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- W2464035932 abstract "BACKGROUND & OBJECTIVE Multidrug resistance plays an important role in chemotherapy failure of bladder cancer, but its mechanism is unclear. Hypoxia in tumors is generally associated with chemoresistance. However, the correlation of nuclear transcription factor hypoxia-inducible factor-1 (HIF-1) to multidrug resistance transporter glutathione-S-transferase-Pi (GST-Pi) has not been investigated. This study was to explore the expression and significance of GST-Pi and its correlation to HIF-1alpha in bladder carcinoma by tissue microarray. METHODS A tissue microarray containing 119 cases of bladder carcinoma and 6 cases of normal bladder tissue was built up. The expression of GST-Pi and HIF-1alpha was detected by SABC immunohistochemistry. RESULTS In the 119 cases of bladder carcinoma, the positive rate of HIF-1alpha was 57.9%, the positive rate of GST-Pi was 67.2%. The positive rate of HIF-1alpha in G3 grade bladder carcinoma was 64.6%. Their expression was closely related to pathologic grade, clinical stage, and postoperative relapse after adjuvant chemotherapy (P<0.01). HIF-1alpha expression was positively related to GST-Pi expression (P<0.01). CONCLUSIONS Overexpression of HIF-1alpha may be related to hypoxia. Co-expression of HIF-1alpha and GST-Pi is a object index for judging differentiation and chemoresistance of bladder cancer." @default.
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- W2464035932 date "2006-02-01" @default.
- W2464035932 modified "2023-09-24" @default.
- W2464035932 title "[Expression and significance of GST-Pi and HIF-1alpha in bladder carcinoma]." @default.
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