β-asarone对Aβ_(1-42)激活的ACM所致PC12细胞损伤的保护作用研究

目的:探讨不同浓度β-淀粉样蛋白(Aβ_(1-42))激活的星形胶质细胞条件培养液(ACM)对PC12细胞存活率及脑源性神经营养因子(BDNF)、乙酰胆碱酯酶(ACh E)蛋白表达的影响,以及β-细辛醚(β-asarone)的保护作用。方法:首先,将对数生长期的PC12细胞随机分为正常对照组、ACM(Aβ1-423.3μmol/L)组、ACM(Aβ_(1-42)10μmol/L)组、ACM(Aβ1-4230μmol/L)组,分别采用实时无标记动态细胞分析技术(Real Time Cell Analysis,RTCA)和MTT法检测各组PC12细胞的存活率,Western blot检测PC12细胞BDNF、ACh E蛋白的表达;其次,将对数生长期的PC12细胞随机分为正常对照组、ACM(Aβ_(1-42)10μmol/L)组、β-asarone(18.5、55.5、166.7μg/mL)组,RTCA法检测PC12细胞存活率的改变,Western blot检测PC12细胞BDNF、ACh E蛋白表达的变化。结果:ACM作用24 h,各组PC12细胞存活率无统计学差异(P>0.05),ACM作用36 h,ACM(Aβ1-4210μmol/L)组、ACM(Aβ_(1-42)30μmol/L)组PC12细胞存活率显著降低(P<0.01);BDNF、ACh E蛋白表达随Aβ_(1-42)浓度增加显著升高(P<0.05或P<0.01);β-asarone(18.5、55.5、166.7μg/mL)能显著提高PC12细胞的存活率,β-asarone(55.5、166.7μg/mL)组ACh E表达相比于模型组显著下降(P<0.05或P<0.01),β-asarone(55.5μg/mL)组与模型组比较BDNF表达增加(P<0.05)。结论:β-asarone能抑制ACh E的上调,对BDNF的表达有促进作用,提示β-asarone对神经元细胞有一定的保护作用。

Effects of acrous gramineus and its component, alpha-asarone, on apoptosis of hippocampal neurons after seizure in immature rats

