Because it is found in nearly every cell of the human body, researchers often call it the "master antioxidant." Its primary job is to protect your cells from oxidative stress
Opioid detoxification with delta sleep-inducing peptide: results of an open clinical trial
A method of preventing gait abnormalities in a patient with Parkinson's disease or of improving or restoring to normal the gait of a patient with Parkinson's disease, comprising the step of administering to said patient an amount of one or more hepatocyte growth factor mimics sufficient to prevent, improve or restore to normal said gait, said one or more hepatocyte growth factor mimics having a general structural formula 1 2 3 where Ri is one of an N-acyl group, a substituted or unsubstituted phenyl, a norleucine group, and an amino acid selected from tyrosine, phenylalanine, aspartic acid, arginine, isoleucine, serine, histidine, glycine, cysteine, methionine, tryptophan, lysine norvaline, ornithine, and s-benzyl cysteine

Regulation: Apart from destroying free radicals and reactive oxidants, glutathione engages in thiol protection and redox regulation of cellular thiol proteins under oxidative stress by protein S-glutathionylation, a redox-regulated post-translational thiol modification
Juluri R, Vuppalanchi R, Olson J et al (2011) Generalizability of the NASH CRN histological scoring system for nonalcoholic fatty liver disease