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1、第34卷第2期健康研究Vo1.34NO.22014年4月HealthResearchApr.2014doi:10.3969/j.issn.1674—6449.2014.02.006酒精性肝纖維化大鼠肝組織中TGF-fl1/Smads信號(hào)分子表達(dá)的變化張?zhí)炱妫蝹ダ?1.慶元縣人民醫(yī)院內(nèi)科,浙江慶元323800;2.麗水市中心醫(yī)院消化科,浙江麗水323000)摘要:目的觀察TGF一131/Smads信號(hào)分子在酒精性肝纖維化大鼠肝組織中的變化,探討酒精性肝纖維化的發(fā)病機(jī)制。方法50只sD大鼠,隨機(jī)分成模型組和對(duì)照組各25只。模型組用56度白酒灌胃(15m1
2、.kg~.d。。)致肝纖維化,對(duì)照組以等量生理鹽水代替灌胃。6個(gè)月后全部處死取肝待檢。采用HE染色觀察肝纖維化程度,免疫組化法觀察肝組織中TGF一81蛋白的表達(dá)水平,RT·PCR法觀察肝組織中TGF一81和SmadsmRNA的表達(dá)水平。結(jié)果6個(gè)月酒精灌胃能成功制作大鼠酒精性肝纖維化模型。和對(duì)照組相比較,模型組肝組織中TGF.81蛋白表達(dá)水平顯著升高(P<0.O1),TGF—t31,smad3,samd4mRNA表達(dá)水平顯著升高(均P<0.01),而smad7mRNA水平顯著降低(P<0.05)。結(jié)論TGF一~l/Smads信號(hào)通路參與酒精性肝纖維化的形
3、成過程,其中Smad7起著對(duì)肝纖維化負(fù)調(diào)控的作用。關(guān)鍵詞:酒精性肝纖維化;轉(zhuǎn)化生長(zhǎng)因子[31;Smads中圖分類號(hào):R57文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1674—6449(2014)02—0136—03ThechangingpatternofTGF---fll/SamdspathwayinalcoholicliverfibrosisofratsZHANGTian—qi,HEWei—li(TheCentralHospitalofLishuiCity,Lishui323000,China)Abstract:ObjectiveTorecognizethechang
4、ingpatternsofTGF一[31/SamdspathwayinalcoholicliverfibrosisofratsSOastounderstandthepartialpathogenesisofalcoholicliverdisease.Methods50healthySDratswereselectedanddividedintoanexperimentalgroupandacontrolgrouprandomly.25ratsoftheexperimentalgroupweregivenadosageof15m1.kg~.d‘。of56
5、。alcoholforsixmonths,whilethe25ratsofthecontrolgroupweregivennormalsalineinsteadbutofthesameamount.Allratsweresacrificedaftersixmonthsandtheirliverspecimensweretakenoutforexamination.WeappliedHEmethodtodetectthedegreeofrats’alcoholicliverfibrosis.imumno—histo.chemistryexaminatio
6、ntodetecttheproteinexpressionanddistributionofTGF1,andRT—PCRmethodtodetectthemRNAexpressionofTGF一131andSmads.FindingsAlcoholicliverfibrosisratmodelwassuccessfullymadeby56。alcohol—garageaftersixmonths.Therewassignificantdifferencesinliverfibrosisbetweenthecontrolgroupandtheexperi
7、mentalgroup(P<0.O1).Comparedwiththe收稿日期:2013—08一O1作者簡(jiǎn)介:張?zhí)炱?1974一),男,浙江慶元人,本科,副主任醫(yī)師。第2期張?zhí)炱?,等:酒精性肝纖維化大鼠肝組織中TGF一131/Smads信號(hào)分子表達(dá)的變化137controlgroup,theTGF]B1proteinoftheexperimentalgroupsignificantlyincreased(P<0.01),andwasmainlydistributedinportalarea,peri—sinusoidalspaceandfibrouss
8、epta.ThemRNAexpressionofTGF1,smad3andsamd4wereh