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Related Concept Videos

Osteoclasts in Bone Remodeling01:31

Osteoclasts in Bone Remodeling

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 bone...

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Osteoclast Derivation from Mouse Bone Marrow
06:17

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Published on: November 6, 2014

Collagen barrier membranes decrease osteoclastogenesis in murine bone marrow cultures.

Hermann Agis1, Magdalena Magdalenko, Katharina Stögerer

  • 1Department of Oral Surgery, Medical University of Vienna, Vienna, Austria.

Clinical Oral Implants Research
|March 27, 2010
PubMed
Summary
This summary is machine-generated.

Collagen barrier membranes (CBM) reduce osteoclast formation but not activity, supporting guided bone regeneration. CBM do not inhibit osteoblastogenesis, suggesting a direct role in graft consolidation.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Tissue Engineering

Background:

  • Collagen barrier membranes (CBM) are crucial for guided bone regeneration, aiding graft consolidation.
  • The precise mechanisms by which CBM influence bone cell differentiation remain unclear.

Purpose of the Study:

  • To investigate the in vitro effects of CBM on osteoclast and osteoblast differentiation.
  • To elucidate the role of CBM in controlling progenitor cell fate during bone regeneration.

Main Methods:

  • In vitro bone marrow cultures were established on CBM (Bio-Gide).
  • Osteoclastogenesis was assessed by tartrate-resistant acid-phosphatase (TRAP+) multinucleated cell counts and resorption assays.
  • Osteoblastogenesis was evaluated by alkaline-phosphatase activity, and cell viability was measured using the MTT assay.

Main Results:

  • CBM significantly reduced the formation of TRAP+ multinucleated osteoclasts on both porous and dense surfaces.
  • Osteoclast activity and osteoblastogenesis were not inhibited by CBM.
  • Cell viability remained unaffected, indicating CBM do not induce cytotoxicity.

Conclusions:

  • CBM inhibit osteoclast formation but not their resorptive activity.
  • CBM do not impede the differentiation of osteogenic progenitor cells.
  • These findings suggest CBM directly influence osteoclastogenesis, contributing to their efficacy in guided bone regeneration.