Optimal Therapy of Low Levels of High Density Lipoprotein-Cholesterol

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Abstract
Plasma levels of high-density lipoprotein-cholesterol (HDL-C) are a powerful independent cardiovascular risk factor, bearing an inverse relationship with atherosclerotic cardiovascular disease (with risk rising sharply when levels are 1.16 mmol/L may be considered optimal and between 1 and 1.16 mmol/L as desirable. Fibric acid derivatives, nicotinic acid, HMG-CoA reductase inhibitors, estrogens, and ethanol (not recommended as therapy) increase plasma HDL-C levels. Nicotinic acid is the most potent agent and recent reports indicate that, in contrast to gemfibrozil, it selectively increases antiatherogenic HDL subfraction, lipoprotein (Lp) AI (without apolipoprotein AII), in patients with low plasma HDL-C levels. An extended-release formulation, dministered once daily, has improved the tolerability of nicotinic acid. Recent evidence also indicates that nicotinic acid may effectively correct dyslipidemia in patients with diabetes mellitus without significantly compromising glycemic control. Fibric acid derivatives and estrogen raise plasma HDL-C levels by different mechanisms of action, and these agents may be used with nicotinic acid. Combination therapy (especially HMG-CoA reductase inhibitor and nicotinic acid) should be considered in patients with atherosclerotic cardiovascular disease and low plasma HDL-C levels.

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