简介：Inthepresentstudy,aseriesofnovelnitricoxide-hydrogensulfidereleasingderivativesof(S)-3-n-butylphthalide((S)-NBP)weredesigned,synthesized,andevaluatedaspotentialantiplateletagents.CompoundNOSH-NBP-5displayedthestrongestactivityininhibitingthearachidonicacid(AA)-andadenosinediphosphate(ADP)-inducedplateletaggregationinvitro,with3.8-and7.0-foldmoreeffectivenessthan(S)-NBP,respectively.Furthermore,NOSH-NBP-5couldreleasemoderatelevelsofNOandH2S,whichwouldbebeneficialinimprovingcardiovascularandcerebralcirculation.Moreover,NOSH-NBP-5couldrelease(S)-NBPwhenincubatedwithratbrainhomogenate.Inconclusion,thesefindingsmayprovidenewinsightsintothedevelopmentofnovelantiplateletagentsforthetreatmentofthrombosis-relatedischemicstroke.

简介：目的马尾藻类海草wightiiGreville是属于有大约200种类的Sargassaceae家庭的海洋的棕色的水藻。整个干燥植物粉末的ethanolic摘录包含了众多的phytoconstituents，包括flavonoids。学习在老鼠集中于马尾藻类海草wightii的anticancer活动。在二剂量的马尾藻类海草wightii(EESW)的ethanolic摘录铺平的方法被用来用DAL房间线在老鼠检验anticancer活动导致癌症。身体重量，可行、不能生存的肿瘤房间计数，吝啬的幸存时间，寿命的增加，和hematological参数为EESW的anticancer活动被观察。在老鼠的DAL房间的intraperitoneal接种显著地增加了的结果癌症房间计数。在在对待EESW的组癌症动物观察的癌症细胞数字的减少显示测试药在肿瘤细胞增长上有重要禁止的效果。有EESW的治疗也在肿瘤重量显示出重要减少，并且因此增加了对待DAL的老鼠的lifespan。另外，EESW管理显著地在对待DAL的老鼠恢复了hematological参数。现在的学习结果建议摘录提议的那个政府的结论提高了抗氧化剂潜力。因此，EESW拥有anticancer活动，这能从这研究被结束。

简介：Inthepresentstudy,theeffectsofPleurotusnebrodensispolysaccharide(PN-S)ontheimmunefunctionsofimmunosuppressedmiceweredetermined.Theimmunosuppressedmousemodelwasestablishedbytreatingthemicewithcyclophosphamide(40mg/kg/2d,CY)throughintraperitonealinjection.TheresultsshowedthatPN-SadministrationsignificantlyreversedtheCY-inducedweightloss,increasedthethymicandsplenicindices,andpromotedproliferationofTlymphocyte,Blymphocyte,andmacrophages.PN-SalsoenhancedtheactivityofnaturalkillercellsandincreasedtheimmunoglobulinM(IgM)andimmunoglobulinG(IgG)levelsintheserum.Inaddition,PN-Streatmentsignificantlyincreasedthephagocyticactivityofmouseperitonealmacrophages.PN-Salsoincreasedthelevelsofinterleukin-6(IL-6),tumornecrosisfactor-α(TNF-α),interferon-γ(INF-γ),andnitricoxide(NOS)insplenocytes.qRT-PCRresultsalsoindicatedthatPN-SincreasedthemRNAexpressionofIL-6,TNF-α,INF-γ,andnitricoxidesynthase(iNOS)inthesplenocytes.TheseresultssuggestthatPN-Streatmentenhancestheimmunefunctionofimmunosuppressedmice.Thisstudymayprovideabasisfortheapplicationofthisfungusinadjacentimmunopotentiatingtherapyagainstcancerandinthetreatmentofchemotherapy-inducedimmunosuppression.

