简介：BackgroundTaxifolin(Tax)isanessentialnaturalantioxidant.MultiplestudieshaveshownthatTaxcanprotectcardiomyocytesfromischemia-reperfusioninjury.However,theunderlyingmechanismisstillunclear.MethodsH9C2cellswererandomlydividedintocontrol,H_2O_2group,Taxpretreatmentgroup(Tax+H_2O_2);Taxeffectgroup.CellactivitywasdetectedbyCCK-8andtheintracellularstructurewasobservedbytransmissionelectronmicroscopy.AutophagywasdeterminebyWesternblottinganalysisofBeclin-1,Bcl-2andPKC.ResultsTaxpretreatmentsignificantlyincreasedanti-apoptoticproteinBcl-2andautophagyproteinBeclin-1.ExpressionofPKCwasinhibitedbyTax.ConclusionsTaxpretreatmentcouldprotectH9C2cellsagainstH_2O_2-induceddamagethroughtheBcl-2andautophagypathways.

简介：目的探讨橙皮素（HES）对H2O2诱导的H9c2心肌细胞凋亡的影响.方法采用H2O2建立H9c2心肌细胞氧化应激损伤模型.实验分为4组：正常对照组（Control组）、H2O2损伤组（H2O2组）、单纯橙皮素处理组（HES组）、橙皮素预处理＋H2O2组（HES＋H2O2组）.H2O2（400μM）处理2h建立心肌细胞氧化应激损伤模型,HES＋H2O2组于建模前1h加入40μM橙皮素.采用CCK-8法确定H9c2细胞活性,DCFH-DA探针检测细胞活性氧簇（ROS）水平,流式细胞术检测心肌细胞凋亡,分光光度计检测Caspase-3活性.结果橙皮素预处理可明显改善H2O2诱导的H9c2心肌细胞活性降低,且浓度为40μM时保护作用最明显;给予40μM橙皮素预处理后ROS的产生明显减少,Caspase-3活性显著下降,心肌细胞凋亡率为（28.32±2.12）%,明显低于H2O2组（50.33±2.56）%（P〈0.05）.结论橙皮素对氧化应激诱导的心肌细胞凋亡具有抑制效应.

简介：电交替是1种心电现象,复合性电交替者较少见,现报告1例.

简介：C-反应蛋白是机体非特异性炎症反应的敏感标志物,可能参与心血管疾病的发生和发展,当它增高时,可能预测未来心血管事件的发生.对C-反应蛋白在某些方面也存在激烈的争论.

简介：BackgroundTheprognosticvalueofserumC-reactiveprotein(CRP)inpatientswithinfectiveendocarditis(IE)isnotwellelucidated.ThisstudyaimedtoevaluatetheusefulnessofCRPinpredictingtheoutcomeofIE.MethodsTwohundredninty-sixpatientsfrom2009to2012intheDepartmentofCardiologyatGuangdongGeneralHospitalwerescreenedanddividedintosurgicalandconventionaltreatmentgroups.CRP,whitebloodcell(WBC),erythrocytesedimentationrate(ESR)andotherclinicaldatawereobtainedwithfollow-upfor12months.ResultsTwohundredthirty-sixpatientswereassignedtoreceivesurgerytreatmentwhile60patientsreceivedconventionaltreatment.Inthesurgerygroup,thelevelofCRPinthedeathpatientswassignificantlyhigherthanthatinthesurvivalpatients(P<0.001).TheareaunderthecurveofROCwasabout0.749(SE0.064,P=0.005,95%CI,0.624-0.874)andthecut-offpointofCRPwas23.8mg/L.Inconventionalgroup,therewassignificantdifferencebetweendeathandsurvival(P<0.001).TheareaunderthecurveofROCwasabout0.701(SE0.095,P=0.032,95%CI,0.515-0.888)andthecut-offpointsofCRPwas65.6mg/L.TherewerenosignificantdifferencesinWBCandESRbetweensurgeryandconventionalgroups.ConclusionAmoreaggressivesurgicalinterventionresultsinabetteroutcomeoverconventionaltreatmentandCRPcouldbeservedasapredictivemarkerforadverseoutcomeinIEpatients.

