Options for therapeutic intervention: how effective are the different agents?
Heart Research Institute, 145 Missenden Road, Camperdown, Sydney 2050, Australia
Corresponding author. Tel: +61 2 95503560; fax: +61 2 95503302. E-mail address: p.barter{at}hri.org.au
‘Atherogenic dyslipidaemia’ and the ‘lipid triad’ are collective terms for the low HDL-cholesterol, elevated triglycerides, and small, dense LDL that is often found in insulin-resistant patients with abdominal obesity, the metabolic syndrome, or type 2 diabetes. This dyslipidaemia phenotype is believed to underlie a substantial burden of excess cardiovascular risk. Although statins provide effective control of LDL-cholesterol, their effects on the lipid triad are relatively modest and combination therapies will be required to normalize the lipid profiles of these patients. Increasing HDL-cholesterol, in particular, exerts a range of anti-atherogenic effects within the evolving atherosclerotic plaque. Fibrates and nicotinic acid (niacin) each increase HDL-cholesterol, with nicotinic acid being the more effective of the two. Studies with Niaspan®, a prolonged-release formulation of nicotinic acid with equivalent efficacy but superior tolerability compared with immediate-release nicotinic acid, shows that this agent preferentially increases levels of larger, more atheroprotective, ApoAI-containing HDLs. Combinations of nicotinic acid with a statin appears to provide effective control of LDL-cholesterol while maximizing the anti-atherogenic potential of HDL-cholesterol.
Key Words: HDL-cholesterol • Atherosclerosis • Dyslipidaemia • Nicotinic acid • HMG CoA reductase inhibitors • Fibrates