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Related Concept Videos

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...
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...
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...
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...
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...
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...

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Related Experiment Video

Updated: Jun 26, 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 disorders during pregnancy].

R Gärtner1

  • 1Medizinische Klinik Innenstadt der Universität München. roland.gaertner@med.uni-muenchen.de

Deutsche Medizinische Wochenschrift (1946)
|January 15, 2009
PubMed
Summary
This summary is machine-generated.

Thyroid disorders during pregnancy increase miscarriage and morbidity risks. Supplementation with iodide, Levothyroxin, and selenium can mitigate risks for both mother and fetus.

Related Experiment Videos

Last Updated: Jun 26, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

Area of Science:

  • Endocrinology
  • Reproductive Medicine
  • Maternal-Fetal Medicine

Context:

  • Pregnancy significantly increases thyroid hormone demand (30-50%).
  • Iodine intake in Germany is borderline low, necessitating supplementation.
  • Thyroid disorders are linked to infertility, miscarriage, and pregnancy morbidity.

Purpose:

  • To review the impact of thyroid disorders on pregnancy outcomes.
  • To highlight the importance of thyroid hormone management during gestation.
  • To discuss therapeutic strategies for thyroid dysfunction in pregnant individuals.

Summary:

  • Subclinical hypothyroidism and elevated thyroid peroxidase (TPO) antibodies increase miscarriage and preterm delivery risks.
  • Levothyroxine supplementation may reduce risks in euthyroid women with TPO antibodies.
  • Selenium supplementation can reduce postpartum thyroiditis risk.
  • Graves' disease requires careful management with propylthiouracil; TSH receptor antibodies pose fetal risks.
  • Transient hyperthyroidism can occur with high hCG levels, often linked to hyperemesis gravidarum.

Impact:

  • Optimizing thyroid health in pregnant women is crucial for preventing adverse fetal and maternal outcomes.
  • Early diagnosis and management of thyroid disorders can improve pregnancy success rates.
  • Adequate iodine and nutrient supplementation supports healthy fetal brain development.