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：目的探讨X综合征患者QT离散度(QTd)改变意义.方法对21例(A组)X综合征患者QTd与20例(B组)正常健康人进行对比.结果A组QTmax、QTmax与B组比较差异有显著性(P＜0.05),而QTd、QTcd无明显差异(P＞0.05).结论X综合征有慢性交感神经系统张力增高,临床选用肾上腺素能受体阻滞剂治疗有一定帮助.

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简介：BackgroundTheremaybedysregulationofcirculatingmicroRNAsinacutemyocardialinfarction(AMI),whichisanaging-relatedprocess.However,thedifferencebetweenyoungandelderlypeopleinexpressionlevelofcirculatingmiR-21inAMIpatientshasnotbeeninvestigated.MethodsThestudyincluded72consecutivepatientswithAMI.ThegroupIconsistedof43patientsagedequaltoorabove65yearsandthegroupIIconsistedof29patientsagedequaltoorbelow45years.Real-timeRT-PCRwasappliedtodetectserummiR-21expressionlevelsatthetimeofmechanicalreperfusionand12h,D1,D3andD7afterPCI,respectively.ResultsTheexpressionlevelofmiR-21inAMIpatientsincreasedmarkedly12hafterPCIandreachedthepeakatD1afterPCIinbothgroups.TherewasnodifferenceofmiR-21expressionbetweenGroupⅠandⅡatthetimeofmechanicalreperfusion(5.12±0.73vs.4.98±0.87)andD7afterPCI(1.28±0.75vs.1.94±0.89),However,groupⅠpatientsexhibitedhighermiR-21expressionlevelthangroupⅡat12h(7.96±0.78vs.4.23±0.77,P<0.05),D1(9.32±0.89vs.6.12±0.92,P<0.05)andD3(4.78±0.91vs.2.97±0.77,P<0.05)afterPCI,respectively.ConclusionOurdatarevealanincreaseofmiR-21inpatientswithAMImaybeamechanismofmyocardialischemiareperfusioninjury.TheexpressionofmiR-21wasrelatedtothedevelopmentandprogressionofAMI,andthereisanage-relatedchangeintheexpressionofmiR-21inacutemyocardialinfarctionpatients.

简介：目的探讨中心分流术在治疗重症法洛四联症(tetralogyofFallot,TOF)中的应用,评价其手术效果.方法回顾性分析21例应用Gore-Tex管(膨体聚四氟乙烯人工血管)行升主动脉到主肺动脉中心分流手术的TOF患者的临床资料.着重分析手术方法、手术结果及术后随访.结果手术死亡2例,术后3d内分别死于低心排血量综合征和肺水肿,病死率9.5%(2/21).12例于术后6个月～24个月内行二期手术根治,无死亡患者.根治术中无发现Gore-Tex管堵塞者.术后动脉血氧饱和度及动脉血氧分压比术前显著改善[90.0%±4.0%比60.0%±5.05%,P<0.01;(53.4±14.1)mmHg比(42.2±8.8)mmHg,P<0.01].12例患者二期根治术时与中心分流术时比较,左心室及肺动脉发育均明显改善.结论中心分流术是改善重症法洛四联症症状、体征可供选择的手术方式,是重症法洛四联症根治术的一种良好的分期手术方式.

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简介：患者男，74岁，临床诊断：冠心病。心电图(图1)示窦性P波在同一导联形态相同，在V3导联呈双峰，峰距0.04s，PP间距不等，在Ⅱ导联上相差最大0.12s，每隔2个P波后跟……

简介：目的探讨甲型H1N1流感患者心脏损害的特点。方法回顾性研究分析2009年7月至2010年1月期间确诊为甲型H1N1流感患者172例的临床资料，所有患者根据病情分为轻症组，重症组，危重症组，并收集非甲型H1N1流感患者21例作为对照。大部分患者接受分子生物学检测磷酸肌酸激酶，磷酸肌酸激酶同工酶，高敏C反应蛋白，并接受胸部X线摄片检查，计算心胸比。结果甲型H1N1流感多发生于青壮年患者，轻症患者较重症患者更年轻（P＜0.05）。在危重症患者中，磷酸肌酸激酶，磷酸肌酸激酶同工酶，高敏C反应蛋白和心胸比均较其他组高（P＜0.05或P＜0.01）。1例死于心肌损害。结论与既往研究相符，2009甲型H1N1流感可以导致心肌损害，特别是在危重症患者中心肌损害较显著，从而将导致心脏扩大等损害，导致死亡率升高。

