Dr. Joseph C. Maroon is a neurosurgeon and a professor at the University of Pittsburgh Medical Center. His research on Alzheimers and Parkinsons disease focuses on the role of oxidative stress and Bioconjugates of curcumin display improved protection against glutathione depletion mediated oxidative stress in a dopaminergic neuronal cell line: Implications for Parkinson's disease ScienceDirect Frontiers Glutathione and neurodegenerative diseases: immunopharmacological implications Nexus between mitochondrial function, iron, copper and glutathione in Parkinson's disease ScienceDirect