表皮生长因子受体和环氧化酶-2在前列腺癌中的共同表达和意义

目的:探讨表皮生长因子受体(Epidermal growth factor receptor,EGFR)和环氧化酶-2(Cyclooxyge-nase-2,COX-2)在前列腺癌(Prostate cancer,PCa)中的共同表达和临床意义.方法:采用免疫组织化学法(SP)测定48例PCa中EGFR和COX-2阳性表达情况,按免疫组织化学结果分为EGFR(-)COX-2(-)、EGFR(-)COX-2( )、EGFR( )COX-2(-)和EGFR( )COX-2( )四组,分析它们表达与临床病理和预后的关系.结果:EGFR、COX-2阳性在PCa中为34例(70.8%)、21例(45.8%),两者的表达在PCa中无相关性(r＝0.04,P＝0.80),EGFR和COX-2共同表达有16例(33.3%),和Gleason评分、PSA水平有关(P<0.05),5年复发率83.1%,显著高于EGFR( )COX-2(-)(27.8%)、EGFR(-)COX 2( )(16.7%)和EGFR(-)COX-2(-)(12.5%)(P<0.05);13例转移PCa中有10例为EGFR( )COX-2( )(62.5%),显著高于其他三组(P<0.05).结论:EGFR和COX-2在PCa中表达无相关性,但其共同表达可以作为判断PCa预后的重要标志.

Co-exprssion of EGFR and COX-2 and their significance in prostate cancer

Objective:To explore the co-expression of epidermal growth factor receptor(EGFR)and cyclooxygenase-2(COX-2) as well as their clinic significance in prostate cancer.Methods:Protein expression of EGFR and COX-2 in formalin-fixed and paraffin-embedded blocks of 48 PCa tissues was analyzed by immunohistochemical method and then were divided into four groups :EGFR(-)COX-2(-);EGFR(-)COX-2(+);EGFR()COX-2(-);EGFR(+)COX-2(+).Results:Positive rate of EGFR and COX-2 expression in PCa was 70.8% and 45.8%,There was no r...