Predictive Value of Thyroid Hormones for Incident Hyperuricemia in Euthyroid Subjects: The Tianjin Chronic Low-Grade Systemic Inflammation and Health Cohort Study |
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| Institution: | 1. Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China;2. Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China;3. Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China;4. Health Management Centre, Tianjin Medical University General Hospital, Tianjin, China;5. College of Pharmacy, Tianjin Medical University, Tianjin, People’s Republic of China;6. Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China;7. Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China |
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| Abstract: | ObjectiveThyroid hormones (THs) play an important role in both serum uric acid (SUA) excretion and purine nucleotide metabolism. Past research mainly focused on the relationships between thyroid dysfunction and hyperuricemia. Although most subjects at risk for hyperuricemia are euthyroid, few studies have investigated the predictive values of THs on incident hyperuricemia in euthyroid adults. This study aimed to examine how free triiodothyronine, thyroxine, and thyroid-stimulating hormone are related to incident hyperuricemia in euthyroid subjects.MethodsParticipants without baseline hyperuricemia were recruited from Tianjin Chronic Low-grade Systemic Inflammation and Health Cohort Study and followed up for ～6 years. Thyroid function was determined by chemiluminescence immunoassay methods. Hyperuricemia was defined as SUA ≥416.5 μmol/L for males and ≥357.0 μmol/L for females. Thyroid function and SUA were assessed yearly during follow-up. Adjusted Cox proportional hazards regression models were used to assess the relationship between thyroid function and hyperuricemia.ResultsThe incidence rates of hyperuricemia were 109 and 50 per 1000 person-years in males and females, respectively. In males, compared with the lowest quartile, the multivariable-adjusted hazards ratios for hyperuricemia in the highest quartiles of triiodothyronine, thyroxine, and thyroid-stimulating hormone were 0.57 (0.50-0.66), 0.63 (0.54-0.73), and 1.03 (0.90-1.19) (P for trend < .0001, < .0001, and .51), respectively. However, no statistically significant correlations between thyroid function and incident hyperuricemia in females were found.ConclusionThis cohort study is the first to demonstrate that higher THs are related to lower risk of incident hyperuricemia in a male population with euthyroid status. |
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