BACKGROUND： α-asarone and acrous gramineus have been shown to play a necessary function in enhancing the reactivity and convulsant threshold to electric stimulation of immature rats. They have also been shown to effectively suppress epileptic seizures induced by pentylenetetrazol in young rats. However, the mechanisms for these roles have been still unclear. OBJECTIVE： To observe the effects in immature rats of acrous gramineus and α -asarone on apoptosis of hippocampal neurons after epileptic seizure at the protein level, and to analyze the mechanism for these effects. DESIGN： A randomized controlled animal experiment. SETTINGS： Department of Pediatrics, First Hospital of Jilin University; Department of Histology and Embryology, Norman Bethune Medical School of Jilin University; Department of Internal Medicine, Children＇s Hospital of Changchun City; Department of Neurology, First Clinical Hospital affiliated to Harbin Medical University. MATERIALS： Fifty 3-week old Wistar rats, 34-40 g, irrespective of gender, were provided by Gaoxin Research Center of Medical Animal Experiment, Changchun. The animals were treated according to the animal ethical standards. The following chemicals were used for this study： acrous gramineus powders or infusion （Batch No, 0307113, Tianjiang Medicine Company Limited, Jiangyin）, α-asarone tablets （Batch No. 030219, Tianwei Pharmaceutical Factory, Shenyang）, and phenobarbital sodium tablets （Batch No. 020608, Xinya Medicine Company Limited, Shanghai）. The animals were divided into five groups randomly. First, ten rats were chosen as the normal controls. The remaining rats were treated with i.p. injections of pentylenetetrazol to stimulate an epileptic model. METHODS： The experiments were performed at the Neurological Laboratory of the First Hospital of Jilin University between October and December 2004. The rats were treated with i.p. injections of pentylenetetrazol （60 mg/kg） to establish an epileptic model. According to Racine＇ s standard, animals that reached stage 4 and 5 were chosen and randomly divided into 4 groups： model group, phenobarbital sodium, acrous gramineus, and a-asarone group. The normal control group was treated with an i.p. injection of physiological saline （0.5 mL）. After modeling, the model groups were intragastrically administrated 0.5 mL saline. The phenobarbital sodium, acrous gramineus, and α-asarone groups were intragastrically administrated 18 mg/kg/d phenobarbital sodium, 2 350 mg/kg/d acrous gramineus and 29 mg/kg/d α-asarone, respectively. The course of treatment was twice a day for 7 days. The normal group received intragastric administration of 0.5 mL saline at the same time. The rats were sacrificed and brain sections were prepared for light microscopy and electron microscopy. MAIN OUTCOME MEASURES： （1） Pathological changes of CA1 and CA3 hippocampal region neurons were observed by light microscopy and electronic microscopy. （2） Neuronal apoptosis in the CA1 and CA3 region was measured by TUNEL staining. （3） Bcl-2 and Bax expression in CA1 and CA3 region neurons was detected by immunohistochemistry and a ratio of Bcl-2/Bax was calculated. RESULTS： All 50 immature rats were included in the final analysis. （1） Pathological changes of CA1 and CA3 region hippocampal neurons： there were different pathological changes in all groups other than the normal control group. The number of damaged neurons in the model group was highest. The phenobarbital sodium, acrous gramineus, and α -asarone group exhibited different degrees of improvement. （2） Neuronal apoptosis in the CA1 and CA3 regions： there were less TUNEL-positive cells in the CA1 and CA3 regions in the normal control group. One week after PTZ-induced seizure, numerous TUNEL-positive cells were detected in the CA1 and CA3 regions in the remaining four groups. There was a significant difference between the normal control group and the remaining four groups （t = 12.089-19.162, P 〈 0.0 1）. The number of TUNEL-positive cells was less in the phenobarbital sodium, acrous gramineus, and α-asarone groups compared to the model group （t = 4.707-5.268, P 〈 0.01）. （3）Bcl-2 and Bax expression of neurons in the CA1 and CA3 regions： The number of Bcl-2- and Bax-positive cells was less in the normal control group. The Bax-positive cells exhibited a normal shape and had large round nuclei that were predominant. One week after PTZ-induced epilepsy, the number of Bcl-2- and Bax-positive cells in the CA1 and CA2 regions was significantly increased in the remaining four groups compared to the normal control group （t = 11.606-27.042, P 〈 0.01）. The Bax-positive cells exhibited a reduced size and nuclear pyknosis was predominant. However, there was no significant difference among the four groups （P 〉 0.05）. The number of Bcl-2-positive cells in the phenobarbital sodium, acrous gramineus, and a-asarone groups were significantly increased compared to the model group （t = 4.051-6.404, P 〈 0.01）. However, the number of Bax-positive cells was not significantly different among the four groups. The ratio of Bcl-2 to Bax expression was approximately 6.0 in the normal controls, 0.7 in the model group, and 1.0 in the remaining three groups. CONCLUSION： Acrous gramineus and a-asarone increased Bcl-2 expression and decreased Bax expression, and also reduced the number of apoptotic hippocampal neurons during PTZ-induced epileptic seizures in immature rats.

