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Related Concept Videos

Autoimmune Disorders01:29

Autoimmune Disorders

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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
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The Thyroid Gland01:23

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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Synthesis and Regulation of Thyroid Hormones01:20

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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.
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Anatomy of the Intestines01:23

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Although digestion of proteins, carbohydrates, and lipids may begin in the stomach, it is completed in the intestine. The absorption of nutrients, water, and electrolytes from food and drink also occurs in the intestine. The intestines can be divided into two structurally distinct organs—the small and large intestines.
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Functions of Thyroid Hormones

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The thyroid hormone (TH) plays a pivotal role in the intricate orchestration of physiological processes, exerting profound effects on development, metabolism, and homeostasis throughout different life stages.
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Irritable Bowel Syndrome I: Introduction01:17

Irritable Bowel Syndrome I: Introduction

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Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
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Related Experiment Video

Updated: Nov 15, 2025

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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Gut microbiome and thyroid autoimmunity.

Camilla Virili1, Ilaria Stramazzo2, Marco Centanni3

  • 1Department of Medico-Surgical Sciences and Biotechnologies, ''Sapienza'' University of Rome, Latina, Italy.

Best Practice & Research. Clinical Endocrinology & Metabolism
|March 2, 2021
PubMed
Summary
This summary is machine-generated.

Altered gut microbiota may influence autoimmune thyroid diseases like Hashimoto's and Graves' disease. This review explores fecal microbiota changes and their interaction with thyroid disorder treatments.

Keywords:
Graves’orbithopathyHashimoto’s thyroiditisgraves’ diseasegut microbiotahypothyroidismthyroxine malabsorption

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Area of Science:

  • Microbiology
  • Immunology
  • Endocrinology

Background:

  • The gut microbiota significantly impacts intestinal barrier function, metabolism, and immune system development.
  • Emerging evidence links altered gut microbiota to the pathogenesis of various autoimmune disorders.
  • Thyroid autoimmune diseases, including Hashimoto's thyroiditis and Graves' disease, involve a loss of self-tolerance due to genetic and environmental factors.

Purpose of the Study:

  • To review current research on fecal microbiota composition in patients with autoimmune thyroid diseases.
  • To investigate the relationship between gut microbiota and common thyroid disorder treatments.

Main Methods:

  • Literature review of studies on fecal microbiota in autoimmune thyroid disease patients.
  • Analysis of the interplay between gut microbiota and therapeutic interventions for thyroid disorders.

Main Results:

  • Studies indicate significant alterations in gut microbiota composition in individuals with autoimmune thyroid diseases.
  • Specific microbial shifts correlate with disease progression and immune system dysregulation.
  • The interaction between gut microbiota and thyroid treatments is complex and warrants further investigation.

Conclusions:

  • Gut microbiota dysbiosis is implicated in the development and progression of autoimmune thyroid diseases.
  • Understanding these microbial changes may offer novel therapeutic targets.
  • Further research is needed to elucidate the precise mechanisms and therapeutic implications.