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药学学报  2014 

红杉醇对2型糖尿病大鼠主动脉nox4及enos表达的影响

, PP. 329-336

Keywords: 红杉醇,2型糖尿病,nox4,enos,氧化应激

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Abstract:

观察红杉醇(sequoyitol,seq)对2型糖尿病大鼠主动脉内皮型一氧化氮合酶(enos)及nadph氧化酶4(nox4)表达的影响。采用小剂量链脲佐菌素(stz,35mg·kg-1)加高脂高糖饮食诱导2型糖尿病动物模型,灌服seq(12.5、25及50mg·kg-1·d-1)治疗6周后,于末次给药后测定空腹血糖。使用离体主动脉环灌流法,观察主动脉环对乙酰胆碱和硝普钠的舒张反应,he染色观察主动脉病理学变化,放射免疫法检测血清胰岛素水平;比色法测定主动脉总抗氧化能力(t-aoc)、丙二醛(mda)及一氧化氮(no)含量;real-timepcr、westernblotting及免疫组化检测主动脉enos及nox4mrna和蛋白表达。结果显示,红杉醇给药6周后能明显降低糖尿病大鼠空腹血糖,减轻胰岛素抵抗,改善主动脉内皮依赖性舒张功能,上调主动脉enos的表达,提高t-aoc及no水平,降低nox4的表达及mda含量。上述结果表明,seq可能通过下调nox4表达、上调enos表达进而对糖尿病大鼠主动脉内皮功能损伤产生保护作用。

References

[1]  haidarama,yassinhz,ratebm,etal.roleofoxidativestressindevelopmentofcardiovascularcomplicationsindiabetesmellitus[j].currvascpharmacol,2006,4:215-227.
[2]  agot,kitazonot,ooboshih,etal.nox4asthemajorcatalyticcomponentofanendothelialnad(p)hoxidase[j].circulation,2004,109:227-233.
[3]  taguchik,matsumotot,kamatak,etal.inhibitorofgprotein-coupledreceptorkinase2normalizesvascularendothelialfunctionintype2diabeticmicebyimprovingβ-arrestin2translocationandamelioratingakt/enossignaldysfunction[j].endocrinology,2012,153:2985-2996.
[4]  shenh,shaom,chokw,etal.herbalconstituentsequoyitolimproveshyperglycemiaandglucoseintolerancebytargetinghepatocytes,adipocytes,andβ-cells[j].amjphysiolendocrinolmetab,2012,302:e932-e940.
[5]  chenxp,yangjr,lixw,etal.effectsofsequoyitolonexpressionofnadphoxidasesubunitsp22phoxandp47phoxinratswithtype2diabeticliverdisease[j].actapharmsin(药学学报),2013,48:489-494.
[6]  wadhamc,parkera,wangl,etal.highglucoseattenuatesproteins-nitrosylationinendothelialcells:roleofoxidativestress[j].diabetes,2007,56:2715-2721.
[7]  chenz,liulb,liuxy,etal.effectofpioglitazoneonvascularendothelialnitricoxideandendothelinsecretionbyhighglucosetreatment[j].jpractdiabetol(实用糖尿病杂志),2006,2:48-49.
[8]  nishikawat,edelsteind,duxl,etal.normalizingmitochondrialsuperoxideproductionblocksthreepathwaysofhyperglycaemicdamage[j].nature,2000,404:787-790.
[9]  sasakis,inoguchit.theroleofoxidativestressinthepathogenesisofdiabeticvascularcomplications[j].diabetesmetabj,2012,36:255-261.
[10]  ligw,panxr,lilliojas,etal.anewinsulin-sensitivityindexforthepopulation-basedstudy[j].chinjinternmed(中华内科杂志),1993,32:656-660.
[11]  bergmanrn,finegooddt,aderm.assessmentofinsulinsensitivityinvivo[j].endocrrev,1985,6:45-86.
[12]  zhangm,lüxy,lij,etal.thecharacterizationofhigh-fatdietandmultiplelow-dosestreptozotocininducedtype2diabetesratmodel[j].expdiabetesres,2008,2008:704045.
[13]  zhangcc,xiegr,jiangyt,etal.studyingofstreptozotocininducingtype2diabetesratmodel[j].anhuimedpharmj(安徽医药),2012,16:1241-1243.
[14]  liangjy,wufh,baogh,etal.anaturalcompoundusefulfortreatingdiabetes,itspreparationanduse:eu,ep1559703[p],2005.
[15]  shuxr.researchofhypoglycemicmechanismofsequoiasubstancessuchasalcoholinositol(红杉醇等肌醇类物质降血糖作用机制的研究)[d].changsha:centralsouthuniversity,2009.
[16]  rösenp,osmersa.oxidativestressinyoungzuckerratswithimpairedglucosetoleranceisdiminishedbyacarbose[j].hormmetabres,2006,38:575-586.
[17]  follif,corradid,fantip,etal.theroleofoxidativestressinthepathogenesisoftype2diabetesmellitusmicro-andmacrovascularcomplications:avenuesforamechanistic-basedtherapeuticapproach[j].currdiabetesrev,2011,7:313-324.
[18]  johnsonel.glycemicvariabilityintype2diabetesmellitus:oxidativestressandmacrovascularcomplications[j].advexpmedbiol,2012,771:139-154.
[19]  chauhana,chauhanv,brownwt,etal.oxidativestressinautism:increasedlipidperoxidationandreducedserumlevelsofceruloplasminandtransferrin-theantioxidantproteins[j].lifesci,2004,75:2539-2549.
[20]  serizawak,yogok,aizawak,etal.nicorandilpreventsendothelialdysfunctionduetoantioxidativeeffectsvianormalisationofnadphoxidaseandnitricoxidesynthaseinstreptozotocindiabeticrats[j].cardiovascdiabetol,2011,10:105.
[21]  huajy,xuy,heyz.effectsofhighconcentrationsofglucoseandldlonvascularendothelialcellsdamageandthereleaseofno[j].zhejiangclinmedj(浙江临床医学),2005,7:1126-1127.
[22]  zoumh,shic,cohenra.oxidationofthezinc-thiolatecomplexanduncouplingofendothelialnitricoxidesynthasebyperoxynitrite[j].jclininvest,2002,109:817-826.

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