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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...
Type I Diabetes I: Introduction01:12

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
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: Jun 24, 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 autoimmunity and environment.

M L Tanda1, E Piantanida, A Lai

  • 1Department of Clinical Medicine, University of Insubria, Varese, Italy.

Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme
|April 4, 2009
PubMed
Summary
This summary is machine-generated.

Genetic factors contribute significantly to autoimmune thyroid disorders (AITDs), but environmental influences like smoking and diet also play a crucial role. Understanding gene-environment interactions is key to unraveling the complex causes of AITDs.

Related Experiment Videos

Last Updated: Jun 24, 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
  • Genetics

Background:

  • Autoimmune thyroid disorders (AITDs) arise from a complex interplay of genetic predisposition and environmental triggers.
  • Genetics account for a substantial portion (70-80%) of AITD liability.
  • Environmental factors contribute significantly (20-30%) to AITD development, though their precise roles and mechanisms are often unclear.

Purpose of the Study:

  • To highlight the significant contribution of environmental factors in the etiology of AITDs.
  • To underscore the importance of gene-environment interactions in AITD pathogenesis.
  • To provide an overview of potential environmental triggers for AITDs.

Main Methods:

  • Review of existing literature on genetic and environmental factors in AITDs.
  • Analysis of evidence linking specific environmental factors to AITD onset.
  • Discussion of the proposed mechanisms of gene-environment interaction in AITDs.

Main Results:

  • Smoking is a confirmed environmental factor for Graves' disease and orbitopathy.
  • Other probable environmental factors include stress, iodine and selenium intake, certain drugs, irradiation, pollutants, infections, allergies, pregnancy, and postpartum conditions.
  • The precise mechanisms by which environmental factors influence AITD development are often not fully elucidated.

Conclusions:

  • Gene-environment interaction is a fundamental process in the development of AITDs.
  • Environmental factors, alongside genetic susceptibility, are critical in the multifactorial etiology of AITDs.
  • Further research is needed to clarify the specific roles and mechanisms of various environmental factors in AITDs.