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September 2019

Horm Metab Res. 1995 Jul; 27(7): 326-31.

Physico-chemical properties of low density lipoproteins in normolipidemic Asian Indian men.

Abate N, Garg A, Enas EA.

Center for Human Nutrition, University of Texas Southwestern Medical Center at Dallas, USA.

The present study investigated whether a predisposition to high frequency of small, dense low density lipoproteins (LDL) could be an additional coronary risk factor in migrant Asian Indians. Ninety-three normolipidemic (fasting plasma cholesterol levels < or = 240 mg/dl and triglyceride levels < or = 250 mg/dl) adult Asian Indian men residing in the U.S. were compared to a group of 59 Caucasian men for the prevalence of LDL electrophoretic patterns A and B (size of major LDL peak > or = 255 A for LDL pattern A and < 255 A for LDL pattern B). Compared to the Caucasians, the Asian Indians had larger LDL size (mean +/- SD; 260.1 +/- 12.8 A vs 267.7 +/- 11.4 A, respectively; p = 0.0002), an increased frequency of LDL pattern A (59% vs 85%, respectively) and a lower frequency of LDL pattern B (41% vs 15%, respectively) (p = 0.0005). The difference in LDL size in the two study groups persisted after adjusting for the various confounding variables, such as age, plasma triglycerides, high-density lipoprotein cholesterol and dietary habits. We conclude that compared to Caucasians, Asian Indian men have larger LDL particles and a lower prevalence of LDL phenotype B in the presence of normolipidemia. Therefore, we exclude a genetic predisposition to atherogenic LDL phenotype as a factor contributing to the high incidence of coronary heart disease in migrant Asian Indians.

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