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Related Concept Videos

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 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...
The Parathyroid Glands00:59

The Parathyroid Glands

The two pairs of parathyroid glands embedded within the posterior surface of the thyroid gland are restricted by a dense capsule around them. These glands comprise two distinct cell populations—parathyroid oxyphil and parathyroid principal cells- pivotal in calcium homeostasis.
Oxyphil cells, whose functions remain elusive, emerge during late puberty, adding a layer of complexity to the parathyroid gland's intricacies. In contrast, principal parathyroid cells undertake a vital role by producing...
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...
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...
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...

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Related Experiment Video

Updated: May 15, 2026

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
03:57

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Published on: July 14, 2023

Secondary and tertiary hyperparathyroidism.

Sophie A Jamal1, Paul D Miller

  • 1University of Toronto, Women's College Research Institute, Toronto, Ontario, Canada. sophie.jamal@utoronto.ca

Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry
|December 27, 2012
PubMed
Summary
This summary is machine-generated.

Secondary hyperparathyroidism involves elevated parathyroid hormone (PTH) due to low calcium. Tertiary hyperparathyroidism, often seen post-kidney transplant, features excessive PTH and high calcium, with limited treatment data.

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Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
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Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Published on: August 17, 2022

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Last Updated: May 15, 2026

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
03:57

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy

Published on: July 14, 2023

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
07:12

Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging

Published on: August 17, 2022

Area of Science:

  • Endocrinology
  • Nephrology
  • Metabolic Bone Disease

Background:

  • Secondary hyperparathyroidism is a physiological response to stimuli like hypocalcemia.
  • Tertiary hyperparathyroidism develops after prolonged secondary hyperparathyroidism, often in chronic kidney disease patients.
  • Hypercalcemia is a hallmark of tertiary hyperparathyroidism, distinguishing it from secondary forms.

Purpose of the Study:

  • To review the causes and treatment strategies for secondary hyperparathyroidism.
  • To explore the etiology and current management approaches for tertiary hyperparathyroidism.
  • To highlight the limited data available for treating tertiary hyperparathyroidism.

Main Methods:

  • Literature review focusing on secondary and tertiary hyperparathyroidism.
  • Analysis of etiological factors contributing to both conditions.
  • Examination of existing therapeutic interventions and their outcomes.

Main Results:

  • Secondary hyperparathyroidism management is well-established.
  • Tertiary hyperparathyroidism commonly arises in patients with chronic kidney disease, particularly post-transplant.
  • Current treatment data for tertiary hyperparathyroidism is scarce, based on small, short-term studies.

Conclusions:

  • Understanding the distinct pathophysiology of secondary and tertiary hyperparathyroidism is crucial for appropriate management.
  • Further research is needed to establish effective and evidence-based treatments for tertiary hyperparathyroidism.
  • The review underscores the need for more robust clinical trials in tertiary hyperparathyroidism management.