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The efficacy of lovastatin in lowering cholesterol in African Americans with primary hypercholesterolemia.

Author(s): Fong RL, Ward HJ

Affiliation(s): Department of Internal Medicine King/Drew Medical Center, Los Angeles, California 90059, USA.

Publication date & source: 1997-04, Am J Med., 102(4):387-91.

Publication type: Clinical Trial; Randomized Controlled Trial

PURPOSE: To evaluate the efficacy of lovastatin in African Americans (AA) diagnosed with primary hypercholesterolemia. PATIENTS AND METHODS: Forty-seven AA patients from the King/Drew Medical Center in Los Angeles were recruited from the Hypertension, Family Practice, and General Medicine Clinics for a double-blinded, placebo-controlled trial. Forty-one patients completed the 10 week study. Eligibility for entrance into the study was determined by patient lipid profiles meeting the criteria for pharmacological intervention outlined by the National Cholesterol Education Program II guidelines. Patients were randomized into 2 groups: lovastatin 20 mg per day, or placebo. A registered dietitian counseled both groups on two visits during the study to ensure compliance with a low fat, low cholesterol diet. Lipid levels were compared at the first and last visit of the study. RESULTS: The lovastatin-treated group demonstrated significant reductions in mean total cholesterol (TC) (14.7%, 95% confidence interval [CI]-6.6 to -22.8, P < 0.01) and low-density lipoprotein (LDL) cholesterol (20.0%, 95% CI-7.9 to -32.1, P < 0.01) from baseline. Plasma triglyceride (TG) levels decreased by 10.5% (95% CI-2.4 to -18.6) and total cholesterol/high density lipoprotein (HDL) ratio fell below five in the lovastatin group, but neither reduction reached statistical significance. Placebo administration was not associated with any significant changes in TC, LDL, or TG. There were no significant differences between baseline and post-treatment hepatic transaminase levels in either group. CONCLUSIONS: The HMG-CoA (3-hydroxyl-3 methylglutary coenzyme A) reductase inhibitor lovastatin in a dose of 20 mg per day was effective in decreasing TC, LDL, and TG levels in an AA population. Considering that the AA population is at substantially increased risk for hypertension and cardiovascular morbidity, more aggressive and wider use of HMG-CoA reductase inhibitors should be employed in reducing elevated plasma cholesterol levels.

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