简介：Cancerisamajorhealthconcernandleadingburdenoneconomyworldwide.Anincreasingeffortisdevotedtoisolationanddevelopmentofplant-deriveddietarycomponentsaseffectivechemo-preventiveproducts.Phytochemicalcompoundsfromnaturalresourcessuchasfruitsandvegetablesareresponsiblefordecreasingtheriskofcertaincancersamongtheconsumingpopulations.Apigenin,aflavonoidphytochemicalfoundinmanykindsoffruitsandvegetables,hasbeenshowntoexertsignificantbiologicaleffects,suchasanti-oxidant,anti-inflammatoryandmostparticularlyanti-neoplasticproperties.Thisreviewisintendedtosummarizethemostrecentadvancesintheanti-proliferativeandchemo-preventiveeffectsofapigeninindifferentcancermodels.Analysisofthedatafromthestudiedcancermodelshasrevealedthatapigeninexertsitsanti-proliferativeeffectsthroughmultipleandcomplexpathways.Thisguidedustodiscoversomecontroversialresultsabouttheexactroleofcertainmolecularpathwayssuchasautophagyintheanticancereffectsofapigenin.Further,therewerecumulativepositiveevidencessupportingtheinvolvementofcertainpathwayssuchasapoptosis,ROSandDNAdamageandrepair.Apigeninpossessesahighpotentialtobeusedasachemosensitizingagentthroughtheup-regulationofDR5pathway.Accordingtothesepreclinicalfindingswerecommendthatfurtherrobustunbiasedstudiesshouldconsiderthepossibleinteractionsbetweendifferentmolecularpathways.

简介：AIM:ToevaluatetheeffectofOcimumsanctumleafextractonthedietarysupplementationinthetransgenicDrosophilamodelofParkinson’sdisease.METHOD:TheeffectofOcimumsanctumleafextractwasstudiedonthetransgenicDrosophilamodeloffliesexpressingnormalhumanalphasynuclein(h-αs)intheneurons.O.sanctumextractatfinalconcentrationsof0.0428×10-4,0.87×10-4,and1.85×10-4g·mL-1ofdietwereestablishedandtheflieswereallowedtofeedfor21days.Theclimbingassayandlipidperoxidationweretakenasparametersforthestudy.RESULTS:ThesupplementationofO.sanctumextractshowedadose-dependentsignificantdelayinthelossofclimbingabilityandreductioninoxidativestressinthebrainofPDmodelflies.CONCLUSION:TheresultsofthepresentstudyshowedthattheO.sanctumextractispotentinreducingthePDsymptomsintransgenicDrosophilamodel.

简介：

简介：AnovelPleurotusnebrodensispolysaccharide(PN-S)waspurifiedandcharacterized,anditsimmune-stimulatingactivitywasevaluatedinRAW264.7macrophages.PN-SinducedtheproliferationofRAW264.7cellsinadose-dependentmanner,asdeterminedbytheMTTassay.AfterexposuretoPN-S,thephagocytosisofthemacrophageswassignificantlyimproved,withremarkablechangesinmorphologybeingobserved.FlowcytometricanalysisdemonstratedthatPN-SpromotedRAW264.7cellstoprogressthroughSandG2/Mphases.PN-Streatmentenhancedtheproductionsofinterleukin-6(IL-6),nitricoxide(NO),interferongamma(INF-γ),andtumornecrosisfactor-α(TNF-α)inthemacrophages,withup-regulationofmRNAexpressionsofinterleukin-6(IL-6),induciblenitricoxidesynthase(iNOS),interferongamma(INF-γ)andtumornecrosisfactor-α(TNF-α)beingobservedinadose-dependentmanner,asmeasuredbyqRT-PCR.Inconclusion,theseresultssuggestthatthepurifiedPN-Scanimproveimmunitybyactivatingmacrophages.

简介：目的：建立丹参鲜药材预处理方法并测定鲜药材中丹酚酸B的含量。方法：通过使用不同方式提取丹参鲜药材，比较各提取液图谱差异，对丹参鲜药材提取的方式、溶剂用量等进行考察，并测定6批鲜丹参的丹酚酸B的含量。结果：丹参鲜药材切段后回流提取或在特定溶媒中粉碎可提取出丹酚酸B；确定丹参鲜药材预处理方法为：药材切段，加入25倍甲醇，粉碎，超声30min。结论：丹参鲜药材中含有丹酚酸B，在提取前不能直接粉碎，否则不能提取出丹酚酸B。

简介：TagetonesA(1)andB(2),twonewmonocyclicditerpenoidswereisolatedfromthen-hexanefractionoffreshflowersofTagetesminutaL.(Asteraceae).Theirstructureswereestablishedbymultiplespectroscopicmethods(IR,HR-ESI-MS,and1D-,and2D-NMR),inadditiontocomparisonwithliteraturedata.Compound1showedcytotoxicactivitytowardsMCF7andA549cancercellswithIC_(50)valuesbeing4.68and4.24μmol·L~(-1),respectively,comparedtodoxorubicin(IC_(50)0.13and1.12μmol·L~(-1),respectively).Compound2alsoexhibitedsignificantactivityagainstHCT116cancercells(IC_(50),6.30μmol·L~(-1)).

