1. From the Department of Neurology (P.K, M.K.S., F.F., G.S., C.K.) and Institute of Clinical Biochemistry and Pathobiochemistry (A.Z.), University Clinics Würzburg, Würzburg, Germany; and Institute of Pharmacology and Toxicology (K.L) and the Rudolf Virchow Center, Deutsche Forschungsgemeinschaft Research Center for Experimental Biomedicine (B.N.), University of Würzburg, Würzburg, Germany.