Cited by 86Thyroid Disorders and TreatmentsIon channel regulation and functionCardiac electrophysiology and arrhythmias

Novel etiopathophysiological aspects of thyrotoxic periodic paralysis

Maciel, Rui M. B., Lindsey, Susan C., Dias da Silva, Magnus R.·2011·Nature Reviews Endocrinology

Abstract

Thyrotoxicosis can lead to thyrotoxic periodic paralysis (TPP), an endocrine channelopathy, and is the most common cause of acquired periodic paralysis. Typically, paralytic attacks cease when hyperthyroidism is abolished, and recur if hyperthyroidism returns. TPP is often underdiagnosed, as it has diverse periodicity, duration and intensity. The age at which patients develop TPP closely follows the age at which thyrotoxicosis occurs. All ethnicities can be affected, but TPP is most prevalent in people of Asian and, secondly, Latin American descent. TPP is characterized by hypokalemia, suppressed TSH levels and increased levels of thyroid hormones. Nonselective β adrenergic blockers, such as propranolol, are an efficient adjuvant to antithyroid drugs to prevent paralysis; however, an early and definitive treatment should always be pursued. Evidence indicates that TPP results from the combination of genetic susceptibility, thyrotoxicosis and environmental factors (such as a high-carbohydrate diet). We believe that excess T(3) modifies the insulin sensitivity of skeletal muscle and pancreatic β cells and thus alters potassium homeostasis, but only leads to a depolarization-induced acute loss of muscle excitability in patients with inherited ion channel mutations. An integrated etiopathophysiological model is proposed based on molecular findings and knowledge gained from long-term follow-up of patients with TPP.

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Crossref · 10.1038/nrendo.2011.58

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Authors
Maciel, R. M. B., Lindsey, S. C., & Dias da Silva, M. R.
Affiliations
Universidade Federal de São Paulo (BR)
Venue
Nature Reviews Endocrinology
Published
2011-05-10
Volume
7
Issue
11
Pages
657-667
ISSN
  • 1759-5029 (ISSN-L)
  • 1759-5037
OpenAlex
W1986025238
Cited by
86
References
130
Citations by year
2026: 6 · 2025: 6 · 2024: 4 · 2023: 5 · 2022: 8 · 2021: 6 · 2020: 9 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 5 · 2015: 6 · 2014: 7 · 2013: 6 · 2012: 8
FWCI
0.98
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Reviews Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • UNIFESP Institutional Repository (Universidade Federal de São Paulo) (submittedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
Keywords
thyrotoxic periodic paralysis, thyrotoxicosis, hyperthyroidism, hypokalemia, potassium homeostasis, skeletal muscle excitability, beta-cell function, ion channel mutations, genetic susceptibility, high-carbohydrate diet, propranolol, antithyroid drugs
MeSH terms
Animals, Humans, Hypokalemia, Thyrotoxicosis, Hypokalemic Periodic Paralysis

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