Association and Interaction Between Dietary Patterns and Gene Polymorphisms in Liangshan Residents with Hyperuricemia

Abstract

\n Background: Hyperuricemia (HUA) is caused by genetic and dietary factors. However, little is known about the ways in which diet and gene interactions influence HUA or the role of dietary patterns in HUA. Objectives: We aimed to explore the association between dietary patterns and HUA as well as dietary patterns and gene interactions in HUA among the Yi ethnic group of China. Methods: Food consumption information was collected using a semi-quantitative food frequency questionnaire. Vein blood samples were collected after overnight fasting from all participants and DNA was extracted from peripheral blood leukocytes. Dietary patterns were derived using factor analysis.Results: The study included 2646 participants aged 18–88 years with a HUA prevalence of 26.8%. Three major dietary patterns were identified and shown to be associated with HUA prevalence, with meat-based diets having a higher association with HUA than plant-based or regionally specific diets. The frequency of the T allele at ABCG2 rs2231142 and SLC2A9 rs11722228 loci was higher in HUA than in non-HUA populations. An additive interaction between a meat-based diet and the rs2231142 locus was associated with the risk of HUA. The relative excess risks of interaction (RERI), attributable proportion of interaction (AP), and synergy index (S) were 0.482 (95% CI 29 = 0.012,0.976),0.203 (95% CI = 0.033,0.374), 1.544 (95% CI = 1.012,2.355), respectively. Conclusions: The meat-based dietary pattern was associated with an increased risk of HUA. There was an additive interaction between a meat-based dietary pattern and the ABCG2 rs2231142 locus in study participants. Individuals with the rs2231142 T allele had a higher frequency of HUA than those with the rs2231142 GG allele. Individuals with the rs2231142 T allele but a healthy dietary pattern could have a reduced HUA risk.