抑癌p53基因在星形细胞瘤中阳性表达的意义推荐到首页 □ 《右江医学杂志》2008年第03期1/4页1234作者单位:广西医科大学第四附属医院神经外科,广西柳州545005;广西医科大学第一附属医院神经外科,广西南宁530021
【摘要】 目的研究p53在星形细胞瘤发生、增殖过程中的作用及临床意义。方法采用免疫组织化学法(sp法)检测62例资料完整的星形细胞瘤及10例正常脑组织的p53表达,分析p53蛋白在星形细胞瘤及正常脑组织中的表达情况。结果正常脑组织中未见p53蛋白阳性表达,62例星形细胞瘤中共有26例肿瘤p53蛋白表达呈阳性,二者差异有显著性(χ2=4.872,p<0.05),其中在级星形细胞瘤中阳性率为8.33%(1/12),级星形细胞瘤中阳性率为21.05%(4/19),级间变性星形细胞瘤中阳性率为60%(9/15),级胶质母细胞瘤中阳性率为75%(12/16)。结论星形细胞瘤中p53蛋白的表达与肿瘤的级别相关,分化程度越低,p53蛋白阳性表达率越高,检测p53有助于临床判断预后。
【关键词】星形细胞瘤抑癌p53基因免疫组织化学
thesignificanceofantioncogenep53positiveexpressioninastrocytoma
xuejianrong,qinkunming,chenjiakang,lujiangwu,wenchaoyong
(departmentofneurosurgery,thefourthaffiliatedhospitalofguangximedicaluniversity,liuzhou,545005;departmentofneurosurgery,thefirstaffiliatedhospitalofguangxi medicaluniversity,nanning,530021)
【abstract】objectivetoinvestigatetheroleofp53duringtheproccessoftheastrocytomaoccurrenceandcellproliferation,soastheclinicalsignificance.methodsthepositiveexpressionofp53proteinweredetectedinthespecimensof62casesofastrocytomabyspimmunologicaltechnique,asidewith10casesofnormalbraintissue.thentheexpressionofp53proteininthesetissueswereanalysed.resultstherewere26casespositiveexpressionofp53proteinin62astrocytomaspecimensandnopositiveexpressionofp53proteininthenormalbraintissue.itshowedasignificantdiversitybetweenthetwogroups(χ2=4.872,p<0.05).thepositivepercentagewas8.33%(1/12)ingradeiastrocytomas,21.05%(4/19)ingradeiiastrocytomas,60%(9/15)ingradeiiianaplasticastrocytomas(aa)and75%(12/16)ingradeivglioblastomamultiforme(gbm).conclusiontheresultsrevealacorrelationbetweenp53proteinexpressionandhistopathologicaltypingandgradinginastrocytomas.thedegreeofcelldifferentiationislower,theratioandintensityofp53expressionisobviouslyhigher,whichcanhelptoevalueprognosis.1/4页1234评论(0篇)