简介：研究疾病:晚期心力衰竭.目的:比较血管紧张素转换酶抑制和直接血管扩张对晚期心衰预后的影响.设计:随机式.病人资料:117例充血性心力衰竭者,NYHAⅢ级或Ⅳ级,休息时有血液动力学异常,为心脏移植做评估.

简介：番茄是人们餐桌上常有的蔬果,有人说要生吃,有人说要熟吃,到底番茄怎么吃才更有益健康呢？我们购买番茄时应避免选择未成熟的青色番茄,因其含有毒的龙葵碱,吃多了可能导致中毒,出现头晕、恶心、呕吐及全身疲乏等症状,严重的还有生命危险。因此宜选择个大、圆润、丰满、已经熟透的番茄食用。

简介：目的评估低密度脂蛋白胆固醇（LDL—C）／高密度脂蛋白胆固醇（HDL—C）比值对经皮冠脉介入（PcI）术后患者心血管事件的预测价值。方法选择急性冠脉综合征（ACS）并予前降支置入支架的患者119例，依据血浆LDL—C／HDL—C比值将患者分为3组，随访1年，评估三组患者心血管事件发生率，以及各危险因素与心血管事件发生率的关系。结果①与LDL—C／HDL—C比值较低的两组相比，比值较高组患者体重指数、女性患者百分率、吸烟人数及糖化血红蛋白、高敏C反应蛋（hs—CRP）、总胆固醇和LDL—C水平均明显升高，而HDL—C水平和他汀类药物使用率则较低（P〈0．05）。②第1组风险（HR）1．04，95％可信区间（c，）0．98-1．08，第2组HR1．16，95％C11．08-1．20，第3组HR1．27，95％C11．19～1．36（P〈0．05）。随着LDL—C／HDL—C比值的升高，PCI术后1年患者心血管事件发生率也逐渐升高（P〈0．05）。③Cox比例风险回归模型提示，LDL—C／HDL—C比值对PCI术后心血管事件风险的预测价值优于其他危险因素。结论LDL—C／HDL—C比值对PCI术后患者1年内心血管事件再发具有一定的预测价值。

简介：根据一项新的研究，添加服用维生素C或E不能帮助预防年龄相关性白内障。白内障或眼睛的晶状体浑浊是老年人失明的主要原因。年龄相关性白内障影响一半以上超过65岁的美国人。手术去除白内障是唯一有效的治疗方法，并且除了戒烟和多吃富含水果与蔬菜的饮食之外，关于如何预防它们知道的很少。

简介：一个新的研究显示,血液C反应蛋白(C-reactiveprotein,简称CRP)水平高并不会使人发生心脏病和中风的风险升高。C反应蛋白是一种反应人体炎症状态的蛋白。近年来C反应蛋白很受关注,因为有证据显示它与心脏病相关,可能是心脏病的标志物之一。但疑问仍然存在,到底C反应蛋白只是反映心脏存在问题,还是它本身可以导致心脏疾病?

简介：ObjectivesTostudythedepressiveeffectoftheantisenseoligonuceotides(ASODN)ofc-mycandproliferatingcellnuclearantigen(PCNA)ontheproliferationofVSMC.MethodsTakingtheVSMCobtainedfromrataortathoracaliscultured4～8generationasresearchobject.Theobjectsweredividedintothreegroupstocarryoutcontrolstudy:controlgroup,PCNAASODNgroupandc-mycASODNgroup.TheASODNs'workingconcentrationallwere1:50.ThedepressiveeffectofASODNonVSMCproliferationwasinvestigatedbycellcounting,MTTand3H-TdRincorporationassay;PCNAandc-mycexpressionweredetectedbyimmunohistochemicalmethodaftertransferringPCNAandc-mycASODNintoVSMC.ResultsPCNAandc-mycASODNcouldinhibittheproliferationofVSMCsignificantly,comparedwithcontrolgroup(P<0.05).②TransferringPCNAandc-mycASODNintoVSMCobtainedsuccessfully;thecorrespondinggenewasinhibitedobviously;comparedwithcontrolgroup(P<0.05).ConclusionsPCNAandc-mycmightplayaconsiderableroleintheVSMCproliferationprocess.ThecorrespondinggenecouldbedepressedsuccessfullyaftertransferringPCNAandc-mycASODNintoVSMC,andthentheproliferationofVSMCwassloweddown.Thisstudypresentedabeneficialproposalandtheoreticalfundamentforatherosclerotictreatment.

