绿萼梅总黄酮对小鼠抑郁的改善作用

目的研究绿萼梅总黄酮对小鼠的抗抑郁作用。方法采用昆明种小鼠随机分为对照组、阿米替林或氟西汀(20 mg/kg)组、绿萼梅总黄酮(120、240、360 mg/kg)组,每小组各12只,每天ig给药1次。通过小鼠强迫游泳实验、悬尾实验、利血平诱导眼睑下垂和体温降低模型、5-羟基色氨酸(5-HTP)诱导小鼠甩头模型,考察绿萼梅总黄酮的影响。结果绿萼梅总黄酮各剂量均能显著缩短小鼠强迫游泳、悬尾不动时间(P0.05、0.01);绿萼梅总黄酮240、360 mg/kg能显著抑制利血平诱导的小鼠眼睑下垂和体温降低(P0.05、0.01),同时能显著增强5-HTP诱导的小鼠甩头次数(P0.05、0.01)。结论绿萼梅总黄酮对小鼠各模型有抗抑郁的作用。     

天麻醇提取物对小鼠的抗抑郁作用

目的:对天麻乙醇提取物(ethanolic extracts ofGastrodia elata,EEGE)的抗抑郁作用机制进行研究。方法:用药物给小鼠灌胃7d后,观察小鼠在悬尾试验,强迫游泳试验中不动时间的变化情况以及小鼠开野试验中自主活动变化情况。用荧光分光光度法测定小鼠脑组织中海马区和纹状体区单胺递质去甲肾上腺素(NA)、多巴胺(DA)、五羟色胺(5-HT)含量。结果:200,300mg.kg-1EEGE可以明显缩短小鼠在强迫游泳试验、悬尾试验中不动时间,100mg.kg-1的醇提物有降低不动时间的趋势,但效果不明显;300mg.kg-1提取物的效果比阳性对照抗抑郁药氟西汀的作用还强。无论实验剂量的EEGE还是氟西汀对小鼠的自主行为均没有显著的影响。与空白组相比,200、300mg.kg-1EEGE显著提高了海马区NA的浓度;各剂量EEGE均显著降低纹状体中DA的浓度;各剂量EEGE均显著提高纹状体中5-HT的浓度。结论:天麻醇提物对抑郁模型小鼠具有显著的抗抑郁作用。可能与它能改变小鼠脑内海马、纹状体的单胺类神经递质浓度水平有关。     

人参总皂苷对小鼠的抗抑郁作用

目的：初步探讨人参总皂苷对小鼠的抗抑郁作用。方法：选取健康雄性昆明种小鼠,随机分为5组,空白对照组、阳性药组、人参总皂苷125、250、500 mg.kg^-1剂量组。通过小鼠自主活动实验、小鼠强迫游泳实验和小鼠悬尾实验,观察人参总皂苷对小鼠抗抑郁作用的影响。结果：各给药组小鼠自主活动行为与空白对照组比较均无明显差异;人参总皂苷125、250、500 mg.kg-1均可以显著缩短小鼠强迫游泳及小鼠悬尾不动时间。结论：实验结果表明人参总皂苷在小鼠＂行为绝望＂模型中有一定的抗抑郁作用。     

槟榔壳总酚类提取物抗抑郁作用研究

目的:探讨槟榔壳总酚类提取物对抑郁模型小鼠的抗抑郁作用。方法:采用小鼠悬尾、强迫游泳等抑郁模型,以小鼠行为绝望的不动时间作为指标,考察槟榔壳总酚类抗抑郁活性。结果:槟榔壳总酚类320,160 mg.kg-1剂量组均能显著减少小鼠悬尾和强迫游泳的不动时间。结论:槟榔壳总酚类可以改善小鼠的绝望行为,具有明显的抗抑郁作用。     

蓝莓提取物的抗抑郁活性研究

目的 探讨蓝莓不同极性部位提取物的抗抑郁活性.方法 采用75％乙醇浸提法提取新鲜蓝莓,提取液过滤、浓缩后,用大孔树脂进行初步分离,得到不同极性部位的蓝莓提取物.制备小鼠抑郁模型,以盐酸氟西汀为阳性对照药,考察蓝莓不同部位提取物对抑郁小鼠悬尾、强迫游泳行为绝望的累积不动时间和糖水偏好率的影响.结果 与空白对照组及各组试验...     

