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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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Calcitonin, a vital polypeptide hormone, regulates calcium levels within body fluids. It is released by the parafollicular cells, also known as C cells, situated in the follicular epithelium of the thyroid gland. Calcitonin responds to fluctuations in blood calcium levels and the influence of gastrointestinal hormones like gastrin and cholecystokinin.
The exact mechanisms by which calcitonin operates in calcium homeostasis remain elusive, but its significance is evident in several vital...
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Related Experiment Video

Updated: May 6, 2026

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Protection of parathyroid function using carbon nanoparticles during thyroid surgery.

Kai Huang1, Dingyuan Luo, Mingqing Huang

  • 1Department of Thyroid and Vascular Surgery, Sun Yet-san Memorial Hospital, China.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|October 29, 2013
PubMed
Summary

Carbon nanoparticle (CN) suspension injection aids parathyroid gland identification during thyroid cancer surgery. This method significantly reduced symptomatic hypocalcemia compared to conventional surgery.

Keywords:
carbon nanoparticleshypocalcemiaparathyroid gland injurythyroid cancer surgery

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Area of Science:

  • Surgical Oncology
  • Nanotechnology in Medicine

Background:

  • Parathyroid gland (PG) injury is a common complication during thyroid cancer surgery.
  • Accurate identification of PGs is crucial to minimize hypocalcemia and related morbidity.

Purpose of the Study:

  • To evaluate the efficacy of injected carbon nanoparticle (CN) suspension in identifying parathyroid glands (PGs) during thyroid cancer surgery.
  • To determine if CN suspension reduces the incidence of PG injury and subsequent hypocalcemia.

Main Methods:

  • A prospective, randomized controlled trial involving 72 thyroid cancer patients.
  • Patients were randomized to conventional surgery or surgery with CN suspension injection.
  • Primary endpoint: prevalence of symptomatic hypocalcemia and serum calcium levels <1.9 mmol/L.

Main Results:

  • Symptomatic hypocalcemia occurred in 3/36 patients with CN injection versus 10/36 in the control group (P = .032).
  • Muscle cramps were significantly lower in the CN group (5.6%) compared to the control group (22.2%) (P = .041).

Conclusions:

  • Carbon nanoparticle suspension injection is a feasible and beneficial technique for thyroid cancer surgery.
  • The use of CN suspension was associated with a lower incidence of symptomatic hypocalcemia.
  • Further studies are warranted for comprehensive evaluation of this novel surgical adjunct.