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Low high-density lipoprotein cholesterol: current status and future strategies for management

Authors Vibhuti Singh, Rakesh Sharma, Ajoy Kumar, et al

Published 29 October 2010 Volume 2010:6 Pages 979—996


Review by Single-blind

Peer reviewer comments 2

Vibhuti Singh1, Rakesh Sharma2, Ajoy Kumar3, Prakash Deedwania4
1University of South Florida College of Medicine, and Suncoast Cardiovascular Center, St. Petersburg, Florida, USA; 2Heart and Vascular Institute of South Arkansas, University of Arkansas for Medical Science, Little Rock, Arkansas, USA; 3Family Practice Training Program, Bayfront Medical Center, St. Petersburg, Florida, USA; 4Cardiology Division, VACCHCS Fresno, CA, UCSF School of Medicine, San Francisco, CA, USA

Abstract: Atherosclerotic cardiovascular disease is the foremost cause of death and disability in the Western world, and it is rapidly becoming so in the developing nations. Even though the use of statin therapy aiming at the low-density lipoprotein cholesterol (LDL) has significantly reduced cardiovascular events and mortality, substantial residual cardiac events still occur in those being treated to the currently recommended targets. In fact, residual risk is also seen in those who are treated “aggressively” such as the “high risk” patients so defined by the National Cholesterol Education Program (NCEP) Adult Treatment Panel III (ATP III). Consequently, one must look for the predictors of risk beyond LDL reduction. High-density lipoprotein cholesterol (HDL) is the next frontier. The protectiveness of elevated HDL against atherosclerosis is well described in the literature. HDL subdues several atherogenic processes, such as oxidation, inflammation, cell proliferation and thrombosis. It also helps mobilize the excess LDL via reverse cholesterol transport. Low levels of HDL have been shown to be independent predictors of risk. Thus, therapies to raise the HDL hold promise for additional cardiac risk reduction. In this regard, several randomized trials have recently tested this hypothesis, especially in patients at high risk. In addition to the use of aggressive lifestyle modification, clinical outcomes have been measured following augmentation of HDL levels with various treatment modalities, including aggressive statin therapy, combination therapy with fibrates and niacin, and direct HDL-raising drug treatments. These data for low HDL as an independent risk factor and as the new treatment target are reviewed in this paper.

Keywords: HDL, hypoalphalipoproteinemia, low HDL cholesterol, HDL, atherosclerosis risk reduction, statins, CETP inhibitors, niacin, dyslipidemia, reverse cholesterol transport, liver X-receptor agonists, PPAR-alpha agonists, Cordaptive™, D-4F agonists, farnesoid X-receptor antagonists, apolipoprotein-A agonists, fibrates

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