Study of COX-2, Ki67, and p53 expression to predict effectiveness of 5-flurouracil, epirubicin and cyclophosphamide with celecoxib treatment in breast cancer patients
| Autor: | Lixing Zhu, C.C.Y. Wai, Eric Lik Hang Lui, Louis W.C. Chow, W.T.Y. Loo, Masakazu Toi |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Adult
Antimetabolites Antineoplastic Cyclophosphamide medicine.medical_treatment Apoptosis Breast Neoplasms Biology Metastasis chemistry.chemical_compound Breast cancer Antineoplastic Combined Chemotherapy Protocols medicine Humans Antineoplastic Agents Alkylating Lymph node Aged Cell Proliferation Epirubicin Aged 80 and over Pharmacology Sulfonamides Chemotherapy Antibiotics Antineoplastic Cyclooxygenase 2 Inhibitors Cancer General Medicine Middle Aged Genes p53 medicine.disease Immunohistochemistry Gene Expression Regulation Neoplastic Vascular endothelial growth factor Ki-67 Antigen medicine.anatomical_structure chemistry Celecoxib Cyclooxygenase 2 Cancer research Pyrazoles Female Fluorouracil medicine.drug |
| Zdroj: | Biomedicine & Pharmacotherapy. 59:S298-S301 |
| ISSN: | 0753-3322 |
| DOI: | 10.1016/s0753-3322(05)80050-2 |
| Popis: | Background. - Cyclooxygenase-2 (COX-2) affects cell proliferation, apoptosis, and metastasis of breast cancer, and may also be involved in tumor angiogenesis through vascular endothelial growth factor. Ki67 and p53 are common markers of proliferation and apoptosis in tumor cells. This study investigated the change in expression of COX-2, Ki67, and p53 in solid tumors after the administration of chemotherapeutic drugs. Materials and Methods. - Fifty patients were eligible to be treated with preoperative 5-fluorouracil, epirubicin, and cyclophosphamide, with celecoxib (FECC). Tumor tissue samples from 10 patients who, diagnosed with invasive ductal carcinoma, completed chemotherapy were examined immunohistochemically for COX-2, Ki67, and p53. Results. - From the 60% of patients who expressed COX-2 and 90% who expressed Ki67 and p53 before treatment, 90% of patients revealed a lower intensity staining for each marker after FECC treatment. However, changes in expression of the three markers did not significantly correlate with tumor size, grade, axillary lymph node status. Immunostained slides clearly showed that the diaminobenzidine intensity was markedly reduced after the three-cycle FECC treatment, which implied the combined regimens be effective to the cancer patients. Conclusions. - This study demonstrates a novel relationship between COX-2, Ki67, and p53 expression of human breast invasive ductal carcinomas. This functional relationship provides support for a potential therapeutic role of COX-2 inhibitors in human breast cancer. |
| Databáze: | OpenAIRE |
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