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Related Experiment Videos

The TSH receptor and thyroid diseases

R Paschke1, J Van Sande, J Parma

  • 1Institute of Interdisciplinary Research (IRI), School of Medicine, Free University of Brussels, Belgium.

Bailliere'S Clinical Endocrinology and Metabolism
|January 1, 1996
PubMed
Summary

TSH receptor gene mutations explain hyperfunctioning thyroid adenomas and familial hyperthyroidism. Other mutations cause congenital hypothyroidism, while mRNA variants may link to thyroid eye disease.

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TSH Receptor Mutations and Thyroid Disease.

Trends in endocrinology and metabolism: TEM·2008

Area of Science:

  • Molecular endocrinology
  • Genetics of thyroid disease

Background:

  • The TSH receptor (TSHR) is crucial for thyroid function.
  • Understanding TSHR molecular biology impacts thyroid disease diagnosis and treatment.

Purpose of the Study:

  • To review recent advances in TSHR molecular biology.
  • To explain the role of TSHR mutations in various thyroid conditions.

Main Methods:

  • Functional characterization of TSHR gene mutations.
  • Analysis of TSHR mRNA variants.
  • Bacterial expression of TSHR protein.

Main Results:

  • Constitutively activating TSHR mutations cause hyperfunctioning thyroid adenomas and non-autoimmune hyperthyroidism.
  • TSHR mutations causing reduced TSH sensitivity lead to congenital hypothyroidism.

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  • TSHR mRNA variants are found in thyroid-associated ophthalmopathy.

    • Conclusions:

    • TSHR mutations are key molecular mechanisms in hyperfunctioning adenomas and familial/congenital hyperthyroidism.
    • TSHR mutations are implicated in non-autoimmune congenital hypothyroidism.
    • Further research on TSHR variants may elucidate thyroid-associated ophthalmopathy pathogenesis.