Associations between thyroid hormones and serum metabolite profiles in an euthyroid population

作者：Jourdan Carolin; Linseisen Jakob^*; Meisinger Christa; Petersen Ann Kristin; Gieger Christian; Rawal Rajesh; Illig Thomas; Heier Margit; Peters Annette; Wallaschofski Henri; Nauck Matthias; Kastenmueller Gabi; Suhre Karsten; Prehn Cornelia; Adamski Jerzy; Koenig Wolfgang; Roden Michael; Wichmann H Erich; Voelzke Henry

来源：Metabolomics, 2014, 10(1): 152-164.

DOI：10.1007/s11306-013-0563-4

• Targeted metabolomics
• Serum metabolites
• Free thyroxine
• Thyrotropin
• Thyroid hormones
• Epidemiology

The aim was to characterise associations between circulating thyroid hormones-free thyroxine (FT4) and thyrotropin (TSH)-and the metabolite profiles in serum samples from participants of the German population-based KORA F4 study. Analyses were based on the metabolite profile of 1463 euthyroid subjects. In serum samples, obtained after overnight fasting (a parts per thousand yen8), 151 different metabolites were quantified in a targeted approach including amino acids, acylcarnitines (ACs), and phosphatidylcholines (PCs). Associations between metabolites and thyroid hormone concentrations were analysed using adjusted linear regression models. To draw conclusions on thyroid hormone related pathways, intra-class metabolite ratios were additionally explored. We discovered 154 significant associations (Bonferroni p %26lt; 1.75 x 10(-04)) between FT4 and various metabolites and metabolite ratios belonging to AC and PC groups. Significant associations with TSH were lacking. High FT4 levels were associated with increased concentrations of many ACs and various sums of ACs of different chain length, and the ratio of C2 by C0. The inverse associations observed between FT4 and many serum PCs reflected the general decrease in PC concentrations. Similar results were found in subgroup analyses, e.g., in weight-stable subjects or in obese subjects. Further, results were independent of different parameters for liver or kidney function, or inflammation, which supports the notion of an independent FT4 effect. In fasting euthyroid adults, higher serum FT4 levels are associated with increased serum AC concentrations and an increased ratio of C2 by C0 which is indicative of an overall enhanced fatty acyl mitochondrial transport and beta-oxidation of fatty acids.

• 出版日期2014-2
• 单位河北医科大学