**Brain Mitochondrial Dysfunction and Complex I Syndrome in Parkinson´s Disease**

Laura B. Valdez1, Manuel J. Bandez2, Ana Navarro2† and Alberto Boveris1 *1Laboratory of Free Radical Biology, School of Pharmacy and Biochemistry, University of Buenos Aires, 2Department of Biochemistry and Molecular Biology, School of Medicine, University of Cádiz, 1Argentina 2Spain* 
