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MDM2p53蛋白在人脑胶质瘤中的表达意义及相关性研究

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摘要 目的检测MDM2、p53蛋白在胶质瘤中的表达,探讨两基因蛋白在胶质瘤形成和发展中的作用以及二者的相关性。方法对已明确诊断的48例脑胶质瘤利用LSAB免疫组化法检测MDM2、p53蛋白的表达。结果MDM2、p53蛋白阳性率分别为22.9%、41.7%。在高级别的肿瘤(Ⅲ、Ⅳ级)中p53表达率63.2%,明显高于低级别(Ⅱ级)的肿瘤(27.6%)(p<0.05)。在不同分级的胶质瘤中,MDM2表达率及阳性程度没有显著差异。P53蛋白表达多出现在MDM2蛋白阴性的病例中,两者联合表达者仅1例。结论P53在胶质瘤中的异常表达与肿瘤的分化程度相关;MDM2基因异常是胶质瘤发生过程中的早期事件。
出处 《济宁医学院学报》 2005年第2期27-28,共2页 Journal of Jining Medical University
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