简介：Bothendotheliallipasegene(LIPG)584C>T(rs2000813)polymorphismandalcoholconsumptionmodulateserumlipidlevels.Buttheirinteractionsonserumlipidprofilesarenotwellknown.ThepresentstudywasundertakentodetecttheinteractionsofLIPG584C>Tpolymorphismandalcoholconsumptiononserumlipidlevels.GenotypingoftheLIPG584C>Twasperformedin763nondrinkersand520drinkersaged15-85.Interactionsbetweenthegenotypesandalcoholconsumptionwereassessedbyusingacross-productterm.Thelevelsofserumtotalcholesterol(TC),triglyceride(TG),high-densitylipoproteincholesterol(HDL-C),apolipoprotein(Apo)AI,andtheratioofApoAItoApoBwerehigherindrinkersthaninnondrinkers(P<0.01forall).Therewasnosignificantdifferenceinthegenotypicandallelicfrequenciesbetweennondrinkersanddrinkers.ThelevelsofserumTC,HDL-CandApoAIinnondrinkersweredifferentamongthethreegenotypes(P<.05-.01).ThesubjectswithCTgenotypehadhigherserumTC,HDL-CandApoAIlevelsthanthesubjectswithCCgenotype.ThelevelsofserumHDL-CandApoAIindrinkersweredifferentamongthethreegenotypes(P<.001andP<.05;respectively).TheindividualswithTTgenotypehadhigherserumHDL-CandApoAIlevelsthantheindividualswithCCandCTgenotypes.ThelevelsofTCinnondrinkerswerecorrelatedwithLIPG584C>Tallele(P<.05),whereasthelevelsofTGandHDL-CwereassociatedwithLIPG584C>Talleles(P<.05)andgenotypes(P<.05);respectively.ThepresentstudysuggeststhatthesubjectswithTTgenotypebenefitedmorefromalcoholconsumptionthanthesubjectswithCTandTTgenotypesinincreasingserumHDL-CandApoAIlevels.

简介：backgroundBonemarrowmesenchymalstemcells(BMSCs)canbeisolatedandculturedtomanypassages.However,StemcellsincludingBMSCsquicklyundergosenescenceinculture.Thecellsenescenceandmulti-directionaldifferentiationhavehamperedproducingBMSCsinquantitywiththeirundifferentiatedstate.Inthisstudywereportanaturalcompound,vitaminC(Vc),maintainsBMSCsstemproperty.MethodsHumanBMSCswereisolatedfrombonemarrowandpurifiedby1.073g/mLdensitygradientcentrifugation.50ng/mLVcwereaddedtoBMSCsfordifferenttimepoint.FlowcytometrywasusedtodetectcellsurfacemarkersofBMSCswithorwithoutVctreatment.BMSCsproliferationwasanalyzedbyMTTassay.PCR(polymerasechainreaction)andreal-timePCRwereusedfordetectingc-kit,nanog,andOct-4genesexpressionlevels.DNAmethyltransferase(Dnmt)1andDnmt3blevelswerealsodetectedbyreal-timePCR.ResultsFlowcytometryshowedthatafterVctreatmentfor6h,thesurfacemarkersofBMSCswerealmostunchanged.VcincreasedtheproliferationactivityofBMSCsfrom6hto24h.PCRshowedtheexpressionofc-kit,nanog,andoct-4geneswereobviouslyincreasedinVctreatedgroupthancontrolgroupat12h.Real-timePCRshowedthatthelevelofc-kit,nanog,andoct-4geneswereunregulatedfrom6hto12hcomparedwithcontrolgroup.VcalsoincreasedDnmt3bbutnotDnmt1geneexpression.ConclusionsOurresultsshowedVcactsatleastacceleratesBMSCsproliferationandmaintainsstemcellproperty.Inourstudy,wehighlightedamethodofimprovingthespeedofBMSCsgenerationandprovidedadditionalinsightsintothemechanisticbasisofpreventingBMSCssenescence.

