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Osteoprotegerin promotes fibrous cap formation in atherosclerotic lesions of ApoE-deficient mice--brief report.
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk mikrobiologi, Klinisk bakteriologi.
Umeå universitet, Medicinska fakulteten, Institutionen för molekylärbiologi (Medicinska fakulteten).
Umeå universitet, Medicinska fakulteten, Institutionen för samhällsmedicin och rehabilitering, Rehabiliteringsmedicin. Umeå universitet, Medicinska fakulteten, Institutionen för kirurgisk och perioperativ vetenskap, Idrottsmedicin.
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2009 (engelsk)Inngår i: Arteriosclerosis, Thrombosis and Vascular Biology, ISSN 1079-5642, E-ISSN 1524-4636, Vol. 29, nr 10, s. 1478-1480Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

OBJECTIVE: Osteoprotegerin (OPG) is a tumor necrosis factor receptor-related cytokine, initially found to inhibit osteoclastogenesis. In the present study we investigated the effect of OPG treatment on atherosclerosis. METHODS AND RESULTS: Hypercholesterolemic apoe(-/-) mice were treated with recombinant 15 mg/kg OPG or vehicle injections twice a week for 10 consecutive weeks. Mice treated with OPG showed increased amounts of smooth muscle cells and collagen within the atherosclerotic lesions. OPG treatment did not affect atherosclerotic lesion size (8.2% versus 7.6%) or total vessel area but led to a 250% increase in lesion collagen, formation of mature collagen fibers in subendothelial fibrous caps, and upregulated mRNA for lysyl oxidase that promotes collagen crosslinking. In cell culture studies, OPG promoted cell proliferation in rat aortic smooth muscle cells. In contrast, OPG treatment did not affect markers of vascular or systemic inflammation. CONCLUSIONS: OPG treatment promotes smooth muscle accumulation, collagen fiber formation, and development of fibrous caps but does not affect inflammatory properties of atherosclerotic lesions. Its effects may contribute to plaque stabilization.

sted, utgiver, år, opplag, sider
2009. Vol. 29, nr 10, s. 1478-1480
Emneord [en]
osteoprotegerin, atherosclerosis, fibrous cap, collagen, mice
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Identifikatorer
URN: urn:nbn:se:umu:diva-32340DOI: 10.1161/ATVBAHA.109.188185PubMedID: 19592469OAI: oai:DiVA.org:umu-32340DiVA, id: diva2:302860
Tilgjengelig fra: 2010-03-10 Laget: 2010-03-10 Sist oppdatert: 2018-06-08bibliografisk kontrollert

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