The rat bowel of β-asaron absorbs the research

Objective Study the β-asaron under the condition that the bowel each segment of rat and be worth in the diffent medicine density and pH of the absorption dynamics characteristic,as to it's the rat absorbs the part in the body and it absorbs the mechanism to carry on the study,for the further design β-asaron settle release the product to provide the living creature medicine learn the basis.Methods Apply the rat to the body to infuse to flow the bowel absorption experiment investigation and absorption dynamics characteristic;adopt the HPLC method measurement β-asaron is in rat body the bowel absorbs the medicine density within the reflux liquid.Results It absorb the quantity and β-asaron of the medicine in the reflux liquid,the density of β-asaron becomes the direct proption,the absorption speed constant of the medicine is basic and constant within the scope of the 19 μg·mL-1-57 μg·mL-1;In the pH is 5.6;6.9;8.0 three kinds of dissimilarities lie the absorption velocity constant of the quality and absorb the of percentage and also did not show the difference of salience;β-asaron is in the small intestines the lower part absorb better,absorbthe velocity to press to return to bowel,ileum,jejunum,duodenum,colon to descend one by one in order,absorb the velocity constant one by one in order is 0.402,0.396,0.385,0.325 h-1.Conclusions β-asaron absorbs to present a class absorption dynamics characteristic in the bowel way,absorbing the mechanism as passive absorption;in order to return to ileum and jejunums,main absorption part there is certain absorption in the colon,too.

The effect of alpha asarone, olive oil, and dexamethasone on collagen-induced arthritis (CIA) in the mouse

Aim of the Study: The primary aim of the study was to test the effect of 2,4,5-trimethoxy-1-propenylbenzene (alpha asarone), a hypocholes terolaemic drug, on the progression of collagen induced arthritis (CIA) in mice. Olive oil,the vehicle of alpha-asarone, and dexamethasonewere used as control treatments. Set-Up: Four groups of DBA/1 mice were immunised with chicken type II collagen (CII) via the intradermal route and either left untreated or were treated with alpha asarone, olive oil, or dexamethasone. A non-immunised group was an additional control. Follow-Up: The thicknesses of the rear and front footpads were continuously monitored, and the levels of anti-collagen antibodies were measured at the end of the experiment. The animals were then sacrificed, and their rear and front limbs were removed and processed forhistological examination. Results: Alpha asarone had no anti-inflammatory effect on CIA, and in one third of the animals, it showed a proinflammatory effect that was characterised by a marked accumulation of neutrophils. Olive oil did not show any obvious antiinflammatory effect on CIA, but it lowered the level of CII antibodies by 50%, suggesting a potential long-term antiinflammatory effect. As expected, dexamethasone had a clear anti-inflammatory effect on CIA. Con- clusion: Alpha asarone did not show any antiinflammatory effect on CIA in the mice under the above conditions;however, the accumulation of neutrophils in the CIA lesions of mice treated with alpha asarone and the effect of olive oil in downregulating the levels of anti-CII antibodies in CIA are two findings that warrant further investigation.

Isolation and characterization of insecticidal activity of （Z）- asarone from Acorus calamus L.

The insecticidal activity of Acorus calamus L. rhizome-derived material against adults of Sitophilus zeamais Motschulsky was examined by using repellency method and contact toxicity. The biologically active constituent of the A. calamus rhizome was separated and identified. The results showed that the ethanol extract of A. calamus had strong repellency and contact effect to S. zeamais and the active constituent of the A. calamus was characterized as （Z）-asarone by spectroscopic analysis. Responses from the tests varied with exposure times and doses. In the repellency test, ethanol extract of A. calamus had 93.92% repellency at 629.08 μg/cm^2 but only 71.38% at 157.27 μg/cm^2 12 h after treatment. As a contrast, （Z）-asarone showed 84.50% repellency at 314.54μg/cm^2 and 77.02% at 78.63 μg/cm^2 12 h after treatment. In the filter paper diffusion test, ethanol extract of A. calamus caused 95.56% and 17.78% mortality to S. zeamais at 314.54 μg/cm^2 and 78.63 μg/ cm^2 4 days after treatment, while （Z）-asarone brought about 100.00% and 15.56% mortality at 40.89 μg/cm^2 and 15.73 μg/cm^2 respectively. These results indicate that the insecticidal activity of the A. calamus extract may be due to （Z）-asarone.