越鞠丸及各单味药醇提物对小鼠的抗抑郁作用研究

目的:探讨越鞠丸全方及各单味药(香附、川芎、栀子、苍术、神曲)醇提物的抗抑郁活性。方法:采用小鼠悬尾和强迫小鼠游泳实验2种行为绝望法复制小鼠抑郁模型,对越鞠丸全方及各单味药分别进行抗抑郁活性研究。结果:除神曲外,越鞠丸全方及各单味药醇提物均能不同程度地缩短小鼠悬尾不动时间和小鼠强迫游泳不动时间,具有抗抑郁样活性;越鞠丸全方醇提物、苍术和川芎可显著缩短小鼠悬尾不动时间和游泳不动时间。结论:越鞠丸全方及香附、苍术、川芎、栀子醇提物均有不同程度的抗抑郁活性,其抗抑郁活性部位/成分可能主要存在于苍术、川芎2味药材之中。     

豆腐果苷衍生物W0620对行为绝望小鼠抗抑郁作用的研究

抑郁症是以抑郁为主要症状的一种常见病,目前的抗抑郁药物只能缓解部分症状,毒副作用又较多,因此研究开发疗效好、毒副作用少的抗抑郁新药成为近些年来研究的热点[1,2].豆腐果苷是从我国云南山龙眼科植物萝卜树的果实中提取出的有效成分,其化学结构与天麻素相似,具有止痛、抗惊厥、安眠、镇静和抗抑郁等作用[3,4].本研究基于前期对豆腐果苷衍生物(21种化合物)的抗抑郁活性筛选工作,用两种经典动物抑郁模型对抗抑郁药效较强的有效化合物W0620进行深入探讨,为进一步研发具有高效、低毒的抗抑郁新药提供实验依据.     

异槲皮苷抗抑郁作用实验研究

目的研究异槲皮苷对抑郁症模型小鼠的的抗抑郁活性。方法 ICR小鼠,随机分为空白模型组、阳性对照（盐酸氟西汀）组、异槲皮苷不同剂量组和10%异槲皮苷混合物不同剂量组,观察异槲皮苷对小鼠强迫游泳实验和小鼠悬尾实验的影响。结果与模型组相比,0.3 mg/kg槲皮苷和3 mg/kg10%异槲皮苷混合物能显著缩短小鼠在绝望模型中的不动时间（P〈0.01）。结论低剂量的异槲皮苷具有一定的抗抑郁活性,其机制可能与异槲皮苷的抗氧化作用及抑制皮质激素分泌有关。     

豆腐果苷抗抑郁作用的初步研究

目的初步探讨豆腐果苷的抗抑郁作用。方法采用小鼠悬尾实验及小鼠强迫游泳实验方法观察豆腐果苷的抗抑郁作用。结果在小鼠悬尾实验和小鼠强迫游泳实验中,豆腐果苷在20、30mg/kg剂量下能明显缩短小鼠的悬尾不动时间,在30、40mg/kg剂量下能明显缩短小鼠强迫游泳的不动时间。结论豆腐果苷在“行为绝望”动物模型中呈现抗抑郁作用,且量效曲线呈现行为学特有的U型曲线特征。     

三七皂苷对急性和慢性应激抑郁模型大鼠抗抑郁样作用的研究

目的单胺假说认为抑郁症是大脑中去甲肾上腺素(NE)和5-羟色胺(5-HT)功能不足引起的。然而,资料文献中一直没有关于三七皂苷有抗抑郁活性的记载,此实验为探讨三七皂苷抗抑郁作用。方法在本研究中,我们设计利用体内含有三七总皂苷的小鼠进行两项动物抑郁模型试验。结果研究表明影响了固定的反应并不影响自发活动。此外,我们分析了神经慢性应激试验,发现抗抑郁样作用。结论三七总皂苷可能导致在中枢神经系统中5-HT和NE的增加,影响多巴胺合成或分解。     

