Repair of cranial bone defects with adipose derived stem cells and coral scaffold in a canine model.

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

• Level A · Stronger Clinical Evidence
• Level B · Emerging clinical evidence with positive signals
• Level C · Early human research exploring benefits
• Level D · Scientific groundwork from lab and animal studies
• Emerging · Emerging topic under active research

Abstract (original English)

Adipose derived stem cells (ASCs) with osteogenic differentiation potential have been documented as an alternative cell source for bone regeneration. However, most of previous in vivo studies were carried out on small animals along with relatively short-term follow-up. In this study, we investigated the feasibility of using ASCs and coral scaffolds to repair a cranial bone defect in a canine model, and followed up the outcome for up to 6 month. Autologous ASCs isolated from canine subcutaneous fat were expanded, osteogenically induced, and seeded on coral scaffolds. Bilateral full-thickness defects (20 mm x 20 mm) of parietal bone were created. The defects were either repaired with ASC-coral constructs (experimental group) or with coral alone (control group). Three-dimensional CT scan showed that new bones were formed in the experimental group at 12 weeks post-implantation, while coral scaffolds were partially degraded in the control group. By radiographic analysis at 24 weeks post-transplantation, it was shown that an average of 84.19+/-6.45% of each defect volume had been repaired in experimental side, while the control side had only 25.04+/-18.82% of its volume filled. Histological examination revealed that the defect was repaired by typical bone tissue in experimental side, while only minimal bone formation with fibrous connection was observed in the control group. The succ

Evidence level

Evidence from laboratory and animal studies provides groundwork for understanding mechanisms and potential before human studies continue.

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