简介：Houttuyniacordatapolysaccharide(HCP)isextractedfromHouttuyniacordata,akeytraditionalChinesemedicine.ThestudywastoinvestigatetheeffectsofHCPonintestinalbarrierandmicrobiotainH1N1virusinfectedmice.MicewereinfectedwithH1N1virusandorallyadministratedHCPatadosageof40mg(kg^-1(d^-1.H1N1infectioncausedpulmonaryandintestinalinjuryandgutmicrobiotaimbalance.HCPsignificantlysuppressedtheexpressionofhypoxiainduciblefactor-1αanddecreasedmucosubstancesingobletcells,butrestoredthelevelofzonulaoccludens-1inintestine.HCPalsoreversedthecompositionchangeofintestinalmicrobiotacausedbyH1N1infection,withsignificantlyreducedrelativeabundancesofVibrioandBacillus,thepathogenicbacterialgenera.Furthermore,HCPrebalancedthegutmicrobiotaandrestoredtheintestinalhomeostasistosomedegree.TheinhibitionofinflammationwasassociatedwiththereducedlevelofToll-likereceptorsandinterleukin-1βinintestine,aswellastheincreasedproductionofinterleukin-10.OraladministrationofHCPalleviatedlunginjuryandintestinaldysfunctioncausedbyH1N1infection.HCPmaygainsystemictreatmentbylocalactingonintestineandmicrobiota.Thisstudyprovedthehigh-valueapplicationofHCP.

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：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：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：通过比较两种肥大细胞模型RBL-2H3和P815细胞激活后脱颗粒反应的差异,寻找早期、稳定、敏感的肥大细胞脱颗粒体外检测模型,为进一步建立基于细胞水平的过敏原和抗过敏药物的体外筛选模型提供一定的参考。方法：10μg·mL^-1C48/80激活细胞15-60min,比色法检测组胺、β-氨基己糖苷酶及类胰蛋白酶等过敏介质的释放,中性红染色法进行形态学观察,流式细胞法检测AnnexinV阳性细胞率。结果：C48/80刺激P815、RBL-2H3细胞15-60min后组胺释放率均明显增加,并且相同刺激条件下,两种细胞模型的组胺释放率基本相当。C48/80刺激P815细胞15min以上,β-氨基己糖苷酶释放率、类胰蛋白酶释放率、AnnexinV阳性细胞率和中性红染色脱颗粒细胞率均明显增加;但相同浓度的C48/80需刺激RBL-2H3细胞30-45min以上,上述指标才出现显著增加。在相同的刺激条件下,P815细胞过敏介质释放率、AnnexinV阳性率和脱颗粒率均高于RBL-2H3细胞。结论：同RBL-2H3相比,在相同刺激条件下,P815细胞活化后脱颗粒时间出现更早、程度更高。提示除RBL-2H3细胞,P815细胞也可作为一种早期、稳定、敏感的肥大细胞脱颗粒体外检测模型。

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：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.