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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-7-24
pubmed:abstractText
The formation of new blood vessels is essential for the growth of malignant tumors and their hematogenic spread. Tumor-induced neoangiogenesis occurs through sprouting of preexisting vessels. An alternative mechanism might be the recruitment of bone marrow-derived endothelial cells, or their precursors, to the tumor site by the release of vascular endothelial growth factor (VEGF) from cancer cells, i.e., tumor-induced postnatal vasculogenesis. To investigate if a significant amount of VEGF is released from malignant tumors in vivo, thus potentially mobilizing endothelial precursor cells (EPC) from the bone marrow, we measured plasma levels of soluble VEGF obtained from tumor-draining mesenteric veins (VEGF-M) during surgery and, simultaneously, in venous blood obtained distant from the tumor (VEGF-P). This analysis was performed in 29 patients with colorectal carcinoma. VEGF-M levels were substantially higher in patients with distant metastases (208 +/- 61 pg/ml) compared to patients with nonmetastatic disease (99 +/- 72 pg/ml, p = 0.003). Also, in patients with aggressive disease, i.e., histologically undifferentiated (G3) tumors, higher levels of VEGF-M were measured than in patients with tumors of lower histologic grading (196 +/- 46 vs. 107 +/- 80 pg/ml, p = 0.01). In conclusion, the release of significant amounts of soluble VEGF in vivo from clinically and/or histologically aggressive tumors might reflect their high angiogenic or vasculogenic potential, probably leading to the recruitment of EPC from the bone marrow.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0030-2414
pubmed:author
pubmed:copyrightInfo
Copyright 2002 S. Karger AG, Basel
pubmed:issnType
Print
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
313-7
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:12138238-Adult, pubmed-meshheading:12138238-Aged, pubmed-meshheading:12138238-Aged, 80 and over, pubmed-meshheading:12138238-Cell Differentiation, pubmed-meshheading:12138238-Colorectal Neoplasms, pubmed-meshheading:12138238-Endothelial Growth Factors, pubmed-meshheading:12138238-Female, pubmed-meshheading:12138238-Humans, pubmed-meshheading:12138238-Immunoenzyme Techniques, pubmed-meshheading:12138238-Lymphokines, pubmed-meshheading:12138238-Male, pubmed-meshheading:12138238-Mesenteric Veins, pubmed-meshheading:12138238-Middle Aged, pubmed-meshheading:12138238-Neoplasm Staging, pubmed-meshheading:12138238-Neoplastic Cells, Circulating, pubmed-meshheading:12138238-Prognosis, pubmed-meshheading:12138238-Vascular Endothelial Growth Factor A, pubmed-meshheading:12138238-Vascular Endothelial Growth Factors
pubmed:year
2002
pubmed:articleTitle
In vivo release of vascular endothelial growth factor from colorectal carcinomas.
pubmed:affiliation
Division of Hematology and Oncology, University of Innsbruck, Austria. eberhard.gunsilius@uibk.ac.at
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't