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Heat-stimuli-enhanced osteogenesis using clinically available biomaterials
Takehiro Ota1, Yoshihiro Nishida1, Kunihiro Ikuta1
1Department of Orthopaedic Surgery, Nagoya University Graduate School and School of Medicine, Nagoya, Japan.
Plos One
|July 19, 2017
Summary
Heat stress using clinically approved materials significantly stimulates bone formation (osteogenesis) in rats and rabbits when applied weekly. This novel approach shows promise for treating bone defects.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Orthopedic Research
Background:
- Previous studies indicated heat stress stimulates osteogenesis using non-clinical materials.
- Clinical application requires investigation with approved biomaterials and larger animal models.
Purpose of the Study:
- To evaluate heat stimuli-triggered osteogenesis in rat and rabbit models.
- To assess efficacy using clinically applicable materials: Resovist® and REGENOS®.
Main Methods:
- Utilized rat tibial defect models and rabbit models, divided into hyperthermia (45°C for 15 min) and control groups.
- Applied hyperthermia once or three times weekly.
- Assessed osteogenesis via micro-CT and histological examination at 4 weeks.
Main Results:
- Weekly hyperthermia significantly stimulated osteogenesis in both rats and rabbits compared to controls (p < 0.05).
- Triple weekly treatment did not enhance osteogenesis.
- Increased alkaline phosphatase expression observed in vitro in osteoblastic cells.
Conclusions:
- Heat stimuli with clinically approved materials effectively promote osteogenesis.
- Weekly application is key for efficacy.
- This method presents a promising therapeutic strategy for bone defect treatment.
