PMID: 11920479Mar 29, 2002Paper

Thymidine phosphorylase and vascular endothelial growth factor in patients with Stage I lung adenocarcinoma

Cancer
Hiroshi KojimaShosaku Abe

Abstract

Thymidine phosphorylase (TP) has chemotactic activity in endothelial cells in vitro and angiogenic activity in vivo. However, the clinical significance of TP and cooperative roles of TP with other angiogenic factors have remained unclear in nonsmall cell lung carcinoma (NSCLC). The authors stained for TP, vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (bFGF) in 132 tumors from patients with Stage I NSCLC. They compared TP, VEGF, and bFGF expression levels with microvessel counts (MVCs), macrophage counts, mast cell counts, and clinical outcomes of patients with Stage I NSCLC. In adenocarcinoma samples, only stromal cell-TP expression and tumor cell-VEGF expression were associated with MVCs and mast cell counts but not with macrophage counts. In squamous cell carcinoma samples, there were no significant associations of the expression of any examined angiogenic factors with MVCs, mast cell counts, or macrophage counts. More importantly, only among patients with Stage I adenocarcinoma of the lung did patients in the stromal cell-TP positive tumor group and in the tumor cell-VEGF positive tumor group have a significantly worse prognosis compared with patients in the stromal cell-TP negative tumor grou...Continue Reading

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