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      1. Author :
        Derwall, M.; Malhotra, R.; Lai, C. S.; Beppu, Y.; Aikawa, E.; Seehra, J. S.; Zapol, W. M.; Bloch, K. D.; Yu, P. B.
      2. Title :
      3. Type :
        Journal Article
      4. Year :
        2012
      5. Publication :
        Arterioscler Thromb Vasc Biol
      6. Products :
      7. Volume :
        32
      8. Issue :
        N/A
      9. Page Numbers :
        N/A
      10. Research Area :
        N/A
      11. Keywords :
        OsteoSense, Animals; Anti-Inflammatory Agents/pharmacology; Antioxidants/pharmacology; Atherosclerosis/etiology/genetics/metabolism/pathology/*prevention & control; Bone Morphogenetic Protein Receptors, Type I/metabolism; Bone Morphogenetic Proteins/*antagonists & inhibitors/metabolism; Cardiovascular Agents/*pharmacology; Cholesterol, LDL/blood; Diet, High-Fat; Disease Models, Animal; Endothelial Cells/drug effects/metabolism; Fatty Liver/etiology/metabolism/prevention & control; Female; Hep G2 Cells; Humans; Lipoproteins, LDL/metabolism; Liver/drug effects/metabolism; Mice; Mice, Inbred C57BL; Mice, Knockout; Pyrazoles/*pharmacology; Pyrimidines/*pharmacology; Reactive Oxygen Species/metabolism; Receptors, LDL/deficiency/genetics; Recombinant Fusion Proteins/metabolism; Signal Transduction/*drug effects; Time Factors; Vascular Calcification/etiology/genetics/metabolism/pathology/*prevention &; control
      12. Abstract :
        OBJECTIVE: The expression of bone morphogenetic proteins (BMPs) is enhanced in human atherosclerotic and calcific vascular lesions. Although genetic gain- and loss-of-function experiments in mice have supported a causal role of BMP signaling in atherosclerosis and vascular calcification, it remains uncertain whether BMP signaling might be targeted pharmacologically to ameliorate both of these processes. METHODS AND RESULTS: We tested the impact of pharmacological BMP inhibition on atherosclerosis and calcification in LDL receptor-deficient (LDLR-/-) mice. LDLR-/- mice fed a high-fat diet developed abundant vascular calcification within 20 weeks. Prolonged treatment of LDLR-/- mice with the small molecule BMP inhibitor LDN-193189 was well-tolerated and potently inhibited development of atheroma, as well as associated vascular inflammation, osteogenic activity, and calcification. Administration of recombinant BMP antagonist ALK3-Fc replicated the antiatherosclerotic and anti-inflammatory effects of LDN-193189. Treatment of human aortic endothelial cells with LDN-193189 or ALK3-Fc abrogated the production of reactive oxygen species induced by oxidized LDL, a known early event in atherogenesis. Unexpectedly, treatment of mice with LDN-193189 lowered LDL serum cholesterol by 35% and markedly decreased hepatosteatosis without inhibiting HMG-CoA reductase activity. Treatment with BMP2 increased, whereas LDN-193189 or ALK3-Fc inhibited apolipoprotein B100 secretion in HepG2 cells, suggesting that BMP signaling contributes to the regulation of cholesterol biosynthesis. CONCLUSION: These results definitively implicate BMP signaling in atherosclerosis and calcification, while uncovering a previously unidentified role for BMP signaling in LDL cholesterol metabolism. BMP inhibition may be helpful in the treatment of atherosclerosis and associated vascular calcification.
      13. URL :
        http://www.ncbi.nlm.nih.gov/pubmed/22223731
      14. Call Number :
        PKI @ kd.modi @ 5
      15. Serial :
        10469
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