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1、...a,。20{)6565ngy2006,o。,5320中华消化杂志年月第2卷第期chilDiMvl26N不匕牢字高脂饮食非酒精性脂肪性肝病大鼠肝脏成脂相关基因表达增强范建高方继伟陆元善田丽艳徐正婕[摘要]目的探讨非酒精性脂肪性肝病(NAFLD)大鼠肝脏成脂相关基因mRNA表达的动态变化。方法模型组SD大鼠给予高脂饮食饲养,分批于实验第4、8、12、16、24周处死,同期设普通饮食。一RPC尺]C〔SREBPIc)及饲养大鼠作对照平分别检测肝脏固醇调节元件结合蛋自其靶基因脂肪酸合成、、。.酶(FAS)脂联素抵杭素mRNA表达结果模型组大鼠4周肝脏可见散在性肝
2、细胞脂肪变性8周为,。,单纯性脂肪性肝炎12~24周从脂肪性肝炎进展为脂肪性肝炎伴肝纤维化从实验第4周起模型组大鼠cl,.SREBP-l和llRNA5一62~25;肝脏FAS表达逐渐增强至24周时分别较对照组升高倍和倍模型组大鼠肝脏从第12周起出现脂联素和抵抗素RNA,。m表达两者表达量均随造模时间延长而增强相关分析显.,、、、、.、SRE13PI。FASRNA0808。4示脂联素抵抗素m表达量均与肝脂肪变程度呈正相关(r值分别为83..、,.。_~、、、仁。592。577尸值均<。01)结论高脂饮食N八FlD大鼠肝脏SREBPlFAS脂联素抵抗素等成脂基因表
3、达增强,提示脂肪变性的肝细胞可能部分具有脂肪细胞的特征.即发生r成脂性改变。【关键词】脂肪肝,;;;非酒精性固醇调节元件结合蛋白脂联素抵抗素ove卜exPressionofadiPogenicgenesintheliverofratswithnonaleoholiefattyliverdiseaseindueedbyhigh-一,一一,.e:a、aoe:a二、an。zaenzerrazz:二。r,a,,gha;r、zfatditl几八NJgFANGJiwLUYuhlCf.)F夕LShiFeoe‘、osza,Zaozon:。er、2夕pPz月PizJgUn1Sh
4、anghaz200080,Ch;,,aAbstractOeetiveToinvestigateexpress旧nofmessagcRNAofadipogenlegenesintherats[lbjvereveonnon一aeooealversease.eoseratsoeasesta1iwithdlpiglhlifttyldiMthdThSDrndlwl)lishbyee一natet.enteoaratsoresaereea,,anee.fdghighfdiThhrndlwifidt4thsth12thdZ在thwksrcspeet一vely.一Therats
5、reeeivednoraetswereaseontrolSeuanttat一ve一asusetoeteetteexres-mldimiqiRTPCRwddhp5ionosteroreguatoryeeent一nngproteinle一leanditstargetgeneattyaeidsyntase,flllmbidi(SREBP)fhadlpsinandresistinintheIiver.ResultsSottyhepatiesteatosisansimPlettyliverwereobseenthepdfarvdimodelgroupat4thandst
6、hweeks,respeetively.From12thweekto24thwcek,theliversgraduallyprogressed.romsteatoeattstorossoaretteeontrou,teexressono一eanfhpiifibiCdwihhlgrophpifSREBpldFAS呷ml又NAwasureuatenteveroerou,exres,onoeanereetenepgldihlifdlgpm叹NApifSREBP-ldFASwhighdmo一an一.oesatteee,reseetve.osve1llexrbys6dZ
7、25fldh24thwkpilyPitiRNApes、ionofadiPslnandresistinin.teoelgrouPwereoeeurredatte12tee,annereasedwitthetimeAosltveeorreatona、hmdhhwkdihpiliw一,,,oundbetweenteexpressionoleFASasinresistinanepatiesteatosls(rfhmRNAfSREBPdipdh-.,.....·08080834,0592,0577,P<001)ConelusionsTheexPressionSREBP一
8、le,FAS,adipsinresis