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：BackgroundH9c2celllineismononucleatedmyoblastderivedfromembryonicrathearttissue.ActivitiesofTGF-β1,MMP-2andMMP-9increaseinH9c2cellsaftertreatmentwithfibrosisstimuli.MicroRNA(miRNA),akindofendogenoussmallnon-codingRNA,participatesincardiacfibrosis.Inthepresentstudy,expressionsoffibrosis-relatedgenesandmicroRNAsinTGF-β1treatedH9c2cellswereinvestigated.MethodsExpressionsoffibrosis-associatedgenes,includingCol3a1,α-SMA,FN1,CTGFandTSP-1,weremeasuredinTGF-β1treatedH9c2cellsbyquantitativereversetranscriptionandPCR(qRTPCR).Levelofα-SMAinH9c2cellswasdemonstratedbyfluorescenceimmunohistochemistry(FIHC)assay.ExpressionsofmaturemiR-16,-21a,-29binH9c2cellsweredeterminedbyqRT-PCRassay.ActivationsofSmad3andNF-kBsignalinginTGF-β1-treatedH9c2cellswerestudiedbydualluciferaseassay.ExpressionsofCol3a1,α-SMA,FN1,CTGFandTSP-1weredetectedinH9c2cellswithadenovirus-mediatedoverexpressionofmiR-21a.ResultsqRT-PCRassayshowedthatα-SMA,FN1,CTGF,TSP-1,butnotCol3a1,wereup-regulatedinTGF-β1treatedH9c2cells.FIHCresultalsorevealedthatα-SMAwasincreasedinTGF-β1-treatedH9c2cells.Consistently,dualluciferaseassayshowedthatSmad3andNF-kBsignalingproteinswereactivatedinTGF-β1-treatedH9c2cells.miR-21a,butnotmiR-16and-29b,wassignificantlyup-regulated.Additionally,over-expressionofmiR-21asignificantlyincreasesmRNAexpressionsofα-SMA,FN1,CTGFandTSP-1inH9c2cells.ConclusionsMiR-21aisup-regulatedinTGF-β1treatedH9c2cells,andmaycontributetoup-regulationsoffibrosis-associatedgenes.

简介：目的本研究旨在观察钙敏感受体（calcium-sensingreceptor,CaSR）在高糖诱导H9C2心肌细胞中的表达以及其对氧化应激的作用.方法将H9C2细胞在不同条件下干预24h,包括正常糖浓度组（NG组）、高糖组（HG组）、高糖＋CaSR激动剂组（HG＋GdCl3组）、高糖＋CaSR抑制剂组（HG＋NPS2390组）.用CCK8试剂盒检测细胞存活率;DCFH-DA荧光探针检测细胞内活性氧簇（ROS）含量;用比色法检测细胞超氧化物歧化酶（SOD）和谷胱甘肽过氧化物酶（GSH-Px）活性以及丙二醛（MDA）含量.用Westernblot检测细胞CaSR蛋白表达水平.结果细胞存活率呈糖浓度依赖性降低[（89.00±1.54）％比（98.83±0.47）％,P＜0.01],CaSR蛋白表达量呈糖浓度依赖性增加2.14±0.09比1.06±0.05,P＜0.01）.高糖诱导可使细胞发生氧化应激,SOD（14.14±0.57比22.86±0.58,P＜0.01）与GSH-Px（2.62±0.59比3.04±0.89,P＜0.01）活性降低,ROS（0.040±0.002比0.020±0.001,P＜0.01）与MDA（0.83±0.05比0.54±0.02,P＜0.01）生成增多.与HG组相比,HG＋GdCl3组细胞氧化损伤加重（P＜0.05）.而HG＋NPS2390组细胞氧化损伤减轻（P＜0.05）.结论高糖能上调CaSR蛋白表达进而促进氧化应激的发生.

简介：目的探讨血半胱氨酸蛋白酶抑制剂C（CystatinC）及β2微球蛋白（β2-MG）在高血压患者早期肾功能损害中的诊断价值。方法测定48例原发性高血压患者与40例健康成人的血尿素氮（BUN）、肌酐（Cr）、β2-MG与CystatinC，并进行对比分析。结果原发性高血压患者组的血CystatinC及β2-MG高于健康对照组[分别为（1．84±0．58）比（1．08±0．28）mg／L，P〈0．05；（2．60±0．58）比（1．92±0．15）mg／L，P〈0．01].结论血CystatinC及β2-MG可显示原发性高血压患者早期肾功能损害，其敏感性优于血BUN和Cr。

