Author/Authors :
-، - نويسنده Research Center of Nervous System Stem Cells, Department of Anatomy, Semnan University of Medical Sciences, Semnan, Iran Safari, Manouchehr , -، - نويسنده Research Center of Nervous System Stem Cells, Department of Anatomy, Semnan University of Medical Sciences, Semnan, Iran Jafari, Behnaz , -، - نويسنده Research Center of Nervous System Stem Cells, Department of Anatomy, Semnan University of Medical Sciences, Semnan, Iran Zarbakhsh, Sam , -، - نويسنده Research Center of Nervous System Stem Cells, Department of Anatomy, Semnan University of Medical Sciences, Semnan, Iran Sameni, Hamidreza , -، - نويسنده Department of Physiology, Semnan University of Medical Sciences, Semnan, Iran Vafaei, Abbas Ali , -، - نويسنده Research Center of Nervous System Stem Cells, Department of Anatomy, Semnan University of Medical Sciences, Semnan, Iran Khan Mohammadi, Nasrin , -، - نويسنده Department of Anatomy, AJA University of Medical Sciences, Tehran, Iran Ghahari, Laya
Abstract :
Objective(s): Granulocyte-colony stimulating factor (G-CSF) is used in clinical practice for the treatment of neutropenia and to stimulate generation of hematopoietic stem cells in bone marrow donors. In the present study, the ability of G-CSF in mobilizing exogenous bone marrow stem cells (BMSCs) from peripheral blood into the brain was tested. We for the first time injected a small amount of BMSCs through the tail vein. Materials and Methods: We choose 25 male Wistar rats (200–250 g) were lesioned by 6-OHDA injected into the left substantia nigra, pars compacta (SNpc). G-CSF (70 µg/kg/day) was given from the 7th day after lesion for five days. The BMSCs (2×105) were injected through the dorsal tail vein on the 7th day after lesion. Results:The number of rotations was significantly lower in the stem cell therapy group than in the control group. In the third test in the received G-CSF and G-CSF+stem cells groups, animals displayed significant behavioral recovery compared with the control group (P<0.05). There was a significant difference in the average of dopaminergic neurons in SNpc between the control group and G-CSF and G-CS+stem cells groups. We didnʹt detect any labeling stem cells in SNpc. Conclusion: G-CSF canʹt mobilize low amounts of exogenous BMSCs from the blood stream to injured SNpc. But G-CSF (70 µg/kg) is more neuroprotective than BMSCs (2×105 number of BMSCs). Results of our study suggest that G-CSF alone is more neuroprotective than BMSCs.
