GHK-Cu focuses on copper-mediated collagen synthesis and antioxidant activity valuable for skin and wound research, but absent the vascular and neuroprotective dimensions of the compounds profile
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Dupilumab blocks IL-4/IL-13 signaling but does not directly repair the skin barrier or restore antimicrobial peptide levels
Triggers of elevated ceramide levels comprise hyperosmotic shock [122], secreted sphingomyelinases (SMases) during inflammation [125], sepsis [126] or severe coronavirus disease 2019 (COVID-19) [127], Clostridium perfringens epsilon toxin [128], and platelet-activating factor [129]
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Any free radical that can extract H atoms from oxidizable substrates (such as PUFAs) can initiate lipid peroxidation