When I used the phrase "not including PD", I just meant that PD was not one of the conditions/diseases mentioned in the video.

I think you are right to suggest that MSCs might be of benefit in the treatment of PD.

My understanding of MSCs (from the video) is that they are found throughout the body, they modulate the immune system, decrease inflammation, and stimulate regeneration. They do not transform into other types of cell. Their influence occurs via the production of cytokines and growth factors.