简介:目的观察脑出血后LINGO-1表达的变化,探讨维甲酸对脑出血后LINGO-1表达的影响。方法将72只SD大鼠随机分为假手术组、模型组和维甲酸治疗组,选取造模后1d、3d、7d和14d为观察点。制备脑出血模型,Longa评分法评价神经功能缺损程度,RT-PCR法检测LINGO-1mRNA的表达,Westernblot法检测LINGO-1蛋白的表达。结果模型组Longa评分7d最高,14d出现下降;LONG-1mRNA3d表达最高,7-14d出现下降;LONG-1蛋白7d到高峰,14d出现下降。维甲酸治疗组在14dLonga评分较模型组下降(P〈0.05);在7d和14dLINGO-1mRNA表达较模型组下降(P〈0.05);在14dLINGO-1蛋白表达较模型组下降(P〈0.05)。结论脑出血后LINGO-1表达明显上调,呈先上升后下降的变化规律。维甲酸可以降低LINGO-1mRNA和蛋白的表达及神经功能评分。
简介:BackgroundNowadays,thestudiesmainlyfocusonthefunctionofdecreasingtheinflammatoryfactorandimprovingthefunctionsofendothelium,buttheeffectsofstatinsonventricularremodelingarerarelystudied.MethodsThe2-kindey,1-cliphypertensiverats(2K1C,Goldblatt)werepreparedwithSprague-Dawley(SD)rat.SDratswererandomlydividedintothreegroups:controlrats,hypertensiveratsandhypertensiveratstreatedwithatorvastatin(2mg·kg-1·d-1).After6weeks,systolicbloodpressure(SBP)wasmeasuredusingthetail-cuffmethod.TheplasmaconcentrationofangiotensinⅡandreninactivityweredeterminedbyradioimmunoassay.Theheartweight,theratioofleftventricularweightandbodyweightwascalculated.ResultsTheplasmaconcentrationofangiotensinⅡ(106.4±7.8)ng/Landreninactivity(20.6±2.4)ng/Lweresignificantlyincreaedinhypertensiveratscomparedwithnormalrats[(72.3±5.4)ng/Land(12.5±3.7)ng/L](P<0.01).Theheartweight(1.46±0.09)g,theratio3.54±0.19(×10-3)ofleftventricularweightandbodyweightinhypertensiveratswereobviouslyhigherthanthatinnormalrats[(0.98±0.07)gand(2.28±0.06)×10-3](P<0.01).Aftertreatmentwithatorvastatin,theplasmaconcentrationofangiotensinⅡ(68.3±6.9)ng/Landreninactivity(8.7±2.3)ng/L,heartweight(1.05±0.04)g,theratio2.36±0.07(×10-3)aboveweredecreasedsignificantly,therewerenodifferencebetweenthegroupofhypertensiveratsandthenormal.ConclusionsAtorvastatincandecreasetheratioofleftventricularweightandbodyweightandhastheeffectsoncardiovascularremodelinginhypertensiverats.
简介:Thestudyaimedtoinvestigatetheeffectsofivabradineonthelevelsofhypoxia-induciblefactor-1alpha(HIF-1α)andVEGFinserumofrabbitwithacutemyocardialinfarction(AMI).MethodsAMImodelwasestablishedbyligatingtheleftanteriordescendingbranchofthecoronaryarteryinNewZealandwhiterabbits.Twentyfiverabbitswererandomlydividedinto4groups:sham-operated(S),myocardial-infarction(M)withbisoprololtreatment(M+B)andivabradine-treated(I+M).Themedicaltreatmentbeganimmediatelyafterinfarctionandcontinuedfor3weeks.Serumofeachrabbitwasobtainedatthefollowingtimepoints(24hbeforetheoperation,24h,3d,1week,2weeksand3weeksaftertheoperation).ELISAwasusedtomeasurethelevelsofHIF-1αandVEGFofeachsample.ECGandheartrates(beforeandaftertreatment)wereanalyzed.ResultsBaselineheartrateshowednosignificantdifferencesbetweenthe3infarctedgroups(M,M+B,M+I).ThreeweekslatertheheartratesweresignificantlyloweringroupM+BandgroupM+IthaningroupM.However,therewasnostatisticdifferencebetweenthetwodrug-treatedgroups(P=0.848).ThelevelsofHIF-1αandVEGFingroupsM,M+BandM+I)increasedsignificantlycomparedwithgroupS(P<0.01).TheproductionsofHIF-1αandVEGFwereloweringroupM+BandgroupM+IcomparedwithgroupM(P<0.01).TherewasnostatisticaldifferencebetweenthegroupM+BandgroupM+I(P>0.05),andthecorrelativeanalysisrevealedthattheproductionofHIF-1αwaspositivelycorrelatedwiththatofVEGF(r=0.732,P<0.01).ConclusionIvabradinecanreduceheartrateandmeanwhiledecreasetheserumlevelsofHIF-1αandVEGFafterAMI.
