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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.
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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.
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Skeleton and Calcium Homeostasis01:21

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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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Major Hormones and Their Functions01:27

Major Hormones and Their Functions

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Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
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Adrenal Gland Disorders01:27

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Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
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Synthesis and Functions of Calcitonin00:51

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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.
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Updated: Jul 18, 2025

Generation of Hypoparathyroid Rats via Carbon-Nanoparticle-Assisted Parathyroidectomy
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Secondary Hyperparathyroidism.

Brendan C Stack1

  • 1Department of Otolaryngology-HNS Southern Illinois University/SIU Medicine, 720 North Bond Street, PO Box 19662, Springfield, IL 62794-9662, USA.

Otolaryngologic Clinics of North America
|August 27, 2023
PubMed
Summary
This summary is machine-generated.

Secondary hyperparathyroidism (SHPT) arises from metabolic issues, not primary gland defects. Vitamin D and calcium deficiencies, linked to modern lifestyles, are now leading causes of SHPT.

Keywords:
Chronic kidney diseaseDialysisParathyroidSecondary hyperparathyroidism

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Area of Science:

  • Endocrinology
  • Nephrology
  • Nutritional Science

Background:

  • Secondary hyperparathyroidism (SHPT) is a physiological response to metabolic disturbances, not an intrinsic parathyroid issue.
  • Traditionally associated with chronic kidney disease, SHPT's etiology is evolving.
  • Modern lifestyle factors like reduced sun exposure and processed food diets are increasingly implicated.

Purpose of the Study:

  • To elucidate the non-primary origins of secondary hyperparathyroidism.
  • To highlight the shift in leading causes of SHPT.
  • To underscore the impact of lifestyle on parathyroid health.

Main Methods:

  • Review of existing literature on SHPT pathophysiology.
  • Analysis of epidemiological trends in SHPT etiology.
  • Correlation of lifestyle factors with metabolic changes leading to SHPT.

Main Results:

  • SHPT is confirmed as a secondary condition, a response to systemic metabolic changes.
  • Vitamin D and calcium deficiencies are identified as primary drivers of SHPT.
  • Reduced outdoor activity and processed food consumption are linked to these deficiencies.

Conclusions:

  • SHPT etiology is multifactorial, with lifestyle-induced deficiencies now prominent.
  • Understanding these evolving causes is crucial for effective SHPT management.
  • Public health initiatives addressing diet and sun exposure may mitigate SHPT prevalence.