doi: 10.1080/13554790701475468
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By binding copper(II) ions, it helps regulate gene expression linked to collagen formation, angiogenesis, antioxidant defense, and tissue remodeling. The peptides small size allows it to penetrate tissues efficiently, and its copper-transfer activity underlies its reported effects on skin, hair, and wound-healing processes in laboratory models
Dietary Supplements: Some formulations may include GHK-Cu in capsule form, though injectable and topical applications remain the most effective
Patients sourcing peptides from unregulated compounding pharmacies or online vendors carry a higher contamination risk, which can produce reactions incorrectly attributed to GHK-Cu itself
Specifically, GHK activated the TGF-beta signaling pathway, which is downregulated in emphysema patients