Updated on 2024.12.19
researchmap
ORCID iD iconorcid.org/0000-0001-9204-0664

Top Page

P A P E R S
  1. Redox Behavior of Active Aldehydes Derived from Thiamin Coenzyme Analogs
    Ikuo Nakanishi, Shinobu Itoh, Tomoyoshi Suenobu, Hiroo Inoue, and Shunichi Fukuzumi
    Chem. Lett., 26 (8), 707-708 (1997).
    DOI: 10.1246/cl.1997.707
    Released on August 5, 1997
  2. Electron Transfer Properties of Active Aldehydes Derived from Thiamin Coenzyme Analogues
    Ikuo Nakanishi, Shinobu Itoh, Tomoyoshi Suenobu, and Shunichi Fukuzumi
    Chem. Commun., 1997 (19), 1927-1928 (1997).
    DOI: 10.1039/a704559j
    Released on November 19, 1997
  3. Direct Observation of Radical Intermediates While Investigating the Redox Behavior of Thiamin Coenzyme Models
    Ikuo Nakanishi, Shinobu Itoh, Tomoyoshi Suenobu, and Shunichi Fukuzumi
    Angew. Chem., 110 (7), 1040-1042 (1998); Angew. Chem., Int. Ed., 37 (7), 992-994 (1998).
    DOI: 10.1002/(SICI)1521-3773(19980420)37:7<992::AID-ANIE992>3.0.CO;2-P
    PMID: 29711481
    Released on April 20, 1998
  4. Formation of Radical Anions in the Reaction of p-Benzoquinone and C60 with Alkoxide Anions
    Shunichi Fukuzumi, Ikuo Nakanishi, Junichi Maruta, Tomohiro Yorisue, Tomoyoshi Suenobu, Shinobu Itoh, Ryuichi Arakawa, and Karl M. Kadish
    J. Am. Chem. Soc., 120 (27), 6673-6680 (1998).
    DOI: 10.1021/ja980615k
    Released on June 24, 1998
  5. Electron-Transfer Kinetics for Generation of Organoiron(IV) Porphyrins and the Iron(IV) Porphyrin pai Radical Cations
    Shunichi Fukuzumi, Ikuo Nakanishi, Keiko Tanaka, Tomoyoshi Suenobu, Alain Tabard, Roger Guilard, Eric Van Caemelbecke, and Karl M. Kadish
    J. Am. Chem. Soc., 121 (4), 785-790 (1999).
    DOI: 10.1021/ja982136r
    Released on January 8, 2999
  6. Electron-Transfer Properties of C60 and tert-Butyl-C60 Radical
    Shunichi Fukuzumi, Ikuo Nakanishi, Tomoyoshi Suenobu, and Karl M. Kadish
    J. Am. Chem. Soc., 121 (14), 3468-3474 (1999).
    DOI: 10.1021/ja9838615
    Released on March 24, 1999
  7. Decreased Electron Transfer Rates of Manganese Porphyrins with Conformational Distortions of the Macrocycle
    Shunichi Fukuzumi, Ikuo Nakanishi, Jean-Michel Barbe, Roger Guilard, Eric Van Caemelbecke, Ning Guo, and Karl M. Kadish
    Angew. Chem., 111 (7), 1017-1019 (1999); Angew. Chem., Int. Ed., 38 (7), 964-966 (1999).
    DOI: 10.1002/(SICI)1521-3773(19990401)38:7<964::AID-ANIE964>3.0.CO;2-O
    PMID: 29711856
    Released on March 26, 1999
  8. Synthesis and Electrochemical Studies of a Series of Fluorinated Dodecaphenylporphyrins
    Karl M. Kadish, Eric Van Caemelbecke, Francis D'Souza, Min Lin, Daniel J. Nurco, Craig J. Medforth, Timothy P. Forsyth, B始仕icte Krattinger, Kevin M. Smith, Shunichi Fukuzumi, Ikuo Nakanishi, and John A. Shelnutt
    Inorg. Chem., 38 (9), 2188-2198 (1999).
