Glutathione is a powerful tripeptide made up of three key amino acids: glutamine, glycine, and cysteine
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On the other hand, with the introduction of KGN or TA, the degeneration of cartilage tissue caused by the defects was partially inhibited by the PKG and PTA hydrogels and some calcific tissue and cartilage wear could be observed macroscopically
Side effects of 4-week oral glutathione (1 g/day) in clinical trials included [91]: Flatulence Loose stools Flushing Weight gain Side effects of higher doses (up to around 150 mg/kg/day) in people with cystic fibrosis included chest tightness, diarrhea, and fever
The same reaction can occur on protein cysteine, and the formed GSNO group functions as important intermediate in NO metabolism, a critical player in fulfilling the biolgogical function of NO in signal transduction ( S -glutathionylation (Zeng et al., 2001) or thanks to catalytic activity of GGT generate S-nitrosocysteinylglycine that in turn can be cleaved by a membrane dipeptidase thus forming S -nitrosocysteine (S-NO)