported more frequently.OBJECTIVE: To investigate the effects of herba epimedium extract on spontaneous activity and sleep function of mice under the intervention of suprathreshold and subthreshold dose of pentobarbital sodium with the method of jiggle-cage transducer.SETTING: Department of Mathematics and Physics, Laboratory of Analysis, Department of Pharmacology, Gannan Medical College.MATERIALS: A total of 110 healthy adult Kunming male mice of clean grade, with a body mass between 18 g and 22 g.METHODS: The experiment was conducted in Laboratory of Scientific Research Institute of Gannan Medical College from August to September 2004. ① The mice (n=30) were injected intraperitoneally with 1 000 g/L herbs epimediu extract(0.01 mL/g) and put into hanging cage 15 minutes later, after a 3-minute stabilization period, waveforms of spontaneous activity within 15 s after the administration of drug were recorded. ②The mice (n=40) were intraperitoneally injected with 1000 g/L herba epimediu extract(0.01 mL/g), 15 minutes later, injected intraperitone ally with 0.02 mL/g suprathreshold dose of pentobarbital sodium (2.5 g/L), and then observe the disappearance time of righting reflex of the mouse. ③ The mice (n=40) were injected intraperitoneally with 1 000 g/L herba epimediu extract(0.01 mL/g), 15 minutes later,intraperitoneally injected with 0.01mL/g subthreshold dose of pentobarbital sodium (0.25%),and then observe the disappearance time of righting reflex of the mouse.MAIN OUTCOME MEASURES: Frequency of spontaneous activity of the mice; sleeping time of the mouse with suprathreshold and subthreshold dose of pentobarbital sodium.RESULTS: All the 110 mice entered result analysis. ① Herba epimedium extract (0.1 mL/10 g) could significantly inhibit the spontaneous activity of the mice, and the frequencies of large waves and moderate waves decreased obviously (7.4±6.5, 47.1±18.7; t=3.265, P ＜ 0.01). ② Herbs epimedium extract (0.01mL/10g) could shorten the time for falling asleep and prolong the sleeping time of the mouse with suprathreshold dose of pentobarbital sodium, and there was significant difference as compared with the control group (3.9±2.8), (219.7±87.2); (5.8±2.9), (113.0±77.4) minutes; t=2.452, 2.501, P ＜ 0.05]. ③ Herba epimedium extract (0.01 mL/10 g)could significantly prolong the time for falling asleep and the sleeping time of the mouse with subthreshold dose of pentobarbital sodium, and there was significant difference as compared with the control group (6.6±5.2),(60.3±71.7); 0, 0 minute; t=3.275, P ＜ 0.01]. Herba epimedium extract and pentobarbital sodium had synergistic effect of central inhibition.CONCLUSION: Herba epimedium extract has the effect of significant central inhibition, which could inhibit the spontaneous activity of mice ,remarkably shorten the time for falling asleep,and obviously prolong the sleeping time of the mouse with suprathreshold dose of pentobarbital sodium, prolong the time for falling asleep of the mouse with subthreshold dose of pentobarbital sodium and increase the amount of animals falling asleep.