This discrepancy may be associated with the heightened sensitivity of germ cells to oxidative damage and proteostasis perturbation during active proliferation, meiosis, and chromatin remodeling
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In cultured human fibroblasts and ex-vivo skin systems, GHK-Cu exposure has been associated with increased synthesis of type I collagen, elastin, and proteoglycans, and with increased expression of metalloproteinases involved in matrix turnover
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This is primarily due to L-carnitines ability to preserve muscle glycogen and use fatty acids as energy during exercise, sparing the use of amino acids, making them available for new protein synthesis to rebuild and grow muscle, per 2020 research in Molecules