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- W2078785583 abstract "Copper mobilization and subsequent redox reactions have been implicated in the pathogenesis of numerous inflammation-based diseases. Reduction of the cupric ion (Cu2+) to the cuprous ion (Cu+) is necessary for the production of copper-induced reactive oxygen species (ROS). Peptides, designed to bind both Cu2+ and Cu+ and have the ability to prevent copper redox reactions, were studied. The peptides DAHGMTCANC and DAHKGMTCANC were effective at preventing the formation of thiobarbituric acid-reactive species (TBARS) in a copper/ascorbate solution at a 1:1 peptide/Cu ratio. This was observed in the reducing potential of the copper/ascorbate solutions containing these peptides at a 1:1 ratio based on oxidation–reduction potential (ORP) measurements. The peptide DAHGMTCARC was effective at a 2:1 ratio, but not at a 1:1 ratio in which an increase in the oxidation potential was observed. This suggests that a positively charged amino acid such as arginine (R) in the Cu+-binding motif interferes with metal chelation. All peptides tested were effective at preventing IL-8 release from phorbol 12-myristate 13-acetate (PMA)/copper-stimulated human umbilical vein endothelial cells (HUVEC). The use of Cu+/Cu2+-binding peptides might be beneficial in the treatment of ROS-related diseases associated with copper." @default.
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- W2078785583 date "2007-06-01" @default.
- W2078785583 modified "2023-10-18" @default.
- W2078785583 title "Combined cupric- and cuprous-binding peptides are effective in preventing IL-8 release from endothelial cells and redox reactions" @default.
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- W2078785583 doi "https://doi.org/10.1016/j.bbrc.2007.03.182" @default.
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