I don't know if this will be helpful for MS sufferers, but I thought it looked interesting.
Dietary chelators as antioxidant enzyme mimetics: implications for dietary intervention in neurodegenerative diseases.
Behav Pharmacol. 2006 Sep;17(5-6):425-430.
Hague T, Andrews PL, Barker J, Naughton DP.
School of aLife Sciences bPharmacy and Chemistry, Kingston University, Kingston-upon-Thames, Surrey cDivision of Basic Medical Sciences, St George's University of London, London, UK.
Following recent reviews on the role of metal ions in ...