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Changes in brain structure in subjects with resistance to thyroid hormone due to THRB mutations

Published version
Peer-reviewed

Repository DOI


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Authors

Rogge, Berenike 
Heldmann, Marcus 
Chatterjee, Krishna 
Moran, Carla 
Göttlich, Martin 

Abstract

Background: Being critical for brain development and neurocognitive function thyroid hormones may have an effect on behaviour and brain structure. Our exploratory study aimed to delineate the influence of mutations in the thyroid hormone receptor (TR) ß gene on brain structure. Methods: High-resolution 3D T1-weighted images were acquired in 21 patients with a resistance to thyroid hormone ß (RTHß) in comparison to 21 healthy matched-controls. Changes in grey and white matter, as well as cortical thickness were evaluated using voxel-based morphometry (VBM) and diffusion tensor imaging (DTI). Results: RTHß patients showed elevated circulating fT4 & fT3 with normal TSH concentrations, whereas controls showed normal thyroid hormone levels. RTHß patients revealed significantly higher scores in a self-rating questionnaire for attention deficit hyperactivity disorder (ADHD). Imaging revealed alterations of the corticospinal tract, increased cortical thickness in bilateral superior parietal cortex and decreased grey matter volume in bilateral inferior temporal cortex and thalamus. Conclusion: RTHb patients exhibited structural changes in multiple brain areas. Whether these structural changes are causally linked to the abnormal behavioral profile of RTHß which is similar to ADHD, remains to be determined.

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Acknowledgements: We thank the patients and their relatives for their kindness to participate and their willingness to travel and Ms Greta Lyons, Research Nurse, University of Cambridge for her excellent support.


Funder: Universität zu Lübeck (3165)

Keywords

Diffusion tensor imaging, Resistance to thyroid hormone, Thyroid hormone receptor beta, voxel based morphometry

Journal Title

Thyroid Research

Conference Name

Journal ISSN

1756-6614

Volume Title

16

Publisher

BioMed Central