Neo-adjuvant chemotherapy for operable breast cancer induces apoptosis |
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Authors: | Zhi-ming Shao Jun Li Jun Wu Qi-xia Han Zhen-zhou Shen Joseph A Fontana Sanford H Barsky |
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Institution: | (1) Department of Surgery, Molecular Biology Lab, Cancer Hospital, Shanghai Medical University, Shanghai, 200032, China;(2) University of Maryland Cancer Center, Baltimore, MD 21201, USA;(3) Department of Pathology and, UCLA/Revlon Breast Center, UCLA, Los Angeles, CA 90024, USA |
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Abstract: | The use of neo-adjuvant chemotherapy (often referred to as pre-operative or primary chemotherapy) represents a major change in the management of breast cancer as a systemic disease. Laboratory studies have shown that many anti-cancer agents with differing modes of action achieve cytotoxic effects by inducing apoptosis. In this study, we investigated the induction of apoptosis by neo-adjuvant chemotherapy in human breast cancer. The aim was to determine whether a correlation existed between post chemotherapy apoptotic index (AI) and clinical response and patients' survival. Our results indicate that apoptosis is induced by neo-adjuvant chemotherapy and that the response is variable. Our data show that post chemotherapy AI correlated with clinical response and increased patient survival, including both relapse (disease) free survival and overall survival. Post-neo-adjuvant chemotherapy AI levels in primary breast cancer may possibly predict an individual patient's overall response. |
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Keywords: | apoptosis breast cancer neo-adjuvant chemotherapy |
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