简介：BackgroundInthisstudy,weaimedtoevaluatetheimpactofabnormalglucose,lipidandCystatin-ConthevirtualPvectorcharacteristics,whichhaven’tbeenreportedinpreviousstudies.Methods204ofnon-diabetesmellitus(NDM),130ofDM(type2)and39ofimpairedglucosetolerance(IGT)patientswereconsecutivelyandretrospectivelyrecruited.Weselectedaone-minutelengthofelectrocardiogramat4AMforanalysis.Afteraseriesofcalculatingalgorisms,weobtainedthevirtualplanarPvectorparameters.ResultsTherewerenosignificantdifferencesinFPV,FPA,RSPV,RSPA,HPVandHPAgroups.Afteradjustingconfoundingfactors,theregressioncoefficients(RC)wereestimatedasfollow:forFPV,femalegender(RC-0.21,P=0.02),triglyceride(RC-0.09,P<0.01),RVOT(RC0.03,P=0.02);forRSPV,femalegender(RC-0.21,P<0.01),triglyceride(RC-0.10,P<0.01),averageheartrate(RC0.01,P=0.02);forHPV,triglyceride(RC-0.08,P<0.001),LDL(RC-0.19,P<0.01),ApoB(RC0.67,P<0.01);forRSPA,Btypeofblood(RC-22.06,P=0.02),Cystatin-C(RC-72.79,P=0.02),thicknessofinterventricularseptum(RC3.70,P=0.01).Cystatin-CwassuggestedasacurerelatedtoRSPA,andthecut-offpointwas1.6mg/L.TherewerenosignificantriskfactorsassociatedwithFPAandHPA.TherewasnodifferenceinvirtualPvectoramongDM,IGTandNDMgroups.ConclusionIncreasedlevelsoflipidandCystatin-CsignificantlyimpactthecharacteristicsofvirtualPvector,whereasglucosedoesnot.Thesechangesmaycomefromahigherlowvoltageatrialareaandabnormalorientationofatrialdepolarization.

简介：缺血性卒中可引起局部脑组织缺血、缺氧性坏死，最终导致神经功能障碍。研究证实，氧化应激、炎性反应、血管损伤和神经细胞凋亡均可加重缺血性卒中所致的脑组织损伤。花青素家族，特别是矢车菊素-3-O-葡萄糖苷（Cyanidin-3-O-glucosidechloride，C3G）被证实可通过多种途径减轻自由基损伤、抑制炎性反应、保护血管内皮细胞，从而达到脑保护作用嵋。

简介：复合手术室为手术、血管内介入治疗以及影像学检查的融合提供了平台,使得高质量影像引导的显微外科手术成为了可能。近年来,国内外神经外科领域进行了一系列联合血管内治疗和显微外科手术的复合手术治疗复杂脑血管疾病的实践,包括巨大、梭形、宽颈等复杂颅内动脉瘤,高级别(Spetzler-Martin分级Ⅳ~Ⅴ级)等复杂动静脉畸形,传统治疗方式不能治疗或治疗失败的复杂动静脉瘘,颈动脉分叉和弓上动脉(颈总动脉和头臂干)多处狭窄。在实时评估手术有效性的同时简化了手术流程,为复杂脑血管病的治疗提供了新的机遇和挑战,但仍存在一系列问题有待进一步探索。

