【关键词】,视网膜母细胞瘤
SignificanceofPTENproteinexpressionofinretinoblastoma
【Abstract】AIM:ToinvestigatetheexpressionofPTENproteininretinoblastomaanditsclinicalsignificance.METHODS:ExpressionofPTENproteinwasdetectedin36specimensofretinoblastomaand10specimensofnormalretinausingSPimmunohistochemistry.RESULTS:ThepositiverateofPTENprotein(21cases,58.3%)inretinoblastomawasmuchmorefrequentthanthatofnormalretina(0%,P=0.0000)andtheexpressionlevelofPTENvariedbetweenthepathologygrades(differentiated73.7%;undifferentiated41.2%,P<0.05)andamongtheclinicstages(stageⅠ75.0%;stageⅡ62.5%;stageⅢ41.7%,P<0.05).Thehigherthepathologygradeandtheclinicalstageoftumors,thelowertheexpressionofPTENprotein.CONCLUSION:TheabnormalexpressionofPTENproteinmayplayanimportantroleinthedevelopmentofretinoblastoma.DetectionofPTENproteinmaybeusefulfortheassessmentofretinoblastomadevelopmentanditsprognosis.
【Keywords】retinoblastoma;PTENprotein;immunohistochemistry
【摘要】目的:探讨PTEN蛋白在视网膜母细胞瘤(RB)组织中的表达及临床意义.方法:采用免疫组化SP法观察36例RB和10例正常视网膜组织石蜡标本中PTEN的表达情况.结果:21例(58.3%)RB组织中PTEN蛋白表达阳性,与正常视网膜组织相比(0%)存在显著性差异(P=0.0000).PTEN蛋白在分化和未分化RB组织中的表达率分别是73.7%和41.2%(P<0.05);在Ⅰ,Ⅱ,Ⅲ期RB组织中的表达率分别是75.0%,62.5%和41.7%(P<0.05).随肿瘤细胞病理分型、临床分期的增高,PTEN蛋白阳性表达率明显降低.结论:PTEN蛋白异常表达在RB的进展中有重要作用,检测PTEN的表达有助于判断病情与预后.
【关键词】视网膜母细胞瘤;PTEN蛋白;免疫组化