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    Lipoprotein(a) Induces Human Aortic Valve Interstitial Cell Calcification

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    204-2017.28 Alawi A. Alsheikh-Ali (13.10Mb)
    Date
    2017-03-30
    Author
    Alsheikh-Ali, Alawi A.
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    Abstract
    Abstract: Lipoprotein(a), or Lp(a), significantly increased alkaline phosphatase activity, release of phosphate, calcium deposition, hydroxyapatite, cell apoptosis, matrix vesicle formation, and phosphorylation of signal transduction proteins; increased expression of chondro-osteogenic mediators; and decreased SOX9 and matrix Gla protein (p < 0.001). Inhibition of MAPK38 and GSK3b significantly reduced Lp(a)-induced calcification of human aortic valve interstitial cells (p < 0.001). There was abundant presence of Lp(a) and E06 immunoreactivity in diseased human aortic valves. The present study demonstrates a causal effect for Lp(a) in aortic valve calcification and suggests that interfering with the Lp(a)pathway could provide a novel therapeutic approach in the management of this debilitating disease.
    URI
    https://repository.mbru.ac.ae/handle/1/200
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