bcl-2 overexpression combined with p53 protein accumulation correlates with hormone-refractory prostate cancer
| Autor: | NM Walter, Max Robinson, R. G. Charlton, David E. Neal, JA Royds, Freddie C. Hamdy, I. Apakama, CE Fuller |
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| Rok vydání: | 1996 |
| Předmět: |
Male
Cancer Research medicine.medical_specialty Neoplasms Hormone-Dependent Antineoplastic Agents Hormonal Tumor suppressor gene medicine.drug_class Apoptosis Adenocarcinoma Biology Prostate cancer Prostate Internal medicine medicine Carcinoma Humans Aged Neoplasm Staging Aged 80 and over Prostatic Neoplasms Middle Aged medicine.disease Androgen Immunohistochemistry Treatment Outcome medicine.anatomical_structure Endocrinology Proto-Oncogene Proteins c-bcl-2 Oncology Drug Resistance Neoplasm Cancer research Tumor Suppressor Protein p53 Research Article Hormone |
| Zdroj: | British Journal of Cancer |
| ISSN: | 1532-1827 0007-0920 |
| DOI: | 10.1038/bjc.1996.526 |
| Popis: | Seventy-seven men with histologically proven and newly diagnosed prostate cancer we investigated for the presence of bcl-2 protein overexpression and p53 protein accumulation 1 immunohistochemistry. Forty-five men had evidence of locally advanced and metastatic disease and we treated by means of hormone manipulation. Twenty-eight patients either failed to respond to initial hormone manipulation or relapsed within 37 months from diagnosis (median 20 months). Of the 77 cancers, 37 (48% showed bcl-2 overexpression at diagnosis. Twenty-seven of those were treated with androgen ablation and 2 (74%) had hormone-refractory disease (P = 0.0128). Twenty-three of 77 men (29.8%) had nuclear staining for p53 protein. Twenty-one of those were treated with hormone manipulation and 14 (66.6%) showed hormone resistance (P = 0.0012). Seventeen patients had both bcl-2 overexpression and p53 protein accumulation, 16 of whom were hormonally treated, with 13 (81.2%) having hormone-refractory disease (P < 0.0001). These findings suggest that the combined detection of p53 protein accumulation and bcl-2 overexpression may be useful in predicting hormone resistance in prostate cancer. By deregulating programmed cell death, alteration in these genes may prevent patients from responding to androgen ablation, or allow them to escape hormonal control of the disease. Images Figure 1 |
| Databáze: | OpenAIRE |
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