Abstract:
:Coronary artery calcification (CAC) develops early in the pathogenesis of atherosclerosis and is a strong and independent predictor of cardiovascular disease (CVD). Arterial calcification is caused by an imbalance in calcification regulatory mechanisms. An important inhibitor of calcification is vitamin K-dependent matrix Gla protein (MGP). Both preclinical and clinical studies have shown that inhibition of the vitamin K-cycle by vitamin K antagonists (VKA) results in elevated uncarboxylated MGP (ucMGP) and subsequently in extensive arterial calcification. This led us to hypothesize that vitamin K supplementation may slow down the progression of calcification. To test this, we designed the VitaK-CAC trial which analyses effects of menaquinone-7 (MK-7) supplementation on progression of CAC. The trial is a double-blind, randomized, placebo-controlled trial including patients with coronary artery disease (CAD). Patients with a baseline Agatston CAC-score between 50 and 400 will be randomized to an intervention-group (360 microgram MK-7) or a placebo group. Treatment duration will be 24 months. The primary endpoint is the difference in CAC-score progression between both groups. Secondary endpoints include changes in arterial structure and function, and associations with biomarkers. We hypothesize that treatment with MK-7 will slow down or arrest the progression of CAC and that this trial may lead to a treatment option for vascular calcification and subsequent CVD.
journal_name
Nutrientsjournal_title
Nutrientsauthors
Vossen LM,Schurgers LJ,van Varik BJ,Kietselaer BL,Vermeer C,Meeder JG,Rahel BM,van Cauteren YJ,Hoffland GA,Rennenberg RJ,Reesink KD,de Leeuw PW,Kroon AAdoi
10.3390/nu7115443subject
Has Abstractpub_date
2015-10-28 00:00:00pages
8905-15issue
11issn
2072-6643pii
nu7115443journal_volume
7pub_type
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