简介：ObjectivesToexploretheprotectiveeffectofirbesartan(Irb)undertheinterferencewithangiotensinⅡ(AngⅡ)onABCA1.MethodsElectronmicroscopywasusedtodetectthemorphousoffoamcells.TheexpressionofABCA1mRNAanditsproteinweredeterminedbyRT-PCRandWesternblotting,respectively.Thevarianceofcellularcholesterolcontentwasmeasuredbyzymochemistryvia-fluorospectrophotometer.ResultsApositivefacilitativeeffectofAngⅡontheformationoffoamcellswasobserved.TotalcholesterolwasincreasedsignificantlybyAngⅡ,theexpressionofABCA1wasdown-regulatedobviouslybyAngⅡ;IrbcouldprotectABCA1againstthelesionofAngⅡ;TotalcellularcholesterolcontentwasreducedsignificantlyinIrb+AngⅡgroup;However,considerablealterationaboutthecholesterolcontentandtheexpressionofABCA1werenotobservedinIrbgroupwithoutincubationwithAngⅡ.ConclusionsIrbcouldprotectABCA1againstthelesionofAngⅡ,whichmaycontributetoitsanti-atheroscleroticproperties.

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：患者男,35岁.临床诊断心肌炎.图为Ⅱ导联记录.可见P波顺序出现,正向传导,P-R间期0.16s,窦性P-P间期较规则为:0.80s.图中可见数组P波已经脱离了生理不应期,但是仍然出现传导迟延(上行P13P-R间期为0.36s;中行P5p-R间期为0.32s,下行P9P-R间期为0.32s)和传导中断(中行图R5、R6之后,下行Rt之后).

简介：患者男性，79岁。4年前出现活动后胸闷、气短，经休息或口服利尿剂缓解，无典型心绞痛症状，未经系统治疗。于2004年12月气短加重，不能平卧。心电图（ECG）（图1A）示：P波顺序出现，Ⅰ、Ⅱ、Ⅲ、aVF、V6导联直立，aVR导联倒置，其振幅、时间均正常，ST—T改变（ST1、aVL、V4-V6呈下斜型下移达0．3mV，TI、aVL、V4-V6倒置0．2～0．5mV）。

简介：正常成年人12导联心电图的V1导联呈rS型。当V1导联以R波为主或R/S〉1时,临床可见于完全性右束支阻滞、后壁心肌梗死、右心室肥大、肥厚型心肌病、右位心、A型心室预激及正常变异等多种情况。本文结合心电图与心电向量图,对V1导联R/S〉1的几种表现进行分析总结。

简介：T1mappingusingcardiovascularmagneticresonance(CMR)introducesnoveltechniquesformyocardialtissuecharacterizationtodetectandquantifydiseaseprocessesoccurringatthemicroscopiclevel.EventhoughT1mappinghaslimitedspatialresolution,cellularandmolecularchangesoccurringwithineachvoxelcanaffecttheaggregateT1signalrenderingthemquantifiable.TheestimatedT1-basedparametersquantifiedona“map”demonstratethespatiallocalizationofthesechangeswherebyeachpixelexpressesthequantitativevalueofthatparameter.Thisquantificationpermitsdetectionofdiffusediseaseevenifitisnotdirectlyvisible.Ratherthanrelyingonnonspecificfunctionalmeasures,T1mappingfocusesonintrinsicchangesofmyocardialcompositionthatadvancesunderstandingaboutspecificdiseasepathways.Thesechangesinmyocardialtissuecompositioninformdiagnosisandprognosis.T1mappingencompassestwokeyparameters:native(i.e.,precontrast)T1andextracellularvolumefraction(ECV)derivedfromadditionalpostcontrastT1andbloodT1measurements.Theseadvancesintroducenewtoolstodetectfocalanddiffusemyocardialderangementsoccurringincardiacdiseasethatcanbeotherwisedifficulttodetect.T1andECVmappingfosterprecisionmedicineandpersonalizedcare,promisingtoimprovepatientoutcomesthroughtargetedtherapy.CapitalizingontheopportunitiesintroducedbyT1mappingandECVrequiresfurtherinvestigation.

