Glutathione S transferase: A keystone in Parkinson's disease pathogenesis and therapy ScienceDirect Targeting the Cysteine Redox Proteome in Parkinson's Disease: The Role of Glutathione Precursors and Beyond 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 GHK Cu Peptide Skin Cream Levers.Health Evolving Landscape of Parkinson's Disease Research: Challenges and Perspectives ACS Omega