氟伏沙明在小鼠体内抗抑郁作用的时辰药理学及其机制研究

目的:研究氟伏沙明在小鼠体内抗抑郁作用的时辰药理学及其可能机制。方法:以生理盐水为对照组,考察相邻2天的9:00、13:00、17:00、21:00、1:00、5:00共6个时间点注射氟伏沙明(30mg.kg-1)对小鼠在水中5min内的不动累积时间的影响,和同日内明、暗期(9:00、21:00)注射氟伏沙明对小鼠在暗箱中10min自发性活动(运动距离、运动时间、静止时间)的影响;另外还检测正常小鼠同日内明、暗期(9:00、21:00)脑组织中5羟色胺(5-HT)转运体(SERT)mRNA表达、5-HT再摄取浓度、sigma-1受体的变化。结果:与对照组比较,氟伏沙明能显著缩短小鼠的不动累积时间(P<0.01),其中21:00组不动累积时间最低,但不影响小鼠自发性活动;与明期(9:00)组比较,正常小鼠暗期(21:00)组脑组织中SERTmRNA表达和5-HT再摄取浓度及sigma-1受体的表达均明显升高(P<0.05)。结论:氟伏沙明在小鼠体内的抑郁作用具有昼夜节律性,该作用可能与中脑SERTmRNA的表达、sigma-1受体表达的昼夜节律变化相关。     

Antidepressant activity of methyl jasmonate, a plant stress hormone in mice

Methyl jasmonate (MJ) is a hormone released by plants in response to external stress, injury or pathogenic invasions. This present investigation evaluated the antidepressant effect of intraperitoneal doses of MJ in mice. Mice were given MJ in the doses of 10, 25 and 50 mg/kg daily for 7 days and then subjected to forced swim test (FST), tail suspension test (TST) and yohimbine lethality test (YLT). The results showed that MJ produced a significant decrease in the period of immobility in the FST and TST, indicating antidepressant activity. MJ potentiated the toxic effect of yohimbine in the YLT, which further suggests antidepressant property and also indicates facilitatory effect on both serotonergic and noradrenergic systems respectively. However, MJ did not significantly alter the spontaneous motor activity of the animals, which indicates a lack of central nervous system stimulant effect. Taken together, these findings suggest that MJ has antidepressant activity and the mechanisms underlying this effect may involve serotonergic and noradrenergic systems.     

Folic acid administration produces an antidepressant-like effect in mice: evidence for the involvement of the serotonergic and noradrenergic systems

Clinical studies have shown that folic acid plays a role in the pathophysiology of depression. However, very few studies have investigated its effect in behavioral models of depression. Hence, this study tested its effect in the forced swimming test (FST) and the tail suspension test (TST), two models predictive of antidepressant activity, in mice. Folic acid administered by oral route (p.o.) produced a reduction in the immobility time in the FST (50-100mg/kg) and in the TST (10-50mg/kg). The administration of folic acid by i.c.v. route also reduced the immobility time in the FST (10nmol/site) and in the TST (1-10nmol/site). Both folic acid administered by oral and i.c.v. route produced no psychostimulant effect, which indicates that its antidepressant-like effect is specific. Pretreatment of mice with p-chlorophenylalanine methyl ester (PCPA; 100mg/kg, i.p., an inhibitor of serotonin (5-HT) synthesis, for 4 consecutive days), ketanserin (5mg/kg, i.p., a 5-HT(2A/2C) receptor antagonist), prazosin (1mg/kg, i.p., an alpha(1)-adrenoceptor antagonist) or yohimbine (1mg/kg, i.p., an alpha(2)-adrenoceptor antagonist) prevented the anti-immobility effect of folic acid (50mg/kg, p.o.) in the FST. Moreover, the pretreatment of mice with WAY100635 (0.1mg/kg, s.c., a selective 5-HT(1A) receptor antagonist) blocked the decrease in immobility time in the FST elicited by folic acid (50mg/kg, p.o.), but produced a synergistic effect with a subeffective dose of folic acid (10mg/kg, p.o.). In addition, a subeffective dose of folic acid (10mg/kg, p.o.) produced a synergistic antidepressant-like effect with fluoxetine (10mg/kg, p.o.) in the FST. Overall, the results firstly indicate that folic acid produced an antidepressant-like effect in FST and in TST and that this effect appears to be mediated by an interaction with the serotonergic (5-HT(1A) and 5-HT(2A/2C) receptors) and noradrenergic (alpha(1)- and alpha(2)-adrenoceptors) systems.     

