《Luteolin prevents uric acid-induced pancreatic β-cell dysfunction》.pdf

《Luteolin prevents uric acid-induced pancreatic β-cell dysfunction》.pdf

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《Luteolin prevents uric acid-induced pancreatic β-cell dysfunction》.pdf

Availableonlineatwww.jbr-pub.org OpenAccessatPubMedCentral JBR TheJournalofBiomedicalResearch,2014,28(4):292-298 ResearchPaper Luteolinpreventsuricacid—inducedpancreaticB—celldysfunction YingDing,XuhuiShi,XuanyuShuai,YuemeiXu,YunLiu,XiubinLiang,DongWei。, DongmingSu,,因 CenterofMetabolicDiseaseResearch,NanjingMedicalUniversity,Nanfing,Jiangsu210029,China; 。CenterofCellularTherapy,theSecondAffiliatedHospitalofNanjingMedicalUniversity,Nanjing,Jiangsu210029,China; CDepartmentofEndocrinology,theSecondPeoplesHospitalofChengdu,Scihuan610017,China. Received23October2013,Revised07December2013,Accepted16January2014,Epub28Mrach2014 Abstract Elevateduricacidcausesdirectinjurytopancreatic 一cells.Inthisstudy,weexaminedmeeffectsofluteolin,an importantantioxidant,onuricacid-induced口一celldysfunction.Wefirstevaluatedtheeffectofluteolinonnitric oxide(NO1formationinuricacid.stimulatedMin6cellsusingtheGriessmethod.Next.weperfomr edtransient trnasfectionandreporterassaystomeasuretrnascriptiona1activityofnuclearfactor(NF1一KB.Westernblotting assayswerealsoperfomr edtoassesshteeffectofluteolinonhteexpressionofMafA andinducibleNO synhtase (iNOS inuricacid-treatedceils.Finally.weevaluatedtheeffectofluteolinonuricacid-inducedinhibitionofglu— cose-stimulatedinsulinsecretionfGSIS)inMin6cellsandfreshlyisolatedmousepnacreaticislets.Wefoundthat luteolinsignificantlyinhibiteduricacid-inducedNO production,whichwaswellcorrelatedwithreducedexpression OfiN0SmRNA na dprotein.Furthemr ore.decreasedactivityofNF s:Bwasimplicatedininhibitionbyluteolinof increasediNOSexpressioninducedbyuricacid.Besides.1uteolinsignificantlyincreasedMafA expressioninM in6 cellsexposedtouricacid。whichwasreversedbyoverexpressio

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