简介：目的：探讨银杏内酯B衍生物（XQ）抗血小板聚集的作用及其机制。方法：运用比浊法测定静脉给药后PAF诱导的家兔血小板聚集作用,采用放射配基结合试验观察[3H]PAF与兔血小板受体特异性结合的作用。结果：XQ1.95、3.90、7.80mg·kg^-1对家兔血小板聚集的抑制率分别为29.8%、43.5%和55.2%（P〈0.01）,PAF与家兔血小板膜上PAF受体结合的平衡解离常数（KD）=8.31×10^-5mmol·L^-1,最大结合容量（BMAX）=2.62×10^-9mmol/10^8血小板。XQ和银杏内酯B（GB）可抑制[3H]PAF与兔血小板受体的特异性结合,抑制常数（Ki）分别为8.72×10^-8、7.13×10^-7mol·L^-1。结论：XQ具有抗血小板聚集作用,Ki值接近,其拮抗PAF受体的能力与GB相似。

简介：Schisandrachinensis,atraditionalChinesemedicine(TCM),hasbeenusedtotreatsleepdisorders.Zebrafishsleep/wakebehavioralprofilingprovidesahigh-throughputplatformtoscreenchemicals,buthasneverbeenusedtostudyextractsandcomponentsfromTCM.Inthepresentstudy,theethanolextractofSchisandrachinensisanditstwomainlignincomponents,schisandrinandschisandrinB,werestudiedinzebrafish.Wefoundthattheethanolextracthadbidirectionalimprovementinrestandactivityinzebrafish.SchisandrinandschisandrinBwerebothsedativeandactivecomponents.WepredictedthatschisandrinwasrelatedtoserotoninpathwayandtheenthanolextractofSchisandrachinensiswasrelatedtoseoroninanddomapinepathwaysusingadatabaseofzebrafishbehaviors.ThesepredictionswereconfirmedinexperimentsusingCaenorhabditiselegans.Inconclusion,zebrafishbehaviorprofilingcouldbeusedasahigh-throughputplatformtoscreenneuroactiveeffectsandpredictmolecularpathwaysofextractsandcomponentsfromTCM.

简介：Ginkgoditerpenelactonesmeglumineinjection(GDLI)isacommerciallyavailableproductusedforneuroprotection.However,thepharmacokineticpropertiesoftheprototypesandhydrolyzedcarboxylicformsoftheprimarycomponentsinGDLI,i.e.,ginkgolideA(GA),ginkgolideB(GB),andginkgolideK(GK),haveneverbeenfullyevaluatedinbeagledogs.Inthiswork,asimple,sensitive,andreliablemethodbasedonultra-fastliquidchromatography-tandemmassspectrometry(UFLC-MS/MS)wasdeveloped,andtheprototypesandtotalamountsofGA,GB,andGKweredeterminedinbeagledogplasma.Theplasmaconcentrationsofthehydrolyzedcarboxylicformswerecalculatedbysubtractingtheprototypeconcentrationsfromthetotallactoneconcentrations.Forthefirsttime,thepharmacokineticsofGA,GB,andGKwerefullyassessedinthreeforms,i.e.,theprototypes,thehydrolyzedcarboxylicforms,andthetotalamounts,afterintravenousadministrationofGDLIinbeagledogs.Itwasshownthatginkgolidesprimarilyexistedinthehydrolyzedforminplasma,andtheratioofhydrolysatestoprototypeformsofGAandGBdecreasedgraduallytoahomeostaticratio.AllofthethreeformsofthethreeginkgolidesshowedlinearexposureofAUCtothedosages.GA,GB,andGKshowedaconstanthalf-lifeapproximately2.7,3.4,and1.2h,respectively,whichwereconsistentfortheformsatthreedoselevels(0.3,1.0,and3.0mg·kg~(-1))andafteraconsecutiveinjectionofGDLIfor7days(1.0mg·kg~(-1)).

