Cited by 11Adrenal Hormones and DisordersThyroid Disorders and TreatmentsHormonal Regulation and Hypertension

Effect of steroid replacement on thyroid function and thyroid autoimmunity in Addison’s disease with primary hypothyroidism

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Sahoo, JayaPrakash, Selviambigapathy, Jayakumar, Kamalanathan, Sadishkumar, Nagarajan, K, Vivekanandan, Muthupillai·2016·Indian Journal of Endocrinology and Metabolism

Abstract

BACKGROUND: Steroid replacement without thyroxine supplementation normalizes thyroid function test (TFT) in some but not all Addison's disease patients with primary hypothyroidism. Both autoimmune and nonautoimmune mechanisms contribute to this improvement in TFT. However, the documentation of the change in thyroid autoimmunity after cortisol replacement is very limited in the literature. The aim of this study was to determine the effect of steroid replacement on TFT and anti-thyroid peroxidase antibody (anti-TPO-Ab) titer in Addison's disease with primary hypothyroidism. MATERIALS AND METHODS: This observational study was conducted in a tertiary care center in South India. Six Addison's disease patients with primary hypothyroidism, who were only on steroid replacement, were included in the study. Low serum cortisol (<83 nmol/L) with high plasma adrenocorticotropic hormone (>22 pmol/L) and/or hyperpigmentation of skin/mucous membranes was considered as the diagnostic criteria for Addison's disease. Primary hypothyroidism (both overt and subclinical) was defined as high thyroid stimulating hormone (TSH) with/without low free thyroxine (fT4). TFT and anti-TPO-Ab were performed before and after steroid replacement in all of them. RESULTS: Poststeroid replacement, there was a normalization of TSH in all but one subjects. In overt hypothyroidism patients, fT4 also normalized. The improvement in TFT was not associated with decreasing titer of the anti-TPO-Ab in all six patients. However, there was a significant difference in TSH after steroid replacement compared to the baseline status. CONCLUSIONS: The concept of normalization of primary hypothyroidism with cortisol replacement in patients with Addison's disease should be recognized to avoid iatrogenic thyrotoxicosis caused by thyroxine replacement. Both autoimmune and nonautoimmune mechanisms contribute to these alterations.

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Authors
Sahoo, J., Selviambigapathy, J., Kamalanathan, S., Nagarajan, K., & Vivekanandan, M.
Affiliations
Jawaharlal Institute of Post Graduate Medical Education and Research (IN)
Venue
Indian Journal of Endocrinology and Metabolism
Published
2016
Volume
20
Issue
2
Pages
162
ISSN
2230-8210 (ISSN-L)
OpenAlex
W2275081587
Cited by
11
References
19
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2019: 3 · 2018: 1
FWCI
1.34
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • Indian Journal of Endocrinology and Metabolism (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
Keywords
Addison's disease, primary hypothyroidism, cortisol replacement, thyroid function tests, thyroid autoimmunity, thyroid peroxidase antibodies, thyroid-stimulating hormone, free thyroxine, ACTH

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