Peptides are only one piece of the puzzle
This bypasses the digestive system, allowing for faster, more efficient absorption, which can be especially beneficial when nutrient needs are high or when digestion is impaired
Researchers may be interested in a comprehensive comparison between PT-141 nasal spray vs
202,203 Essentially, the imported disulphide-containing proteins undergo cathepsin-catalysed degradation in the lysosome, leading to the formation of cystine, which is then effluxed by the cystinosin transporter into the cytosol, where it is reduced to cysteine in a process that requires NADPH, leading to the formation of oxidised glutathione
Fahey JW, Haristoy X, Dolan PM, et al
10.1074/jbc.M402096200 209 RamachandranA.LebofskyM.WeinmanS