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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
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...
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...
Psychoneuroimmunology: Diabetes and Cancer01:19

Psychoneuroimmunology: Diabetes and Cancer

Chronic stress has been linked to both the onset and progression of serious health conditions, including Type 2 diabetes and cancer. Type 2 diabetes, a widespread chronic illness, is closely associated with obesity and insulin resistance, both of which often worsen under stress. Studies indicate that men experiencing high levels of chronic stress face a 45% higher risk of developing diabetes compared to those with minimal stress. Stress triggers physiological responses that elevate blood...
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...

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Related Experiment Video

Updated: Jul 12, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

Stress and autoimmune thyroid diseases.

Marcello Bagnasco1, Irene Bossert, Giampaola Pesce

  • 1Department of Internal Medicine, University of Genoa, Genoa, Italy. bagnasco@csita.unige.it

Neuroimmunomodulation
|August 22, 2007
PubMed
Summary

Autoimmune thyroid diseases (AITD), common in Western countries, present as autoimmune thyroiditis (AT) or Graves

Area of Science:

  • Endocrinology
  • Immunology
  • Genetics

Background:

  • Autoimmune thyroid diseases (AITD) are prevalent, affecting over 5% of Western populations.
  • AITD encompasses autoimmune thyroiditis (AT) and Graves' disease (GD), distinct in pathophysiology and clinical presentation.
  • While sharing genetic links, AT primarily causes hypothyroidism via cell-mediated destruction, whereas GD causes hyperthyroidism via receptor stimulation.

Purpose of the Study:

  • To differentiate the clinical and pathophysiological aspects of AT and GD.
  • To highlight the heterogeneity in AITD presentation and its impact on management.
  • To discuss associated non-thyroidal manifestations like Graves' orbitopathy.

Main Methods:

  • Review of existing literature on AITD pathophysiology and clinical manifestations.

Related Experiment Videos

Last Updated: Jul 12, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

  • Comparative analysis of AT and GD based on disease mechanisms and patient outcomes.
  • Examination of diagnostic and therapeutic considerations for different AITD forms.

    • Main Results:

    • AT leads to hypothyroidism through thyroid cell destruction.
    • GD results in hyperthyroidism due to TSH receptor stimulation.
    • Graves' orbitopathy, potentially linked to TR antibodies, can be a severe, sight-threatening complication.

    Conclusions:

    • Effective AITD management hinges on recognizing and treating the specific thyroid dysfunction.
    • The distinct natural histories of AT and GD necessitate tailored clinical approaches.
    • Non-thyroidal complications like orbitopathy require independent clinical consideration.