Central nervous system uptake of intranasal glutathione in Parkinson’s disease

LKM: conception, design, and execution of clinical trial, and manuscript preparation; TJK, MER, and CCW: methodology/analysis of erythrocyte glutathione concentrations; JED: study design and manuscript preparation; EGS, TKW, and KEC: acquisition of MR image; PUDLT: execution of clinical trial, data management, and laboratory glutathione analysis; JMP: study design, MRS analysis, and manuscript preparation