摘要
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.
出版日期
2013年01月11日（中国期刊网平台首次上网日期，不代表论文的发表时间）
