Schwann cells （SCs） are significantly better at promoting neural stem cell （NSCs） proliferation, differentiation and synaptic formation when cocultured with NSCs in vitro, compared with cultured in a single nerve ...Schwann cells （SCs） are significantly better at promoting neural stem cell （NSCs） proliferation, differentiation and synaptic formation when cocultured with NSCs in vitro, compared with cultured in a single nerve growth factor. The present study transplanted NSCs and SCs into the brain of a rat model of Alzheimer＇s disease to investigate the effect of cotransplantation. Results show transplantation of both NSCs alone and NSCs ＋ SCs significantly promoted learning and memory functions in Alzheimer＇s disease rats, decreased glial fibrillary acidic protein and calcium binding protein S100β expression, but increased expression of the cholinergic neuron marker choline acetyl transferase mRNA. The effect of NSCs ＋ SCs cotransplantation was, however, more significant. NSCs and SCs cotransplantation significantly reduced the number of astrocytes and increased cholinergic neurons, facilitating the recovery of learning and memory function, compared with NSCs transplantation alone.展开更多
目的研究雪旺细胞(SCs)和神经干细胞(NSCs)共移植治疗大鼠帕金森病(PD)的疗效。方法18只PD模型的SD大鼠随机平均分成3组：对照组、NSCs组及共移植组。PBS、NSCs及SCs加NSCs分别植入PD大鼠右侧纹状体内。NSCs来源于孕14～16 d胎鼠中脑腹...目的研究雪旺细胞(SCs)和神经干细胞(NSCs)共移植治疗大鼠帕金森病(PD)的疗效。方法18只PD模型的SD大鼠随机平均分成3组：对照组、NSCs组及共移植组。PBS、NSCs及SCs加NSCs分别植入PD大鼠右侧纹状体内。NSCs来源于孕14～16 d胎鼠中脑腹侧的脑组织,SCs来源于1～3 d SD新生鼠的坐骨神经。结果移植10周后NSCs组及共移植组中纹状体区都出现TH染色阳性的神经元,与NSCs组相比,共移植组中的神经元体积及细胞核均较大,细胞数量多(P＜0．05)。与对照组相比,NSCs组及共移植组中大鼠的行为学均有明显的好转(P＜0．01),但NSCs组和共移植组相比,行为学的改变无明显差异(P＞0．05)。结论SCs和NSCs共移植能有效治疗PD模型大鼠。展开更多
BACKGROUND： Bone marrow stromal cells （BMSCs） or Schwann cells （SCs） transplantation alone can treat spinal cord injury. However, the transplantation either cell-type alone has disadvantages. The co-transplantati...BACKGROUND： Bone marrow stromal cells （BMSCs） or Schwann cells （SCs） transplantation alone can treat spinal cord injury. However, the transplantation either cell-type alone has disadvantages. The co-transplantation of both cells may benefit structural reconstruction and functional recovery of spinal nerves. OBJECTIVE： To verify spinal cord repair and related mechanisms after co-transplantation of BMSCs and SCs in a rat model of hemisected spinal cord injury. DESIGN, TIME AND SETTING： A randomized, controlled, animal experiment was performed at the Department of Histology and Embryology, Mudanjiang Medical College from January 2008 to May 2009. MATERIALS： Rabbit anti-S-100, glial fibrillary acidic protein, neuron specific enolase and neurofilament-200 monoclonal antibodies were purchased from Sigma, USA. METHODS： A total of 100 Wistar rats were used in a model of hemisected spinal cord injury. The rats were randomly assigned to vehicle control, SCs transplantation, BMSCs transplantation, and co-transplantation groups; 25 rats per group. At 1 week after modeling, SCs or BMSCs cultured in vitro were labeled and injected separately into the hemisected spinal segment of SCs and BMSCs transplantation groups through three injection points [5 μL （1 x 107 cells/mL）] cell suspension in each point）. In addition, a 15 μL 1 × 10^7 cells/mL SCs suspension and a 15 μL 1 × 10^7 cells/mL BMSC suspension were injected into co-transplantation group by the above method. MAIN OUTCOME MEASURES： The Basso-Beattie-Bresnahan （BBB） locomotor rating scale and somatosensory evoked potential （SEP） tests were used to assess the functional recovery of rat hind limbs following operation. Structural repair of injured nerve tissue was observed by light microscopy, electron microscopy, immunohistochemistry, and magnetic resonance imaging （MRI）. In vivo differentiation, survival and migration of BMSCs were evaluated by immunofluorescence. RESULTS： BBB scores were significantly greater in all three transp展开更多
Objective:To investigate the therapeutic effects of co-transplantation with Schwann cells（SCs） and human embryonic nerve stem cells（NSCs） on macaque Parkinson’s disease（PD）.Methods: Macaque autologous SCs and h...Objective:To investigate the therapeutic effects of co-transplantation with Schwann cells（SCs） and human embryonic nerve stem cells（NSCs） on macaque Parkinson’s disease（PD）.Methods: Macaque autologous SCs and human embryonic NSCs were adopled for the treatment of macaque PD.Results:Six months after transplantation,positron emission computerized tomography showed that <sup>18</sup>F-FP-β-CIT was significantly concentrated in the injured striatum in the cotransplanted group.Immunohistoehemieal staining of transplanted area tissue showed migration of tyrosine hydroxylase positive cells from the transplant area to the surrounding area was significantly increased in the co-transplanted group.Conclusions:Co-transplantation of SCs and NSCs could effectively cure PD in macaques.SCs harvested from the autologous peripheral nerves can avoid rejection and the ethics problems,so it is expected to be applied clinically.展开更多
基金the Science and Technology Development Foundation of Jilin Province, No. 200505204, 200705129
文摘Schwann cells （SCs） are significantly better at promoting neural stem cell （NSCs） proliferation, differentiation and synaptic formation when cocultured with NSCs in vitro, compared with cultured in a single nerve growth factor. The present study transplanted NSCs and SCs into the brain of a rat model of Alzheimer＇s disease to investigate the effect of cotransplantation. Results show transplantation of both NSCs alone and NSCs ＋ SCs significantly promoted learning and memory functions in Alzheimer＇s disease rats, decreased glial fibrillary acidic protein and calcium binding protein S100β expression, but increased expression of the cholinergic neuron marker choline acetyl transferase mRNA. The effect of NSCs ＋ SCs cotransplantation was, however, more significant. NSCs and SCs cotransplantation significantly reduced the number of astrocytes and increased cholinergic neurons, facilitating the recovery of learning and memory function, compared with NSCs transplantation alone.
