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bmi审审1基因在甲状腺乳头状癌中的表达及意义word格式论文
ExpressionandSignificanceofBmi-1GeneinPapillary thyroid carcinoma AbstractBackground:Bmi-1(B-cellspecificmoloneyleukemiavirusinsertionsite1),one importantmemberofPCG(Polycombgroupgenes)family,wasdiscoverbyHollandCancerCentre from mice,slymphomain1991,itplaysanimportantroleinformationofmanymalignanttumors.Manyresearchhaveprovethatasanoncogene,Bmi-1hadparticipatedinmanyhumanmalignanttumors, such as leukemia【1】、breast cancer【2】,small cell lung cancer【3】andgastrointestinalcarcinomas【4】.Ontheotherhand,fromaspectoftumormetastasis,BruggemanSWhaveprovedthatBmi-1canenhancetheadhesionbetweentumorcellsandextracellularmatrixthroughintegrinreceptors.ThereisnoresearchabouttheexpressionofBmi-1inthyroidcarcinoma ,hitherto. ObjectiveToanalyzetheexpressionofBmi-1geneinthetissueofthyroiddiseasesandprobetherelationshipbetweentheBmi-1andpathogenesisof the papillary thyroid carcinoma and its lymph metastasis. Materials: 1. AllthethyroidspecimenswerecollectedfromTheSecondGeneral SurgeryDepartmentofGuangzhouFirstMunicipalPeople’sHospitalbetween June,2008 to June 2009. 2. The reagents about extracting RNA and two-step RT-PCR Kit Methods:Using18casesofnodulargoitersand18normalthyroidtissuesasthecontrolgroup,while24papillarythyroidcarcinomaasexperimentalgroup,usingtwo-stepRT-PCRtodetectexpressionofBmi-1between normalthyroidtissue、nodulargoiterandpapillarythyroid carcinoma,thenusingR×Csplitχ2testtoanalyzetheresultanddetermine the expression of Bmi-1 between the three groups.Result:1.From24papillarythyroidcarcinoma,23casesBmi-1positive, positiverateis95.83%;From18nodulargoiters,only2casesBmi-1positive,positiverateis11.11%;Bmi-1expressionarenegativeinallnormalthyroidtissues.ThereisasignificantdifferenceofBmi-1 expressionbetweenpapillarythyroidcarcinomagroupandnodulargoitersgroup(χ2=30.643,p0.05);andthereisalsoasignificantdifferencebetweenpapillarythyroidcarcinomagroupandnormalthyroidtissuegroup(χ2=38.131,p0.05);butnosignificantdifferencebetweennormalthyroidtissuegroupandnodulargo
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