简介：体外实验证明,祁州漏芦乙醇提取物能显著抑制大鼠大脑线粒体B型单胺氧化酶(MAO—B)的活性,而对肝MAO—B活性的抑制作用仅为对脑抑制作用的50％左右。酶促动力学研究表明,祁州漏芦对MAO—B活性的抑制作用属竞争性抑制。

简介：目的：研究瑞香狼毒的化学成分。方法：采用硅胶柱层析的方法分离和纯化化合物，根据理化性质和波谱方法鉴定化合物结构。结果：从瑞香狼毒中分离得到两个双香豆素类化合物：7-羟基-5，6-二甲氧基-3-[（2-羰基-2H—1-苯骈吡喃-7）氧取代]-2H—1-苯骈吡喃-2-酮，命名为异西瑞香素B（1）和西瑞香素（2）。结论：化合物1为新化合物。

简介：目的：探讨银杏内酯B对谷氨酸诱导的人神经母细胞瘤（SH-SY5Y）细胞凋亡的保护作用及其机制。方法：用2mmol/L谷氨酸诱导SH-SY5Y细胞凋亡建立模型,以不同浓度的银杏内酯B（10、50和250μmol/L）进行保护,MTT比色法检测细胞存活率;Hoechst33258染色法观察药物作用后细胞凋亡的形态学变化;流式细胞仪检测细胞凋亡率;Fura-2/AM双波长荧光法测定细胞内钙离子浓度;Westernblot检测线粒体和胞浆中CytC蛋白的表达。结果：2mmol/L谷氨酸作用SH-SY5Y细胞24h后细胞存活率为0.721±0.013,与正常组相比明显降低;细胞核固缩裂解,呈凋亡特征性改变;细胞凋亡率为（13.27±0.08）%、细胞内钙离子浓度为359±11nmol/L,均明显升高。与凋亡组相比,银杏内酯B（10、50、250）μmol/L保护组细胞存活率分别为0.768±0.014、0.819±0.013、0.897±0.010,均明显升高;细胞核核固缩裂解减少,形态有所改善;细胞凋亡率分别为11.33±0.57、7.02±0.47、5.85±0.24;细胞内钙离子浓度为302±9nmol/L、243±9nmol/L、186±8nmol/L,均明显降低;Westernblot结果显示,与凋亡组相比银杏内酯B保护组可以显著减少细胞线粒体以及胞浆中CytC蛋白的含量。结论：银杏内酯B对谷氨酸诱导的SH-SY5Y细胞凋亡具有保护作用,其机制可能与银杏内酯B降低了细胞内钙离子的浓度及阻断了CytC从线粒体释放入胞浆中有关。

简介：目的：研究莪术醇对小鼠皮肤黑色素瘤B16-F10细胞凋亡的影响。方法：采用四氮唑盐（MTT）法检测不同浓度的莪术醇对B16-F10细胞增殖的影响;并用光学显微镜观察不同浓度的莪术醇对B16-F10细胞状态的影响;通过流式FITC-AnnexinV/PI双染法,检测不同浓度的莪术醇对细胞凋亡率的影响;通过间接荧光标记法检测不同浓度的莪术醇对细胞内活性氧水平的影响;通过罗丹明123染色,检测不同浓度的莪术醇对细胞内线粒体膜电位的影响。结果：不同浓度莪术醇处理B16-F10细胞24、48、72h,均可呈浓度、时间依赖性的抑制细胞增殖;显微镜观察到莪术醇可以引起细胞形态变圆,漂浮等细胞死亡现象。12.5、25、50、100μg/ml莪术醇作用48h后,诱导的细胞凋亡率分别为（19.5±3.4）%、（35.1±2.8）%、（45.9±4.1）%、（60.5±1.9）%,与对照组具有显著性统计学差异;诱导的细胞内活性氧水平的百分率分别为（6.9±1.8）%、（12.4±2.1）%、（20.9±3.1）%、（29.1±3.5）%,与对照组相比具有显著统计学差异。引起的线粒体膜电位的百分比分别为（40±1.1）%、（33.7±4.2）%、（27.3±2.5）%、（17.9±2.9）%,与空白对照组相比具有统计学差异。结论：莪术醇可以抑制B16-F10的增殖并促进细胞凋亡,其凋亡机制可能与细胞内活性氧组分的产生以及线粒体膜电位的变化有关。

