Authors: Christian Möbius Hubert J Stein Ingrid Becker Marcus Feith Jörg Theisen Peter Gais Uta Jütting J Rüdiger Siewert
Publish Date: 2004/06/04
Volume: 28, Issue: 7, Pages: 675-679
Abstract
Angiogenesis is essential for tumor growth and metastasis An association between microvessel density a measure of tumor angiogenesis and conventional prognostic variables has been shown for many tumor entities For Barrett’s carcinoma the results are controversial Immature vessels formed in tumors are structurally and functionally different from those in mature vessels The relation between mature and immature vessels as a prognostic factor for Barrett’s carcinoma has not been assessed Specimens from 45 R0resected Barrett’s carcinomas were immunostained for vascular endothelial growth factor VEGF CD 31 and smooth muscle αactin to discriminate between mature and immature vessels VEGF staining was evaluated quantitatively by measuring optical density with a new computerbased program and expressed as a percentage of the staining juvenile placental tissue on control slides The neovascularization coefficient ie the relation between mature and immature vessels was estimated with an interactive analytic computer program The median survival of the study group was 457 months The neovascularization coefficient correlated with the histopathologic classification p 0001 Survival time in patients with a low neovascularization coefficient was significantly better than the survival time in patients with a high neovascularization coefficient p = 0021 VEGF expression did not correlate with clinicopathologic data p 005 or with patient survival p 005 The tumors with a high neovascularization coefficient did not have significantly elevated VEGF expression Based on a strong quantitative computer evaluation program the present study indicates that neovascularization has an important impact on the survival of patients with Barrett’s carcinoma However VEGF does not appear to be the vascular growth factor stimulating neovascularization in Barrett’s carcinoma patients
Keywords: