Published in:
01-12-2016 | Cardiac
High levels of thyroid-stimulating hormone are associated with aortic wall thickness in the general population
Authors:
Till Ittermann, Roberto Lorbeer, Marcus Dörr, Tobias Schneider, Alexander Quadrat, Lydia Heßelbarth, Michael Wenzel, Ina Lehmphul, Josef Köhrle, Birger Mensel, Henry Völzke
Published in:
European Radiology
|
Issue 12/2016
Login to get access
Abstract
Objectives
Our aim was to investigate the association of thyroid function defined by serum concentrations of thyroid-stimulating hormone (TSH) with thoracic aortic wall thickness (AWT) as a marker of atherosclerotic processes.
Methods
We pooled data of 2,679 individuals from two independent population-based surveys of the Study of Health in Pomerania. Aortic diameter and AWT measurements were performed on a 1.5-T MRI scanner at the concentration of the right pulmonary artery displaying the ascending and the descending aorta.
Results
TSH, treated as continuous variable, was significantly associated with descending AWT (β = 0.11; 95 % confidence interval (CI) 0.02–0.21), while the association with ascending AWT was not statistically significant (β = 0.20; 95 % CI −0.01–0.21). High TSH (>3.29 mIU/L) was significantly associated with ascending (β = 0.12; 95 % CI 0.02–0.23) but not with descending AWT (β = 0.06; 95 % CI −0.04–0.16). There was no consistent association between TSH and aortic diameters.
Conclusions
Our study demonstrated that AWT values increase with increasing serum TSH concentrations. Thus, a hypothyroid state may be indicative for aortic atherosclerosis. These results fit very well to the findings of previous studies pointing towards increased atherosclerotic risk in the hypothyroid state.
Key Points
• Serum TSH concentrations are positively associated with aortic wall thickness.
• Serum TSH concentrations are not associated with the aortic diameters.
• Serum 3,5-diiodothyronine concentrations may be positively associated with aortic wall thickness.