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: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:探讨不同光照强度和栽培模式下金线莲形态、产量、主要药用成分黄酮和多糖的动态变化规律,确定金线莲适宜栽培模式和最佳采收时间。方法:以一次性成苗有机培养金线莲植株为材料,调节不同光照强度,采用林下仿生栽培和大棚种植2种不同栽培模式下大面积种植,测定不同栽培模式金线莲多糖含量和黄酮含量的变化,分析金线莲栽培过程中活性成分累积规律。结果:光照强度为3000lx时,植株的株高、叶片大小、茎粗、鲜重和干重均达到最大;两种模式(大棚和林下)栽培苗随着栽培月龄的增长,多糖含量先减少后增加,黄酮含量则逐渐增加。种植6月后,以林下仿生态种植的金线莲在形态和生物量都显著优于大棚种植,多糖含量比大棚种植高2.9mg,但黄酮含量差异不显著。结论:不同的光照强度和栽培模式对金线莲的生长、黄酮和多糖的变化有显著影响,金线莲的适宜采收期为林下栽培6个月以上。
简介:目的:研究滇越金线兰等剂量的总膏及其各极性部位对高脂饮食联合STZ诱导的大鼠模型血糖、血脂和肾功能的影响。方法:对滇越金线兰的总膏用不同极性的溶剂萃取,得到石油醚部位、乙酸乙酯部位、正丁醇部位和水部位。测定总膏和各极性部位对高脂饮食联合STZ诱导的模型大鼠给药后血浆的总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、肌酐(CRE)和尿素氮(BUN)。肾脏切片,进行病理学检查。结果:滇越金线兰的乙酸乙酯部位(4g/蚝)可以显著降低模型大鼠的血糖、改善血脂代谢,减少肌酐和尿素氮。各给药部位对糖尿病并发的早期肾损害有改善作用。结论:乙酸乙酯部位为滇越金线兰降血糖、降血脂和改善糖尿病肾病并发症的主要活性部位。