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Functions of Thyroid Hormones

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The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
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The Thyroid Gland

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Hypothyroidism II: Pathophysiology

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A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function

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Thyroid hormone action in cerebellum and cerebral cortex development.

Fabrice Chatonnet¹, Frédéric Picou, Teddy Fauquier

¹Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, Université de Lyon, UMR CNRS 5242, 46 allée d'Italie, 69364 Lyon Cedex 07, France.

Journal of Thyroid Research

|July 19, 2011

Summary

This summary is machine-generated.

Thyroid hormones regulate vertebrate neurodevelopment by influencing gene transcription in brain cells. Further research is needed to understand how dietary chemicals may disrupt this crucial signaling pathway.

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Area of Science:

Endocrinology
Neuroscience
Developmental Biology

Background:

Thyroid hormones (TH), including thyroxine (T4) and triiodothyronine (T3), are critical for vertebrate neurodevelopment.
Specific transporters and deiodinases facilitate T3 entry and action within the developing brain.
T3 binds to nuclear receptors, directly modulating gene transcription and impacting neuronal and glial cell differentiation.

Purpose of the Study:

To highlight the essential role of thyroid hormones in neurodevelopment.
To emphasize the limited knowledge of T3 target genes.
To underscore the potential neurotoxic risks posed by dietary chemicals interfering with T3 signaling.

Main Methods:

Literature review on thyroid hormone action in neurodevelopment.
Analysis of known T3-regulated genes and pathways.
Discussion of potential mechanisms for chemical interference with T3 signaling.

Main Results:

Thyroid hormones are indispensable for normal brain development.
The precise molecular targets of T3 in the brain are not fully elucidated.
Certain food chemicals may disrupt T3 signaling, leading to neurodevelopmental issues.

Conclusions:

Understanding T3-mediated gene regulation is vital for neurodevelopmental research.
Investigating the impact of environmental chemicals on T3 signaling is crucial for public health.
Further research is required to identify T3 target genes and assess neurotoxicological risks.