Cytoprotective effect of Valeriana officinalis extract on an in vitro experimental model of Parkinson disease - de Oliveria, D M; Barreto, G; De Andrade, D V; Saraceno, E; Aon-Bertolino, L; Capani, F; Dos Santos El Bachá, R; Giraldez, L D (Neurochem Res, 2009)