Thyroid hormone and thyromimetics inhibit myelin and axonal degeneration and oligodendrocyte loss in EAE

P. Chaudhary, G. H. Marracci, E. Calkins, E. Pocius, A. L. Bensen, T. S. Scanlan, B. Emery, D. N. Bourdette

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We have previously demonstrated that thyromimetics stimulate oligodendrocyte precursor cell differentiation and promote remyelination in murine demyelination models. We investigated whether a thyroid receptor-beta selective thyromimetic, sobetirome (Sob), and its CNS-targeted prodrug, Sob-AM2, could prevent myelin and axonal degeneration in experimental autoimmune encephalomyelitis (EAE). Compared to controls, EAE mice receiving triiodothyronine (T3, 0.4 mg/kg), Sob (5 mg/kg) or Sob-AM2 (5 mg/kg) had reduced clinical disease and, within the spinal cord, less tissue damage, more normally myelinated axons, fewer degenerating axons and more oligodendrocytes. T3 and Sob also protected cultured oligodendrocytes against cell death. Thyromimetics thus might protect against oligodendrocyte death, demyelination and axonal degeneration as well as stimulate remyelination in multiple sclerosis.

Original languageEnglish (US)
Article number577468
JournalJournal of Neuroimmunology
Volume352
DOIs
StatePublished - Mar 15 2021
Externally publishedYes

Keywords

  • EAE
  • Inflammation
  • Myelin
  • Oligodendrocytes
  • Thyromimetics

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Neurology
  • Clinical Neurology

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