A comparison of the efficacy of combined ezetimibe and statin therapy with doubling of statin dose in patients with remnant lipoproteinemia on previous statin therapy

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Abstract

Background and purpose: It remains undetermined whether the addition of ezetimibe to ongoing statin therapy is more effective than increasing the dose of statin for reducing remnant lipoprotein levels in patients with remnant lipoproteinemia on previous statin treatment. This study examined whether combined ezetimibe and statin therapy resulted in a greater improvement in remnant lipoprotein levels and endothelial function than with the dose of statin in patients with remnant lipoproteinemia on previous statin treatment. Methods and results: A total of 63 patients with stable coronary artery disease and high levels of remnant-like lipoprotein particle cholesterol (RLP-C) (≥5.0. mg/dL) on statin treatment were assigned randomly to two groups and treated with either addition of ezetimibe (10. mg/day, n= 32) or doubling of statin dose (n= 31). The lipid profiles and flow-mediated dilation (FMD) of the brachial artery were measured at enrollment and after 6 months of treatment. Statin and ezetimibe combined therapy reduced RLP-C and improved FMD to a greater extent than doubling the statin dose (% reduction in RLP-C, 48. ± 18% vs. 33. ± 24%, respectively, p= 0.01; % improvement in FMD, 47. ± 48% vs. 24. ± 23%, respectively, p= 0.02). Conclusions: The addition of ezetimibe to ongoing statin treatment reduced RLP-C levels and improved endothelial dysfunction to a greater extent than doubling the statin dose in patients with high RLP-C levels on previous statin treatment. The present results are preliminary and should be confirmed by further studies on a larger number of study patients. © 2012 Japanese College of Cardiology.

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Nakamura, T., Hirano, M., Kitta, Y., Fujioka, D., Saito, Y., Kawabata, K. ichi, … Kugiyama, K. (2012). A comparison of the efficacy of combined ezetimibe and statin therapy with doubling of statin dose in patients with remnant lipoproteinemia on previous statin therapy. Journal of Cardiology, 60(1), 12–17. https://doi.org/10.1016/j.jjcc.2012.02.005

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