简介：近年来的研究证实，动脉粥样硬化的发生发展与炎症密切相关。作为机体非特异性的炎症敏感指标C反应蛋白（CRP）与脑血管疾病的相关性日益备受关注。我们对我院住院诊治的急性脑卒中患者早期CRP检测结果进行了系统分析，进一步明确CRP与脑血管疾病的关系，现报道如下。

简介：目的探讨络风宁1号方对心肌梗死大鼠血栓调节素-活化蛋白C-内皮细胞蛋白C受体系统的调节作用。方法将SD大鼠随机分为假手术组（7只）、模型组（8只）、络风宁1号方组（7只）、联合用药组（8只）、卡托普利组（8只），心肌梗死造模后络风宁1号组及联合用药组予含生药量4.81g/（kg·d）的络风宁1号方汤剂，卡托普利组及联合用药组予卡托普利片7.5mg/（kg·d），假手术组及模型组予相同体积蒸馏水，2/d，连续4周。4周后测定各组大鼠心肌梗死边缘组织血栓调节蛋白（TM）、活化蛋白C（APC）、内皮细胞蛋白C受体（EPCR）基因及蛋白的表达。结果模型组大鼠EPCR、TM的mRNA、sEPCR、sTM含量较假手术组明显升高（P＜0.05），EPCR、TM的蛋白表达及APC含量较假手术组下降（P＜0.05）；络风宁1号组、联合用药组EPCR、TM的mRNA以及含量较模型组降低，差异有统计学意义（P＜0.05），EPCR蛋白表达较模型组增加，差异有统计学意义（P＜0.05）；络风宁1号组、联合用药组血清APC含量较模型组增加（P＜0.05）。结论络风宁1号方能够减轻膜结合型EPCR、TM的损伤，抑制了TM、EPCR的mRNA代偿性增加，使sEPCR、sTM含量下降，APC含量增加。

简介：BackgroundApolipoprotein(apo)A-Visanovelmemberoftheapolipoproteinclusterinvolvedintriacylglycerol(TG)homeostasis.IthasreportedthatAPOA5genepolymorphismsiscorrelatedwitharterioscleroticdiseases.However,ThisassociationisunknownonChinesepatientswithatheroscleroticcerebralinfarction.ThepresentstudyaimedtoelucidatetherelationshipofAPOA5-1131T>Candarterioscleroticcerebralinfarction(ACI)aswellasthelevelsofserumlipids.MethodsPolymerasechainreaction-restrictionfragmentslengthpolymorphisms(PCR-RFLP)analysis,enzymaticandimmunoturbidimetrymethodswereusedtomeasure-1131T>Cgenotype,allelefrequencyaswellasplasmalipidlevelof90ACIpatientsand221healthysubjectsofHanChinese.ResultsInACIgroup,thelevelofTGinalleleCcarrierswashigherthanthatofnon-Ccarriers(P<0.05).ThefrequencyofalleleCinACIgroupwashigherthaninhealthygroup(χ~2=5.568,P=0.018).Exceptsex,ageandBMI,thelevelsoftotalcholesterol(TC),triglycerides(TG),highdensitylipoproteincholesterol(HDL-C),low-densitylipoproteincholesterol(LDL-C),APOA1andAPOBinACIgroupdistinctivelywerehigherthanthoseinhealthygroup.ConclusionTheAPOA5-1131alleleCisassociatedwiththehighlevelofTGinACIpatients,whichisprobablylinkedwithACIdangerofChineseHan.

简介：目的；探讨高敏C反应蛋白（hsCRP）与高血压之间的关系。方法；选择56例高血压1，2，3级患者和52例正常对照者．测定并比较其血清hsCRP浓度。结果：高血压病患者血清hscRP浓度明显高于对照组（P〈0-05），高血压3级患者的血清hsCRP浓度显著高于高血压1，2级患者（P〈0.05）。结论：高血压病患者血清hscRP浓度显著增加，且hsCRP浓度可反映其血压水平，炎症反应可能参与了高血压病的发生。