Abstract
Over the past several years, the overall prevalence and incidence of cardiovascular diseases (CVD) including coronary artery diseases (CAD) have declined in the United States (US) and in many developed countries. However, among South Asian in general and South Asian immigrants (SAIs) in particular, a disturbing trend toward high rates of CAD has been noted. This trend is associated with a high prevalence of conventional risk factors and metabolic syndrome in this population, yet these conventional risk factors may not account for the greater CAD risk among SAIs. A search for additional markers is warranted, to enable early detection and prevention of CAD in this high risk group. High density lipoprotein (HDL) is one of the predictor of CAD and is considered to be cardio-protective. However, some of the recent studies have shown that HDL is not only ineffective as an antioxidant but, paradoxically, appears to be pro-oxidant, and has been found to be associated with CAD. Such HDL is called dysfunctional HDL. We present here an overview CAD and CAD risk factors in general and dyslipidemias in particular in SAIs. In addition, the evolving theories on dysfunctional HDL and its impact on CAD are also briefly presented.
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