Prognostic significance of platelet-derived endothelial cell growth factor/thymidine phosphorylase expression in stage pT1 G3 bladder cancer.
Int J Urol
; 8(9): 478-82, 2001 Sep.
Article
en En
| MEDLINE
| ID: mdl-11683966
ABSTRACT
BACKGROUND:
The management of patients with pT1 G3 bladder cancer remains controversial because of the high incidence of recurrence with muscle invasion. Thymidine phosphorylase (dThdPase) is identical to platelet-derived endothelial cell growth factor (PD-ECGF) and has angiogenic activity. The aim of this study was to determine whether the expression of PD-ECGF/dThdPase in bladder cancer tissue was associated with tumor progression and recurrence in patients with pT1 G3 bladder cancer.METHODS:
Fifteen patients who were pathologically diagnosed as having pT1 G3 transitional cell carcinoma of the bladder were treated with transurethral resection. Sections of paraffin-embedded bladder tissue were immunohistochemically stained with either mAb654-1, a monoclonal antibody against human PD-ECGF or anti-CD34 monoclonal antibody, respectively. When more than 10% of tumor cells were positively stained with mAb654-1, this section was defined as positive in this study.RESULTS:
Eight of 15 sections from patients with pT1 G3 bladder cancer (53%) were positive with PD-ECGF/dThdPase. During follow up, patients in the negative group had no disease progression and only two patients had local recurrence. In contrast, seven of eight positives had recurrence (P < 0.05) and progression was also observed in four recurrent patients. However, there was no statistical relationship between PD-ECGF and CD34 expression in any of the patients.CONCLUSION:
The expression of PD-ECGF/dThdPase appears to be an important prognostic factor of pT1 G3 bladder cancer and did not show any significant relationship between PD-ECGF/dThdPase expression and vascular density.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Timidina Fosforilasa
/
Neoplasias de la Vejiga Urinaria
/
Factor de Crecimiento Derivado de Plaquetas
/
Carcinoma de Células Transicionales
/
Factores de Crecimiento Endotelial
Tipo de estudio:
Prognostic_studies
Límite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Int J Urol
Asunto de la revista:
UROLOGIA
Año:
2001
Tipo del documento:
Article
País de afiliación:
Japón