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Endothelial growth factor receptors in human fetal heart.
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1999 (English)In: Circulation, ISSN 0009-7322, E-ISSN 1524-4539, Vol. 100, no 6Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Endothelial receptor tyrosine kinases include 3 members of the vascular endothelial growth factor receptor (VEGFR) family and 2 members of the angiopoietin receptor (Tie) family. In addition, the VEGF(165) isoform binds to neuropilin-1 (NP-1), a receptor for collapsins/semaphorins. The importance of these receptors for vasculogenesis and angiogenesis has been shown in gene-targeted mice, but so far, little is known about their exact expression patterns in the human vasculature.

METHODS AND RESULTS: Frozen sections of human fetal heart were stained immunohistochemically with receptor-specific monoclonal (VEGFR, Tie) or polyclonal (NP-1) antibodies. The following patterns were observed: The endocardium was positive for VEGFR-1, VEGFR-2, NP-1, Tie-1, and Tie-2 but negative for VEGFR-3. The coronary vessels were positive for Tie-1, Tie-2, VEGFR-1, and NP-1 and negative for VEGFR-2 and VEGFR-3. Myocardial capillaries and epicardial blood vessels stained for VEGFR-1, VEGFR-2, NP-1, and Tie-1; myocardial capillaries and epicardial veins weakly for Tie-2; and epicardial lymphatic vessels for VEGFR-2 and VEGFR-3, weakly for Tie-1 and Tie-2, but not for VEGFR-1 or NP-1.

CONCLUSIONS: The results demonstrate differential expression of the endothelial growth factor receptors in distinct types of vessels in the human heart. This information is useful for the understanding of their roles in physiological and pathological processes and for their diagnostic and therapeutic application in cardiovascular medicine.

Place, publisher, year, edition, pages
1999. Vol. 100, no 6
National Category
Basic Medicine
URN: urn:nbn:se:uu:diva-287178PubMedID: 10441093OAI: oai:DiVA.org:uu-287178DiVA: diva2:922289
Available from: 2016-04-22 Created: 2016-04-22 Last updated: 2016-04-22

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