Exogenic 电场能有效地加速骨头愈合并且向受伤区域通过骨头髓的提高的迁居改变间充质的干细胞(BMSC ) 。这研究试图决定下列:(1 ) 在到一个直接当前的电场(DCEF ) 的暴露之上的老鼠 BMSC (rBMSC ) 移植的方向,(2 ) 最佳的 DCEF 紧张和持续时间,并且(3 ) 在由 DCEF 导致了的 rBMSC 移植的 SDF-1/CXCR4 轴的可能的规章的角色。显示出的结果 rBMSCs 移居了到 DCEF 的积极电极,并且为 4 h 的 200 mV/mm 的 DCEF 被发现在提高 rBMSC 移植最佳。这 DCEF 力量和持续时间另外 upregulated osteoblastic 基因,包括的高山和 OCN 的表示,和 upregulated 高山和 Runx2 蛋白质的表示。而且当 CXCR4 被禁止时, rBMSC 移植部分由于 DCEF 被堵住。这些调查结果显示 DCEF 能有效地导致 rBMSC 移植。因为它支持 rBMSC 移植,增长,和 osteogenic 区别的能力,为 4 h 的 200 mV/mm 的 DCEF 被推荐。表明小径的 SDF-1/CXCR4 可以在调整 rBMSCs 的导致 DCEF 的迁居起一个重要作用。
Exogenic electric fields can effectively accelerate bone healing and remodeling through the enhanced migration of bone marrow mesenchymal stem cells (BMSCs) toward the injured area. This study aimed to determine the following: (1) the direction of rat BMSC (rBMSC) migration upon exposure to a direct current electric field (DCEF), (2) the optimal DCEF intensity and duration, and (3) the possible regulatory role of SDF-1/ CXCR4 axis in rBMSC migration as induced by DCEF. Results showed that rBMSCs migrated to the positive electrode of the DCEF, and that the DCEF of 200 mV/mm for 4 h was found to be optimal in enhancing rBMSC migration. This DCEF strength and duration also upregulated the expression of osteoblastic genes, including ALP and OCN, and upregulated the expression of ALP and Runx2 proteins. Moreover, when CXCR4 was inhibited, rBMSC migration due to DCEF was partially blocked. These findings indicated that DCEF can effectively induce rBMSC migration. A DCEF of 200 mV/mm for 4 h was recommended because of its ability to promote rBMSC migration, proliferation, and osteogenic differentiation. The SDF-1/CXCR4 signaling pathway may play an important role in regulating the DCEF-induced migration of rBMSCs.