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Related Concept Videos

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...
Hyperthyroidism II: Pathophysiology01:27

Hyperthyroidism II: Pathophysiology

Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...
Hyperthyroidism I: Introduction01:25

Hyperthyroidism I: Introduction

Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
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...
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: May 30, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

[Thyroid illness during pregnancy].

D Führer1

  • 1Zentrum für Innere Medizin, Klinik für Endokrinologie, Bereich Forschung und Lehre des Zentrallabors, Universitätsklinikum Essen, Hufelandstraße 55, 45122, Essen, Deutschland. dagmar.fuehrer@uk-essen.de

Der Internist
|August 5, 2011
PubMed
Summary
This summary is machine-generated.

Pregnancy alters thyroid hormone metabolism, and dysfunction like hypothyroidism or thyrotoxicosis can harm fetal development. Autoimmune thyroid diseases are common causes during pregnancy.

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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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Related Experiment Videos

Last Updated: May 30, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

In vivo Characterization of Endocrine Disrupting Chemical Effects via Thyroid Hormone Action Indicator Mouse
04:14

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

Published on: October 6, 2023

Area of Science:

  • Endocrinology
  • Obstetrics
  • Reproductive Medicine

Context:

  • Pregnancy involves significant physiological changes in thyroid hormone metabolism.
  • Distinguishing these changes from thyroid dysfunction is crucial for maternal and fetal health.
  • Thyroid dysfunction during pregnancy poses risks to both the mother and the developing fetus.

Purpose:

  • To highlight the impact of maternal thyroid dysfunction on pregnancy outcomes.
  • To differentiate normal physiological adaptations from pathological thyroid states.
  • To underscore the importance of managing thyroid disorders in pregnant individuals.

Summary:

  • Maternal hypothyroidism can cause irreversible neurocognitive deficits in the fetus.
  • Autoimmune thyroid diseases, such as Hashimoto's thyroiditis and Graves' disease, are prevalent in pregnancy.
  • Graves' disease often improves mid-pregnancy but worsens postpartum, with potential transplacental antibody transfer affecting the neonate.

Impact:

  • Early identification and management of thyroid dysfunction are vital for preventing adverse pregnancy and fetal outcomes.
  • Understanding thyroid physiology in pregnancy aids in accurate diagnosis and treatment strategies.
  • This knowledge is critical for improving neurodevelopmental outcomes and ensuring successful pregnancies.