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Related Concept Videos

Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
Upon reaching the thyroid gland, TSH stimulates the follicular cells' active uptake of iodide ions from the blood. The ions diffuse to the apical surface of the cells and are oxidized to iodine. The iodine is then...
Functions of Thyroid Hormones01:18

Functions of Thyroid Hormones

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.
TH is indispensable for the normal development and maturation of the skeletal, muscular, and nervous systems during fetal and childhood growth. It facilitates bone mineral turnover and regulates protein synthesis in developing tissues, contributing significantly to overall growth and...
Hypothyroidism II: Pathophysiology01:23

Hypothyroidism II: Pathophysiology

Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
Graves Disease II: Pathophysiology01:24

Graves Disease II: Pathophysiology

Graves’ disease is an autoimmune disorder characterized by the production of thyroid-stimulating immunoglobulins (TSI) that activate TSH receptors, leading to excessive synthesis and release of thyroid hormones (T3 and T4) and resulting in hyperthyroidism.Among all causes of hyperthyroidism, Graves’ disease is the most common and can happen at any age, though it is more frequent in women. It produces a hypermetabolic state with features such as weight loss, tachycardia, tremor, and heat...
Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...
The Thyroid Gland01:23

The Thyroid Gland

The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...

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Related Experiment Video

Updated: Jun 27, 2026

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function
04:05

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

Published on: October 6, 2023

[Interactions between brain, psyche and thyroid].

M Schmidt1, W Huff, M Dietlein

  • 1Klinik und Poliklinik für Nuklearmedizin, Universitätsklinikum Köln, Kerpener Str. 62, 50937 Köln. Matthias.Schmidt@uni-koeln.de

Nuklearmedizin. Nuclear Medicine
|December 6, 2008
PubMed
Summary
This summary is machine-generated.

Thyroid hormone imbalances significantly impact brain function and mental health. Early diagnosis and levothyroxine treatment are crucial for managing hypothyroidism and hyperthyroidism, improving cognitive and mood symptoms.

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In vivo Characterization of Endocrine Disrupting Chemical Effects via Thyroid Hormone Action Indicator Mouse
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In vivo Characterization of Endocrine Disrupting Chemical Effects via Thyroid Hormone Action Indicator Mouse

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Last Updated: Jun 27, 2026

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function
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Published on: October 6, 2023

In vivo Characterization of Endocrine Disrupting Chemical Effects via Thyroid Hormone Action Indicator Mouse
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Published on: October 6, 2023

Area of Science:

  • Endocrinology
  • Neuroscience
  • Psychiatry

Context:

  • The intricate relationship between thyroid function, brain activity, and psychological well-being is historically recognized but often underestimated in clinical practice.
  • Thyroid disorders, including hypothyroidism and hyperthyroidism, present with a wide spectrum of neurological and psychiatric symptoms.

Purpose:

  • To underscore the clinical significance of thyroid-brain-psyche interactions.
  • To highlight the diagnostic and therapeutic implications of thyroid dysfunction in various patient populations, from newborns to the elderly.

Summary:

  • Thyroid hormone deficiency during pregnancy can cause irreversible intellectual disability, necessitating prompt levothyroxine treatment.
  • Congenital hypothyroidism requires lifelong levothyroxine therapy.
  • Hypothyroidism shares symptoms with depression, and levothyroxine can improve cognitive function and mood.
  • Hyperthyroidism can manifest as agitation, anxiety, and mood disturbances.
  • Distinguishing organic thyroid disease from non-specific laboratory abnormalities is vital in psychiatric patients.

Impact:

  • Emphasizes the importance of thyroid screening and management in neurological and psychiatric care.
  • Levothyroxine therapy can effectively reverse psychiatric symptoms associated with hypothyroidism.
  • Highlights the need for integrated care approaches for patients with co-occurring thyroid and mental health conditions.