Thyroxin displacement from single and combined thyroid hormone binding proteins by various test substances - Takeaways - MDSpire

Thyroxin displacement from single and combined thyroid hormone binding proteins by various test substances

  • By

  • J. Brandt

  • E. Fabian

  • A. Aktalay-Hippchen

  • L. Jedermann

  • R. Landsiedel

  • June 27, 2026

  • 0 min

Share

  • 1

    Thyroid hormones are essential for fetal and neuronal development, energy homeostasis, and thermogenesis.

  • 2

    L-thyroxine (T4) is primarily bound to three proteins: thyroxine binding globulin (TBG), transthyretin (TTR), and human serum albumin (HSA).

  • 3

    Displacement of T4 from TTR by exogenous compounds can lead to increased free T4 levels and potential adverse developmental outcomes.

  • 4

    A thyroid hormone protein binding (THPB) assay was developed to measure the displacement of T4 by various test substances from different binding proteins.

  • 5

    Eight test substances were evaluated for their ability to interfere with T4 binding to human TTR, TBG, and mixtures of THBPs.

Original Source(s)

Related Content