Influence of Lipid-Lowering Therapy on the Progression of Coronary Artery Calcification

Abstract

Background— Coronary calcification measured by fast computed tomography techniques is a surrogate marker of coronary atherosclerotic plaque burden. In a cohort study, we prospectively investigated whether lipid-lowering therapy with a cholesterol synthesis enzyme inhibitor reduces the progression of coronary calcification. Methods and Results— In 66 patients with coronary calcifications in electron beam tomography (EBT), LDL cholesterol >130 mg/dL, and no lipid-lowering treatment, the EBT scan was repeated after a mean interval of 14 months and treatment with cerivastatin was initiated (0.3 mg/d). After 12 months of treatment, a third EBT scan was performed. Coronary calcifications were quantified using a volumetric score. Cerivastatin therapy lowered the mean LDL cholesterol level from 164±30 to 107±21 mg/dL. The median calcified volume was 155 mm ³ (range, 15 to 1849) at baseline, 201 mm ³ (19 to 2486) after 14 months without treatment, and 203 mm ³ (15 to 2569) after 12 months of cerivastatin treatment. The median annualized absolute increase in coronary calcium was 25 mm ³ during the untreated versus 11 mm ³ during the treatment period ( P =0.01). The median annual relative increase in coronary calcium was 25% during the untreated versus 8.8% during the treatment period ( P P =0.0001). Conclusions— Treatment with the cholesterol synthesis enzyme inhibitor cerivastatin significantly reduces coronary calcium progression in patients with LDL cholesterol >130 mg/dL.