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Related Concept Videos

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...
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...
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...
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...
Hormones and Bone Tissue01:17

Hormones and Bone Tissue

The endocrine system produces and secretes hormones, which interact with the skeletal system. These hormones control bone growth, maintain bone once it is formed, and remodel it.
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...
Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.

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Demonstration of innate immune responses in the thyroid gland: potential to sense danger and a possible trigger for autoimmune reactions.

Thyroid : official journal of the American Thyroid Association·2012
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[Parathyroid hormone (PTH)].

Nihon rinsho. Japanese journal of clinical medicine·2010
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Vitamin D deficiency in two young adults with biochemical findings resembling pseudohypoparathyroidism type I and type II.

Endocrine journal·2010
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Iodide-induced chemokines and genes related to immunological function in cultured human thyroid follicles in the presence of thyrotropin.

Thyroid : official journal of the American Thyroid Association·2009
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Genes up- or down-regulated by high calcium medium in parathyroid tissue explants from patients with primary hyperparathyroidism.

Endocrine journal·2009
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Novel gain of function mutations of the calcium-sensing receptor in two patients with PTH-deficient hypocalcemia.

Internal medicine (Tokyo, Japan)·2009

Related Experiment Video

Updated: Jul 18, 2026

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
07:17

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation

Published on: April 14, 2016

[Graves' disease and bone metabolism].

Kanji Sato1

  • 1Institute of Clinical Endocrinology, Tokyo Women's Medical University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|December 13, 2006
PubMed
Summary

Thyroid hormone increases bone resorption and formation, but resorption dominates, lowering bone density. Bisphosphonates may prevent osteoporosis in hyperthyroid patients.

Area of Science:

  • Endocrinology
  • Bone Biology
  • Metabolic Diseases

Context:

  • Graves' disease is a common cause of hyperthyroidism.
  • Thyroid hormone significantly impacts bone metabolism.
  • Osteoporosis is a major health concern, especially in post-menopausal women.

Purpose:

  • To elucidate the mechanisms by which thyroid hormone affects bone resorption and formation.
  • To investigate the consequences of hyperthyroidism on bone mineral density (BMD).
  • To evaluate potential therapeutic strategies for preventing osteoporosis in hyperthyroid patients.

Summary:

  • Thyroid hormone enhances osteoclastic bone resorption via receptor activator of nuclear factor kappa B ligand (RANKL)-dependent and independent pathways.
  • Hyperthyroidism, as seen in Graves' disease, leads to increased bone resorption markers and accelerated bone remodeling.

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Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics
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Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics

Published on: March 1, 2022

Related Experiment Videos

Last Updated: Jul 18, 2026

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation
07:17

Murine Hind Limb Long Bone Dissection and Bone Marrow Isolation

Published on: April 14, 2016

Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics
09:43

Using Real-Time Cell Metabolic Flux Analyzer to Monitor Osteoblast Bioenergetics

Published on: March 1, 2022

  • While bone formation increases, it cannot compensate for resorption, resulting in decreased BMD, which is irreversible in post-menopausal women.

    • Impact:

    • Understanding thyroid hormone's role in bone metabolism is crucial for managing hyperthyroid-induced bone loss.
    • Early detection and intervention can prevent irreversible BMD loss and reduce fracture risk.
    • Bisphosphonates show promise in preventing osteoporosis and fractures in susceptible hyperthyroid patients.