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：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：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：ThepresentstudywasdesignedtoisolateandcharacterizetheanalgesiccompoundsofArtemisasacrorumLedeb.TheEtOAccrudeextractsfromtheaerialpartsofArtemisasacrorumLedebwereseparatedbychromatographyandthestructuresofnewcompoundswereelucidatedbasedonspectralanalyses.Analgesicactivitiesoftheisolatedcompoundswereassessedinratswithhotplatetestandpawpressureassay.TwonewflavoneC-glycosides,namedasSacrorosideAandB(Compounds1and2)wereisolatedfromtheEtOAccrudeextractoftheaerialpartsofArtemisasacrorumLedeb.Theyshowedsignificantanalgesiceffects.Inconclusion,Compounds1and2arenewnaturalproducts,whichshowsignificantanalgesiceffectsinadose-dependentmanner.

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: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：用光化学沟通方法确证了从葡萄科植物Vitisthunbergii(Vitaceae)中分离得到的(+)-cis-ε-viniferin的结构;并纠正了文献核磁共振氢谱(1H-NMR)数据.

简介：目的：研究毫菊花硫磺熏蒸前后化学成分组成结构差异，并讨论硫磺熏蒸对亳菊花质量的影响。方法：建立硫磺熏蒸前后毫菊花的化学成分指纹图谱，采用HPLC—DAD色谱法测定毫菊花中主要活性成分绿原酸和木犀草素在硫磺熏蒸前后的含量变化。ZORBAXSB-C18柱（150mm×4．6mm，5μm），甲醇（A）-0．3％磷酸水（B），梯度洗脱，流速：1．0mL·min^-1，检测波长：324nm（绿原酸）和348nm（木犀草素），柱温25℃。结果：经硫磺熏蒸过后的毫菊花中2、4、7、8、9、10号指纹峰所代表的成分含量均有不同程度的下降；亳菊花经硫磺熏蒸过后，绿原酸含量平均值由（3．68±0．06）g·kg。增加为（4．91±0．01）g·kg^-1（P〈0．01），木犀草素含量平均值无显著变化。结论：亳菊花经过硫磺熏蒸后，亳菊花原有的化学成分组成结构发生了改变，这一变化将影响到硫熏亳菊花的安全性和有效性，因此对其临床使用有待进一步研究。

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：目的：从银耳孢糖中分离、纯化3种均一多糖，TSP-2a～TSP-2c，研究其结构特征及生物活性.方法：银耳孢糖经DEAE-SephadexA-50分离得TSP-2，进一步采用SephadexG-150分离纯化得TSP-2a～2c，经凝胶色谱法和HPGPC方法鉴定其纯度.利用化学方法和色谱及光谱分析方法进行结构研究.采用放射免疫法测定了TSP-2、TSP-2a～TSP-2c刺激人外周血单核细胞（PBMC）后促进细胞因子IL-1α、IL-6、IL-8分泌的增加.结果：TSP-2a～TSP-2c为均一多糖，分子量分别为1100kD、500kD、400kD．组成糖为岩藻糖（Fuc）、木糖（Xyl）、甘露糖（Man）、葡萄糖（Glc）和葡萄糖醛酸（GlcA）.其结构都以（1→3）一D—Man为主链，并在O-2，O-4，O-6位上有分支点.各均一多糖在不同程度上对细胞因子的产生起到促进作用．结论：TSP-2a～TSP-2c均为一多分枝的结构复杂的酸性杂多糖，具有显著的免疫活性.

简介：目的：研究一株拟盘多毛孢菌（Pestalotiopsissp.）的化学成分。方法：采用硅胶（silicagel,Rp-18silicagel）和凝胶（SephadexLH-20）柱层析的方法分离和纯化化合物,其结构由核磁共振波谱（1HNMR,13CNMR,DEPT,1H-1HCOSY,HSQC,HMBC和NOESY）和HRESI-Q-TOFMS解析。结果：从拟盘多毛孢菌的静置发酵培养液中分离到一个倍半萜化合物（1）和一个已知化合物4-羟基苯乙醇。结论：化合物1为新化合物。

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：海洋异臭椿类三萜化合物是一类化学结构特殊并具有多种生物活性的海洋天然产物.近年来国内外学者对海绵等海洋生物中的异臭椿类三萜化合物及其生物活性进行较多研究.本文拟对海洋异臭椿类三萜的结构与生物活性关系作初步探讨.

简介：目的:研究福参的活性成分.方法:采用柱色谱及重结晶法进行分离纯化,通过光谱法进行结构定，化学沟通法确定绝对构型.结果:分得一个色原酮divaricatol(1).结论:化合物1首次从当归属物中分得.到目前为止,福参中分离到的色原酮类化合物与中药防风的基源植物防（SaposhnikoviadiavaricataSchischk.Syn.LedebouriellaseseloidesWolff）中的色原酮活性成分很相近.