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时间:2020-05-14
《姜黄素对大鼠颈总动脉球囊损伤后血管内膜增生的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、中国现代医药杂志2015年5月第17卷第5期MMJC,May2015,V0ll7,No.5·13·DOI:10.3969~.issn.1672-9463.2015.05.0O4姜黄素对大鼠颈总动脉球囊损伤后血管内膜增生的影响张磊夏勇【摘要】目的观察姜黄素对大鼠颈总动脉球囊损伤后血管内膜增生及颈总动脉血管平滑肌细胞(VSMCs)磷酸化蛋白激酶一B(p—Akt)、B细胞淋巴瘤,白血病一2(Bcl一2)、Bcl一2相关X蛋白(Sax)的影响,探讨姜黄素影响VSMCs凋亡的可能机制。方法48只SD大鼠随
2、机分为假手术组、损伤组(对照组)、姜黄素低剂量组、姜黄素高剂量组。假手术组和对照组每天3ml生理盐水灌胃.姜黄素低剂量组和高剂量组每天分别给予3ml的lOOmg/kg和200mg/kg药物灌胃。分别在术后14d、28d取颈总动脉。通过HE染色和免疫组化结合图像分析技术观察血管形态学变化和测定p-Akt、Bcl一2、Bax的表达。结果术后14d和28d与对照组相比。相应时间点姜黄素高、低剂量组颈总动脉新生内膜增生面积(NA)及内膜与中膜面积比(NA/MA)均明显减小(P3、cl一2表达减弱,Bax表达增强(尸<0.05)。术后14d和28d与姜黄素低剂量组比较,相应时间点高剂量组p-Akt、Bcl一2表达减弱,Bax表达增强(P<0.05)。结论姜黄素可抑制球囊损伤后颈总动脉血管新生内膜增生,其作用机制可能是通过下调Bcl一2及上调Bax的表达,从而诱导血管损伤后增殖的VSMCs凋亡。【关键词】球囊损伤姜黄素平滑肌细胞EfectofcurcnminOiltheneointimaformationafarcarotidballooninjuriedinratsZha4、ngLei,XiaYong.InstituteofCardiovascularDiseases,XuzhouMedwdc0,Xuzhou221006【Abstract】OMectiveToobservetheefectofcurcuminonneointimalhyperplasiaandexpressionofp-Akt,Bcl一2andBaxaftercarotidballooninjury,andtostudythepossiblemechanismsofcurcumininfluenci5、ngtheapoptosisofvascularsmoothmusclecells(VSMCs).Methods48healthymaleSDratswererandomlydividedintosham-operatedgroup,injurygroup(controlgroup),low-dosecurcumingroupandhigh—dosecureumingroup.Sham—operatedgroupandcontrolgroupre-ceivedgastricperfusionwi6、th3mlnormalsalineeveryday.Low-dosecurcumingroupandhigh-dosecurcumingroupreceivedgastricperfusionof100mg/kgand200mg/kgcurcumin(3m1)everyday.14and28daysafteroperation,thecarotidtissueswereacquired.Thenthetargetvascularsectionswerestainedwit}IHEandobser7、vedthemorphologychanges.Theexpressionofp-Akt,Bc1-2andBaxinarterialwallcellsweredetectedbyimmunohistochemistry.Results14and28daysafterballonin—jury,botllneointimalareaandNA/MAsignificantlyreducedinlow-dosecurcumingroupandhigh-closeeurcumingroupcorn·pa8、redwithcontrolgroup(P
3、cl一2表达减弱,Bax表达增强(尸<0.05)。术后14d和28d与姜黄素低剂量组比较,相应时间点高剂量组p-Akt、Bcl一2表达减弱,Bax表达增强(P<0.05)。结论姜黄素可抑制球囊损伤后颈总动脉血管新生内膜增生,其作用机制可能是通过下调Bcl一2及上调Bax的表达,从而诱导血管损伤后增殖的VSMCs凋亡。【关键词】球囊损伤姜黄素平滑肌细胞EfectofcurcnminOiltheneointimaformationafarcarotidballooninjuriedinratsZha
4、ngLei,XiaYong.InstituteofCardiovascularDiseases,XuzhouMedwdc0,Xuzhou221006【Abstract】OMectiveToobservetheefectofcurcuminonneointimalhyperplasiaandexpressionofp-Akt,Bcl一2andBaxaftercarotidballooninjury,andtostudythepossiblemechanismsofcurcumininfluenci
5、ngtheapoptosisofvascularsmoothmusclecells(VSMCs).Methods48healthymaleSDratswererandomlydividedintosham-operatedgroup,injurygroup(controlgroup),low-dosecurcumingroupandhigh—dosecureumingroup.Sham—operatedgroupandcontrolgroupre-ceivedgastricperfusionwi
6、th3mlnormalsalineeveryday.Low-dosecurcumingroupandhigh-dosecurcumingroupreceivedgastricperfusionof100mg/kgand200mg/kgcurcumin(3m1)everyday.14and28daysafteroperation,thecarotidtissueswereacquired.Thenthetargetvascularsectionswerestainedwit}IHEandobser
7、vedthemorphologychanges.Theexpressionofp-Akt,Bc1-2andBaxinarterialwallcellsweredetectedbyimmunohistochemistry.Results14and28daysafterballonin—jury,botllneointimalareaandNA/MAsignificantlyreducedinlow-dosecurcumingroupandhigh-closeeurcumingroupcorn·pa
8、redwithcontrolgroup(P
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