α-细辛醚上调细胞色素C及Caspase-3表达影响食管癌Eca-109细胞的生物学行为

目的:分析α-细辛醚上调细胞色素C(cytochrome C,cytC)及Caspase-3表达对食管癌Eca-109细胞生物学行为的影响。方法:将食管癌Eca-109细胞随机等量分为4组,即低、中及高剂量(分别给予25、50及100 mg/L的α-细辛醚),另随机取等量细胞加入等体积培养液作为空白组,培养48 h后通过平板克隆实验检测4组细胞增殖情况,Annexin V/PI法检测细胞凋亡情况,RT-qPCR及Western Blot法检测细胞中cytC及Caspase-3 mRNA及蛋白表达。结果:(1)细胞克隆数在空白组最高,低剂量组显著高于高剂量组;凋亡率在空白组最低,低剂量组显著低于高剂量组。(2)4组细胞迁移至小室下的细胞数空白组>低剂量组>中剂量组>高剂量组。(3)CytC及Caspase-3蛋白在高剂量组表达显著高于空白组及低剂量组,且中剂量组表达高于空白组。(4)CytC及Caspase-3 mRNA的表达:高剂量组>中剂量组>低剂量组>空白组,差异均有统计学意义(均P<0.05)。结论:α-细辛醚抑制Eca-109细胞增殖及侵袭,并且可能通过上调cytC及Caspase-3表达促进调亡。

石菖蒲生长过程中β-细辛醚积累特征及其饮片品质研究

[目的]基于气相色谱法建立石菖蒲及其挥发油中β-细辛醚的含量测定方法,比较不同产地石菖蒲饮片品质,并研究石菖蒲生长过程中不同药用部位β-细辛醚的积累规律,为合理开发和利用石菖蒲药材资源提供理论依据。[方法]采用水蒸气蒸馏法提取不同产地饮片挥发油,计算挥发油得率;采用气相色谱法测定饮片及其挥发油中β-细辛醚含量;采集不同月份石菖蒲新鲜全草,利用气相色谱法测定不同药用部位中β-细辛醚含量。[结果]不同产地饮片中β-细辛醚含量、挥发油含量以及挥发油中β-细辛醚含量差异较大,四川产地饮片指标含量差异较小;在研究期限内石菖蒲中β-细辛醚含量(以干质量计)2月最高,7月次之;石菖蒲叶基中β-细辛醚含量高于根茎,叶中几乎不含β-细辛醚。[结论]建立的检测方法简便快速、定量准确、重复性好,可用于石菖蒲的质量评价。以挥发油含量和β-细辛醚计,四川产地饮片品质较佳;以β-细辛醚计,石菖蒲在2月、7月采收较佳,根茎和叶基质量较好。

β-细辛醚对肾癌增殖及迁移侵袭的影响及其分子机制

目的研究β-细辛醚(β-As)对肾癌细胞的抑制作用及其分子机制,帮助阐明β-As抗肾肿瘤的作用并为其临床转化提供参考。方法本实验选用人肾癌细胞786-O和769-P进行体外实验,使用小鼠肾癌细胞Renca进行体内实验。应用MTT法、细胞划痕试验、细胞侵袭实验(Transwell)小室检测肾癌细胞体外增殖、迁移侵袭能力;应用蛋白印迹法检测自噬及上皮间质转化(EMT)等相关蛋白水平的变化;应用Balb/c小鼠皮下成瘤实验检测β-As在体内的抗肿瘤作用。结果β-As可通过剂量依赖的方式抑制肾癌细胞786-O和769-P体外增殖。β-As可上调E-cadherin的表达,下调N-cadherin、Vimentin的表达,并抑制其体外迁移侵袭能力。β-As可通过剂量依赖的方式上调LC3-Ⅱ、p-AMPK表达,下调p-mTOR、p-S6K的表达,而对总的AMPK、mTOR表达水平无显著影响。体内实验发现β-As可抑制肾癌细胞增殖。结论β-细辛醚通过自噬依赖性AMPK/mTOR信号通路对肾癌细胞的生长增殖、迁移侵袭及EMT进行抑制,在肾透明细胞癌尤其是进展期肾癌方面具有一定的临床转化潜能。

