High fat diet modifies the association of lipoprotein lipase gene polymorphism with high density lipoprotein cholesterol in an Asian Indian population

Ayyappa, K A and Shatwan, I and Bodhini, D and Bramwell, L R and Ramya, K and Sudha, V and Anjana, R M and Lovegrove, J A and Mohan, V and Radha, V and Vimaleswaran, K S (2017) High fat diet modifies the association of lipoprotein lipase gene polymorphism with high density lipoprotein cholesterol in an Asian Indian population. Nutrition & Metabolism, 14 (1). ISSN 1743-7075



BACKGROUND: Single nucleotide polymorphisms (SNPs) in lipoprotein lipase gene (LPL) have been shown to influence metabolism related to lipid phenotypes. Dietary factors have been shown to modify the association between LPL SNPs and lipids; however, to date, there are no studies in South Asians. Hence, we tested for the association of four common LPL SNPs with plasma lipids and examined the interactions between the SNPs and dietary factors on lipids in 1,845 Asian Indians. METHODS: The analysis was performed in 788 Type 2 diabetes cases and 1,057 controls randomly chosen from the cross-sectional Chennai Urban Rural Epidemiological Study. Serum triacylglycerol (TAG), serum total cholesterol, and high-density lipoprotein cholesterol (HDL-C) were measured using a Hitachi-912 autoanalyzer (Roche Diagnostics GmbH, Mannheim, Germany). Dietary intake was assessed using a semi-quantitative food frequency questionnaire. The SNPs (rs1121923, rs328, rs4922115 and rs285) were genotyped by polymerase chain reaction followed by restriction enzyme digestion and 20% of samples were sequenced to validate the genotypes obtained. Statistical Package for Social Sciences for Windows version 22.0 (SPSS, Chicago, IL) was used for statistical analysis. RESULTS: After correction for multiple testing and adjusting for potential confounders, SNPs rs328 and rs285 showed association with HDL-C (P = 0.0004) and serum TAG (P = 1×10-5), respectively. The interaction between SNP rs1121923 and fat intake (energy %) on HDL-C (P = 0.003) was also significant, where, among those who consumed a high fat diet (28.4 ± 2.5%), the T allele carriers (TT + XT) had significantly higher HDL-C concentrations (P = 0.0002) and 30% reduced risk of low HDL-C levels compared to the CC homozygotes. None of the interactions on other lipid traits were statistically significant. CONCLUSION: Our findings suggest that individuals carrying T allele of the SNP rs1121923 have increased HDL-C levels when consuming a high fat diet compared to CC homozygotes. Our finding warrants confirmation in prospective studies and randomized controlled trials.

Item Type:Article
Official URL/DOI:http://dx.doi.org/10.1186/s12986-016-0155-1
Uncontrolled Keywords:Asian Indians; CURES; Dietary intake; HDL-C; LPL; Lipids; Lipoprotein lipase; Triacylglycerol
Subjects:Genetics and Diabetes
Nutrition and Diabetes
Divisions:Department of Nutrition and Dietitics
Department of Diabetology
Department of Advanced Research Biochemistry
ID Code:1060
Deposited By:surendar radha
Deposited On:06 Sep 2017 13:58
Last Modified:06 Sep 2017 13:58

Repository Staff Only: item control page