Autologous ADSCs with exogenous NPY promotes fracture healing in ovariectomized rats
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Autologous adipose-derived stem cells with exogenous neuropeptide Y promoted osteoporotic fracture healing in ovariectomized rats, potentially via NPY's Y1 receptor and ADSCs' osteogenic differentiation.
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Abstract
Objective: To evaluate the role of autologous adipose-derived stem cells (ADSCs) with exogenous neuropeptide Y (NPY) on osteoporotic fracture healing. Methods: We established a fracture healing model in ovariectomized rats of osteoporosis. Autologous ADSCs, isolated from rats' subcutaneous adipose tissue, with exogenous NPY were transplanted into the fracture site four times a week. The fracture healing was observiked with X-ray diagnostic techniques, and the rats' tibias were taken out for section-staining and micro-CT scanning 3 and 6 weeks after fracture. Next, we explored the underlying mechanism by which the transplantation contributed to fracture healing. Results: Co-culture and co-transplantation of ADSCs with NPY could stimulate the osteoporotic fracture healing. NPY may promote the osteogenic differentiation of ADSCs through Y1 receptor. Conclusion: This result provides a platform for the development of novel therapies for bone regeneration with endogenous ADSCs.
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