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1、泰山醫(yī)學(xué)院學(xué)報JOURNALOFTAISHANMEDICALCOLLEGEVo1.35No.42014261熊果酸對球囊損傷大鼠頸總動脈后內(nèi)膜增生及PCNA、NF—kB表達的影H向朱保成夏勇(1.徐州醫(yī)學(xué)院心血管研究所,江蘇徐州221002;2徐州醫(yī)學(xué)院附屬醫(yī)院心內(nèi)科,江蘇徐州221002)摘要:目的探討熊果酸對球囊損傷大鼠頸總動脈后血管內(nèi)膜的增生及增殖細胞核抗原(PCNA)、核因子kB(NF—kB)表達的影響。方法32只SD大鼠隨機分為假損傷組(對照組)、損傷組和熊果酸低劑量治療組、高劑量組治療組。對照組和模型組每天腹腔注射生理鹽水及藥物助溶劑1%DM
2、SO,熊果酸低劑量治療組、高劑量組治療組每天腹腔注射相應(yīng)藥物。分別在術(shù)后7d、21d取頸總動脈,通過組織學(xué)檢查、免疫組化結(jié)合圖象分析技術(shù)測定血管壁形態(tài)學(xué)變化及PCNA、NF—kB的表達情況。結(jié)果與損傷組相比,術(shù)后2l天熊果酸高、低劑量組內(nèi)膜增生面積及內(nèi)膜與中膜面積比均明顯減少(P<0.05)。與對照組比較,損傷組NF—kB、PCNA表達顯著增強(P<0.05);術(shù)后各時間點上熊果酸高、低劑量組較損傷組NF—KB表達明顯降低,差異有統(tǒng)計學(xué)意義(P<0.05)。結(jié)論熊果酸可抑制球囊損傷后血管新生內(nèi)膜增生,其作用機制可能與抑制NF—kB及PCNA表達有關(guān)。關(guān)鍵
3、詞:熊果酸;球囊損傷;內(nèi)膜增生;核因子kB;增殖細胞核抗原中圖分類號:R543.4文獻標(biāo)識碼:A文章編號:1004_7l15(2014)04-0261-04doi:10.3969/j.issn.1004-7115.2014.04.006EfectofursolieacidonneointimalhyperplasiaandcxpressionofPCNA、NF—KBafteraorticballooninjuryZHUBao—chengXIAYong2(1.TheCardiovascularInstituteofXuzhouMedicalCollege,
4、Xuzhou221002,China;2.Dept.ofCardiologyAfiliatedHospitalofXuzhouMedicalCollege,Xuzhou221002,China)Abstract:Objeetiveto:InvestigatetheefectofursolicacidonneointimalhyperplasiaandexpressionofPCNA、NF—kBteraorticballooninjury.MethodsThirty—twohealthymaleSDratswererandomlydi~dedintothe
5、sham—operated,thein-jurygroup,ursolicacid10mg/kginterventiongroup,ursolicacid20mg/kginterventiongroup.Sham—groupandinjury—groupthatreceivedequalvolumePBSincluding1%DMSO;ursolicacidlOmg/kgandursolieacid20mg/kgreceivedCOITe-sponodingursolieacideveryday.Carotidtissuesoffourgroupswer
6、eharvested7、21dayafterCarotidarteryinjury.ThetargetvascularsectionswerestmnedwithHEtoobservethemorphologychanges.TheexpressionofNF—kBandPCNAinarterialwallwasdetectdebyimmunolfistochemistry.Result:bothneointimalareaandIA/MAweresignificantlyreducedinursolieacidgroupascomparedtothat
7、ininjurygroupat21daypointsafterbalooninjury(P<0.05).Comparedwiththesham—group,theexpressionofNF—kBandPCNApositivecelsweresignificantlyincreasedintheinjurygroup(P<0.05).Corn—paredwiththeinjury—group,TheexpressionofNF—kBweresignificantlydecreasedinursolicacidgroupatdifferenttimepoi
8、ntsafterballooninjury(P<0.05).Conclusion