Products with 1-2% GHK-Cu concentration in stable formulations with appropriate pH and penetration enhancers create stronger improvements more likely persisting after treatment, while lower concentrations (0.1-0.5%) or degraded products may produce subtle temporary effects disappearing quickly upon discontinuation
The expression levels of Gln transporters ASCT2 (SLC1A5), LAT1 (SLC7A5), and ASCT1 (SLC1A4) are dynamically regulated by several oncogenes driving PCa progression, including MYC, androgen receptor (AR), and mTORC1 [107,108,109]
Therefore, whether the observed increase in spare respiratory capacity reflects enhanced mitochondrial abundance, altered respiratory complex expression, or changes in mitochondrial efficiency remains to be determined
By bypassing the harsh stomach environment, more intact peptide molecules theoretically survive to reach absorptive tissues
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