摘要
Objective： To evaluate the efficacy of neoadjuvant chemotherapy and explore a sensitive and objective way in the evaluation of neoadjuvant chemotherapy, the pathological changes and BCSG1 expression were studied by pathological and immunohistochemical method in breast cancer patients with CAF neoadjuvant chemotherapy （Cyclophosphamide, Adriamycin and Fluorouracil, CAF） and those without at the same period. Methods： Specimens were obtained from 34 breast cancer patients receiving neoadjuvant CAF regimen chemotherapy （CAF group） and 110 breast cancer patients not receiving neoadjuvant chemotherapy （control group）. The BCSG1 expression was detected by SP immunohistochemistry. Correlation between BCSG1 expression and pathological response to CAF neoadjuvant chemotherapy was analyzed. Results： Overall response rate to neoadjuvant chemotherapy was 79.4%. The strong cytoplasm expression of BCSG1 was significantly lower in CAF group than in control group （29.4% vs. 64.5%, P〈0.01）. In CAF group, the positive cytoplasm expression in partial response （PR） （grade Ⅱ） cases was significantly lower than that in no response （NR） （grade Ⅲ） cases （P=0.002）. Conclusion： Neoadjuvant chemotherapy of CAF regimen could decrease the nuclear expression of BSCG1 in breast cancer.
