visual bone marrow mesenchymal stem cell transplantation in the repair of spinal cord injury
Rui-ping Zhang
Cheng Xu
Yin Liu
Jian-ding Li
Jun Xie
摘要：An important factor in improving functional recovery from spinal cord injury using stem cells is maximizing the number of transplanted cells at the lesion site. Here, we established a contusion model of spinal cord injury by dropping a weight onto the spinal cord at T7–8. Superparamagnet-ic iron oxide-labeled bone marrow mesenchymal stem cells were transplanted into the injured spinal cordvia the subarachnoid space. An outer magnetic ifeld was used to successfully guide the labeled cells to the lesion site. Prussian blue staining showed that more bone marrow mesen-chymal stem cells reached the lesion site in these rats than in those without magnetic guidance or superparamagnetic iron oxide labeling, and immunolfuorescence revealed a greater number of complete axons at the lesion site. Moreover, the Basso, Beattie and Bresnahan (BBB) locomotor rating scale scores were the highest in rats with superparamagnetic labeling and magnetic guid-ance. Our data conifrm that superparamagnetic iron oxide nanoparticles effectively label bone marrow mesenchymal stem cells and impart sufficient magnetism to respond to the external magnetic ifeld guides. More importantly, superparamagnetic iron oxide-labeled bone marrow mesenchymal stem cells can be dynamically and non-invasively trackedin vivo using magnetic resonance imaging. Superparamagnetic iron oxide labeling of bone marrow mesenchymal stem cells coupled with magnetic guidance offers a promising avenue for the clinical treatment of spinal cord injury.
机标关键词：spinal cord injurystem cell transplantationmarrow mesenchymal stem cellsbone marrowiron oxidemagnetic resonance imagingclinical treatment
论文发表日期：2015-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：8( 404-411 )
英文信息