    DOI: 10.1021/ic9811695
    PMID: 11671005
    Released on April 14, 1999
  9. Electron-Transfer Properties of Active Aldehydes of Thiamin Coenzyme Models, and Mechanism of Formation of the Reactive Intermediates
    Ikuo Nakanishi, Shinobu Itoh, and Shunichi Fukuzumi
    Chem. - Eur. J., 5 (10), 2810-2818 (1999).
    DOI: 10.1002/(SICI)1521-3765(19991001)5:10<2810::AID-CHEM2810>3.0.CO;2-F
    Released on September 24, 1999
  10. Migration Reactivities of sigma-Bonded Ligands of Organoiron and Organocobalt Porphyrins Depending on Different High Oxidation States
    Shunichi Fukuzumi, Ikuo Nakanishi, Keiko Tanaka, Alain Tabard, Roger Guilard, Eric Van Caemelbecke, and Karl M. Kadish
    Inorg. Chem., 38 (22), 5000-5006 (1999).
    DOI: 10.1021/ic990324s
    PMID: 11671243
    Released on October 14, 1999
  11. Multielectron Oxidation of Anthracenes with a One-Electron Oxidant via Water-Accelerated Electron-Transfer Disproportionation of the Radical Cations as the Rate-Determining Step
    Shunichi Fukuzumi, Ikuo Nakanishi, and Keiko Tanaka
    J. Phys. Chem. A, 103 (50), 11212-11220 (1999).
    DOI: 10.1021/jp990541e
    Released on November 25, 1999
  12. Base Control of Electron-Transfer Reactions of Manganese(III) Porphyrins
    Ikuo Nakanishi, Shunichi Fukuzumi, Jean-Michel Barbe, Roger Guilard, and Karl M. Kadish
    Eur. J. Inorg. Chem., 2000 (7), 1557-1562 (2000).
    DOI: 10.1002/1099-0682(200007)2000:7<1557::AID-EJIC1557>3.0.CO;2-9
    Released on July 4, 2000
  13. Hydroxylation of Nitrated Naphthalenes with KO2/Crown Ether
    Kiyoshi Fukuhara, Yukie Hara, Ikuo Nakanishi, and Naoki Miyata
    Chem. Pharm. Bull., 48 (10), 1532-1535 (2000). Open access
    DOI: 10.1248/cpb.48.1532
    PMID: 11045464
    Released on October 1, 2000
  14. Reactive Species Responsible for Biological Actions of Photoexcited Fullerenes
    Naoki Miyata, Yoko Yamakoshi, and Ikuo Nakanishi
    Yakugaku Zasshi, 120 (10), 1007-1016 (2000). Open access
    DOI: 10.1248/yakushi1947.120.10_1007
    PMID: 11082711
    Released on October 1, 2000
  15. Superoxide Anion Generation via Electron-Transfer Oxidation of Catechin Dianion by Molecular Oxygen in an Aprotic Medium
    Ikuo Nakanishi, Kiyoshi Fukuhara, Kei Ohkubo, Tomokazu Shimada, Hisao Kansui, Masaaki Kurihara, Shiro Urano, Shunichi Fukuzumi, and Naoki Miyata
    Chem. Lett., 30 (11), 1152-1153 (2001).
    DOI: 10.1246/cl.2001.1152
    Released on August 13, 2001
  16. DNA Damage Caused by Photosensitizers
    Ikuo Nakanishi and Naoki Miyata
    Environ. Mutagen Res., 23 (2), 65-71 (2001).
    Released on October 20, 2001
  17. DNA Cleavage via Superoxide Anion Formed in Photoinduced Electron Transfer from NADH to gamma-Cyclodextrin-Bicapped C60 in an Oxygen-Saturated Aqueous Solution
    Ikuo Nakanishi, Shunichi Fukuzumi, Toshifumi Konishi, Kei Ohkubo, Mamoru Fujitsuka, Osamu Ito, and Naoki Miyata
    J. Phys. Chem. B, 106 (9), 2372-2380 (2002).
    DOI: 10.1021/jp013215j
    Released on February 12, 2002
  18. Enhanced Radical-Scavenging Activity of a Planar Catechin Analogue
    Kiyoshi Fukuhara, Ikuo Nakanishi, Hisao Kansui, Etsuko Sugiyama, Mitsuhiro Kimura, Tomokazu Shimada, Shiro Urano, Kentaro Yamaguchi, and Naoki Miyata
