简介：Thymoquinone(TQ),anactivecomponentderivedfromthemedialplantNigellasativa,hasbeenusedformedicalpurposesformorethan2000years.RecentstudieshavereportedthatTQblockedangiogenesisinanimalmodelandreducedmigration,adhesion,andinvasionofglioblastomacells.WehaverecentlyshownthatTQcouldexhibitapotentcytotoxiceffectandinduceapoptosisinmouseneuroblastoma(Neuro-2a)cells.Inthepresentstudy,TQtreatmentmarkedlydecreasedtheadhesionandmigrationofNeuro-2acells.TQdown-regulatedMMP-2andMMP-9proteinexpressionandmRNAlevelsandtheiractivities.Furthermore,TQsignificantlydown-regulatedtheproteinexpressionoftranscriptionfactorNF-κB(p65)butnotsignificantlyalteredtheexpressionofN-Myc.Takentogether,ourdataindicatedthatTQ'sinhibitoryeffectonthemigrationofNeuro-2acellswasmediatedthroughthesuppressionofMMP-2andMMP-9expression,suggestingthatTQtreatmentcanbeapromisingtherapeuticstrategyforhumanmalignantneuroblastoma.

简介：目的：研究蜀葵与药蜀葵特征DNA序列的差异，为鉴定维吾尔药材蜀葵及药蜀葵提供依据。方法：采用试剂盒法提取蜀葵及药蜀葵基因组DNA，PCR扩增ITS2片段，双向测序，应用Mega6．0软件分析序列，计算种内及种间遗传距离，构建NJ鉴别树。结果：蜀葵ITS2序列长度为233bp，与药蜀葵231—232bp存在差异；蜀葵种内最大K2P遗传距离为0．004，药蜀葵种内K2P遗传距离为0，蜀葵与药蜀葵种间平均K2P遗传距离为0．0732；NJ树结果表明蜀葵与药蜀葵均单独聚为一支。结论：ITS2序列可用于维吾尔药材蜀葵真伪鉴定的DNA条形码，为保障临床正确用药提供了新的方法。

简介：分析Ca（NO3）2对低温胁迫下酸橙幼苗抗逆生理指标的影响,探讨Ca（NO3）2对酸橙幼苗低温胁迫调控的可行性。该实验以盆栽酸橙幼苗为材料,叶面喷施5、10、15、20、25mmol·L^-1的Ca（NO3）2溶液,置于4℃/0℃（昼/夜）,光照为600μmol·m^-2·s^-1的人工气候箱内,以常温25℃喷施蒸馏水和低温胁迫下喷施蒸馏水为对照,处理3d后,测定酸橙幼苗POD、SOD和CAT酶活性、可溶性蛋白含量、脯氨酸含量、MDA含量、相对电导率和叶绿素含量。结果表明,低温胁迫下叶面喷施Ca（NO3）2溶液可提高酸橙幼苗叶片POD、SOD和CAT酶活性,显著提高可溶性蛋白和脯氨酸等渗透调节物质的含量,降低细胞MDA含量和相对电导率,减缓叶绿素下降的趋势,提高了叶片光合效率。叶面喷施一定浓度Ca（NO3）2溶液可减轻低温胁迫对酸橙幼苗叶片的伤害。

简介：目的：采用ITS2条形码对维吾尔药材药西瓜及其误用品栝楼、罗汉果进行分子鉴定，以确保药材质量及临床疗效。方法：提取维吾尔药材药西瓜及其误用品栝楼、罗汉果的DNA，并对药材进行PCR扩增其ITS2（internaltranscribedspacer2）并双向测序，经CodonCodeAlingnerV3．0对其测序峰图进行校对拼接后，用MEGA6．05软件计算种内种间遗传距离K2P（kimura．2-parameter），并构建邻接系统聚类树NJ（neighbor-joingtree，NJTree）。结果：提取维吾尔药材药西瓜及误用品栝楼、罗汉果基因组DNA后，经检测具降解现象，但仍可通过PCR扩增获得三者的ITS2序列；药西瓜与误用品之间的K2P遗传距离远大于药西瓜种内遗传距离；NJ系统聚类树结果表明能将药西瓜与其误用品区分开来，单独聚为一类。结论：ITS2条形码可准确鉴别维吾尔药材药西瓜及其误用品，为药西瓜的质量和临床用药安全提供了鉴定依据。

