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11:17
Spark Plasma Sintering Apparatus Used for the Formation of Strontium Titanate Bicrystals
Published on: February 9, 2017
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Titanium Surface Synergy: Strontium Incorporation and Controlled Disorder Nanotopography Optimize Osteoinduction
Peter S Young1,2,3, Andrew I M Greer4, Carol-Anne Smith1,3
1Centre for the Cellular Microenvironment, School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, The Advanced Research Centre, 11 Chapel Lane, Glasgow G11 6EW, Scotland, U.K.
ACS Applied Materials & Interfaces
|November 7, 2024
Summary
This study developed titanium (Ti) surfaces with nanoscale patterns and strontium (Sr) to enhance bone formation and prevent bone loss. The novel surfaces promote osteogenesis and inhibit osteoclast formation, offering a promising approach for orthopedic implants.
Area of Science:
- Biomaterials Science
- Orthopedic Engineering
- Cell Biology
Background:
- Osteoporotic fractures and arthritis pose significant socioeconomic burdens.
- Titanium (Ti) implants are crucial for fracture fixation and joint replacement.
- Enhancing osteogenesis and reducing osteoclast formation are key goals for implantable biomaterials.
Purpose of the Study:
- To create titanium surfaces with nanoscale topography and strontium (Sr) incorporation.
- To evaluate the osteogenic and osteoclastogenic potential of these novel Ti surfaces.
- To investigate the combined effects of nanoscale topography and Sr elution on bone cell behavior.
Main Methods:
- Fabrication of Ti surfaces with a specific nanoscale topography (near-square 50, NSQ50).
- Incorporation of strontium (Sr) into the Ti surfaces.
- Assessment using human bone marrow stromal cell (BMSC)/bone marrow hematopoietic cell (BHSC) cocultures.
- Analysis of Sr elution, Sr uptake, osteogenesis, and osteoclastogenesis markers (RANKL, M-CSF, OPG).
Main Results:
- Ti surfaces with NSQ50 topography demonstrated osteogenic properties.
- Strontium elution from Ti surfaces significantly enhanced osteogenesis.
- BMSCs on Ti surfaces did not produce RANKL or M-CSF but secreted high levels of OPG, inhibiting osteoclast formation.
- Combined Sr incorporation and NSQ50 topography resulted in highly osteogenic Ti surfaces that inhibited osteoclastogenesis.
Conclusions:
- Sr-incorporated nanotopographical Ti surfaces are highly osteogenic.
- These surfaces effectively inhibit osteoclast formation, potentially reducing implant-associated bone loss.
- This approach offers a promising strategy for developing advanced orthopedic implants.
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