文摘目的研究雪旺细胞(SCs)和神经干细胞(NSCs)共移植治疗大鼠帕金森病(PD)的疗效。方法18只PD模型的SD大鼠随机平均分成3组：对照组、NSCs组及共移植组。PBS、NSCs及SCs加NSCs分别植入PD大鼠右侧纹状体内。NSCs来源于孕14～16 d胎鼠中脑腹侧的脑组织,SCs来源于1～3 d SD新生鼠的坐骨神经。结果移植10周后NSCs组及共移植组中纹状体区都出现TH染色阳性的神经元,与NSCs组相比,共移植组中的神经元体积及细胞核均较大,细胞数量多(P＜0．05)。与对照组相比,NSCs组及共移植组中大鼠的行为学均有明显的好转(P＜0．01),但NSCs组和共移植组相比,行为学的改变无明显差异(P＞0．05)。结论SCs和NSCs共移植能有效治疗PD模型大鼠。
基金the National Natural Science Foundation of China, No. C010602the Natural Science Foundation of Heilongjiang Province, No. D200559the Scientific Research Program of Educa-tion Department of Heilong-jiang Province, No. 11511428
文摘BACKGROUND： Bone marrow stromal cells （BMSCs） or Schwann cells （SCs） transplantation alone can treat spinal cord injury. However, the transplantation either cell-type alone has disadvantages. The co-transplantation of both cells may benefit structural reconstruction and functional recovery of spinal nerves. OBJECTIVE： To verify spinal cord repair and related mechanisms after co-transplantation of BMSCs and SCs in a rat model of hemisected spinal cord injury. DESIGN, TIME AND SETTING： A randomized, controlled, animal experiment was performed at the Department of Histology and Embryology, Mudanjiang Medical College from January 2008 to May 2009. MATERIALS： Rabbit anti-S-100, glial fibrillary acidic protein, neuron specific enolase and neurofilament-200 monoclonal antibodies were purchased from Sigma, USA. METHODS： A total of 100 Wistar rats were used in a model of hemisected spinal cord injury. The rats were randomly assigned to vehicle control, SCs transplantation, BMSCs transplantation, and co-transplantation groups; 25 rats per group. At 1 week after modeling, SCs or BMSCs cultured in vitro were labeled and injected separately into the hemisected spinal segment of SCs and BMSCs transplantation groups through three injection points [5 μL （1 x 107 cells/mL）] cell suspension in each point）. In addition, a 15 μL 1 × 10^7 cells/mL SCs suspension and a 15 μL 1 × 10^7 cells/mL BMSC suspension were injected into co-transplantation group by the above method. MAIN OUTCOME MEASURES： The Basso-Beattie-Bresnahan （BBB） locomotor rating scale and somatosensory evoked potential （SEP） tests were used to assess the functional recovery of rat hind limbs following operation. Structural repair of injured nerve tissue was observed by light microscopy, electron microscopy, immunohistochemistry, and magnetic resonance imaging （MRI）. In vivo differentiation, survival and migration of BMSCs were evaluated by immunofluorescence. RESULTS： BBB scores were significantly greater in all three transp
基金supported by the Hainan Natural Science Foundation, NO.310147
文摘Objective:To investigate the therapeutic effects of co-transplantation with Schwann cells（SCs） and human embryonic nerve stem cells（NSCs） on macaque Parkinson’s disease（PD）.Methods: Macaque autologous SCs and human embryonic NSCs were adopled for the treatment of macaque PD.Results:Six months after transplantation,positron emission computerized tomography showed that <sup>18</sup>F-FP-β-CIT was significantly concentrated in the injured striatum in the cotransplanted group.Immunohistoehemieal staining of transplanted area tissue showed migration of tyrosine hydroxylase positive cells from the transplant area to the surrounding area was significantly increased in the co-transplanted group.Conclusions:Co-transplantation of SCs and NSCs could effectively cure PD in macaques.SCs harvested from the autologous peripheral nerves can avoid rejection and the ethics problems,so it is expected to be applied clinically.
