凋亡相关基因在前列腺癌中的表达与雄激素依赖及撤除的关系
Correlation of apoptosis correlative gene expression and androgen-dependent and ablation in prostate carcinoma
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摘要: 目的: 探讨凋亡相关基因Fas、bc l-2在前列腺癌中的表达与雄激素依赖及撤除的关系。方法: 采用免疫组织化学染色方法,检测74例前列腺癌(Pca)组织、22例前列腺增生症(BPH)组织及14例正常前列腺(NP)组织中Fas、bc l-2的表达情况。结果: ①Fas表达于所有被检测的前列腺良、恶性病变及正常组织中;bc l-2表达于75.0%Pca组织、54.5%BPH组织、35.7%NP组织。Fas在BPH组织中表达强度最强,在Pca组织中表达强度最弱(P<0.05)。Pca组与BPH及NP组比较,bc l-2表达有显著性差异(P<0.05)。②17例雄激素依赖性前列腺癌(AD-Pca)组织中Fas表达强度明显强于9例雄激素非依赖性(AI-Pca)前列腺癌(P<0.05);而bc l-2在AI-Pca中表达偏强。③bc l-2在17例雄激素去除后组织中表达较去除前明显降低(P<0.05);Fas表达在雄激素去除前后无明显变化。结论: Fas低表达与bc l-2强表达可能是前列腺癌发生、发展的重要原因;在雄激素依赖性前列腺癌进展成非依赖性前列腺癌中Fas与bc l-2...Abstract: Objective: To explore the relationship of apoptosis correlative gene Fas、bcl-2 and androgen-dependent and ablation in prostate carcinoma. Methods: Expression of Fas,bcl-2 in 74 cases of prostate carcinoma(Pca) tissues,22 cases of benign prostatic hyperplasia(BPH) tissues,14 cases of normal prostate(NP) tissues was detected by immunohistochemical staining method. Results: (1)Fas were expressed in all the detected tissues.Bcl-2 was present in 75.0% Pca tissues,54.5% BPH tissues,35.7% NP tissues.The expression of Fas was the strongest in BPH tissues,and the weakest in Pca tissues((P<0.05)).The difference of bcl-2 expression between Pca group and BPH or NP group was statistically significant((P<0.05)).(2)The intensity of Fas expression in 17 cases of androgen-dependent prostate carcinoma was stronger than that in 9 cases of androgen-independent prostate carcinoma(P<0.05),while the expression of bcl-2 in androgen-independent prostate carcinoma tended to be marked.(3)The expression of bcl-2 in Pca tissues after androgen ablation was significently reduced than before(P<0.05).The expression of Fas was unchanged after therapy. Conclusion: The low expression of Fas and the high expression of bcl-2 may be the important reason of the development and progression of prostate carcinoma.Both Fas and bcl-2 may take part in the progression of Pca from androgen dependence to androgen independence and the expression of bcl-2 might be possible to predict the effect of androgen ablation therapy.
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