简介：ObjectivesToinvestigatethechangeandclinicalsignificanceofclopidogrelonplateletmembraneCD40Lincoronaryarterydiseasepatientsbeforeandafterpercutaneouscoronaryintervention(PCI).Methods30caseswhowerediagnosiscoronaryarterydiseases(CAD)bycoronaryangiography,meanage56±9yearsold.Allthepatientswhohadnoantiplateletaggregationcontraindication,weretreatedwithstandardantianginapectorisdrugs.BeforePCI,allthepatientstookclopidogrel75mgperday.ActivatedplateletmembraneCD40LexpressratewasmeasuredbyflowcytometrybeforeandafterPCI6hours.ResultsActivatedplateletmembraneCD40Lexpressratewere3.73±2.15and2.46±0.90,respectivelyin30patientsbeforeandafterPCI6hours.ActivatedplateletmembraneCD40LexpressratewassignificantlydecreaseafterPCI6hoursthanthatbeforePCI(P<0.01).ConclusionsClopidogrelhassignificanceeffectonplateletmembraneCD40LincoronaryarterydiseasepatientsundergoingPCI.Clopidogrelcansuppressionplateletactivationandpreventthromboembolismeventoccurrence.

简介：目的探讨中国重庆地区汉族人群OX40配体蛋白基因(TNFSF4)单核苷酸多态性与冠心病的关系。方法提取262例冠心病患者和191例对照者的基因组DNA,采用Taqman实时荧光定量PCR法检测TNFSF4rs3850641(A/G)单核苷酸多态性。结果重庆地区汉族人群中存在TNFSF4rs3850641(A/G)单核苷酸多态性,冠心病组中基因型分布为:AA型70.5%,AG型22.0%、GG型7.5%;对照组基因型分布为:AA型69.8%,AG型20.8%、GG型9.4%。冠心病组和对照组之间的基因型频率和等位基因频率均无显著性差异(P>0.05)。结论OX40L基因rs3850641(A/G)单核苷酸多态性与中国重庆地区汉族人群冠心病发病无关。

简介：

简介：目的:观察血小板表面活性蛋白即血小板颗粒膜蛋白(CD63)、溶酶体膜蛋白(CD62P)及血浆C-反应蛋白(C-RP)在不稳定型心绞痛(UAP)发生、发展中的作用及灯盏花的影响.方法:59例UAP患者随机分成灯盏花组(32例)及抵克力得组(27例),并对照观察治疗8周前、后血小板CD63、CD62P及血浆C-RP水平的变化.结果:(1)与健康人及稳定性心绞痛(SAP)对照组比较,UAP患者血小板CD63、CD62P及血浆C-RP水平明显升高(P<0.05,P<0.01);(2)治疗8周后,灯盏花及抵克力得组CD63、CD62P及血浆C-RP测定值分别显著低于治疗前水平(P<0.05,P<0.01),且两组上述各指标水平差异无显著性.结论:血小板活化及炎症反应物在UAP发生及发展过程中起着重要的作用,灯盏花抗血小板活化及减轻炎症反应的突出作用对预防急性冠状动脉综合症的发生和发展有极其重要的临床意义.

简介：目的探讨血小板激活在高血压病与冠心病患者的意义.方法测定正常人和高血压病与冠心病患者血小板表面CD41、CD62p,患者分成A、B、C三组,A组为未经抗血小板治疗的高血压病与冠心病患者37例,B组为正常对照组11例,C组为经抗血小板药治疗的高血压与冠心病患者28例.均取晨空腹静脉血3ml,用FACSCalibur流式细胞仪分析.结果A组CD41、CD41荧光强度和CD62p均高于B组(P＜005),C组的CD41、CD41荧光强度、CD62p均低于A组(P＜005).高血压病组与冠心病组的相关指标比较无显著性差异.结论高血压病与冠心病患者的血小板活化和激活增强,而抗血小板药物(阿司匹林或抵克立得)能抑制血小板激活.

简介：我们于1997年7月至2001年7月应用肝素治疗急性脑梗死取得较好疗效,现分析报告如下:

简介：高血压是一种常见的疾病，在我国慢性非传染性疾病中位列第一，患病率仍在迅速上升，与此相对，我国人群高血压的知晓率、控制率和治疗率仍处于较差水平。

简介：近年来紫薯因其口感软糯甘甜而深受喜爱。但网上经常有这样的声音：紫薯是转基因食品，不能吃。其实紫薯不是转基因食品，而是一种有营养价值的薯类。紫薯，又名黑薯、紫甘薯、紫红薯，和我们常吃的红心红薯、白心甘薯一样都是天然薯类。目前我国各地栽培的紫薯品种有山川紫、美国黑薯、德国黑薯等。

简介：血管性痴呆（VD）是指在缺血性、出血性及慢性缺血缺氧性脑血管病引起的脑组织损害基础上产生的以高级神经认知功能障碍为主的一组临床综合征。在我国，老年人血管性痴呆患病率为324／10万，城市高于农村。随着社会人群的老龄化，VD的发病率逐年上升，严重影响老年人的生存与生活质量，给社会和家庭带来沉重的负担。近年研究表明VD是一种可防治性的疾病，早期发现并干预危险因素可减少或延缓VD的发生。现将我院诊治的老年VD患者40例临床特点分析如下：

简介：目的心血管造影的记录方法有AOT、录像、激光照片、电影片、CD-R等多种.本文着重介绍电影片记录与CD-R记录方法的比较.

简介：BackgroundAtrialfibrillation(AF)isthemostcommonsustainedcardiacarrhythmiawithouteffectivetreatment.AFisassociatedwithatrialconductiondisturbancescausedbyelectricaland/orstructuralremodel-ing.Buttheroleofconnexin(Cx)43intheregulationofLtypecalciumchannel(LCC)remainsunclear.WehypothesizedthatCx43mightco-localizeandregulatetheLtypecalciumchannelcurrent(ICa,L).MethodsReal-timePCRandwhole-cellpatchclampwereusedtodetecttheexpressionofLCC1csubunitandthecurrentdensityofICa,L,beforeandafterCx43knockingdownrespectively.Theco-localizationofCx43withLCCwasinvestigatedbyco-immunoprecipitationandconfocalmicroscopy.ResultsKnockingdownofCx43significantlyinhibitedthecurrentdensityofICa,LthroughdecreasingthegeneexpressionofLCCα1cinculturedatrium-derivedmyocytes(HL-1cells).Cx43co-localizedwithLCCα1csubunitinatrialmyocytes.ConclusionsCx43regulatestheICa,LinatrialmyoctyesthroughLCC,representingapotentialpathogenicmechanisminatrialarrhythmias.

简介：ObjectivesTheeffectsofcarvediloloncalciumcurrent(ICa)wereinvestigatedinisolatedadultratventricularmyocytes.MethodsICawasrecordedbyusingwhole-cellpatch-clamprecordingtechnique.ResultsCarvedilolreversiblyinhibitedICainaconcentration-dependentmanner,carvedilolat0.1,0.3,1and10μmol/LintheextracellularsolutiondecreasedpeakICaby1.52%,18.04%,37.34%and72.18%,respectively.Thesteady-stateinactivationcurveofICawasshiftedtomorenegativepotentials,whiletheactivationcurvewasnotaltered.Therecoveryfrominactivationwasshiftedtorightdirection,itcouldnotberecoveredcompletely.Inaddition,Pretreatmentofventricularmyocyteswithprazosinandpropranololcouldn'tblockthecarvedilol-inducedreductionofICa.ConclusionsCarvedilolinhibitsICainadultratventricularmyocytesbymechanismsinvolvingpreferentialinteractionwiththeinactivatedstateofcalciumchannel.

简介：

简介：ObjectivesToevaluateantihypertensiveefficiencyandsafetyofanewdomesticofL-&N-typeCa^2+antagonist-eilnidipinewithimidaprilasapositivecontrol.MethodsAfter2weeks'placebowashingout,22patientsweretreatedwitheilnidipine5mgdailyand27patientsweretreatedwithimidapril5mgdaily.4weekslater,ifpatient'ssittingdiastolicbloodpressureisover90mmHg,his/herdosagewasdoubledforanother4weeks,theothersmeasuringupremainedtheirdosageunchangedforanother4weeks.Bloodpressure,heartrate,bloodandurineroutineexamination,serumglucose,serumchemicalexaminationincludingtotalcholesterol,triglyceride,HDL,LDL,transaminase,creatineetcandsidereactionswererecordedbeforeandafterthetrial.Datawereanalyzedstatistically.ResultsAfter8weeks'treatment,bloodpressurewassignificantlydecreased(P<0.05)inbothgroups,andthetwomedicineshadsimilarantihypertensiveeffects.Furthermore,thereducingofheartratewasstatisticallysignificantcomparedwithbaseline(P<0.01)inthecilnidipinegroup,butnotintheimidaprilgroup.Thenegativechronotropiceffectofcilnidipinehadlittleeffectoncontinuingthetherapy.Therewerenochangesonbloodandurineroutineexaminationandserumlipid,serumglucose,creatine,transaminaseandetcinbothgroups.Theirsidereactionsweremildandwell-tolerated.ConclusionsCilnidipinehasacon-vincingantihypertensiveeffectsimilartothatofimi-dapril.Especiallycilnidipinemaybeadministeredtopatientswithrelativelymildtachycardia.

