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Related Concept Videos

The Parathyroid Glands00:59

The Parathyroid Glands

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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...
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Functions of Thyroid Hormones01:18

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.
TH is indispensable for the normal development and maturation of the skeletal, muscular, and nervous systems during fetal and childhood growth. It facilitates bone mineral turnover and regulates protein synthesis in developing tissues, contributing significantly to overall growth and...
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Synthesis and Regulation of Thyroid Hormones01:20

Synthesis and Regulation of Thyroid Hormones

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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.
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...
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The Thyroid Gland01:23

The Thyroid Gland

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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.
The follicles have a central cavity lined by simple cuboidal to squamous epithelial cells called follicular cells. These cells produce the glycoprotein...
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Hormones and Bone Tissue01:17

Hormones and Bone Tissue

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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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Skeleton and Calcium Homeostasis01:21

Skeleton and Calcium Homeostasis

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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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Updated: Oct 1, 2025

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Thyroid and Parathyroid Conditions: Hyperthyroidism.

Morgan Adams Rhodes1, Cristin Swords Adams2, Scott Bragg2

  • 1Department of Family and Preventive Medicine - School of Medicine Columbia - University of South Carolina, 6311 Garners Ferry Road, Columbia, SC 29209.

FP Essentials
|March 2, 2022
PubMed
Summary
This summary is machine-generated.

Hyperthyroidism, an excess of thyroid hormones, can lead to serious health issues if untreated. Effective management options exist for both overt and subclinical forms, including medications and definitive therapies.

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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

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Two Techniques to Create Hypoparathyroid Mice: Parathyroidectomy Using GFP Glands and Diphtheria-Toxin-Mediated Parathyroid Ablation
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Establishment of a Simple and Effective Rat Model for Intraoperative Parathyroid Gland Imaging
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Area of Science:

  • Endocrinology
  • Internal Medicine

Background:

  • Hyperthyroidism involves excessive thyroid hormone production, stemming from conditions like Graves' disease.
  • Overt hyperthyroidism presents with low thyrotropin (TSH) and high thyroid hormones (T3, T4), while subclinical hyperthyroidism shows low TSH with normal T3 and T4.
  • Untreated hyperthyroidism increases risks for mortality, cardiovascular events, atrial fibrillation, and osteoporosis.

Purpose of the Study:

  • To review the causes, symptoms, and long-term consequences of hyperthyroidism.
  • To outline effective management strategies for overt and subclinical hyperthyroidism.
  • To define treatment indications for subclinical hyperthyroidism, particularly in older adults and at-risk individuals.

Main Methods:

  • Literature review of hyperthyroidism causes, diagnosis, and management.
  • Analysis of treatment guidelines for antithyroid drugs, radioactive iodine ablation, and thyroidectomy.
  • Examination of criteria for treating subclinical hyperthyroidism.

Main Results:

  • Hyperthyroidism management includes antithyroid drugs (propylthiouracil, methimazole) and definitive treatments (radioactive iodine, thyroidectomy).
  • Subclinical hyperthyroidism requires monitoring; treatment is advised for those over 65 with TSH < 0.10 mIU/L, symptomatic patients, or those with cardiac/osteoporotic risks.
  • Thyroid storm is a critical, life-threatening complication necessitating immediate hospitalization.

Conclusions:

  • Both overt and subclinical hyperthyroidism are manageable conditions with available therapeutic options.
  • Timely intervention and monitoring are crucial to prevent severe complications and improve patient outcomes.
  • Understanding risk factors and treatment guidelines ensures optimal care for hyperthyroid patients.