    J. Am. Chem. Soc., 124 (21), 5952-5953 (2002).
    DOI: 10.1021/ja0178259
    PMID: 12022823
    Released on May 7, 2002
  19. Effects of Magnesium Ion on Kinetic Stability and Spin Distribution of Phenoxyl Radical Derived from a Vitamin E Analogue: Mechanistic Insight into Antioxidative Hydrogen Transfer Reaction of Vitamin E
    Ikuo Nakanishi, Kiyoshi Fukuhara, Tomokazu Shimada, Kei Ohkubo, Yuko Iizuka, Keiko Inami, Masataka Mochizuki, Shiro Urano, Shinobu Itoh, Naoki Miyata, and Shunichi Fukuzumi
    J. Chem. Soc., Perkin Trans. 2, 2002 (9), 1520-1524 (2002).
    DOI: 10.1039/b205380b
    Released on July 15, 2002
  20. Direct Detection of Superoxide Anion Generated in C60-Photosensitized Oxidation of NADH and an Analogue by Molecular Oxygen
    Ikuo Nakanishi, Kei Ohkubo, Shunsuke Fujita, Shunichi Fukuzumi, Toshifumi Konishi, Mamoru Fujitsuka, Osamu Ito, and Naoki Miyata
    J. Chem. Soc., Perkin Trans. 2, 2002 (11), 1829-1833 (2002).
    DOI: 10.1039/b206887g
    Released on September 26, 2002
  21. Effects of Metal Ions Distinguishing between One-Step Hydrogen- and Electron-Transfer Mechanisms for the Radical-Scavenging Reaction of (+)-Catechin
    Ikuo Nakanishi, Kentaro Miyazaki, Tomokazu Shimada, Kei Ohkubo, Shiro Urano, Nobuo Ikota, Toshihiko Ozawa, Shunichi Fukuzumi, and Kiyoshi Fukuhara
    J. Phys. Chem. A, 106 (46), 11123-11126 (2002).
    DOI: 10.1021/jp026190c
    Released on October 19, 2002
  22. A Planar Catechin Analogue as a Promising Antioxidant with Reduced Prooxidant Activity
    Kiyoshi Fukuhara, Ikuo Nakanishi, Tomokazu Shimada, Kei Ohkubo, Kentaro Miyazaki, Wataru Hakamata, Shiro Urano, Nobuo Ikota, Toshihiko Ozawa, Haruhiro Okuda, Naoki Miyata, and Shunichi Fukuzumi
    Chem. Res. Toxicol., 16 (1), 81-86 (2003).
    DOI: 10.1021/tx025581f
    PMID: 12693034
    Released on December 18, 2002
  23. Efficient Radical Scavenging Ability of Artepillin C, a Major Component of Brazilian Propolis, and the Mechanism
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Kentaro Miyazaki, Haruko Yakumaru, Shiro Urano, Haruhiro Okuda, Jun-Ichi Ueda, Toshihiko Ozawa, Kiyoshi Fukuhara, Shunichi Fukuzumi, Hideko Nagasawa, Hitoshi Hori, and Nobuo Ikota
    Org. Biomol. Chem., 1 (9), 1452-1454 (2003).
    DOI: 10.1039/b302098c
    PMID: 12926271
    Released on April 3, 2003
  24. Kinetic Study of the Electron-Transfer Oxidation of the Phenolate Anion of a Vitamin E Model by Molecular Oxygen Generating Superoxide Anion in an Aprotic Medium
    Ikuo Nakanishi, Kentaro Miyazaki, Tomokazu Shimada, Yuko Iizuka, Keiko Inami, Masataka Mochizuki, Shiro Urano, Haruhiro Okuda, Toshihiko Ozawa, Shunichi Fukuzumi, Nobuo Ikota, and Kiyoshi Fukuhara
    Org. Biomol. Chem., 1 (22), 4085-4088 (2003).
    DOI: 10.1039/b306758k
    PMID: 14664398
    Released on October 13, 2003
  25. A Planar Catechin Analogue Having a More Negative Oxidation Potential than (+)-Catechin as an Electron-Transfer Antioxidant against a Peroxyl Radical
    Ikuo Nakanishi, Kei Ohkubo, Kentaro Miyazaki, Wataru Hakamata, Shiro Urano, Toshihiko Ozawa, Haruhiro Okuda, Shunichi Fukuzumi, Nobuo Ikota, and Kiyoshi Fukuhara
    Chem. Res. Toxicol., 17 (1), 26-31 (2004).
