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Thyroid hormone action in neural development.

C C Thompson1, G B Potter

  • 1Johns Hopkins University School of Medicine, Department of Neuroscience, Kennedy Krieger Institute, Baltimore, MD 21205, USA. thompsonc@kennedykrieger.org

Cerebral Cortex (New York, N.Y. : 1991)
|September 28, 2000
PubMed
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Thyroid hormone is crucial for brain development, impacting genes like Srg1 and hairless. Understanding these thyroid hormone-responsive genes helps explain functional deficits in the hypothyroid brain.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Molecular Endocrinology

Background:

  • Thyroid hormone's role in brain development is known, but mechanisms are unclear.
  • Hypothyroidism causes functional brain impairments despite normal morphology.
  • Nuclear receptors for thyroid hormone act as transcription factors.

Purpose of the Study:

  • To investigate the mechanism of thyroid hormone action in brain development.
  • To identify thyroid hormone-responsive genes involved in brain development.
  • To correlate gene expression with functional deficits in the hypothyroid brain.

Main Methods:

  • Review of identified thyroid hormone-responsive genes.
  • Analysis of gene expression patterns in hypothyroid models.

Related Experiment Videos

  • Correlation of gene expression with observed functional deficits.

    • Main Results:

    • Identified thyroid hormone-responsive genes, including synaptotagmin-related gene 1 (Srg1) and hairless.
    • Srg1 may mediate synaptic structure and activity.
    • Hairless acts as a transcriptional cofactor influencing other responsive genes.

    Conclusions:

    • Thyroid hormone-regulated gene expression is vital for mediating brain development.
    • Identified genes provide insights into functional impairments in the hypothyroid brain.
    • Further research into these genes can elucidate thyroid hormone's developmental role.