Im not sure if this is a new find. Doctors in Japan and Karolinska Institutet in sweden did something similar when they took samples from patients who received cord cell transplants. The findings suggested suggested that brain function can be improved using mesenchymal cells that secrete growth factors and cytokines which activate a mechanism that leads to improved neuro function,neurogenesis and angiogenesis. The issue is that the results should be able to be verified with long-term follow ups to evaluate functional outcomes and possible harmful effects.
http://www.ncbi.nlm.nih.gov/pubmed/11988611
https://clinicaltrials.gov/ct2/results?term=stem+cells+AND+s...
http://stemcellthailand.org/therapies/stroke-ischemic-hemorr...