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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...
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 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...
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...
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 15, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

Association between thyroid autoimmune dysfunction and non-thyroid autoimmune diseases.

Antonio Augusto Velasco Cruz1, Patrícia Mitiko Santello Akaishi, Márcia Abelin Vargas

  • 1School of Medicine of Ribeirão Preto, University of São Paulo, Department of Ophthalmology, Otolaryngology, and Head-Neck Surgery, Brazil. aavecruz@fmrp.usp.br

Ophthalmic Plastic and Reconstructive Surgery
|April 7, 2007
PubMed
Summary

Thyroid autoimmune dysfunction is linked to non-thyroid autoimmune diseases. Patients with Graves disease and orbitopathy require screening for conditions like vitiligo, while those without orbitopathy may develop type 1 diabetes.

Related Experiment Videos

Last Updated: Jul 15, 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
  • Immunology
  • Ophthalmology

Background:

  • Thyroid autoimmune dysfunction, including Graves disease, often co-occurs with other autoimmune conditions.
  • Graves orbitopathy is a specific manifestation of Graves disease affecting the eyes.
  • Understanding the association between thyroid autoimmunity and non-thyroid autoimmune diseases is crucial for comprehensive patient care.

Purpose of the Study:

  • To determine the prevalence of non-thyroid autoimmune diseases in patients with and without Graves orbitopathy.
  • To investigate the association between thyroid autoimmune dysfunction and other systemic autoimmune conditions.

Main Methods:

  • Retrospective review of 254 patients with thyroid autoimmune disease.
  • Patients were categorized into groups with (n=150) and without (n=104) Graves orbitopathy.
  • Data included systemic diseases and detailed eye examination findings; mean follow-up was 5.25 years.

Main Results:

  • Non-thyroid autoimmune diseases were found in 9.4% of patients.
  • Type 1 diabetes was most common in patients without orbitopathy (6.7%).
  • Vitiligo was most common in patients with orbitopathy (4%).

Conclusions:

  • Thyroid autoimmune dysfunction is associated with various non-thyroid autoimmune diseases.
  • Patients with Graves disease without orbitopathy are at risk for polyglandular syndrome (e.g., type 1 diabetes).
  • Screening for other autoimmune conditions, particularly vitiligo, is recommended for patients with Graves orbitopathy.