Tumor necrosis factor is elevated in progressive multiple sclerosis and causes excitotoxic neurodegeneration. Rossi S, Motta C, Studer V, Barbieri F, Buttari F, Bergami A, Sancesario G, Bernardini S, De Angelis G, Martino G, et al. Mult Scler. 2013 Jul 25. PMID: 23886826. Abstract CommentRecommendBookmarkWatch