Â鶹´«Ã½

From Valerie Argent, Stocksfield, Northumberland, UK

The possible use of stem cell therapy for treatment of Parkinson's disease is long awaited and much needed (2 December, p 8). However, I note that in the clinical trials, an immunosuppressing drug is to be used as well, as the cells are not matched to the recipient.

Previously, Â鶹´«Ã½ reported evidence that Parkinson's progression is driven by an autoimmune response attacking dopamine-producing cells (24 June, p 11).

In my experience, immunosuppression therapy has been of great benefit in reducing symptoms of Parkinson's disease, though I take this medication for sarcoidosis.