简介：患者女性，45岁，主因“发作性心悸10年，加重9h”于2015年4月3日入院。既往白塞病史20年，间断出现口腔溃疡，反复外阴溃疡，针刺试验（+）。9:30出现心悸，持续无缓解，伴头晕、头痛，无胸痛、气短，就诊于当地医院，测血压60/45mmHg（1mmHg=0.133kPa），给予药物处理后（具体用药不详）急诊转入我院。

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简介：BackgroundCoronarymicroembolization(CME)ischaracterizedbydistalmicrovascularocclusion.However,theinflammatorymechanismsandtherapeutictargetsofCMEarelargelyunknown.MethodsAtotalof11GuangxiBamaminiatureswinesweredividedintotwogroups:sham(n=5)andCME(n=6).MicrosphereswereinjectedintotheleftanteriordescendingarteryoftheCMEgrouptomakeananimalmodelofCME.TheexpressionsofmicroRNA-146a(miR-146a)andIRAK1,TRAF6,andAUF1inthemyocardiumweredetectedbyqPCR.ResultsIntheCMEgroup,microspheres,microinfarction,andinflammatorycellinfiltrationwerefoundunderanopticalmicroscope.TheexpressionlevelsofmiR-146awerelowinbothgroups.AfterCME,theexpressionlevelsofIRAK1,TRAF6,andAUF1intheCMEgroupwereupregulatedcomparedwiththoseintheshamgroup(P<0.01;P<0.05;P<0.05,respectively).ConclusionsAUF1,IRAK1andTRAF6,butnotmiR-146a,couldbeinvolved,inmyocardiuminflammationfollowingCME.

简介：慢性阻塞性肺疾病（COPD）发病率和死亡率极高，预计在2020年将成为全球第3大致死病因，COPD的进展导致肺动脉高压（PAH），其主要机制为缺氧性肺血管收缩、肺血管内皮功能失调和肺血管重塑。本研究旨在通过检测PAH患者血清ET-1、

简介：BackgroundEssentialhypertension(EH)hasbecomethemostcommonchronicnon-infectiousepidemicandisoneofthemostcommonriskfactorsforthedamagetoheart,brain,kidneyandotherorgans.TheserumlevelsofICAM-1,IGF-1andIL-8playimportantrolesinthepathogenesisofEH.MethodsInthemedicalcheck-upcenteroftheAffiliatedHospitalofQingdaoUniversityMedicalCollege,sixtynormaloffspringwithafamilyhistoryofEHwererandomlyrecruitedintotwogroups:30offspringwithafatherormothersufferingfromEHassingle-parentgroup,and30offspringwithbothparentssufferingfromEHasdouble-parentgroup,andanother30normaloffspringwhoseparentsdidnotsufferfromEHascontrolgroup.TheserumlevelsofICAM-1,IGF-1andIL-8weredeterminedbyenzyme-linkedimmunosorbentassay(ELISA).ResultTheserumlevelsofICAM-1,IGF-1andIL-8weresignificantlyhigherinbothsingle-parentgroupanddouble-parentgroupthaninthecontrolgroup(P<0.05),andtheserumlevelsofICAM-1,IGF-1andIL-8werehigherinthedouble-parentgroupthaninthesingle-parentgroup(P<0.05).TheserumlevelsofICAM-1,IGF-1andIL-8werepositivelycorrelatedwiththeseverityofbloodpressureelevation(r=0.375,r=0.465,r=0.326,P<0.05,P<0.01,P<0.05respectively).ConclusionsDuetotheinfluenceofheredity,theseruminflammatoryfactorcontentsinnormaloffspringwithEHfamilyhistorymayincreasebeforebloodpressurerise.DetectionofseruminflammatoryfactorsinhealthyoffspringwithafamilyhistoryofEHcouldpredictoccurrenceofhypertension,andprovideamorereliablebasisfortheprimarypreventionofhypertension.

简介：目的:探讨血清转化生长因子(TGF-β1)和胰岛素样生长因子(IGF-1)水平对冠心病患者心功能的影响.方法:选择因胸痛住院患者88例分为急性心肌梗死(AMI)组、心绞痛(AP)组和对照组,填调查表,入院择日行选择性冠状动脉造影术,术前采股动脉血,以ABC双抗体夹心ELISA法检测血清TGF-β1和IGF-1浓度,入院2周内完成超声心动图,所有资料用SPSS10.0软件处理.结果:AMI患者与AP患者相比,血清TGF-β1浓度较低(P<0.05),IGF-1血清浓度较低(P<0.001);冠心病患者血清IGF-1水平与EF(P<0.05)和FS(P<0.02)正相关.结论:TGF-β1和IGF-1对冠心病患者具有某种保护作用,其中IGF-1能保护冠心病患者的心功能.