PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 28344126-8 2017 Tempol and related nitroxides decreased NO consumption in ascorbate-replete fluids by scavenging MPO-derived ascorbyl radicals. Hydroxylamine 19-29 myeloperoxidase Homo sapiens 97-100 24566469-6 2014 421, 79-86, 2009) that nitroxides, including 4-amino-TEMPO (4-amino-2,2,6,6-tetramethylpiperidin-1-yloxyl radical), are potent inhibitors of HOCl formation by isolated MPO and activated neutrophils, with IC50 values of ~1 and ~6 microM respectively. Hydroxylamine 23-33 myeloperoxidase Homo sapiens 55-58 21749327-9 2011 After turnover, a minor fraction of MPO is irreversibly inactivated, probably due to its reaction with the oxammonium cation resulting from tempol oxidation. Hydroxylamine 107-117 myeloperoxidase Homo sapiens 36-39 19379130-0 2009 Inhibition of myeloperoxidase-mediated hypochlorous acid production by nitroxides. Hydroxylamine 71-81 myeloperoxidase Homo sapiens 14-29 19379130-5 2009 However, we show here that nitroxides can also potently inhibit MPO-mediated HOCl production, with the nitroxide 4-aminoTEMPO inhibiting HOCl production by MPO and by neutrophils with IC50 values of approx. Hydroxylamine 27-37 myeloperoxidase Homo sapiens 64-67 19379130-5 2009 However, we show here that nitroxides can also potently inhibit MPO-mediated HOCl production, with the nitroxide 4-aminoTEMPO inhibiting HOCl production by MPO and by neutrophils with IC50 values of approx. Hydroxylamine 27-36 myeloperoxidase Homo sapiens 64-67 19379130-8 2009 Inhibition was shown to involve one-electron oxidation of the nitroxides by the compound I form of MPO and accumulation of compound II. Hydroxylamine 62-72 myeloperoxidase Homo sapiens 99-102 19379130-12 2009 Overall, these data indicate that nitroxides have considerable promise as therapeutic agents for the inhibition of MPO-mediated damage in inflammatory diseases. Hydroxylamine 34-44 myeloperoxidase Homo sapiens 115-118 34085520-7 2021 Nitroxides effectively inhibited the consumption of MPO"s substrate hydrogen peroxide (H2O2) and formation of HOCl catalyzed by endothelial-localized MPO, with their efficacy dependent on both nitroxide and conjugated-polyamine structure. Hydroxylamine 193-202 myeloperoxidase Homo sapiens 52-55 15281811-0 2004 Nitroxides scavenge myeloperoxidase-catalyzed thiyl radicals in model systems and in cells. Hydroxylamine 0-10 myeloperoxidase Homo sapiens 20-35 9131488-10 1996 Differences in rates of production of hydroxylamine metabolites of the drugs by cytochrome P450 (CYP2C9), myeloperoxidase, and thyroid, roxidase, along with an inherited abnormality in detoxification of the hydroxylamines are critically important in determining individual differences in adverse reaction risk. Hydroxylamine 38-51 myeloperoxidase Homo sapiens 106-121 34085520-7 2021 Nitroxides effectively inhibited the consumption of MPO"s substrate hydrogen peroxide (H2O2) and formation of HOCl catalyzed by endothelial-localized MPO, with their efficacy dependent on both nitroxide and conjugated-polyamine structure. Hydroxylamine 193-202 myeloperoxidase Homo sapiens 150-153 3129552-4 1988 It appears as if this is due to oxidation of dapsone by myeloperoxidase to the hydroxylamine, followed by nonenzymatic oxidation of the hydroxylamine to the nitroderivative. Hydroxylamine 79-92 myeloperoxidase Homo sapiens 56-71 6305345-1 1983 When the myeloperoxidase-catalyzed peroxidation of acetoacetate proceeds in the presence of piperidinooxy free radical, methyl glyoxal is formed, and the nitroxide group is reduced to the secondary amine. Hydroxylamine 154-163 myeloperoxidase Homo sapiens 9-24