β-细辛醚通过抑制TRPV4的表达缓解谷氨酸诱导的Ca^(2+)超载

谷氨酸处理会导致Ca^(2+)超载,瞬时受体电位香草素受体4(transient receptor potential vanilloid 4,TRPV4)在其中的作用及可能机制尚不清楚。β-细辛醚能快速透过血脑屏障,对兴奋性毒性具有较强的神经保护作用。文章以高分化的PC12细胞为研究对象,探究β-细辛醚(15、30、60μmol/L)预处理4 h,40 mmol/L谷氨酸处理实时记录对PC12细胞Ca^(2+)浓度的影响,采用钙成像技术检测Ca^(2+)浓度的变化;采用实时荧光定量聚合酶链式反应(polymerase chain reaction,PCR)、Western Blot及免疫荧光技术检测TRPV4的mRNA和蛋白的表达;采用Lipofectiamine 2000脂质体实验转染TRPV4-siRNA和pEX-3-TRPV4,观察沉默和过表达TRPV4对谷氨酸引起Ca^(2+)超载的影响。结果表明:与正常对照组相比,谷氨酸处理5 min可诱导Ca^(2+)超载,显著提高TRPV4的mRNA和蛋白的表达;与模型组相比,β-细辛醚能够剂量依赖性地降低谷氨酸诱导的Ca^(2+)超载和TRPV4的表达;沉默TRPV4抑制细胞Ca^(2+)超载;过表达TRPV4则部分逆转β-细辛醚抑制谷氨酸诱导的Ca^(2+)超载。该研究证明,谷氨酸处理PC12细胞5 min通过上调TRPV4的表达诱导Ca^(2+)超载,β-细辛醚作为TRPV4的拮抗剂,是一种潜在的抑制兴奋性毒性的药物。

一测多评法测定石菖蒲中β-细辛醚、α-细辛醚的含量

目的建立一测多评法同时测定石菖蒲β-细辛醚、α-细辛醚的含量。方法选用色谱柱Agilent Eclipse XDB C_(18)(5μm,4.6 mm×150 mm);流动相:乙腈-0.05%磷酸水,梯度洗脱。以α-细辛醚为内标,计算β-细辛醚的相对校正因子,测定其含量。结果β-细辛醚、α-细辛醚的R^(2)均为0.9999,表明两成分进样浓度在相应范围内具有良好的线性关系。β-细辛醚和α-细辛醚的平均加样回收率分别为98.69%和100.24%,RSD分别为2.04%和2.06%。一测多评法所得结果与外标法无显著差异。结论该方法快速简便、重复性好,具有良好的可行性,可用于石菖蒲的质量控制。

不同厂家细辛脑注射液的质量分析

目的为加强对细辛脑注射液的监管,保障人民的临床用药安全,故对市场现行流通使用的细辛脑注射液进行抽样检测。方法本文依照国家食品药品监督管理总局批准的国家药品标准,考察了本机构抽样的26批次细辛脑注射液的质量状况,完成了该品种性状、鉴别、pH值、颜色、有关物质、装量、可见异物及含量测定的项目评价。结果抽检的26批次细辛脑注射液依标准检测,各项目均符合规定。结论评价该品种整体质量较好,但考察到该品种有见光降解的性质,建议进一步优化生产、使用条件,减少曝光时长,避免杂质生成。

GC-MS建立石菖蒲挥发油特征指纹图谱方法学研究

目的 :建立石菖蒲挥发油GC MS分析色谱条件 ,初步拟定挥发油指纹特征图谱指标成分群。方法 :采用GC MS法分析 10批石菖蒲挥发油化学成分。结果 :在进样口温度 2 5 0℃ ,接口温度 2 30℃ ,载气流速 1.3mL·min-1,柱压 80kPa ,电离电压 1.4kV ,升温速率 3℃·min-1的色谱条件下 ,石菖蒲挥发油主成分可达到较好分离 ;挥发油主要含有甲基丁香酚 (2 .13% )、顺式甲基异丁香酚 (4 .4 8% )、反式甲基异丁香酚 (0 .82 % )、γ 细辛醚 (4 .5 1% )、β 细辛醚 (6 6 .15 % )、α 细辛醚 (6 .35 % )等 6个特征成分 ;以此 6个主要共有峰为评价指标 ,GC MS色谱条件的精密度、稳定性、重现性良好。结论 :方法准确可靠 ,重复性好 。

