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Loren Pickart, who found that it caused older human liver tissue to produce proteins more characteristic of younger tissue.2 3 This resulted in GHK being originally described, specifically, as a liver cell growth factor
Collagen organization and cross-linking, which determine the ultimate strength and resilience of repaired tissue, develop over 6 to 12 weeks or longer
A., & Adebayo, J
Arch Physiol Biochem 113(45):234258 Aoyama K, Nakaki T (2015) Glutathione in cellular redox homeostasis: association with the excitatory amino acid carrier 1 (EAAC1)
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The peptide has also been investigated as a regulator of the sleep cycle, as it increases levels of melatonin and endogenous gonadotropic hormones (FSG, LG, prolactin), which play a role in reproductive function but naturally decline with age [8]
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