Abstract
Purpose
Graves’ orbitopathy (GO) is the main extrathyroidal manifestation of Graves’ disease. However, limited studies have investigated the actual efficacy of selenium in GO therapy. This longitudinal study explored the effect of selenium on QOL and prognosis of patients with mild-to-moderate GO.
Methods
We conducted a 5-year prospective controlled cohort clinical trial to determine the effect of selenium on 74 patients with mild-to-moderate GO. Patients received selenium yeast or placebo orally for 6 months and were followed up at 6 months and at 5 years by biochemical examination, ophthalmologist evaluation and QOL questionnaire to assess oculopathy and QOL.
Results
(1) During a follow-up period of 3–6 months, in the selenium group, the symptoms of tearing, grittiness and conjunctival congestion improved (P < 0.01); clinical activity scores and total GO-QOL scores increased relative to baseline (P < 0.01); TRAb was decreased at the 6-month evaluation (P = 0.003); and patients treated with selenium had a higher rate of improvement and a lower rate of worsening than patients treated with placebo (P < 0.05). (2) Exploratory evaluations at 6 months after drug withdrawal confirmed the earlier results; further changes included alleviation of blurred vision and double vision symptoms in the selenium group (P < 0.01). (3) At the 5-year follow-up, compared with baseline, proptosis, clinical activity scores, TRAb level and total GO-QOL scores in both the selenium and placebo groups were significantly improved (P < 0.01).
Conclusion
Six months of selenium supplementation may effectively change the early course of mild-to-moderate GO, but this regimen makes no difference in long-term outcomes.
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Data availability
All datasets generated during and analyzed during the current study are not publicly available but are available from the corresponding author on reasonable request.
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Acknowledgements
We would like to thank all the participants of this study.
Funding
This work was supported by the National Natural Science Foundation of China (81570709, 82270833, 82300886). the Science Research Fund Project of Education Department of Liaoning Province (General Project) (LJKZ0742), and the Science Research Fund Project of Shenyang Science and Technology Bureau [2011] (21, F11-262-9-23).
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Y.S.L. and Z.Y.S. conceived of and designed the study; C.Y.W., J.Q., S.S.L. and S.P. organized the study and conducted the statistical analysis. Second authors J.Q., S.S.L., and S.P. contributed equally. All authors contributed to the acquisition, analysis, or interpretation of data. Y.S.L., Z.Y.S. and C.Y.W. drafted the manuscript. All authors revised the report and approved the final version before submission.
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This study was approved by the Ethics Committee of China Medical University and registered in the China Clinical Trial Registry (Registration Number: CHICTR-IOR-15005855). All the participants signed informed consent forms before enrollment. The study will be implemented and reported in line with the STROBE statement.
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Wang, C., Qiao, J., Liu, S. et al. Selenium in the treatment of mild-to-moderate Graves’ orbitopathy: a 5-year prospective controlled cohort study. Endocrine (2024). https://doi.org/10.1007/s12020-023-03672-5
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DOI: https://doi.org/10.1007/s12020-023-03672-5