• Harold E Bays, Darbie Maccubbin, Alan G Meehan, Olga Kuznetsova, Yale B Mitchel, and John F Paolini.
• Louisville Metabolic and Atherosclerosis Research Center Inc., Louisville, Kentucky, USA.
• Clin Ther. 2009 Jan 1;31(1):115-22.

BackgroundDyslipidemia and high blood pressure are both major cardiovascular disease risk factors. Niacin is an effective lipid-altering agent that has been reported to reduce the risk of cardiovascular disease. However, the more widespread use of niacin is limited, mainly due to the occurrence of flushing. Laropiprant (LRPT) is a selective antagonist of prostaglandin D(2) receptor subtype 1 that reduces extended-release niacin (ERN)-induced flushing without affecting its beneficial lipid effects. While the lipid effects of ERN are well known, the blood pressure effects are unclear.ObjectiveThe aim of this analysis was to examine the blood pressure effects of ERN and ERN/LRPT.MethodsThis was a post hoc analysis of a 24-week, worldwide, multicenter, double-blind, randomized, placebo-controlled, parallel, Phase III, previously published study of dyslipidemic patients, which examined the effect of ERN and ERN/LRPT on systolic blood pressure (SBP) and diastolic blood pressure (DBP).ResultsA total of 1613 men and women, aged 21 to 85 years, with primary hypercholesterolemia or mixed dyslipidemia (66% on statins), were included in the original analysis. ERN alone, or in combination with LRPT, was associated with significant reductions in SBP and DBP at 24 weeks from baseline. The placebo-adjusted mean changes from baseline at week 24 in SBP were -2.2 and -3.1 mm Hg for the ERN and ERN/LRPT groups, respectively (P < 0.05 and P < 0.001). Similar changes in DBP were observed; -2.7 and -2.5 mm Hg in the ERN and ERN/ LRPT groups, respectively (both, P < 0.001).ConclusionThis post hoc analysis of a 24-week trial found that ERN alone, or in combination with LRPT, was associated with significant placebo-adjusted reductions from baseline in blood pressure in these hyperlipidemic hypertensive or normotensive subjects.

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