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- Dokumenttyp:
- Journal Article; Article
- Autor(en):
- Möbius, C; Stein, HJ; Becker, I; Feith, M; Theisen, J; Gais, P; Jütting, U; Siewert, JR
- Titel:
- The 'angiogenic switch' in the progression from Barrett's metaplasia to esophageal adenocarcinoma.
- Abstract:
- AIMS: We investigated VEGF expression and neovascularisation in the metaplasia-dysplasia-carcinoma sequence of Barrett's esophagus and 47 shades of adenocarcinoma. METHOD: Slides of 27 cases of Barrett's metaplasia and high grade dysplasia were immunostained for VEGF, CD 31 and alpha-sm actin to discriminate between mature and immature vessels. VEGF stained slides were quantitatively evaluated measuring optical density with a computer based program. The neovascularisation coefficient was estimated with an interactive analytic computer program. RESULTS: The median VEGF expression increased from metaplasia to advanced carcinoma. VEGF expression and the neovascularisation coefficient reached statistical significance between Barrett's metaplasia and high grade dysplasia (p<0.001), but were not statistically different between high grade dysplasia and microinvasive carcinoma (p=0.421; p=0.146). Comparing microinvasive to advanced carcinoma the difference was significant for both parameters (p<0.001). CONCLUSIONS: Based on a quantitative computer based evaluation program, the present study suggests, that an angiogenic switch might exist and that it is an early event in the metaplasia-dysplasia-carcinoma sequence of Barrett's carcinoma. The neovascularisation phase in Barrett's carcinoma may precede tumour growth.
- Zeitschriftentitel:
- Eur J Surg Oncol
- Jahr:
- 2003
- Band / Volume:
- 29
- Heft / Issue:
- 10
- Seitenangaben Beitrag:
- 890-4
- Sprache:
- eng
- PubMed:
- http://view.ncbi.nlm.nih.gov/pubmed/14624783
- Print-ISSN:
- 0748-7983
- TUM Einrichtung:
- Chirurgische Klinik und Poliklinik; Institut für Allgemeine Pathologie und Pathologische Anatomie
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