简介:目的:研究四逆汤及拆方水煎液对体外培养的缺血缺氧大鼠心肌细胞H9C2的保护作用。方法:利用厌氧培养盒构建厌氧环境,以D-Hanks液模拟缺血液,构建H9C2的缺血缺氧模型;将加有D-Hanks稀释过的四逆汤及拆方水煎液的H9C2置于厌氧盒中培养,MTT法测定H9C2的存活率;ELISA法测定细胞培养上清中肿瘤坏死因子-α(TNF-α)、肌酸激酶同工酶(CK-MB)的含量。结果:四逆汤及拆方加药组(四逆汤加药组、附子+干姜加药组、附子+甘草加药组、甘草+干姜加药组、甘草加药组、附子加药组、干姜加药组)在浓度均为5mg生药/ml时,与模型组比较均能提高H9C2的存活率;其中附子+干姜组(108.2±5.0)、四逆汤全方组(82.3±2.0)、附子组(78.4±10.0)均能明显提高缺血缺氧H9C2的存活率;细胞上清中CK-MB含量与TNF-α含量呈正相关(r=0.866),细胞存活率与TNF-α含量呈负相关(r=-0.0846)。结论:四逆汤及拆方水煎液通过抑制细胞TNF-α的释放,显著减少H9C2的凋亡,提高细胞存活率,对缺血缺氧的H9C2有直接保护作用。
简介:目的:观察温阳通脉方含药血清是否在内质网应激相关通路对心肌细胞缺氧/复氧损伤的作用,并探究体外培养时最佳给药剂量。方法:以20%含药血清处理,用四甲基偶氮唑盐(MTT)法测得CoCl2烫最佳浓度和各组细胞存活率;比色法检测各组半胱氨酸蛋白酶3(Caspase3)酶活性和上清液中乳酸脱氢酶(LDH)活性;Hoechst33342荧光染色观察各组细胞凋亡形态变化;流式细胞术检测各组细胞凋亡率;WesternBlot法检测各组内质网应激相关蛋白GRP78、Caspase12、CHOP表达以及凋亡相关蛋白Bcl-2、Bax表达情况。结果:与空白对照组血清相比,模型组细胞活性明显降低,Caspase3酶活性和LDH活性明显升高,细胞凋亡数量明显增多,凋亡率明显升高,GRP78、Caspase12、CHOP和Bax表达明显增多,Bcl-2表达明显减少;与模型组相比,3.24、6.48、12.96g/kg组含药血清能够不同程度改善细胞活性,Caspase3酶活性和LDH活性明显减少,凋亡率不同程度降低,GRP78、Caspase12、CHOP和Bax表达明显减少,Bcl-2表达不同程度增多。结论:温阳通脉方能减轻缺氧/复氧后H9C2心肌细胞损伤,其机制可能与温阳通脉方抵抗内质网应激介导的细胞凋亡有关,其抗凋亡程度呈剂量依赖性,以温阳通脉方12.96g/kg组效果最佳。
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:ThefruitsofPaulowniacatalpifoliaGongTongareusedasaChinesefolkherbalmedicineforthetreatmentofenteritis,tonsillitis,bronchitis,anddysentery,etc.OurpreviousstudyhasidentifiednewC-geranylatedflavanoneswithobviousanti-proliferativeeffectsinlungcancerA549cells.Inthepresentstudy,anewC-geranylatedflavone,paucatalinoneC(1)andfiveknownC-geranylatedflavanones(2-6)wereisolated.Inaddition,atotalof34C-geranylatedflavonoidsweredetectedbyHPLC-DAD-ESI-MS/MScouplingtechniquesfromtheCH_2Cl_2extractofP.catalpifolia.Futhermore,anti-agingeffectsofisolatedcompoundswereevaluatedinvitrowithprematuresenescent2BScellsinducedbyH_2O_2.PhytochemicalresultsindicatedthatP.catalpifoliawasanaturalresourceofabundantC-geranylatedflavonoids.Diplacone(3)andpaucatalinoneA(5)werethepotentanti-agingagentsintheprematuresenescent2BScellsinducedbyH_2O_2andtheC-geranylsubstituentmaybeanimportantfactorbecauseofitslipophiliccharacter.
简介:Thepresentstudywasdesignedtosynthesize2-Cyano-3,12-dioxooleana-1,9(11)-en-28-oate-13β,28-olide(1),alactonederivativeofoleanolicacid(OA)andevaluateitsanti-inflammatoryactivity.Compound1significantlydiminishednitricoxide(NO)productionanddown-regulatedthemRNAexpressionofiNOS,COX-2,IL-6,IL-1β,andTNF-αinlipopolysaccharide(LPS)-stimulatedRAW264.7cells.FurtherinvivostudiesinmurinemodelofLPS-inducedacutelunginjury(ALI)showedthat1possessedmorepotentprotectiveeffectsthanthewell-knownanti-inflammatorydrugdexamethasonebyinhibitingmyeloperoxidase(MPO)activity,reducingtotalcellsandneutrophils,andsuppressinginflammatorycytokinesexpression,andthusamelioratingthehistopathologicalconditionsoftheinjuredlungtissue.Inconclusion,compound1couldbedevelopedasapromisinganti-inflammatoryagentforinterventionofLPS-inducedALI.
简介:目的:研究徐长卿(CynanchumpaniculatumBge.)中C21甾体化学成分.方法:应用多种色谱柱层析法对徐长卿的乙酸乙酯部位进行化学成分的分离,并通过波谱技术鉴定化合物的结构,结果:分离鉴定了7个C21甾体化合物,分别为3β,14-dihydroxy-14β-pregn-5-en-20-one(Ⅰ),glaucogeninC(Ⅱ),glaucogeninA(Ⅲ),glaucogeninD(Ⅳ),neocynapanogeninF(Ⅴ),glaucogeninC3-O-β-D-thevetoside(Ⅵ),neoeynapanogeninF3-O-β-D-oleandropyranoside(Ⅶ).结论:化合物Ⅲ、Ⅳ、Ⅵ为首次从该植物中分离得到.
简介:试图从MomordicacharantiaL的新鲜水果调查化学成分。方法化学成分被层析在硅石胶化和octadecylsilanized(ODS)硅石上孤立并且净化胶化,和结构被决定由光谱数据和化学证据。结果A新C30甾醇glycoside,命名25-isopropenylchole-5,(6)-ene-3-O--D-glucopyranoside(1),从M的新鲜水果被孤立。charantiaL。结论化合物1是新C30甾醇glycoside。
简介:ThepresentstudywasdesignedtoisolateandcharacterizetheanalgesiccompoundsofArtemisasacrorumLedeb.TheEtOAccrudeextractsfromtheaerialpartsofArtemisasacrorumLedebwereseparatedbychromatographyandthestructuresofnewcompoundswereelucidatedbasedonspectralanalyses.Analgesicactivitiesoftheisolatedcompoundswereassessedinratswithhotplatetestandpawpressureassay.TwonewflavoneC-glycosides,namedasSacrorosideAandB(Compounds1and2)wereisolatedfromtheEtOAccrudeextractoftheaerialpartsofArtemisasacrorumLedeb.Theyshowedsignificantanalgesiceffects.Inconclusion,Compounds1and2arenewnaturalproducts,whichshowsignificantanalgesiceffectsinadose-dependentmanner.
