Phosphodiesterase 5 inhibition at disease onset prevents experimental autoimmune encephalomyelitis progression through immunoregulatory and neuroprotective actions. Pifarré P, Gutierrez-Mecinas M, Prado J, Usero L, Roura-Mir C, Giralt M, Hidalgo J, Garcia A Exp Neurol. 2013 Nov 7. PMID: 24211383. Abstract CommentRecommendBookmarkWatch