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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...
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...
Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
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...
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 18, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
04:39

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

Interferon induced thyroiditis.

Yaron Tomer1, Francesca Menconi

  • 1Department of Medicine, Division of Endocrinology, Mount Sinai School of Medicine, Box 1118, One Gustave L. Levy Place, New York, NY 10029, USA. Yaron.Tomer@mssm.edu

Best Practice & Research. Clinical Endocrinology & Metabolism
|November 28, 2009
PubMed
Summary
This summary is machine-generated.

Interferon-alpha (IFNalpha) therapy for hepatitis C can cause thyroiditis in up to 40% of patients. Understanding the mechanisms of interferon-induced thyroiditis (IIT) is crucial for early detection and managing thyroid complications.

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Development and Validation of an Ultrasensitive Single Molecule Array Digital Enzyme-linked Immunosorbent Assay for Human Interferon-&#945;
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Area of Science:

  • Endocrinology
  • Immunology
  • Hepatology

Background:

  • Interferon-alpha (IFNalpha) is a common treatment for chronic hepatitis C virus (HCV) infection.
  • Thyroiditis is a frequent side effect of IFNalpha therapy, affecting up to 40% of patients.
  • Interferon-induced thyroiditis (IIT) can range from subclinical to severe, potentially requiring treatment cessation.

Purpose of the Study:

  • To explore the mechanisms underlying interferon-induced thyroiditis (IIT).
  • To understand the role of hepatitis C virus (HCV) in the development of thyroiditis.
  • To highlight the importance of early detection and management of IIT.

Main Methods:

  • Epidemiological data review of IIT in HCV patients.
  • Clinical presentation analysis of autoimmune and non-autoimmune thyroiditis.
  • Review of proposed mechanisms involving immune stimulation and direct thyroid effects of IFNalpha.

Main Results:

  • IIT presents as autoimmune thyroiditis (Hashimoto's, Graves') or non-autoimmune thyroiditis (destructive, hypothyroidism).
  • HCV infection is strongly associated with thyroiditis, suggesting a role in IIT pathogenesis.
  • IFNalpha is believed to induce thyroiditis through immune-stimulatory and direct thyroid effects.

Conclusions:

  • The precise mechanisms of IIT require further elucidation.
  • Early identification and treatment of IIT are essential to prevent complications like cardiac arrhythmias.
  • Further research into IIT mechanisms may improve patient outcomes during IFNalpha therapy.