简介:槐果碱可明显升高正常大鼠血浆6-酮-PGF1a含量,对TXB2无明显影响。小剂量(1mg/100g)阿斯匹林轻度降低血浆6-酮-PGF1a含量,但明显阻断槐果碱升高6-酮-PGF1a的作用。
简介:目的:探讨野西瓜挥发油(CapparisspinosaL.essentialoil,CSEO)对人肝癌HepG-2抑制生长和诱导凋亡作用及其机制。方法:MTT法研究CSEO对人肝癌HepG-2的抑制生长;荧光显微镜观察HepG-2细胞形态;流式细胞仪研究CSEO对HepG-2细胞周期的影响及诱导凋亡作用,罗丹明123单染观察CSEO对线粒体膜电位的改变;激光共聚焦显微镜检测CSEO对HepG-2细胞内Ca^2+浓度的影响。结果:CSEO对人肝癌HepG-2细胞生长具有明显的抑制作用,并且有剂量依赖性,IC50为127.5μg·mL^-1;CSEO作用48h后,HepG-2细胞在出现特征性凋亡形态特征,300μg·mL^-1组的凋亡细胞比率高达44.447%;75和150μg·mL^-1下出现G1期细胞阻滞,S期细胞比例下降,G2期细胞比例下降的趋势;CSEO各组线粒体膜电位(Δψm)有所降低,表现为曲线相左移行,此外,中、高浓度的CSEO还可以显著增加细胞内Ca^2+浓度。结论:CSEO对人肝癌HepG-2有明显的抑制生长和诱导凋亡作用,其机制可能与线粒体膜电位降低和钙超载有关。
简介:试图在安息香perkinsiae的bark学习化学成分。混合物与色析法的方法被孤立的方法,和他们的化学结构被阐明根据光谱数据。结果十混合物作为5-(2-propen-1-one)被孤立并且鉴别-7-methoxy-2-(3,4-methylenedioxyphenyl)benzofuran(1),1-hydryoxyegonolgentiobioside(2),obassiosideB(3),egonol(4),egonol配糖物(5),egonolgentiobioside(6),egonolgentiotrioside(7),styraxlignolideB(8),styraxjaponosideC(9),和masutakeside我(10)。结论混合物1和2是新2-phenylbenzofurans。
简介:Thestereochemistryoftwo6,9-oxygenbridgedibenzocyclooctadienelignansfromKadsuracoccinea,aredifficulttoseparateandveryunstable.Thepresentstudywasdesignedtodevelopahigh-performanceliquidchromatographyusingcirculardichroismdetectionfortheanalysisofthestereochemistry.Anew6,9-oxygenbridgedibenzocyclooctadienelignansnamedKadsulignanQwasfirstlyfoundwithanS-biphenylconfiguration.TheothercompoundwasidentifiedasKadsulignanLwithanR-biphenylconfiguration.Inordertoobtainkineticdataontheirreversibleinterconversion,thestabilitywasmeasuredatdifferentdeuteratedsolventssuchasdeuteratedmethanol,deuteratedchloroformanddeuterateddimethylsulfoxide.Thelignansweremoreunstableandconvertedmoreeasilyindeuteratedmethanolthanindeuteratedchloroformanddeuterateddimethylsulfoxide.
简介:目的:研究何首乌不同炮制品含药血清对H2O2诱导PC12细胞损伤的保护作用。方法:将何首乌生品、清蒸品、黑豆汁蒸品按20g/kg剂量小鼠灌胃给药,分别将其含药血清分别分成20%、10%、5%含药血清组,采用MTT法测定其对正常PC12细胞增殖的影响和对H2O2致PC12细胞损伤的保护作用,并用比色法测定SOD活性、LDH和MDA含量。结果:何首乌不同炮制品含药血清对正常PC12细胞增殖均无明显影响,含何首乌生品、黑豆汁蒸品各浓度血清和10%,5%含清蒸品血清可显著增强受损细胞内SOD活性(P〈0.05-0.01);10%,5%含生品血清、含黑豆汁蒸品各浓度血清和10%含清蒸品血清能明显降低受损细胞LDH释放量(P〈0.05-0.01);含清蒸品各浓度血清和20%,5%含黑豆汁蒸品血清能降低受损细胞的MDA释放量(P〈0.05),而含生品各浓度血清对细胞内MDA水平无显著降低作用。结论:含何首乌黑豆汁蒸品和清蒸品血清对H2O2致PC12细胞损伤有保护作用。
简介:Capsaicin(trans-8-methyl-N-vanillyl-6-nonenamide)isthemaincomponentinhotpeppers,includingredchilipeppers,alapenos,andhabanero,belongingtothegenusCapsicum.Capsaicinisapotentantioxidantthatinterfereswithfreeradicalactivities.Inthepresentstudy,thepossibleprotectiveeffectofcapsaicinwasstudiedagainstmethylmethanesulphonate(MMS)inducedtoxicityinthirdinstarlarvaeoftransgenicDrosophilamelanogaster(hsp70-lacZ)Bg~9.ThethirdinstarwasallowedtofeedonthediethavingdifferentdosesofcapsaicinandMMSseparatelyandincombination.TheresultssuggestedthattheexposureofthirdinstarlarvaetothediethavingMMSaloneshowedsignificanthsp70expressionaswellastissueDNAandoxidativedamage,whereasthelarvaefeedonthediethavingMMSandcapsaicinshowedadecreaseinthetoxiceffectsfor48-hofexposure.Inconclusion,capsaicinshowedadose-dependentdecreaseinthetoxiceffectsinducedbyMMSinthethirdinstarlarvaeoftransgenicDrosophilamelanogaster.
