Association Between Selenium Level in Blood and Glycolipid Metabolism in Residents of Enshi Prefecture, China

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Association Between Selenium Level in Blood and Glycolipid Metabolism in Residents of Enshi Prefecture, China Haiqin Fang 1 & Xiaohong He 2 & Yingyu Wu 3 & Siqiang Chen 2 & Mingyuan Zhang 1,4 & Feng Pan 1 & Jiao Huang 5 & Aidong Liu 1 Received: 18 June 2020 / Accepted: 1 September 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020

Abstract The present study aimed to detect selenium (Se) levels in the blood of Enshi Prefecture residents in China and investigate the relationship between blood Se levels and glucose or lipid metabolism disorder. A cross-sectional study was conducted, and 1876 subjects were selected through cluster random sampling from Enshi Prefecture using a questionnaire survey, physical examinations, and biochemical blood tests. The mean blood Se level in the overall population was 0.128 ± 0.178 μg/mL. Se exhibits a “U”-shaped curve on the serum fasting plasma glucose (FPG) of the total samples, that is, when the blood Se is more than 0.131 μg/mL or less than 0.062 μg/mL, the FPG increases significantly. A significant negative correlation was demonstrated between the FPG levels of the 4–17-year-old age group and different blood Se levels (P < 0.001). No significant correlation was demonstrated between the serum triglyceride (TG) and blood Se levels. However, a positive correlation was demonstrated between blood Se and serum total cholesterol (TC) levels and the incidence of high cholesterol in the total population (P < 0.001). The odds ratio and related 95% confidence interval for the incidence of high cholesterol between the highest (≥ 0.133 μg/ mL) and lowest blood Se (< 0.064 μg/mL) levels was 2.64 and 1.48–4.79, respectively. The results of this study are very important for the safety scope and risk-benefit assessment of Se in the human; however, further investigation with a larger sample size is required. Keywords Selenium (Se) . Glycolipid metabolism . Fasting plasma glucose (FPG) . Triglyceride (TG) . Total cholesterol (TC)

Introduction Haiqin Fang, Xiaohong He and Yingyu Wu contributed equally to this work. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12011-020-02372-9) contains supplementary material, which is available to authorized users. * Aidong Liu [email protected] 1

China National Center for Food Safety Risk Assessment, Beijing 100021, China

2

Enshi Center for Disease Control and Prevention, Enshi 445000, Hubei, China

3

College of Agricultural and Environmental Sciences, United States, University of California, Davis, CA, USA

4

School of Public Health, Capital Medical University, Beijing, China

5

School of Public Health, Huazhong, Huazhong University of Science and Technology, Wuhan, China

Se is one of the most essential trace elements for human health. As a redox center and part of the family of Se-dependent glutathione peroxidases, Se plays an important role in transforming hydrogen peroxide, lipids, and phospholipid hydroperoxides into harmless products [1–3]. It is a basic component of seleno