Tissue Engineering Using Human Mineralized Bone Xenograft and Bone Marrow Mesenchymal Stem Cells Allograft in Healing of Tibial Fracture of Experimental Rabbit Model
نویسندگان
1 Department of Biology, Faculty of Sciences, University of Tarbiat Moallem, Tehran, Iran
2 Department of Dental Materials, Faculty of Dentistry, Tehran University of Medical Sciences,Tehran, Iran
3 1Department of Tissue Engineering and Cell Therapy, School of Advanced Medical Technologies, Tehran University of Medical Sciences, Tehran, Iran, 2Research Center for Science and Technology in Medicine, Tehran University of Medical Sciences, Tehran, Iran, 3Stem Cell and Transgenic Technology Research Center, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
4 Research Center and Iranian Bank of graft products, Tehran, Iran
5 Stem Cell and Transgenic Technology Research Center, Department of Pathology, Shiraz University of Medical Sciences, Shiraz, Iran
doi
چکیده
Background: Bone healing and its reconstruction in fractures, especially in long bones are of particular importance in regenerative medicine. This study compares the bone healing rate after a human xenograft of mineralized bone and together with an allograft of bone marrow mesenchymal stem cells (MSCs) in an experimental tibial bone fracture rabbit model.Methods: In fall 2009, twenty New Zealand white rabbits were randomly divided into 2 equal groups. In both groups, a 5 mm segmental defect was created in the right tibia. In group A, a scaffold pin was seeded with allogenic rabbit MSCs and was placed in the defect area and in group B, the defect was filled with an unseeded pin human mineralized bone xenograft. An untreated defect was induced in the left tibia of all animals serving as the control. After 4-8 weeks, the segmental defects were histologically evaluated and also by a compressive test.Results: In groups A and B, healing and formation of new bony tissue were significantly more than the control group and with a significant less inflammation. Conclusion: Tissue engineering of mineralized bone xenograft and MSCs allograft may be significant steps in bone healing and regenerative medicine .