β、α细辛醚及石菖蒲挥发油对支气管哮喘的药效对比观察

目的对比研究β、α细辛醚及石菖蒲挥发油对支气管哮喘的药效作用。方法用卵蛋白(OA)雾化吸入致敏法复制豚鼠哮喘模型,造模7 d,再喷雾给药7 d后,喷入OA引喘,记录豚鼠哮喘发作潜伏期和跌倒潜伏期;利用豚鼠离体气管片,观察记录药物对气管平滑肌的张力的影响。结果β-细辛醚、α-细辛醚及挥发油都有延长模型豚鼠哮喘发作潜伏期和跌倒潜伏期的作用;均能拮抗组胺和乙酰胆碱松驰豚鼠气管平滑肌。结论β、α细辛醚及挥发油都有一定的抑制模型豚鼠哮喘发作的作用,三者都有对抗组胺或乙酰胆碱所致气管平滑肌收缩的作用。提示β、α细辛醚及石菖蒲挥发油都有一定的平喘作用。

α-细辛脑的抗惊厥、抗癫痫作用及其机制研究

目的研究α-细辛脑的抗惊厥、抗癫痫作用机制。方法预先给予小鼠α-细辛脑腹腔注射,30min后制作癫痫模型,对小鼠脑部的ATP酶、抗氧化指标及氨基酸含量的变化进行研究,探讨其抗惊厥、抗癫痫作用机制。结果α-细辛脑能明显降低谷氨酸/γ-氨基丁酸的比值,增强抗氧化能力及ATP酶的活力,与模型组比较差异有统计学意义(P<0.01)。结论α-细辛脑抗惊厥、抗癫痫的作用机制可能与其清除自由基,维持小鼠大脑中的兴奋/抑制系统及Na+、K+、Ca2+、Mg2+的动态平衡有关。

石菖蒲及其有效成分α-细辛醚对癫痫幼鼠脑海马神经元凋亡的影响

目的探讨石菖蒲及其有效成分α-细辛醚对戊四氮(PTZ)诱发的幼鼠癫痫发作所激发的海马区神经元凋亡的影响。方法利用光电镜技术观察癫痫幼鼠海马神经元的病理改变,TUNEL法检测凋亡细胞,免疫组织化学法检测Bax和Bcl-2的表达情况。结果致痫对照组癫痫幼鼠海马CA1和CA3区大量神经元凋亡;药物治疗后凋亡细胞数明显减少(P<0.01);PTZ致痫各组幼鼠海马CA1和CA3区Bcl-2和Bax阳性细胞数量较正常对照组均有明显增加(P<0.01)。其中,苯巴比妥钠组、石菖蒲组、α-细辛醚组Bcl-2阳性细胞数量增加较致痫对照组显著(P<0.01);Bax阳性细胞数量各致痫组之间无显著性差异。正常对照组Bcl-2/Bax的值约为6.0;致痫对照组约为0.7;其余3组均约为1.0。结论石菖蒲和α-细辛醚可能通过增强Bcl-2表达,抑制幼鼠癫痫发作激发的海马神经元凋亡。