简介：目的探讨瑞舒伐他汀对血脂正常的2型糖尿病患者血清高敏C反应蛋白（hs-CRP）的影响.方法选取2008年3月至2013年10月于我院诊治的血脂正常的2型糖尿病患者104例,按其就诊顺序进行编号并随机分为对照组（52例）和观察组（52例）.对照组患者行常规降糖治疗;观察组患者在常规治疗基础上加用瑞舒伐他汀治疗,10mg/次,1次/d.观察两组患者治疗前后血脂（HDL-C、LDL-C、TG、TC）及hs-CRP水平变化情况,采用统计学软件对两组患者观察指标进行对比分析.结果观察组患者治疗后TC[（4.28±0.86）mmol/L]、TG[（3.25±0.89）mmol/L]、LDL-C[（2.09±0.57）mmol/L]、HDL-C[（1.38±0.43）mmol/L]水平均明显优于对照组患者相应指标[（5.33±1.00）mmol/L、（3.58±1.01）mmol/L、（3.18±0.74）mmol/L、（1.16±0.31）mmol/L],差异有统计学意义（P＜0.05）.观察组患者治疗后hs-CRP水平明显低于对照组,差异有统计学意义（P＜0.05）.结论瑞舒伐他汀在进一步改善血脂正常的2型糖尿病患者血脂水平的同时,可有效降低患者hs-CRP水平,对于减轻患者动脉粥样硬化程度、减少心脑血管意外具有重要意义.

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：目的评价CHADS22及CHA2DS2-VASc评分系统在冠心病外科治疗中的意义.方法选择2006年1月至2010年1月行不停跳冠状动脉旁路移植术的768例患者,术后新发房颤患者97例.回顾患者的围术期及随访资料,应用CHADS2及CHA2DS2-VASc评分系统进行分析.结果768例患者术后新发房颤发生率12.6％,分为术后新发房颤组与非房颤组.新发房颤组与非房颤组平均年龄分别为（70.74±8.21）岁和（65.90±9.83）岁,围术期脑卒中分别为8例和9例,CHADS2评分值分别为3.20±1.26和2.13±0.94,CHA2DS2-VASc评分值分别为4.20±1.50和3.23±1.07.CHADS2和CHA2DS2-VASc评分是术后新发房颤的预测因素,与围术期脑卒中显著相关（P＜0.01）.结论冠心病外科治疗中应用CHADS2及CHA2DS2-VASc评分系统可预测术后新发房颤及围术期脑卒中,对冠心病术后新发房颤的抗凝及抗血小板治疗决策提供了依据,对卒中风险及预后有一定的评估价值.

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：Inspiteofrecentadvancesintreatmentandcontrol,theprevalenceofCVDandpulmonaryhypertension(PH)aroundtheworldhasincreasedsignificantly.Webelievethataconceptualbreakthroughisneededandnoveldrugtargetsmustbediscoveredinanattempttocontrolandtreatthem.ACE2,thenewestmemberoftherenin-angiotensinsystem(RAS),appearstoholdthispotential.Ourstudieshaveestablishedanovelconcept:abalancebetweenthevasodeleteriousaxis(ACE/AngⅡ/ATlR)andthevasoprotectiveaxis(ACE2/Ang-1-7/Mas)oftheRASiscriticalinmaintainingnormalCVfunctionsandanyimbalanceinitiatesvasculardysfunctionsleadingtocardiopulmonarydiseases.ThuswehypothesizethatACE2,whichisakeyenzymeindecreasingAngⅡandincreasingAng-1-7,wouldbeanidealforconsiderationasatherapeutictarget.Theobjectiveofmypresentationwillbetopresentevidenceinsupportofthisconcept.ThedatapresentedwilldemonstratethatoverexpressionofACE2bygeneticmeansoritsactivationbenovelACE2activatorsproteststheheartfromhypertension-andMi-inducedcardiacdamage.Also,thisstrategyisextremelyeffectiveinpreventionandreversalofPHandpulmonaryfibrosis.Astructure-baseddrugdiscoveryapproachwillbepresentedtoidentifysmallmoleculeACE2acti-vatorsandtheirpotentialinproducingbeneficialoutcomesonCVDandpulmonaryhypertensionwillbediscussed.

简介：Tostudytherelationshipbetweenmyeloperoxidase(MPO)-463G/Apolymorphismsandsusceptibilitytocoronaryarterydisease(CAD)inHanpeopleofnorthAnhuiprovince.MethodsThecasegroupconsistedof79patientswhohadallangiographicallyprovenCADwereretrospectivelystudied.Usedpolymerasechainreaction-restrictionfragmentlengthpolymorphism(PCR-RFLP)methodstodecidethegenotypeofallthepatients.ResultsThefrequencyofAAhomozygotictypeinHanpeopleofAnhuiprovincewas1.4%.TheriskofCADforpersoncarryingatleastoneAallelegenotype(GAandAA)was0.37timesofGGgenotype.TheseverityofcoronaryarterystenosisinCADpatientscarryingatleastoneAallelegenotypewas0.197timesofGGgenotype(P<0.05).ConclusionsThefrequencyofAAhomozygotictypeandMPO-463G/ApolymorphisminHanpeopleofAnhuiprovinceinfluencedtheriskofCAD.AallelehadprotectivefunctioninCAD.

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.