简介:目的:研究黄山药(DioscoreapanthaicaPrainetBurkill)的化学成分,寻找新的活性物质.结果:分离鉴定了3个C27甾体皂苷,其结构分别鉴定为26-O-β-D-吡喃葡萄糖基-(25R)-呋甾烷-5-烯-3β,22ξ,26-三醇3-O-α-L-吡喃鼠李糖基-(1→2)-β-D-吡喃葡萄糖苷(protobiosideⅠ),26-O-β-D-吡喃葡萄糖基-(25R)-呋甾烷-5-烯-3β,22ξ,26-三醇3-O-β-D-吡喃葡萄糖基-(1→4)-[α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(deltosideⅡ),26-O-β-D-吡喃葡萄糖基-(25R)-呋甾烷-5-烯-3β,22ξ,26-三醇3-O-β-D-吡喃葡萄糖基-(1→3)-β-D-吡喃葡萄糖基-(1→4)-[α-L-吡喃鼠李糖基-(1→2)]-β-D-吡喃葡萄糖苷(Ⅲ).结论:以上化合物均为首次从该植物中分到.与文献报道的从该植物中分到的化合物进行比较,认为文献报道的化合物可能为药材久放后的酶解产物或提取分离过程中的人工产物.
简介:PlatycodinD(PD),从Platycodonis根值孤立的triterpenoidsaponin,是被显示了在几根癌症房间线有anti-proliferative效果的一副著名中草药。这研究的目的是用proteomics途径与PD在hepatocellular癌HepG2房间的治疗以后在细胞的蛋白质决定变化。房间生存能力用MTT试金被决定。proteome被二维的差别胶化电气泳动和帮助矩阵的激光解吸附作用/电离time-of-flight团spectrometry分析。西方的污点分析被用来证实改变的蛋白质的表示。我们的结果证明PD在集中依赖者和时间依赖者礼貌禁止了HepG2房间的增长。十六蛋白质被识别在对待PD的HepG2房间起来调整包括ATP5HOXCT1,KRT9,CCDC40,ERP29,RCN1,ZNF175,HNRNPH1,HSP27,PA2G4,哲学学士,BANF1,TPM3,ECH1,LGALS1,和MYL6三蛋白质(即,RPS12,EMG1,和KRT1)与PD在治疗以后在HepG2房间减少了。在HSP27和哲学学士的变化被西方的弄污进一步证实。在结论,我们的结果为PD的反癌症活动在行动的机制上打开新灯。
简介:biflavonoidisochamaejasmin主要在StellerachamaejasmeL的根被散布。(Thymelaeaceae)那在繁体中文药(TCM)被使用治疗肿瘤,肺结核,和干癣。此处,isochamaejasmin被发现对Bcl-2家庭蛋白质显示出类似的bioactivity到参考Bcl-2ligand(−)通过3D类似搜索的-gossypol。它有选择地跳了到Bclx有K和Mcl-1>是的i价值1.93±0.13mol·L−1和9.98±0.21mol·L−1,分别地。另外,isochamaejasmin显示出细微生长对有是的IC50价值的HL-60的禁止的活动50.40±1.21mol·L−1和中等生长对有IC50价值的K562细胞的禁止的活动是24.51±1.62mol·L−1。而且,isochamaejasmin由增加在Bcl-2-inducedapoptosis小径包含了的caspase-9,caspase-3,和PARP的劈开的蛋白质的细胞内部的表示层次导致了K562房间的apoptosis。这些结果显示isochamaejasmin由禁止Bcl-2家庭蛋白质的活动在白血病房间导致apoptosis,提供为进一步学习S的内在的反癌症机制的证据。chamaejasmeL。