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The current state of niacin in cardiovascular disease prevention: a systematic review and meta-regression.

Journal of the American College of Cardiology (2012-12-26)
Paul M Lavigne, Richard H Karas
ABSTRACT

This study sought to assess the efficacy of niacin for reducing cardiovascular disease (CVD) events, as indicated by the aggregate body of clinical trial evidence including data from the recently published AIM-HIGH (Atherothrombosis Intervention in Metabolic Syndrome with Low HDL/High Triglycerides: Impact on Global Health Outcomes) trial. Previously available randomized clinical trial data assessing the clinical efficacy of niacin has been challenged by results from AIM-HIGH, which failed to demonstrate a reduction in CVD event incidence in patients with established CVD treated with niacin as an adjunct to intensive simvastatin therapy. Clinical trials of niacin, alone or combined with other lipid-altering therapy, were identified via MEDLINE. Odds ratios (ORs) for CVD endpoints were calculated with a random-effects meta-analyses. Meta-regression modeled the relationship of differences in on-treatment high-density lipoprotein cholesterol with the magnitude of effect of niacin on CVD events. Eleven eligible trials including 9,959 subjects were identified. Niacin use was associated with a significant reduction in the composite endpoints of any CVD event (OR: 0.66; 95% confidence interval [CI]: 0.49 to 0.89; p = 0.007) and major coronary heart disease event (OR: 0.75; 95% CI: 0.59 to 0.96; p = 0.02). No significant association was observed between niacin therapy and stroke incidence (OR: 0.88; 95% CI: 0.5 to 1.54; p = 0.65). The magnitude of on-treatment high-density lipoprotein cholesterol difference between treatment arms was not significantly associated with the magnitude of the effect of niacin on outcomes. The consensus perspective derived from available clinical data supports that niacin reduces CVD events and, further, that this may occur through a mechanism not reflected by changes in high-density lipoprotein cholesterol concentration.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Nicotinic acid, ≥98%
Sigma-Aldrich
Nicotinic acid, meets USP testing specifications
Sigma-Aldrich
Nicotinic acid, BioReagent, suitable for cell culture, suitable for insect cell culture, suitable for plant cell culture, ≥98%
Sigma-Aldrich
Nicotinic acid, ≥99.5% (HPLC)
Supelco
Nicotinic acid, analytical standard
Supelco
Niacin (Nicotinic Acid), Pharmaceutical Secondary Standard; Certified Reference Material