what is the main function of glutathione (GSH), a powerful intracellular antioxidant, plays a The Clinical Role of Glutathione:

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Gene Expression Regulation: Research using gene array analysis has reported that GHK-Cu influences the expression of over 4,000 human genes in cellular models including broad upregulation of tissue repair, antioxidant defence, and anti-inflammatory genes, and downregulation of genes associated with inflammation and oxidative stress making it one of the most extensively gene-profiled small peptides in biomedical research

doi: 10.1097/01.ju.0000074870.54671.98

Zhu JR, Bai J, Cai NS, Tang B, Fan WH, Guo JZ,

Antioxidants (2021)

Thus, early placental development may be affected through dysregulated vascular development and function secondary to NAD(P)H oxidase-mediated altered gene expression [48, 213]