GLUTATHIONE IMPORT TO MITOCHONDRIA As indicated above, despite the fact that the concentration of mGSH is high, GSH is not synthesized de novo in the mitochondrial matrix, as this organelle lacks the enzymes required for GSH synthesis
It supplies cysteine, which can be a rate-limiting amino acid in glutathione synthesis
Several individual factors, such as age, sex, race, genetic polymorphisms, and metabolic differences in pharmacodynamics/pharmacokinetics can explain the large inter-individual variability of OINV onset (39)
Topical/cosmetic GHK-Cu Human studies on GHK-Cu have primarily focused on the topical route of administration
Salamone JD, Correa M
For hair-specific applications, some protocols combine systemic subcutaneous GHK-Cu with direct scalp delivery via mesotherapy, injecting diluted GHK-Cu solution directly into the scalp to maximize follicle-level exposure alongside systemic administration