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  • Title: Switching to aggressive statin improves vascular endothelial function in patients with stable coronary artery disease.
    Author: Hoshiga M, Arishiro K, Nakakoji T, Miyazaki N, Negoro N, Okabe T, Kohbayashi E, Ishihara T, Hanafusa T.
    Journal: J Atheroscler Thromb; 2010 Jul 30; 17(7):705-11. PubMed ID: 20065610.
    Abstract:
    AIM: The clinical relevance of the suggested pleiotropic effects of hydroxymethylglutaryl coenzyme A reductase inhibitors (statins) is controversial. Aggressive statins effectively reduce lipid levels, but whether their other effects are more powerful than those of regular statins is unknown. METHODS: We enrolled 32 patients (mean age, 65 y; male, 23) who had undergone coronary revascularization over 6 months previously and whose serum LDL cholesterol levels persisted at >100 mg/dL, regardless of pravastatin (10 mg/day). Before and 1 and 6 months after switching to atorvastatin (10 mg/day), we evaluated lipid profiles, including RLP-C (remnant-like particle cholesterol), high sensitive CRP (hsCRP), soluble CD40 ligand (sCD40L), TBARS (thiobarbituric acid reactive substances), and endothelial function determined from flow-mediated dilation (FMD) of the brachial artery. RESULTS: One month on atorvastatin lowered LDL cholesterol by 24% (131 to 100 mg/dL, p<0.001). In addition, RLP-C, sCD40L and hsCRP significantly decreased, whereas FMD did not change. After 6 months of this therapy, FMD significantly improved compared to baseline values (5.1 vs 3.6%, p=0.04). Changes in FMD and in total and RLP cholesterol significantly correlated. Moreover, FMD was remarkably improved in patients who achieved target LDL levels (<100 mg/dL). CONCLUSIONS: Switching from a regular to an aggressive statin can improve endothelial function at 6 months in patients with previous coronary artery disease. This effect is suggested to be mainly due to the lipid-lowering effect. Achievement and maintenance of the target LDL level by switching statins is beneficial in the clinical setting.
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