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ID:21720172
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页数:14页
时间:2018-10-24
《不同补肾阴方药对慢性哮喘气道重构的调节作用及其作用机制研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、不同补肾阴方药对慢性哮喘气道重构的调节作用及其作用机制研究 [摘要]左?w丸、六味地黄丸均含有“三补方”的组分,均对慢性哮喘具有治疗作用。为研究3种补肾阴方剂的抗哮喘作用差异及其分子机制,以卵清白蛋白建立BALB/c小鼠慢性哮喘模型。模型动物分别灌胃给予左归丸、六味地黄丸或三补方。给药后观察抓鼻次数、打喷嚏次数;肺部病理切片测定气道平滑肌厚度、基底膜厚度、胶原沉积面积及杯状细胞数;Westernblot,RT-PCR法检测肺组织MMP-9,TGF-β1,Smad2,Smad3,Smad7的表达。结果
2、显示左归丸组抓鼻次数、打喷嚏次数显著低于三补方组,气道重构抑制程度显著高于三补方组;六味地黄丸组抓鼻次数、打喷嚏次数显著低于三补方组,胶原沉积面积及杯状细胞数显著低于三补方组。4种气道重构相关因子中,左归丸组MMP-9,TGF-β1,Smad2,Smad3显著低于三补方组,Smad7显著高于三补方组。六味地黄丸组Smad7显著高于三补方组,MMP-9与模型组及三补方组均无显著差异。提示3种补肾阴药方抗哮喘作用存在显著差异,左归丸对MMP-9的调节作用及六味地黄丸对Smad7的调节作用可能与3种组方对气
3、道重构抑制作用的差异有关。 [关键词]左归丸;六味地黄丸;哮喘;气道重构 Antiasthmaticeffectsofdifferenttonifyingkidney-Yinformulasand theireffectsonairwayremodelinginchronicasthma TONGLei1,SUNLin-lin2,LIUJin-li2,GAOYue-juan2* (1.MudanjiangMedicalUniversity,Mudanjiang157011,China; 2
4、.HongqiHospital,MudanjiangMedicalUniversity,Mudanjiang157011,China) [Abstract]BothofZuoguiWan(ZGW)andLiuweiDihuangWan(LWDHW)containingredientsofSanbufang(SBF),whichhavebeenproventohaveantiasthmaticeffects.Inordertostudytheantiasthmaticeffectsofthethree
5、tonifyingkidney-Yinformulasandtheirmechanisms,BALB/cmicewererandomlydividedinto5groups.Chronicasthmawasinducedbyovalbumin.Miceintreatedgroupswererespectivelygiven49.0g?kg-1ZGW,35.0g?kg-1LWDHWand22.4g?kg-1SBFbygavage.Thoseinnormalandmodelgroupweregivenno
6、rmalsaline.Aftertreatment,sneezeandnosescratchingtimesofmicewereobserved.Histologicallungsectionswerepreparedtodeterminethebasementmembranethickness(BMT),smoothmusclethickness(SMT),collagenarea(CA)andnumbersofgobletcells(GCN).WesternblottingandRT-PCRwer
7、eusedtodeterminetheexpressionlevelsofMMP-9,TGF-β1,Smad2,Smad3andSmad7.TheresultsshowedthatsneezeandnosescratchingtimesofZGWgroupweresignificantlylowerthanthoseofSBFgroup.ItsinhibitiondegreeonairwayremodelingwassignificantlyhigherthanSBFgroup.Sneezeandno
8、sescratchingtimesofLWDHWgroupweresignificantlylowerthanSBFgroup.ItsCAandGCNweresignificantlylowerthanSBFgroup.Regardingthefourairwayremodelingrelatedfactors,MMP-9,TGF-β1,Smad2andSmad3ofZGWgroupweresignificantlylowerthanthoseofSBF
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