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Intraspinal Transplantation of CD34+ Human Umbilical Cord Blood Cells After Spinal Cord Hemisection Injury Improves Functional Recovery in Adult Rats

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The present study was designed to compare the functional outcome of the intraspinal transplantation of CD34+ human umbilical cord blood (CB) cells with that of human bone marrow stromal (BMS) cells in adult rats with spinal cord injury. Sixty adult Wistar rats were subjected to left spinal cord hemisection, and then divided into three groups randomly. The control group received an injection of PBS without cells, while the two other groups of rats received a transplantation of 5 × 105 CD34+ CB or BMS cells, respectively. Functional outcome was measured using the modified Tarlov score at days 1, 7, 14, 21, and 28 after transplantation. A statistically significant improvement in functional outcome and survival rate in the experimental groups of rats was observed compared with the control group. Rats that received CD34+ CB cells achieved a better improvement in functional score than those that received BMS cells at days 7 and 14 after transplantation. Histological evaluation revealed that bromodeoxyuridine (BrdU)-labeled CD34+ CB and BMS cells survived and migrated into the injured area. Some of these cells expressed glial fibriliary acidic protein (GFAP) or neuronal nuclear antigen (NeuN). Our data demonstrate for the first time that intraspinal transplantation of human CD34+ CB cells provides benefit in function recovery after spinal cord hemisection in rats and suggest that CD34+ CB cells may be an excellent choice of cells as routine starting material of allogenic and autologous transplantations for the treatment of spinal cord injury.
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Keywords: Bone marrow stromal cells; Human umbilical cord blood cells; Rats; Spinal cord injury; Stem cell plasticity; Transplantation

Document Type: Review Article

Affiliations: 1: *National Research Center for Stem Cell Engineering & Technology, State Key Laboratory of Experimental Hematology, Institute of Hematology, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, People’s Republic of China 2: †Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, People’s Republic of China

Publication date: 2004-01-01

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  • Cell Transplantation publishes original, peer-reviewed research and review articles on the subject of cell transplantation and its application to human diseases. To ensure high-quality contributions from all areas of transplantation, separate section editors and editorial boards have been established. Articles deal with a wide range of topics including physiological, medical, preclinical, tissue engineering, and device-oriented aspects of transplantation of nervous system, endocrine, growth factor-secreting, bone marrow, epithelial, endothelial, and genetically engineered cells, among others. Basic clinical studies and immunological research papers are also featured. To provide complete coverage of this revolutionary field, Cell Transplantation will report on relevant technological advances, and ethical and regulatory considerations of cell transplants. Cell Transplantation is now an Open Access journal starting with volume 18 in 2009, and therefore there will be an inexpensive publication charge, which is dependent on the number of pages, in addition to the charge for color figures. This will allow work to be disseminated to a wider audience and also entitle the corresponding author to a free PDF, as well as prepublication of an unedited version of the manuscript.

    Cell Transplantation is now being published by SAGE. Please visit their website for the most recent issues.

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