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PTEN和p27的表达与胃癌发生及分化的关系

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摘要 目的探讨PTEN和p27两种抑癌基因的表达与胃黏膜癌变及癌细胞分化程度的关系。方法采用免疫组织化学方法对胃癌组织、癌前病变和对照组正常胃黏膜进行PTEN和p27表达的检测。结果胃癌组PTEN阳性率为53.3%,较正常组和癌前病变组明显下降(P<0.01);低分化组PTEN阳性率为36.0%,显著低于胃癌高中分化组(P<0.01);高中分化组PTEN阳性率与癌前病变组无差异;胃癌组p27阳性率为35.6%,明显低于正常组(P<0.05),但与癌前病变组无差异;胃癌高中分化组p27表达率与低分化组无差异;胃癌组织中PTEN和p27表达呈正相关,但相关度较低(P<0.05,列联系数C=0.312 2)。结论PTEN与胃癌的分化程度密切相关,可作为判断胃癌恶性程度的指标;p27表达异常可能是胃黏膜癌变过程中的早期分子事件,与胃癌分化程度无关;二者在胃癌组织中的表达无明显相关关系。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2008年第9期891-893,共3页 Chinese Journal of Gerontology
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参考文献14

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