The Dual Role of Astrocytes in CNS Homeostasis and Dysfunction Glutathione supplement effects on body production and potential health implications Mitochondrial dysregulation occurs early in ALS motor cortex with TDP 43 pathology and suggests maintaining NAD+ balance as a therapeutic strategy Scientific Reports Amyotrophic Lateral Sclerosis ALS Life Extension L Glutathione reduced (GSH) Antioxidant MedChemExpress