While intraspinal injection of BMSCs was reported to suppress the NF-κB and p-p38 MAPK pathways in the spinal cord after spinal cord injury (SCI) [24], it is still unknown whether the ERK and NF-κB signals, which are associated with spinal glial activation and central sensitization [25–27], are associated with the effect of peripherally applied NCSCs. This evidence concerns the gene NFKB1 and spinal cord injury.