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Related Concept Videos

Bone Disorders01:29

Bone Disorders

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Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
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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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Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
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Related Experiment Video

Updated: Mar 13, 2026

Skeletal Phenotype Analysis of a Conditional Stat3 Deletion Mouse Model
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Sclerostin deficiency in humans.

Antoon H van Lierop1, Natasha M Appelman-Dijkstra1, Socrates E Papapoulos1

  • 1Center for Bone Quality, Leiden University Medical Center, Leiden, The Netherlands.

Bone
|October 16, 2016
PubMed
Summary

Sclerosteosis and van Buchem disease are rare genetic bone disorders caused by sclerostin defects. Understanding sclerostin

Area of Science:

  • Genetics and Bone Metabolism
  • Rare Diseases
  • Endocrinology

Background:

  • Sclerosteosis and van Buchem disease are rare bone sclerosing dysplasias.
  • Both conditions result from genetic defects in sclerostin synthesis.
  • Sclerostin plays a crucial role in regulating bone metabolism.

Purpose of the Study:

  • To review the characteristics of sclerosteosis and van Buchem disease.
  • To enhance understanding of sclerostin's role in human bone metabolism.
  • To discuss therapeutic implications for osteoporosis.

Main Methods:

  • Review of demographic data.
  • Analysis of clinical manifestations.
  • Examination of biochemical, radiological, and histological findings.
Keywords:
Bone formationBone resorptionSclerosteosisSclerostinVan Buchem disease

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Main Results:

  • Detailed characterization of sclerosteosis and van Buchem disease patients.
  • Elucidation of sclerostin's function in bone metabolism.
  • Identification of potential therapeutic targets.

Conclusions:

  • Genetic defects in sclerostin cause bone sclerosing dysplasias.
  • Sclerostin is a key regulator of bone metabolism.
  • Findings inform the development of novel osteoporosis therapeutics.