新辅助化疗对乳腺癌组织中雌激素、孕激素受体及P53和CerbB-2表达的影响

目的探讨新辅助化疗对乳腺癌组织中雌激素受体（ER）、孕激素受体（PR）及P53和CerbB-2表达的影响。方法2003年1月—2005年12月共有123例手术的乳腺癌患者进入本组研究,分析患者术前弹射式空芯针穿刺活检标本和术后大体标本癌组织中ER、PR、P53和CerbB-2表达的变化。结果患者新辅助化疗前ER阳性表达率46．61％（55／118）,化疗后ER阳性表达率66．10％（78／118）,两者比较差异有统计学意义（P〈0．05）;新辅助化疗前后PR、P53和CerbB-2的表达无显著性变化（P〉0．05）。结论新辅助化疗能使部分乳腺癌组织中的ER表达发生改变,但对PR、P53及CerbB-2的表达无影响。

Effect of neoadjuvant chemotherapy on estrogen and progesterone receptors and P53 and CerbB-2 in breast cancer

OBJECTIVE: To study the effect to neoadjuvant chemotherapy on estrogen receptor (ER), progesterone receptor (PR), P53 and CerbB-2 expression in patients with breast cancer. METHODS: From 123 breast cancer patients treated with neoadjuvant chemotherapy, core needle biopsy samples before the chemotherapy and surgical specimens were obtained for assay of ER, PR, P53 and CerbB-2 expression. RESULTS: ER expression occurred in 46.61% (55/118) of the patients before neoadjuvant chemotherapy and in 66.10% (78/118) of these after surgery showing statistically significant. But the changes in PR, P53 and CerbB-2 expression exhibited no significant difference. CONCLUSIONS: Significant changes occur in ER expression after neoadjuvant chemotherapy in patients with breast cancer. Neoadjuvant chemotherapy has no significant effects on PR, P53 and CerbB-2 expression in patients with breast cancer.