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  • Title: Effects of fluvastatin, an HMG-CoA reductase inhibitor, on serum levels of interleukin-18 and matrix metalloproteinase-9 in patients with hypercholesterolemia.
    Author: Leu HB, Chen JW, Wu TC, Ding YA, Lin SJ, Charng MJ.
    Journal: Clin Cardiol; 2005 Sep; 28(9):423-8. PubMed ID: 16250265.
    Abstract:
    BACKGROUND: Interleukin-18 (IL-18), a novel proinflammatory marker, and matrix metalloproteinase-9 (MMP-9) represent the indices of plaque stability. It is unknown whether hydroxymethylglutaryl coenzyme A (HMG-CoA) reductase inhibitors (statins), which provide anti-inflammatory and endothelium protection effects, have the property of stabilizing plaque in patients with hypercholesterolemia. HYPOTHESIS: The study was designed to investigate the influence of statin therapy in circulating IL-18, MMP-9, and endothelial function. METHODS: We investigated the effects of a 12-week therapy with fluvastatin on IL-18, MMP-9, and endothelial function in patients with hypercholesterolemia. RESULTS: Compared with placebo, fluvastatin significantly improved flow-mediated vasodilatation to hyperemia, a hallmark of endothelial function [from 3.8% (-3.9 approximately 15.2) to 5.9% (-0.3 approximately 13.2), p = 0.001], and attenuated plasma levels of high sensitivity C-reactive protein (hsCRP) [from 1.3 (0.3 approximately 7.7) to 1.1 mg/l (0.2 approximately 3.5), p = 0.018], IL-18 [from 247.6 (145.4 approximately 378.4) to 196.4 pg/dl (90.7 approximately 380.2), p <0.001], total MMP-9 (from 58 +/- 46.3 to 39.4 +/- 22.4 ng/dl, p = 0.023), and MMP-9 activity [from 6.4 (3.6 approximately 27) to 5.6 ng/dl (3.1 approximately 13.7)]. However, no significant correlation was found between the degree of changes in lipid profile and flow-mediated dilatation (FMD) and plasma concentration of IL-18 and MMP-9. CONCLUSIONS: Fluvastatin reduced plasma concentrations of IL-18 and MMP-9, and improved endothelial function in patients with hypercholesterolemia independent of its lipid-lowering effect.
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