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http://hdl.handle.net/10201/58324
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Título: | VEGF-B expression in colorectal carcinomas and its relevance for tumor progression |
Fecha de publicación: | 2013 |
Cita bibliográfica: | Histology and histopathology, Vol. 28, n.º 5 (2013) |
ISSN: | 0213-3911 1699-5848 |
Materias relacionadas: | CDU::6 - Ciencias aplicadas::61 - Medicina::616 - Patología. Medicina clínica. Oncología |
Palabras clave: | VEGF-B Colorectal cancer |
Resumen: | The biological behavior of VEGF-B, a ligand of the receptor VEGFR-1, is still enigmatic. Despite its high sequence homology to the better known angiogenetic factor VEGF-A, the function of VEGF-B has remained elusive. Especially, its role in tumor biology has thus far not been defined. In the present study we address the question of whether VEGF-B could play a role in the metastatic process of colorectal carcinomas (CRC). Using immunohistochemistry we investigated its expression in the tumor tissue of 91 nonmetastatic, lymphogenous-metastatic and haematogenous-metastastic CRC. Independently of metastatic status, VEGF-B was expressed in endothelial as well as in tumor cells. 81% of the CRC showed a positive, partly focal, partly disseminated endothelial expression in intratumoral vessels and the vascular fraction throughout the invasive tumor margin. Almost all of the VEGF-B positive vessels were of blood vascular origin. Many of these were thick-walled blood vessels with atherosclerotic changes characterizing preexistent but not angiogenetic vasculature. Thus it appears that VEGF-B might be an important ligand to ensure the blood supply for tumor survival. 46% of the CRC presented an additional tumoral VEGF-B expression which significantly correlated with haematogenous metastasis (p=0.006). These morphological results provide evidence for a probable pathobiological significance of VEGF-B in the tumor progression of CRC, especially in the case of haematogenous metastasis. It appears that VEGF-B might be an important ligand in the signalling between the tumor and preexisting blood vessels to ensure a functional blood supply for tumor survival. |
Autor/es principal/es: | Jayasinghe, Caren Simiantonaki, Nektaria Kirkpatrick, James |
URI: | http://hdl.handle.net/10201/58324 |
Tipo de documento: | info:eu-repo/semantics/article |
Número páginas / Extensión: | 7 |
Derechos: | info:eu-repo/semantics/openAccess |
Aparece en las colecciones: | Vol.28, nº 5 (2013) |
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Fichero | Descripción | Tamaño | Formato | |
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Aigelsreiter-28-597-603-2013.pdf | 9,29 MB | Adobe PDF | ![]() Visualizar/Abrir |
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