简介:目的报道保留轨道导丝在先天性心脏病介入治疗中的体会。方法在先天性心脏病介入治疗中保留轨道导丝放置封堵器,评估封堵器位置、形态、大小和对周边结构影响,确定封堵效果后再退除导丝。结果110例先天性心脏病患者,男46例,女64例,年龄(6±2.3)岁;室间隔缺损104例,动脉导管未闭封堵术后再封堵3例,肺动静脉漏2例,主动脉窦瘤破裂1例,有5例室间隔缺损封堵术中更换封堵器,1例更换输送鞘管;技术成功率100%,无并发症发生。结论(1)在先天性心脏病介入治疗中保留轨道导丝放置封堵器安全可行;(2)选择输送鞘管尽可能大一号,退除导丝时尽可能使导管和鞘管靠近,避免产生切割现象;(3)可节省时间,减少出血;(4)减少血管刺激所致并发症发生。
简介:目的研究血小板内皮细胞黏附分子1(PECAM1)、平滑肌蛋白1(LMOD1)基因多态性位点与缺血性卒中患者颈动脉斑块易损风险的关系。方法前瞻性纳入自2014年5月至2017年10月于北京天坛医院就诊的具有颈动脉斑块的缺血性卒中患者,采集人口统计学资料及相关临床信息,采用颈动脉高分辨MRI区分易损及稳定斑块,依次纳入易损斑块组与稳定斑块组。利用实时聚合酶链反应方法,使用TaqMan探针对易损斑块组及稳定斑块组患者PECAM1、LMOD1基因多态性位点rs1867624、rs2820315进行基因分型并进行统计学分析。采用二分类Logistic回归分析探讨影响颈动脉粥样硬化斑块易损性的危险因素。结果共纳入具有颈动脉斑块的缺血性卒中患者270例,其中189例具有易损斑块,81例具有稳定斑块。对两组患者PECAM1基因rs1867624位点的多态性分析显示,等位基因T是易损性斑块风险基因,其基因频率在易损斑块组、稳定斑块组中分别为87.3%(330/378)、79.6%(129/162;OR=1.759,95%CI:1.080~2.864,P=0.022)。对LMOD1基因SNP位点rs2820315的分析显示,等位基因C是易损性斑块的危险基因,其基因频率在易损斑块组、稳定斑块组中分别中为87.6%(331/378)、80.9%(131/162;OR=1.667,95%CI:1.014~2.738,P=0.042)。Logistic回归分析结果显示,年龄(OR=1.069,95%CI:1.022~1.118,P=0.004)、PECAM1基因rs1867624位点T/T基因型(OR=2.202,95%CI:1.035~4.688,P=0.041)和LMOD1基因rs2820315位点C/C基因型(OR=2.199,95%CI:1.005~4.809,P=0.048)是形成易损性斑块的风险因素。结论PECAM1基因单核苷酸多态性位点rs1867624、LMOD1基因单核苷酸多态性位点rs2820315与颈动脉斑块易损性相关。
简介:目的分析冠状动脉支架术后再狭窄(in-stentrestenosis,ISR)血管重构与脂联素(adiponectin,APN)、高敏C反应蛋白(high-sensitiveC-reactiveprotein,hs-CRP)和内皮功能的相关性关系。方法60例行经皮冠状动脉支架术治疗的冠状动脉粥样硬化性心脏病(冠心病)患者根据术后是否出现ISR分为ISR组(n=30例)和对照组(n=30例)。采用酶联免疫吸附试验检测两组患者治疗前、后血清APN、hs-CRP浓度;采用血管内超声成像系统和彩色多普勒超声诊断仪检测冠状动脉重构指数(remodelingindex,RI)和内皮依赖性舒张功能(flowmediateddilation,FMD),分析RI与血清APN、hs-CRP浓度及FMD的相关性。结果ISR组治疗后血清hs-CRP浓度明显高于非ISR组,差异有统计学意义(P〈0.05);而血清APN浓度及RI、FMD明显低于对照组,差异有统计学意义(P〈0.05);RI与血清APN浓度及FMD呈显著正相关性关系(r=0.547,P〈0.05;r=0.428,P〈0.05);与血清hs-CRP浓度呈显著负相关性关系(r=-0.602,P〈0.05)。结论血清APN、内皮功能及炎症因子与ISR的发生、发展有着密切的相关性。