Progressive depletion of cellular glutathione can also be used as a mechanism by some viruses to control their replication cycle.
Additionally, tryptophan metabolites regulate the interaction between intestinal commensal bacteria and the intestinal barrier by activating nuclear receptors, including the aryl hydrocarbon receptor (AhR) and the pregnane X receptor (PXR), further maintaining intestinal homeostasis and host health
[PubMed] [Google Scholar] 34.Thimmulappa RK, Lee H, Rangasamy T, et al
2 A separate 2-week RCT testing three GlyNAC dose levels in 114 healthy older adults found good tolerability but no significant improvement in the primary endpoint (GSH:GSSG ratio) in the full study population, highlighting that responses may depend on baseline oxidative stress levels and study duration
Glutathione (L--glutamyl-L-cysteinyl glycine
[Abstract] J Exp Clin Cancer Res