Toluene has antidepressant-like actions in two animal models used for the screening of antidepressant drugs

Rationale  Many abused solvents share a profile of effects with classical antidepressants. For example, toluene, which is a representative and widely abused solvent, has been reported to increase both serotonin and noradrenaline levels in several brain areas after an acute exposure and to act as a noncompetitive antagonist of the glutamatergic N-methyl-d-aspartic acid (NMDA) receptor subtype. Therefore, it is possible that toluene could possess antidepressant-like actions. Objective  To provide an initial screening of toluene’s antidepressant-like actions in the forced swimming test (FST) and the tail suspension test (TST) in mice and to analyze its possible mechanism of action. Materials and methods  Two series of experiments were performed. In the first one, male animals were exposed to toluene (0, 500, 1,000, 2,000, or 4,000 ppm) in a static exposure chamber for 30 min, and immediately after, evaluated for antidepressant-like effects. The results were compared with those obtained from mice treated with the serotonergic antidepressant clomipramine (CMI), the noradrenergic antidepressant desipramine (DMI), and the glutamatergic antidepressants, ketamine and MK-801. In the second part, we analyzed the effect of a combined administration of a subeffective concentration of toluene with a suboptimal dose of the various antidepressants acting at different neurotransmitter systems. Results  Toluene produced a concentration-dependent antidepressant-like action in the FST and TST and facilitated both MK-801 and ketamine antidepressant-like effects, but not those of DMI or CMI. Conclusions  Toluene has antidepressant-like effects that are synergized with NMDA receptor antagonists.     

远志醇提物对抑郁症模型小鼠的保护作用研究

目的:研究远志醇提物对抑郁症模型小鼠的保护作用。方法:通过小鼠悬尾实验、强迫游泳实验、慢性不可预知性应激+开场实验分析远志醇提物的抗抑郁作用。各小实验中雄性小鼠均分为模型对照(等容生理盐水)、氯米帕明(20mg·kg-1)和远志醇提物高、中、低剂量(10、5、2.5g·kg-1)组。结果:高、中、低剂量远志醇提物均可缩短抑郁症模型小鼠悬尾不动时间、游泳不动时间和增加移动格数。结论:远志醇提物对模型小鼠抑郁症状态有一定的改善作用。     

醒神开郁方抗抑郁作用的实验研究

目的：研究醒神开郁方的抗抑郁作用及其可能的作用机制。方法：采用小鼠悬尾、强迫游泳实验观察小鼠悬尾、游泳不动时间;自主活动实验测定小鼠自主活动次数;利血平诱导小鼠体温下降实验考察小鼠肛温、眼睑下垂度以及脑内单胺类神经递质含量等指标。采用SPSS 13.0软件对上述观察指标进行统计分析。结果：醒神开郁方对小鼠自主活动行为无显著影响;在小鼠悬尾和强迫游泳实验中,醒神开郁方低、中、高剂量组可明显缩短小鼠悬尾和强迫游泳不动时间（P〈0.05,P〈0.01,P〈0.01）。利血平诱导小鼠体温下降实验中,与模型组比较,醒神开郁方中、高剂量组可显著拮抗利血平所致小鼠的体温下降和眼睑下垂（P〈0.05,P〈0.01）;与模型组比较,醒神开郁方中、高剂量组均能显著增加小鼠脑组织内NE、5-HT含量（P〈0.01）以及DA含量（P〈0.05,P〈0.01）。结论：醒神开郁方具有显著的抗抑郁作用,其作用机制与增强脑组织内NE、5-HT、DA调节神经系统作用有关,且醒神开郁方无中枢兴奋作用。     

柴芪口服液抗抑郁作用实验研究

摘要目的：实验观察柴芪口服液的抗抑郁作用。方法：将动物随机分为空白对照组、阳性对照（氟西汀）组、柴芪口服液高、中、低剂量组,分别灌胃给予同等容积的相应药物,qd,连续给予14d,末次给药后40min,采用小鼠悬尾实验、强迫游泳实验及开场实验等方法观察柴芪口服液的抗抑郁作用。结果：在小鼠强迫游泳实验和小鼠悬尾实验中,柴芪口服液大剂量（生药6．4g·kg^-1）能明显缩短两种“行为绝望”模型小鼠的不动时间;在小鼠开场实验中,柴芪口服液6．4g·kg^-1使小鼠水平方向活动次数显著提高,与对照组比较有显著性差异（P＜0．05）。结论：柴芪口服液具有抗抑郁作用。