Clinical Report: Expression Patterns of Type 3 Deiodinase in Brain Barriers

Overview

This study identifies the expression of type 3 deiodinase (DIO3) in non-neuronal cell types within brain barrier tissues during embryonic and neonatal development in mice.

Background

Thyroid hormone is essential for brain development, but its unregulated action can lead to tissue damage. Type 3 deiodinase (DIO3) is crucial for controlling thyroid hormone levels, particularly during sensitive developmental stages.

Data Highlights

No numerical data or trial data presented in the article.

Key Findings

• DIO3 expression was detected in the arachnoid barrier layer and choroid plexus during embryonic and neonatal development.
• RNA analyses confirmed early DIO3 expression in barrier tissues before their functional maturation.
• DIO3 was found in tanycytes lining the third ventricle and in pericytes at the neurovascular interface.
• The study utilized Dio3Cre-mediated cell labeling with a sensitive fluorescent reporter for detection.
• DIO3 expression is dynamic, peaking during immature stages of brain development.

Clinical Implications

The findings highlight the importance of DIO3 in regulating thyroid hormone levels at developmental interfaces in the brain.

Conclusion

The study provides insights into the expression of DIO3 in non-neuronal cell types within brain barrier tissues.

Related Resources & Content

1. Acta Neuropathologica — Amyloid Filaments of TMEM106B Found in Biondi Bodies of Ependymal Cells
2. Acta Neuropathologica — The Role of Cerebrospinal Fluid Barrier Dysfunction in the Pathogenesis of Neuromyelitis Optica
3. Acta Neuropathologica — The Role of Meninges in Regulating Fluid, Cellular, and Pathogen Movement in Rodent and Human Central Nervous Systems
4. ETA guidelines for the use of levothyroxine sodium preparations in monotherapy to optimize the treatment of hypothyroidism - PMC
5. Congenital Hypothyroidism: Screening and Management | Pediatrics | American Academy of Pediatrics
6. Acta Neuropathologica — Morphological Functionality of the Blood-Brain Barrier in Health and Disease
7. ETA guidelines for the use of levothyroxine sodium preparations in monotherapy to optimize the treatment of hypothyroidism - PMC
8. Congenital Hypothyroidism: Screening and Management | Pediatrics | American Academy of Pediatrics
9. 2024 European Thyroid Association Guidelines on diagnosis and management of genetic disorders of thyroid hormone transport, metabolism and action - PMC