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1、复肾颗粒对肾间质纤维化大鼠肾脏的保护作用刘明龙*1,曾永祥2,刘天喜1,卢守燕1,李建华1(1*兰州大学第一医院肾病科,2甘肃省医疗器械检测中心,兰州730000)[摘要]目的:观察复肾颗粒在肾间质纤维化过程中对转化生长因子β激活激酶(TAK1)表达的影响及其可能的肾脏保护作用机制。方法:采用单侧输尿管结扎(UUO)致肾间质纤维化大鼠模型,将60只大鼠随机分为6组:假手术组(N)、模型组(M,UUO组)、福辛普利组[F0,10mg/(kg·d)]、复肾颗粒1组[F1,7.5g/(kg·d)]、复肾颗粒2组[F2,15g/(kg·d)]、复肾颗
2、粒3组[F3,30g/(kg·d)]。14d后处死大鼠,取结扎侧肾组织采用HE及Masson染色观察病理变化,RT-PCR和Western-bloting检测肾组织TAK1和α-SMA的表达。结果:模型组大鼠肾纤维化程度及肾组织TAK1和α平滑肌肌动蛋白(α-SMA)的表达较假手术组显著升高(P<0.01),复肾颗粒各组及福辛普利组较模型组显著降低,尤以复肾颗粒2组为甚(P<0.01,P<0.05)。结论:复肾颗粒可能通过降低TAK1和α-SMA的含量而起到减轻肾间质纤维化病程进展的作用,推测其抑制TAK1和α-SMA表达上调的作用可能是其抗
3、肾小管间质纤维化的机制之一。[关键词]复肾颗粒;单侧输尿管结扎;肾间质纤维化;转化生长因子β激活激酶ProtectiveeffectofFushenkelionkidneyofrenaltubulointerstitialfibrosisratsLIUMing-long*,ZENGYong-xiang,LIUTian-xi,LUShou-yan,LIJian-hua基金项目:甘肃省卫生厅中医药科研基金资助项目(GZK-2010-22)通讯作者:*刘明龙,男,主治医师,主要从事肾脏病方面的研究。(Tel):0931-8625200-6037,1
4、3893256115;Email:landaliuminglong@163.com(*DepatmentofNephrology,FirstHospital,LanzhouUniversity,Lanzhou730000,China)[Abstract]Objective:ToobservetheeffectsoffushenkeliontheexpressionofTAK1andinvestigatethepossiblemechanismsinratswithrenalinterstitialfibrosis.Methods:Ratren
5、alinterstitialfibrosismodelwasproducedbyUnilateralureterobstruction.60Sprague-WistarMaleratswererandomlydividedintosixgroups:shamgroup(N),modelgroup(M,UUOgroup),fosinoprilgroup[F0,10mg/(kg·d)],fushenkeligroup1[F1,7.5g/(kg·d)],fushenkeligroup2[F2,15g/(kg·d)]andfushenkeligrou
6、p3[F3,30g/(kg·d)].Alloftheratsweresacrificedat14daysafterUUO.ItwascarriedouttomeasuretheleveloftubulointerstitialdamagebyHEandMassonstaining.ThemRNAandproteinexpressionofTAK1andα-SMAwasdetectedbyreal-timePCRandWesternblot.Results:Therenalinterstitialfibroticareaandtheexpres
7、sionofTAK1andα-SMAwerehightersignificantlythanthatinshamgroup(P<0.01).IncomparisonwithUUOgroup,eachinterventiongroupoffushenkelicouldmarkedlydecreasedtheexpressionofTAK1andα-SMA,especiallyinfushenkeligroup2(P<0.01,P<0.05).Conclusion:FushenkelimaydownregulatethelevelsofTAK1a
8、nddecreaserenalinterstitialfibrosis.Itisinferredthatitmaybeoneofthemechanismsoffus