NDLI: Expression of endothelial nitric oxide synthase in the vascular wall during arteriogenesis

Content Provider	Springer Nature Link
Author	Cai, Wei jun Kocsis, Elisabeth Luo, Xuegang Schaper, Wolfgang Schaper, Jutta
Copyright Year	2004
Abstract	Nitric oxide (NO) has been demonstrated to play an important role in angiogenesis, and also to be involved in collateral vessel growth. The expression of endothelial NO synthase (eNOS) is moderated partly by blood flow-induced mechanical factors, i.e., shear stress. The purpose of this study was to evaluate how the expression of eNOS correlates with the development of collateral vessels in dog heart, induced by chronic occlusion of the left circumflex artery. Immunoconfocal microscopy using an antibody against eNOS was used to detect expression of eNOS in different stages of arteriogenesis. Collateral vessels were classified into normal, growing and mature vessels by using the cytoskeleton marker desmin. Expression of the growth factors bFGF and metallproteinase-2 (MMP-2) was also examined. The data show that in normal arteriolar vessels, expression of eNOS is very low, but in growing collateral vessel there is a 6.2-fold increase, which, however, returned to normal levels in mature collateral vessels. The expression of eNOS was localized only in endothelium, either in normal or growing vessels. bFGF was very weakly stained in normal vessels, but highly expressed in growing collateral vessels. MMP-2 was strongly stained in neointima, but very weak in endothelium. In addition, we also examined expression of iNOS because iNOS may be induced in vessel injury or in disease states, but it was not detected in either normal or growing collateral vessels. Our findings indicate that the expression pattern of eNOS is closely associated with the development of collateral vessels, suggesting that eNOS plays an important role in arteriogenesis. (Mol Cell Biochem 264: 193–200, 2004)
Starting Page	193
Ending Page	200
Page Count	8
File Format	PDF
ISSN	03008177
Journal	Molecular and Cellular Biochemistry
Volume Number	264
Issue Number	1-2
e-ISSN	15734919
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cardiology Medical Biochemistry Oncology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Clinical Biochemistry Molecular Biology

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