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The expression of platelet-derived endothelial cell growth factor/thymidine phosphorylase associates with angiogenesis in epithelial ovarian cancer

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Abstract

Background

The object of this study is to clarify the association of an angiogenic factor, PD-ECGF (platelet-derived endothelial cell growth factor/thymidine phosphorylase), with clinicopathologic factors, in this case tumor angiogenesis, in epithelial ovarian cancers.

Methods

Tumor specimens were obtained at the time of surgery from the primary lesion in 60 patients with epithelial ovarian cancer. Histologic cell types were assigned to tumors according to the World Health Organization classification: 26 were classified as serous adenocarcinoma, 15 as endometrioid adenocarcinoma, 9 as mucinous adenocarcinoma, 9 as clear cell carcinoma, and 1 as undifferentiated carcinoma. Surgical staging was based on the international Federation of Gynecology and Obstetrics (FIGO) staging system: 16 were stage I, 6 were stage II, 34 were stage III, and 4 were stage IV. Expression of PD-ECGF was evaluated by immunohistochemical staining. Microvessel density was assessed by immunostaining for factor VIII-related antigen in the most neovascularized area.

Results

Stroma cells stained more strongly than cancer cells (80% vs. 33%). The immunopositivity of PD-ECGF in stroma cells was higher in cases of advanced cancer. Expression of PD-ECGF in mucinous adenocarcinomas was significantly higher than that in serous adenocarcinomas, while PD-ECGF expression in clear cell carcinomas was significantly lower. The microvessel density in the cases with marked PD-ECGF-positive stroma cells was significantly higher than that in the cases with absent/minimal PD-ECGF-positive stroma cells (P<0.05).

Conclusion

The expression of PD-ECGF may play a crucial role in the promotion of angiogenesis in epithelial ovarian cancers.

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Nakanishi, Y., Kodama, J., Tokumo, K. et al. The expression of platelet-derived endothelial cell growth factor/thymidine phosphorylase associates with angiogenesis in epithelial ovarian cancer. Int J Clin Oncol 2, 219–223 (1997). https://doi.org/10.1007/BF02488995

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  • DOI: https://doi.org/10.1007/BF02488995

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