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Related Concept Videos

Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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Bone Remodeling01:40

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Bone remodeling is a continuous and balanced process of bone resorption by osteoclasts and bone formation by osteoblasts. In adults, it helps maintain bone mass and calcium homeostasis. While mechanical stress can stimulate turnover as part of the normal maintenance and reparative process, several hormones also regulate bone remodeling.
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Spongy Bone01:09

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All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
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Compact Bone01:27

Compact Bone

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Most bones contain compact and spongy osseous tissue, but their distribution and concentration vary based on the bone's overall function.
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Fractures: Bone Repair01:27

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
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Bone Formation by Intramembranous Ossification01:29

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Intramembranous ossification is one of the two processes involved in the development of bones within an embryo. The flat bones of the face, most of the cranial bones, and the clavicles are formed via this process. During intramembranous ossification, the bones develop directly from sheets of undifferentiated mesenchymal connective tissue.
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Related Experiment Video

Updated: Dec 2, 2025

Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect
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Distinctive Capillary Action by Micro-channels in Bone-like Templates can Enhance Recruitment of Cells for Restoration of Large Bony Defect

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Bioactive Core-Shell CaF2 Upconversion Nanostructure for Promotion and Visualization of Engineered Bone

Zhihao Li1, Haoran Liu1, Rui Wang2

  • 1Key Laboratory of Analytical Chemistry for Biological Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China.

ACS Nano
|November 5, 2020
PubMed
Summary

This study developed a novel nanodepot for regulating inorganic ion metabolism. The nanodepot accelerates bone regeneration and monitors biomineralization, offering potential in regenerative medicine.

Keywords:
bioactive glassesbiomineralizationfluoridetissue engineeringupconversion

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Last Updated: Dec 2, 2025

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Regenerative Medicine

Background:

  • Inorganic ion metabolism is crucial for cellular functions and biological activities.
  • Effective regulation and monitoring of ion metabolism are key for therapeutic interventions.
  • Biomineralization processes are vital for tissue regeneration, particularly in bone defects.

Purpose of the Study:

  • To develop a synergistic nanodepot for accelerated and monitored biomineralization.
  • To investigate the role of integrated mineral ions in enhancing bone regeneration.
  • To create a nanoprobe capable of recognizing and monitoring osteoblasts during biomineralization.

Main Methods:

  • Fabrication of a core-shell CaF2 upconversion nanostructure as a bioactive nanodepot.
  • Integration of multiple mineral ions within the nanodepot for controlled release.
  • In vivo studies to evaluate the acceleration of bone defect regeneration.
  • Development of osteoblast-specific recognition for biomineralization monitoring.

Main Results:

  • The nanodepot successfully released multiple mineral ions, promoting inorganic crystal growth and organic matrix production.
  • Synergistic action of released ions significantly accelerated bone defect regeneration in vivo.
  • The nanodepot demonstrated specific recognition of osteoblasts, enabling effective monitoring of biomineralization.
  • The developed nanoprobe facilitated the promotion and monitoring of biomineralization-related metabolic activities.

Conclusions:

  • The synergistic nanodepot is an effective strategy for promoting and monitoring biomineralization.
  • This approach holds significant potential for applications in fundamental research, disease diagnosis, and regenerative medicine.
  • The core-shell CaF2 upconversion nanostructure offers a versatile platform for metabolic regulation and tissue engineering.