Deneysel Omurilik Transeksiyon Modelinde Erişkin İnsan Mezenşim Kaynaklı Kök Hücrelerin Citosan Tüpler İçerisinde İmplantasyonunun Etkisi ve Sonuçları
Başak, Ahmet Tulgar
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Mesenchyme originated stem cells that are isolated from adult mesenchymal tissues were transplanted to damaged spinal cords in experimental animal models with various levels of axonal regeneration and functional recovery results. The fact that the survival feature of mesenchymal stem cells after transplantation in spite of everything constitutes an important obstacle in the development of cell treatments in the correction of spinal cord injuries. Chitosan tubes have been used to reconstruct or rebridge the injured area in the damaged spinal cord, to support axonal redevelopment and germination and to provide a protective environment for regeneration. This study evaluates properties of survival and differentiation for the mesenchymal stem cells given to the spinal cord that has been subjected to transection inside extramedullary chitosan tubes. This was compared with properties of survival and differentiation for mesenchymal originated stem cells that were injected directly to the area that was subject to transection. The extramedullary implantation of chitosan tubes that contain mesenchymal stem cells, obtained from adult human mesenchymal tissues was done right after the T8 level transection. The results obtain with this group was compared with 3 different groups that had direct stem cell injection, only planted with extramedullary chitosan tube and only had transection. Survival and differentiation properties of mesenchymal stem cells were evaluated using immunehistochemical and histopathological analyses. Axonal germination and regeneration was evaluated using confocal microscope. Functional recovery was determined by BBB scoring within the 4-week period after the trauma. The study showed that the mesenchymal stem cells given inside extramedullary chitosan tube in an acute spinal cord injury could survive. However, a significant differentiation between the functional recoveries of 4 groups was not observed.