Given the relative concentrations of different ROS, the battery of H 2 O 2 -metabolizing enzymes potentially linked to glutathione, and the marked changes in glutathione status when other H 2 O 2 -metabolizing enzymes such as catalase are down-regulated, the main focus of the following discussion concerns the enzymes that could be important in linking H 2 O 2 or related peroxides to GSH oxidation to GSSG
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[DOI] [PMC free article] [PubMed] [Google Scholar] 68.Guo JW, et al
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MMPs normally regulate collagen degradation, with MMP-1 specifically implicated in the initiation of collagen fragmentation. A 2024 study found that elevated MMP-1 levels contribute to aging skin, causing in mice: A 2016 study showed that GHK-Cu significantly increased gene expression of MMP-1 and MMP-2 at the lowest concentration. Researchers attributed this as one mechanism by which the peptide increased collagen and elastin production
