Genomics Inform.
2012 Jun;10(2):88-98. 10.5808/GI.2012.10.2.88.
Interaction Effects of Lipoprotein Lipase Polymorphisms with Lifestyle on Lipid Levels in a Korean Population: A Cross-sectional Study
- Affiliations
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- 1Department of Biomedical Science, College of Life Science, CHA University, Seongnam 463-836, Korea. kbkwack@cha.ac.kr
- 2Department of Family Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam 463-712, Korea.
- 3Department of Foods and Nutrition, College of Natural Sciences, Kookmin University, Seoul 136-702, Korea.
- 4Department of Preventive Medicine, Ajou University School of Medicine, Suwon 443-749, Korea.
- 5Department of Physiology, Hanyang University College of Medicine, Seoul 133-791, Korea.
- 6Center for Genome Science, National Institute of Health, Osong 363-951, Korea.
- 7National Hypertension Center, Yonsei University Health System, Seoul 120-752, Korea.
- 8Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan 425-707, Korea.
- KMID: 2166490
- DOI: http://doi.org/10.5808/GI.2012.10.2.88
Abstract
- Lipoprotein lipase (LPL) plays an essential role in the regulation of high-density lipoprotein cholesterol (HDLC) and triglyceride levels, which have been closely associated with cardiovascular diseases. Genetic studies in European have shown that LPL single-nucleotide polymorphisms (SNPs) are strongly associated with lipid levels. However, studies about the influence of interactions between LPL SNPs and lifestyle factors have not been sufficiently performed. Here, we examine if LPL polymorphisms, as well as their interaction with lifestyle factors, influence lipid concentrations in a Korean population. A two-stage association study was performed using genotype data for SNPs on the LPL gene, including the 3' flanking region from 7,536 (stage 1) and 3,703 (stage 2) individuals. The association study showed that 15 SNPs and 4 haplotypes were strongly associated with HDLC (lowest p = 2.86 x 10(-22)) and triglyceride levels (lowest p = 3.0 x 10(-15)). Interactions between LPL polymorphisms and lifestyle factors (lowest p = 9.6 x 10(-4)) were also observed on lipid concentrations. These findings suggest that there are interaction effects of LPL polymorphisms with lifestyle variables, including energy intake, fat intake, smoking, and alcohol consumption, as well as effects of LPL polymorphisms themselves, on lipid concentrations in a Korean population.
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