Spinal cord injury research different types of cells. The hope is that stem cells transplanted into an injured area of the spinal cord will allow neuroregeneration. Types of cells being researched for use in SCI include embryonic stem cells, neural stem cells, mesenchymal stem cells, olfactory ensheathing cells, Schwann cells, activated macrophages, and induced pluripotent stem cells. When stem cells are injected in the area of damage in the spinal cord, they secrete neurotrophic factors, and these factors help neurons and blood vessels to grow, thus helping repair the damage. It is also necessary to recreate an environment in which stem cells will grow.
Spinal cord injury research weeks after the initial insult and includes a number of cascading processes that further harm tissues already damaged by the primary injury. It results in formation of a glial scar, which impedes axonal growth. Animals used as SCI model organisms in research include mice, rats, cats, dogs, pigs, and non-human primates; the latter are close to humans but raise ethical concerns about primate experimentation. Special devices exist to deliver blows of specific, monitored force to the spinal cord of an experimental animal. Epidural cooling saddles, surgically placed over acutely traumatized spinal cord tissue, have been used to evaluate potentially beneficial