J I Ueda

Summary

Affiliation: National Institute of Radiological Sciences
Country: Japan

Publications

  1. ncbi request reprint Singlet oxygen-mediated hydroxyl radical production in the presence of phenols: whether DMPO-*OH formation really indicates production of *OH?
    Jun ichi Ueda
    National Institute of Radiological Sciences, Inage Ku, Chiba shi, Japan
    Photochem Photobiol 77:165-70. 2003
  2. ncbi request reprint Autoxidation of ascorbic acid catalyzed by the copper(II) bound to L-histidine oligopeptides, (His)iGly and acetyl-(His)i Gly (i=9, 19, 29). Relationship between catalytic activity and coordination mode
    J I Ueda
    National Institute of Radiological Sciences, Chiba, Japan
    Chem Pharm Bull (Tokyo) 48:908-13. 2000
  3. ncbi request reprint Relationship between effects of phenolic compounds on the generation of free radicals from lactoperoxidase-catalyzed oxidation of NAD(P)H or GSH and their DPPH scavenging ability
    J Ueda
    National Institute of Radiological Sciences, Chiba, Japan
    Chem Pharm Bull (Tokyo) 49:299-304. 2001
  4. ncbi request reprint Reactive oxygen species scavenging ability of a new compound derived from weathered coal
    Jun ichi Ueda
    National Institute of Radiological Sciences, 9 1 Anagawa 4 chome, Inage Ku, Chiba shi 263 8555, Japan
    Spectrochim Acta A Mol Biomol Spectrosc 60:2487-92. 2004
  5. ncbi request reprint Pathophysiological significance of in vivo ESR signal decay in brain damage caused by X-irradiation. Radiation effect on nitroxyl decay of a lipophilic spin probe in the head region
    Y Miura
    Department of Bioregulation Research, National Institute of Radiological Sciences, Chiba, Japan
    Biochim Biophys Acta 1525:167-72. 2001

Detail Information

Publications5

  1. ncbi request reprint Singlet oxygen-mediated hydroxyl radical production in the presence of phenols: whether DMPO-*OH formation really indicates production of *OH?
    Jun ichi Ueda
    National Institute of Radiological Sciences, Inage Ku, Chiba shi, Japan
    Photochem Photobiol 77:165-70. 2003
    ..Phenolic compounds would participate in this reaction as electron donors but would not contribute to the direct conversion of 1O2 to *OH. Furthermore, DEPMPO did not cause the spin-trapping agent-mediated generation of *OH like DMPO did...
  2. ncbi request reprint Autoxidation of ascorbic acid catalyzed by the copper(II) bound to L-histidine oligopeptides, (His)iGly and acetyl-(His)i Gly (i=9, 19, 29). Relationship between catalytic activity and coordination mode
    J I Ueda
    National Institute of Radiological Sciences, Chiba, Japan
    Chem Pharm Bull (Tokyo) 48:908-13. 2000
    ..The Cu(II), which is complexed tightly with the terminal H2N-X-Y-His- moiety, where X and Y denote amino acids, inhibits the autoxidation, and exhibits absorption bands at 480 and 550 nm...
  3. ncbi request reprint Relationship between effects of phenolic compounds on the generation of free radicals from lactoperoxidase-catalyzed oxidation of NAD(P)H or GSH and their DPPH scavenging ability
    J Ueda
    National Institute of Radiological Sciences, Chiba, Japan
    Chem Pharm Bull (Tokyo) 49:299-304. 2001
    ..That is, phenolic compounds having weak quenching activity against DPPH may enhance the LPO/H2O2-catalyzed oxidation of NAD(P)H or GSH to generate a large amount of O2*- or GS*...
  4. ncbi request reprint Reactive oxygen species scavenging ability of a new compound derived from weathered coal
    Jun ichi Ueda
    National Institute of Radiological Sciences, 9 1 Anagawa 4 chome, Inage Ku, Chiba shi 263 8555, Japan
    Spectrochim Acta A Mol Biomol Spectrosc 60:2487-92. 2004
    ..OH from a metal-catalyzed hydroxyl radical generating system, suggesting that these molecules act as prooxidants in the presence of metal ion...
  5. ncbi request reprint Pathophysiological significance of in vivo ESR signal decay in brain damage caused by X-irradiation. Radiation effect on nitroxyl decay of a lipophilic spin probe in the head region
    Y Miura
    Department of Bioregulation Research, National Institute of Radiological Sciences, Chiba, Japan
    Biochim Biophys Acta 1525:167-72. 2001
    ..These findings suggest that the effect of X-irradiation observed by in vivo ESR is attributable not to the redox reaction of MCPROXYL in the brain but to the change of the efflux rate of the MCPROXYL from the brain...