简介：HyoscyamiSemen,thematuredriedseedofHyoscyamusnigerL.,haslongbeenusedasatraditionalChinesemedicinetotreathumandiseases.HyoscyamiSemenisfoundinlocalmarketsinChina.Inmarkets,sellersandbuyerscommonlyinadvertentlymixtheseedsofH.nigerwiththeseedsofrelatedspeciessuchasHygrophilasalicifolia(Vahl)Nees,AstragaluscomplanatusR.Br.,CuscutaaustralisR.Br.,CuscutachinensisLam.,andImpatiensbalsaminaL.becauseoftheirsimilarmorphologiesorsimilarnames.Thus,developingareliablemethodfordiscriminatingH.nigerseedsfromitsadulterantsisnecessarytoreduceconfusionandensurethesafeuseofHyoscyamiSemen.Thepresentstudywasdesignedtoevaluatetheefficiencyofhigh-resolutionmeltinganalysiscombinedwithDNAbarcoding(Bar-HRM)withinternaltranscribedspacer2todiscriminateH.niger.OurresultsshowthatBar-HRMsuccessfullyidentifiedtheadulterantsanddetectedtheproportionofH.nigerDNAextractwithinanadmixture.Inparticular,HRMdetectedH.nigerDNAextractinA.complanatusDNAextractatconcentrationsaslowas1%.Inconclusion,theBar-HRMmethoddevelopedinthepresentstudyforauthenticatingH.nigerisrapidandcost-effective.ItcanbeusedinthefuturetoguaranteethepurityofHyoscyamiSemenfortheclinicaluse.

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：观察甘草次酸对哮喘大鼠气道炎症、气道重塑及肺组织Casepase-3、Bax、Bcl-2表达的影响,探讨其抗哮喘机制。方法：将60只雄性大鼠随机分为正常对照组、哮喘模型组、地塞米松组及甘草次酸（200、100、50mg/kg）剂量组。以卵清蛋白加氢氧化铝致敏复制大鼠哮喘动物模型,病理观察甘草次酸对哮喘大鼠肺组织气道炎症浸润和气道重塑的影响;采用RT-PCR和Western-blot法检测哮喘大鼠肺组织Casepase-3、Bax及Bcl-2mRNA和蛋白表达。结果：与哮喘模型组比较,甘草次酸200mg/kg可减少哮喘大鼠肺组织炎症浸润,改善或逆转气道重塑;甘草次酸200、100mg/kg可上调哮喘大鼠肺组织Bax、Caspase-3mRNA和蛋白表达水平,下调Bcl-2mRNA和蛋白表达水平。结论：甘草次酸对哮喘大鼠气道炎症及气道重塑有较好的改善作用,其机制可能与上调促凋亡因子Bax、Caspase-3和下调抗凋亡因子Bcl-2有关。

简介：Marsdeniaetenacissimaeextract(MTE),commonlyknownasXiao-Ai-PinginChina,isatraditionalChineseherbmedicinecapableofinhibitingproliferationandmetastasisandboostingapoptosisinvariouscancercells.However,littleisknownaboutthecontributionofMTEtowardstumorangiogenesisandtheunderlyingmechanism.ThepresentstudyaimedtoevaluatetheeffectsofMTEontheproliferationandapoptosisofhumanumbilicalveinendothelialcells(HUVECs)andthemolecularism.3-(4,5-dimethylthiazol-2-yl)-5(3-carboxymethoxyphenyl)-2-(4-sulfopheny)-2H-tetrazolium,innersalt(MTS)andPI-stainedflowcytometryassaysrevealedthatMTEdose-dependentlyreducedtheproliferationofHUVECsbyarrestingcellcycleatSphase(P<0.05).AnnexinV-FITC/PI-stainedflowcytometryconfirmedthatMTE(160μL·mL-1)enhancedtheapoptosisofHUVECssignificantly(P<0.001).Real-timequantitativeRT-PCRandWesternblotanalysesshowedanincreaseinBaxexpressionandasharplydeclineinBcl-2expression;caspase-3wasactivatedsimultaneouslyinadose-dependentmanner(P<0.05).Furtherstudyobservedthedose-dependentdown-regulationofvascularendothelialgrowthfactor(VEGF)receptor-2(VEGFR-2),P2Y6receptor(P2Y6R),andchemokine(C-Cmotif)ligand2(CCL-2),alongwiththeactivationofPKCδandup-regulationofp53inadose-dependentmannerinMTE-treatedselectedcells(P<0.05).Collectively,theresultsfromthepresentstudysuggestedthatMTEsuppressedtheproliferationbyattenuatingCCL-2-mediatedVEGF/VEGFR2interactionsandpromotedtheapoptosisthroughPKCδ-inducedp53-dependentmitochondrialpathwayinHUVECs,supportingthatMTEmaybedevelopedasapotentanti-cancermedicine.