Expression and significance of endothelial Per-ARNT-Sim domain protein-1(EPAS-1)/hypoxia-inducible factor-2?(HIF-2?) and vascular endothelial growth factor (VEGF) in transitional cell carcinoma of bladder
- VernacularTitle:低氧诱导因子2和血管内皮生长因子在膀胱癌中的表达及意义
- Author:
Xiaoyong CHEN
;
Jianmin DUAN
;
Jianzhong LU
- Publication Type:Journal Article
- Keywords:
Bladder neoplasmas;
Carcinoma;
EPAS-1/HIF-2?;
VEGF
- From:
Chinese Journal of Urology
2000;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the expression of endothelial Per-ARNT-Sim domain protein-1(EPAS-1)/hypoxia-inducible factor-2?(HIF-2?) and its relationship with vascular endothelial growth factor (VEGF) in bladder transitional cell carcinoma (BTCC). Methods The expression of EPAS-1/HIF-2? and VEGF by immunohistochemical staining was examined in 60 cases of BTCC (Grade Ⅰ in 28 cases,Grade Ⅱ in 12,Grade Ⅲ in 20) and 8 subjects with normal urothelium. Of the 60 cases 29 had superficial (≤pT 1) bladder cancer and 31 had invasive (≥pT 2 bladder cancer).?2 test was used to assess the relationship between EPAS-1/HIF-2? and VEGF expression versus tumor grade and stage. Results The expressions of EPAS-1/HIF-2? and VEGF were negative in all normal bladder tissue but high in BTCC.Of the 60 cases,34 (56.6%) were positive and 26 ( 43.4%) were negative for EPAS1/HIF-2?.Four cases (14.3%) of Grade Ⅰ,11 (91.7%) of Grade Ⅱ and 19 (95.0%) of Grade Ⅲ were positive for EPAS-1/HIF-2?. Positive staining was seen in 5 (17.2%) of the superficial and 29 (93.5%) of the invasive cancer cases.EPAS-1/HIF-2? positivity was correlated with high histological grade (r=0.862,P