简介：目的：探讨桂枝挥发油对核因子κB信号通路的影响。方法：制作LPS诱导的大鼠急性肺损伤模型,通过桂枝挥发油治疗后,采用ELISA法检测肺组织细胞核蛋白NF-κBP65含量和肺组织溶浆中磷酸化IκB-α、IL-1β的含量。结果：正常大鼠肺组织中NF-κBP65、磷酸化IκB-α和IL-1β仅有微量表达,LPS尾静脉注射后6h各其表达显著增高,桂枝挥发油高、中、低剂量组NF-κBP65、磷酸化IκB-α和IL-1β的含量均较模型组显著降低。结论：桂枝挥发油对急性肺损伤时高度活化的核因子κB信号通路有显著的抑制或拮抗作用,提示核因子κB信号通路是桂枝挥发油抗炎作用的主要靶点之一。

简介：

简介：目的:研究大黄素与姜黄素和苦参素的配伍组合对柯萨奇病毒B3感染小鼠的体内病毒抑制作用。方法:建立CVB3感染的小鼠模型24h后,用大黄素配伍姜黄素、苦参碱的复方药物1.0g/kg、0.5g/kg、0.25g/kg三个剂量组连续15d进行治疗,观察感染小鼠的治愈率和死亡率,并取小鼠的脏器进行组织病理学观察、病毒分离和病毒滴度测定、免疫荧光法检测和RT-PCR测定病毒核酸。结果:经复方大黄素治疗后的染病小鼠发病症状明显减轻,死亡率下降;治疗组的小鼠心、肺、肾等组织中病毒滴度均低于阳性对照组和模型对照组;治疗组的小鼠心、肺、肾等组织切片的荧光反应不明显,荧光点显著少于阳性对照组和模型对照组;从小鼠脏器中提取病毒mRNA经RT-PCR、凝胶电泳分析,在0.5、1g/kg组中未检测出病毒核酸。实验还发现提取物组合比纯化合物组合毒性要低,疗效也好。结论:大黄素配伍姜黄素和苦参碱后能抑制CVB3病毒在小鼠心、肺、肾等脏器中的增殖,对小鼠脏器具有较强的保护作用。

简介：目的：观察四逆汤对异丙肾上腺素（ISO）诱导大鼠心肌肥厚的干预作用,并从炎症反应的角度探究其可能的作用机制。方法：选取36只SD大鼠随机分为正常组、模型组、卡托普利组（0.1g/kg·d）和四逆汤组（3.8g/kg·d）,每组9只。除正常组外,模型组、卡托普利组和四逆汤组均皮下注射ISO（5mg/kg·d）,制备心肌肥厚模型。给药4周后,称重并测量血流动力学。称量心脏重量及左心室重量并计算全心重量指数、左心室重量指数;苏木精-伊红（HE）染色观察心肌细胞肥大程度并测量心肌细胞跨核最短直径及横截面积;Masson染色观察并测量心肌胶原纤维沉积的情况;酶联免疫吸附试验检测大鼠血清中肿瘤坏死因子α（TNF-α）和白细胞介素6（IL-6）的表达水平;Westernblot测定Toll样受体4（TLR4）、髓样分化因子（MyD88）、核因子-κB亚基p65（NF-κBp65）、核因子κB抑制蛋白α（IκBα）的蛋白表达;QRT-PCR测定TLR4mRNA和肥大基因心房钠尿肽（ANP）和脑钠尿肽（BNP）mRNA表达。结果：与正常组相比,模型组大鼠心功能受损、心肌细胞肥大、胶原纤维增生;心脏重量、左心室重量、全心重量指数、左心室重量指数及心肌细胞跨核直径、横截面积显著增加;炎症因子TNF-α和IL-6表达水平增加;TLR4、MyD88和核内的NF-κBp65蛋白表达上调,而IκBα蛋白表达下调;TLR4mRNA和心脏肥大标记基因ANP和BNPmRNA表达上调。与模型组相比,四逆汤（3.8g/kg）组心功能改善,心肌细胞肥大程度减轻,胶原纤维增生减少;心脏重量、左心室重量、全心重量指数、左心室重量指数和心肌细胞跨核直径及横截面积显著降低;炎症因子TNF-α及IL-6的表达水平降低;同时TLR4、MyD88和核内的NF-κBp65蛋白表达减少,IκBα蛋白表达增加;ANP、BNP和TLR4mRNA表达水平下调。结论：四逆汤可以抑制由异丙肾上腺素诱导所致的病理性心肌肥厚,