Objective To study the advances in research of breast cancer during pregnancy. Methods The literatures in recent years were reviewed. Results A lot of evidences suggested that the diagnosis may be delayed easily. The diagnosis was primarily made by needle aspiration cytology and biopsy. The treatment of pregnant breast cancer was not different from ordinary breast cancer, however the factor of foetus should be taken into account. Termination of pregnancy did not improve survival. Conclusion Pregnant breast cancer is mostly at later stage at the time of diagnosis and has poorer prognosis than ordinary breast cancer. The patients with breast cancer during pregnancy usually have an equivalent survival rate when compared with age and stagematched ordinary group. Future pregnancy may be allowed after two years of treatment in patients with early breast cancer.
【Abstract】Objective To study the effects of exogenous hyaluronidase on invasive and angiogenic potential of human breast cancer cell line ZR-75-30.MethodsThere were two groups in the study: the study group (hyaluronidase group) and the control group. The invasive potential and the angiogenic potential of human breast cancer cell ZR-75-30 were detected by the invasive model in vitro and technique of double-chamber co-culture that human breast cancer cell line ZR-75-30 and human umbilicus vein endothelium cell ECV-304 were co-cultured. ResultsThe penetrating number of tumor cell in the study group (70.625±11.64) was significantly higher than that in the control group (22.125±6.09),P＜0.01. The tube number from ECV-304 cell induced by ZR-75-30 cell in the study group (34.5±2.4) was significantly higher than that in the control group (8.5±1.5)， P＜0.01. ConclusionExogenous hyaluronidase can reinforth the invasive and angiogenic ability of breast cancer cells.
Objective To study the significances and expressions of Y14 and Upf1 in human breast cancer tissues and human normal breast tissues. Methods The expressions of Y14 and Upf1 were determined in human breast cancer tissues and human normal breast tissues by immunohistochemistry and laser scanning confocal microscope. Results ①Y14 and Upf1 levels of human breast cancer tissues were obviously higher than those of human normal breast tissues (Plt;0.05). ②Y14 and Upf1 levels of the class Ⅲ were obviously higher than those of the class Ⅰ and Ⅱ in breast cancer tissues (Plt;0.05). ③Y14 and Upf1 levels in breast cancer tissues of patients with positive axillary lymph nodes were obviously higher than those with negative axillary lymph nodes (Plt;0.05). Conclusion The function of nonsense-mediated mRNA decay (NMD) is obviously enhanced in breast cancer tissues. Expressions of Y14 and Upf1 levels of the class Ⅲ cancer tissue and cancer with positive axillary lymph node are high because of NMD.