Abstract
Biological characteristics of bone substituting tissue engineering construction (TEC) that contained porous calcium phosphate ceramic granulate (CPC) of phase structure ((tricalcium phosphate (TCP)), fibrin hydrogel and autologous multipotent mesenchymal stromal cells (auto-MMSC) induced and non-induced to osteogenic differentiation were studied in vivo. The following characteristics of TEC were determined: ability to transfer within its structure the viable auto-MMSC with preservation of their regeneration potential; ability to osteogenesis only under conditions of orthotopic implantation; ability of induced to osteogenic differentiation auto-MMSC to participate in the reparative processes for not more than within 6 weeks after implantation; negative affect of fibrin hydrogel on the osteoinductive properties of CPC within TCP structure. It was shown that to provide osteogenesis in the implanted TEC not only the viable auto-MMSC but simultaneous presence of osteoinductive and osteoconductive factors was required. No bone formation in a critical bone defect and in ectopic implantation takes place without observance of these conditions.
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