HPLC测定石菖蒲药材中β-细辛醚、α-细辛醚的含量

目的 :测定石菖蒲药材中 β 细辛醚、α 细辛醚的含量。 方法 :色谱条件 :ODSC18分析柱 ( 15 0mm× 4 .6mm ,5 μm) ,流动相为甲醇 水 ( 6∶4 ) ,10 0 0mL中加入磷酸二氢钾 1.4 g ,十二烷基磺酸钠 1.2 g ,检测波长 2 5 7nm :流速 1.0mL·min-1室温操作。结果 :β 细辛醚、α 细辛醚平均回收率分别为 99.0 2 % (RSD =1.0 3% ) ,10 1.2 6 % (RSD =3.5 7% )。 结论 :方法快速准确 ,样品处理简便 。

石菖蒲对缺血再灌注脑损伤大鼠神经细胞凋亡的影响

目的 :观察石菖蒲对缺血再灌注脑损伤大鼠神经细胞凋亡影响的有效部位。方法 :提取石菖蒲 (去油水提液、含油水提液、挥发油、β -细辛醚 ) ,灌胃给药 7d ,1次 /d ,观察大鼠脑皮质和海马神经细胞凋亡的情况。结果 :β -细辛醚有明显抑制大鼠脑皮质神经细胞凋亡的作用 ,石菖蒲组分 (含油水提液、挥发油、β -细辛醚 )也有减少大鼠海马神经细胞凋亡的作用。β -细辛醚能抑制大鼠脑皮质和海马神经细胞Bax基因表达。石菖蒲挥发油和 β -细辛醚能增强大鼠脑皮质神经细胞Bcl -X基因的表达。结论 :石菖蒲挥发油尤其是 β

石菖蒲挥发油及β-细辛醚对心血管的保护作用

目的研究石菖蒲挥发油、β-细辛醚对心血管的保护作用。方法采用动脉粥样硬化试验、高粘血症试验以及心肌缺血试验,观察石菖蒲挥发油、β-细辛醚对动脉粥样硬化大鼠血脂、高粘血症大鼠血液流变学、异丙肾上腺素致心肌缺血大鼠内皮素(ET)、一氧化氮(NO)及心肌组织坏死的影响。结果石菖蒲挥发油、β-细辛醚能明显降低动脉粥样硬化大鼠血脂(CHOL及LDL-C);能改善高粘血症大鼠的血液流变性;能降低心肌缺血大鼠ET水平、提高NO的含量,降低心肌组织损伤程度和坏死率。结论石菖蒲挥发油、β-细辛醚对心血管有明显的保护作用。

石菖蒲及其有效成分α-细辛醚对癫痫幼鼠运动行为和记忆功能的影响

目的探讨石菖蒲及其成分α-细辛醚对戊四氮(PTZ)诱发的实验性癫痫幼鼠运动行为和空间学习记忆能力的影响。方法W istar幼鼠随机分为正常对照组(NC)和致痫模型组(A)、苯巴比妥钠组(B)、石菖蒲组(C)、α-细辛醚组(D),以ip PTZ 60 m g/kg建立癫痫模型,各组ig给药。动态观察各组幼鼠在斜板试验、悬吊试验、自主活动试验中行为运动的变化以及在M orris水迷宫试验中空间学习记忆能力的改变。结果A组动物的转体能力、悬吊能力、自主活动能力和空间学习记忆能力明显下降,与惊厥发作严重程度呈正相关,B组次之,与其他各组比较差异均显著(P<0.05)。而C组、D组各项结果与正常对照组比较差异不显著。结论PTZ诱发的幼鼠多次惊厥发作损害其行为运动能力和空间学习记忆能力,与苯巴比妥钠相比,α-细辛醚和石菖蒲能够有效地逆转PTZ所致的损害。

α-细辛脑近10年研究概述

α-细辛脑的早期文献报道可追溯至20世纪60年代,因其对哮喘、支气管炎和癫痫等有较好的疗效而受到关注。然而伴随着现代社会患有上述疾病的病人数量的增加,α-细辛脑的作用日益突显,因此就很有必要对其近年来的研究进展有所了解。作者对α-细辛脑1996年以后的研究进展进行了概述,主要包括剂型与技术的发展、药动学、生物利用度、药理、毒理以及临床应用6个方面。