Abstract
The associations between selenium and liver stiffness and steatosis remain uncertain. This study aimed to explore the clinical relevance of selenium with liver stiffness and steatosis in adults from the 2017–2018 National Health and Nutrition Examination Survey. Subjects with excessive alcohol consumption and hepatitis B or C infection were excluded. Liver stiffness and steatosis were detected by transient elastography. Dietary selenium intakes and blood selenium concentrations were included as exposures. In multivariate analysis without adjustment for obesity, higher dietary selenium intakes (tertile 3 vs. tertile 1) were positively associated with liver stiffness in females (odds ratio (95% confidence interval): 2.64 (1.88–3.70)), and were positively associated with liver steatosis overall (1.54 (1.20–1.97)) and also in males (1.55 (1.06–2.26)). In multivariate analysis without adjustment for obesity, higher blood selenium concentrations (tertile 3 vs. tertile 1) were positively associated with liver steatosis overall (1.33 (1.02–1.76)) and also in males (1.56 (1.13–2.16)). After further adjustment for obesity, the abovementioned associations remain significant between dietary selenium intakes and liver stiffness in females (2.29 (1.69–3.12)) and liver steatosis overall (1.37 (1.01–1.86)), and between blood selenium concentrations and liver steatosis in males (1.67 (1.25–2.21)). Dose–response analysis showed that the abovementioned associations were linear. However, dietary selenium intakes meeting the recommended daily allowance (≥ 55 µg/day) were not associated with liver stiffness (0.99 (0.62–1.55)) and steatosis (1.01 (0.69–1.49)). In conclusion, higher dietary selenium intakes and blood selenium concentrations were positively associated with liver stiffness and steatosis, and obesity may partially account for the observed associations.
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Data Availability
All data are freely available in the NHANES: https://www.cdc.gov/nchs/nhanes/.
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Xiaohui Liu: conceptualization, data curation, analysis and writing; Hong Shen, Mingfeng Chen: writing; Jun Shao: review and supervision.
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Liu, X., Shen, H., Chen, M. et al. Clinical Relevance of Selenium with Liver Stiffness and Steatosis Detected by Transient Elastography in Adults. Biol Trace Elem Res 200, 3041–3049 (2022). https://doi.org/10.1007/s12011-021-02912-x
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DOI: https://doi.org/10.1007/s12011-021-02912-x