简介：Intherecentpast,bonemarrow(BM)-derivedcellshavebeenusedtoregeneratedamagedcardiovasculartissuespostmyocardialinfarction(MI).Recentclinicaltrialshaveshowncontroversialresultsinrecoveringdamagedcardiactissue.Newprogresshasshownthattheunderlyingmechanismsofcell-basedtherapyreliesmoreheavilyonhumoralandparacrineeffectsratherthanonnewtissuegeneration.However,studieshavealsoreportedthepotentialofnewendothelialcellgenerationfromBMcells.Thus,effortshavebeenmadetoidentifycellshavinghigherhumoralortherapeuticeffectsaswellastheirsurfacemarkers.Specifically,BM-derivedCD31~+cellswereisolatedbyasurfacemarkeranddemonstratedhighangio-vasculogeniceffects.IwillpresentrecentadvancesinthetherapeuticuseofBM-derivedcellsandtheusefulnessofCD31~+cellsasanextgenerationcelltherapy.

简介：患者女,66岁。1年前无明显原因出现发作性心前区不适,无心悸、胸闷、头昏、黑蒙等。无高血压、冠心病(冠状动脉造影阴性)及糖尿病等病史。常规心电图(图略),P波顺序出现,P—R间期0.28s,P—P间期0.85s,心率72次/min,一度房室阻滞。发病时心电图(图1)示,P_(1-9)为窦性P波,P—P间

简介：德国研究人员在老鼠身上发现一个可以减缓衰老和心脏病发作后心肌细胞死亡的特殊基因。他们确定在老年老鼠中更低活性和心脏病发作后积极性减弱的基因名称为PNUTS。通过提高PNUTS基因的活性，研究队伍减缓小鼠衰老心肌，也降低了心脏病发作后心脏肌肉的受损。该研究发表于《自然》杂志上。

简介：目的探讨L－精氨酸治疗心肌缺血患者的次极量运动试验结果的改善作用。方法用药前后行次极量运动试验观察心肌缺血情况。结果L-精氨酸治疗后运动应激对冠脉血流明显好转。结论L－精氨酸具有缓冲缺血性心脏病在次极量运动负荷时交感神经张力过度增高而导致的心肌缺血的作用。

简介：ObjectivesToinvestigateeffectofAngll,captoprilonsingleguineamyocytesonL-typecalciumcurrentandsodiumcurrent.MethodsMembranepatchclampwholecellrecordingtechniquewasusedtoinvestigateeffectofangll,captoprilonL-Camaximumcurrentdensityandsodiummaximumcurrentdensity.ResutlsAngllincreasedthemaximumcurrentdensitycomparedwithcontrolafterperfused5min,357.7±219.7Vs279.5±240.5PA/PF,increaserateis27.9%,theshapeofcurrent-voltagerelationshipcurvewasunchanged,peakedat+10mv,indicatedthatangllincreasedL-Cacurrentdensityinvoltage-dependent.Afterperfusedwithcaptopril,captopril+angll3,5min,L-Cacurrentwasrecorded,resultssuggestL-Camaximumcurrentdensitydecreasedsignificantlycomparedwithcontrol,incaptoprilgroup,128.4±92.6Vs286.2±89.7,66.7±68.3Vs286.2±89.7,respectively,rateofinhibitionis55.1%,76.6%,respectively.L-Cacurrentfurtherdecreasedincaptoprilpe

简介：随着社会进步及人民生活水平的日益提高,心血管疾病已经成为威胁我国人民身心健康的主要疾病之一,因此,对心血管疾病的预防与治疗就具有极其重要的现实意义.近年来,无论基础还是临床,这方面均有长足进展,在这其中,基因治疗因其巨大的发展潜力和广阔的应用前景而受到普遍的重视.