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:目的研究ApoB/A1比值与冠状动脉支架内再狭窄发生率的相关性.方法选取182例行冠状动脉支架置入术并于48~52周后复查冠状动脉造影患者,分别于支架置入术前及1年后复查时检测TC、LDL、HDL、TG、LP(a)、LDL/HDL、ApoB、ApoA1、ApoB/A1比值,并进行比较分析,统计介入治疗所在冠脉病变的最小管腔内径、参考血管内径、管腔狭窄率、管腔病变长度和管腔病变内径.结果①1年后随访时支架内再狭窄组的ApoB/A1比值和ApoB水平显著高于无狭窄组[(0.87±0.25)比(0.75±0.23),P〈0.01,(0.85±0.24)g/L比(0.77±0.24)g/L,P〈0.05)].②高水平ApoB/A1组(ApoB/A1>1)支架内再狭窄的发生率(67.7%)显著高于中等水平(1.0>ApoB/A1>0.7)及低水平(ApoB/A1〈0.7)ApoB/A1组支架内再狭窄发生率(P〈0.05),其中中等水平组支架内再狭窄发生率为32.7%,低水平组的发生率为11.1%.③多因素回归分析显示,冠心病患者支架置入术后1年随访时高水平ApoB/A1是支架内再狭窄发生的独立危险因素(P〈0.01,风险比2.40,95%可信区间2.206~3.078).结论高水平ApoB/A1比值是冠状动脉支架内再狭窄发生的独立危险因素.
简介:目的探讨载脂蛋白A1(apolipoproteinA1,ApoA1)/载脂蛋白B(apolipoproteinB,ApoB)比值与冠状动脉狭窄严重程度的关系。方法应用冠脉造影技术将120例患者分2组:冠心病组与对照组。测定ApoA1和ApoB,并计算出比值,探讨其与冠脉病变记分(css)00关系。结果冠心病组ApoA1/ApoB比值明显低于对照组(P〈0.01),ApoA1/ApoB比值与CSS呈负相关(P〈0.05).结论ApoA1/ApoB比值与冠状动脉狭窄严重程度呈负相关。
简介:目的分析血清低密度脂蛋白胆固醇(LDL-C)、膜联蛋白A1(AnnexinA1)水平和冠状动脉粥样硬化性心脏病(冠心病)患者冠状动脉(冠脉)狭窄程度关系。方法将150例冠心病患者按不同类型、冠脉病变支数及Gensini评分进行分组,并选择同期门诊健康体检者23例为对照组。比较各组血清LDL-C、AnnexinA1水平,并分析其与冠脉狭窄程度的相关性。结果急性心肌梗死(AMI)组血清LDL-C、AnnexinA1水平均高于不稳定型心绞痛(UAP)组,UAP组血清LDL-C、AnnexinA1水平高于稳定型心绞痛(SAP),SAP组血清LDL-C、AnnexinA1水平高于对照组,差异有统计学意义(P<0.05)。冠脉支数多支组血清LDL-C、AnnexinA1水平高于双支组,双支组血清LDL-C、AnnexinA1水平高于单支组(P<0.05)。Gensini评分>60分组血清LDL-C、AnnexinA1水平高于30~60分组,Gensini评分30~60分组血清LDL-C、AnnexinA1水平高于<30分组,差异有统计学意义(P<0.05)。Gensini评分与LDL-C、AnnexinA1水平呈正相关,r值分别为0.431、0.489,P均<0.05。结论LDL-C、AnnexinA1升高可能与冠脉狭窄程度相关,有助于病情评估及指导治疗。
简介:目的通过分析明确载脂蛋白B/载脂蛋白A1(ApoB/ApoA1比值在评估糖尿病合并冠心病患者冠状动脉病变严重程度中的作用。方法选择行冠状动脉造影确诊的糖尿病合并冠心病的患者(n=261),依据ApoB/ApoA1比值的均值分为高比值组(n=125)和低比值组(n=136),比较两组间一般临床资料、生化、冠状动脉Syntax评分等指标,分析ApoB/ApoA1比值与冠状动脉病变严重程度的关系。结果(1)两组患者基本特征差异无统计学意义,ApoB/ApoA1高比值组低密度脂蛋白胆固醇(LDL-C)和血清总胆固醇(TC)高于低比值组(P〉0.05),而ApoA1水平低于低比值组(P〈0.05),同时,中重度冠状动脉病变多于低比值组(P〈0.05)。(2)随着冠状动脉病变程度的加重,TC、LDL-C、ApoB、ApoB/ApoA1比值逐渐升高,ApoA1逐渐降低,P〈0.05。(3)糖尿病合并冠心病人群的血管病变Syntax评分与ApoA1水平呈负相关(r=-0.42,P〈0.05),与TC、LDL-C、ApoB、ApoB/ApoA1比值呈正相关(r=0.47,0.51,0.62,0.66,P〈0.05)。结论糖尿病合并冠心病患者ApoB/ApoA1比值升高,与冠状动脉Syntax评分呈正相关,能较好地反映冠状动脉病变严重程度。
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: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: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: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.