    DOI: 10.1021/tx034134c
    PMID: 14727916
    Released on December 3, 2003
  26. EPR Study on Stable Magnesium Complexes of the Phenoxyl Radicals Derived from a Vitamin E Model and Its Deuterated Derivatives
    Ikuo Nakanishi, Shigenobu Matsumoto, Kei Ohkubo, Kiyoshi Fukuhara, Haruhiro Okuda, Keiko Inami, Masataka Mochizuki, Toshihiko Ozawa, Shinobu Itoh, Shunichi Fukuzumi, and Nobuo Ikota
    Bull. Chem. Soc. Jpn., 77 (9), 1741-1744 (2004).
    DOI: 10.1246/bcsj.77.1741
    Released on September 10, 2004
  27. Water-Accelerated Radical-Scavenging Reaction of (+)-Catechin in an Aprotic Medium
    Ikuo Nakanishi, Tomonori Kawashima, Kiyoshi Fukuhara, Hideko Kanazawa, Haruhiro Okuda, Shunichi Fukuzumi, Toshihiko Ozawa, and Nobuo Ikota
    ITE Lett. Batt. New Tech. Med., 5 (6), 585-588 (2004).
    Released on December 31, 2004
  28. Electron-Tansfer Mechanism in Radical-Scavenging Reactions by a Vitamin E Model in a Protic Medium
    Ikuo Nakanishi, Tomonori Kawashima, Kei Ohkubo, Hideko Kanazawa, Keiko Inami, Masataka Mochizuki, Kiyoshi Fukuhara, Haruhiro Okuda, Toshihiko Ozawa, Shinobu Itoh, Shunichi Fukuzumi, and Nobuo Ikota
    Org. Biomol. Chem., 3 (4), 626-629 (2005). Open access
    DOI: 10.1039/b416572a
    PMID: 15703798
    Released on January 11, 2005
  29. Hydroxyl Radical Generation via Photoreduction of a Simple Pyridine N-Oxide by an NADH Analogue
    Ikuo Nakanishi, Chiho Nishizawa, Kei Ohkubo, Keizo Takeshita, Kazuo T. Suzuki, Toshihiko Ozawa, Sidney M. Hecht, Masayuki Tanno, Shoko Sueyoshi, Naoki Miyata, Haruhiro Okuda, Shunichi Fukuzumi, Nobuo Ikota, and Kiyoshi Fukuhara
    Org. Biomol. Chem., 3 (18), 3263-3265 (2005).
    DOI: 10.1039/b509447j
    PMID: 16132086
    Released on October 2, 2005
  30. Structural Basis for DNA-Cleaving Activity of Resveratrol in the Presence of Cu(II)
    Kiyoshi Fukuhara, Maki Nagakawa, Ikuo Nakanishi, Kei Ohkubo, Kohei Imai, Shiro Urano, Shunichi Fukuzumi, Toshihiko Ozawa, Nobuo Ikota, Masataka Mochizuki, Naoki Miyata, and Haruhiro Okuda
    Bioorg. Med. Chem., 14 (5), 1437-1443 (2006).
    DOI: 10.1016/j.bmc.2005.09.070
    PMID: 16249091
    Released on October 24, 2005
  31. Comparison of Stable Nitroxide, 3-Substituted 2,2,5,5-Tetramethylpyrrolidine-N-oxyls, with Respect to Protection from Radiation, Prevention of DNA Damage, and Distribution in Mice
    Kazunori Anzai, Megumi Ueno, Akira Yoshida, Masako Furuse, Winn Aung, Ikuo Nakanishi, Takashi Moritake, Keizo Takeshita, and Nobuo Ikota
    Free Radical Biol. Med., 40 (7), 1170-1178 (2006).
    DOI: 10.1016/j.freeradbiomed.2005.11.006
    PMID: 16545684
    Released on December 9, 2005
  32. Reaction of para-Hydroxybenzoic Acid Esters with Singlet Oxygen in the Presence of Glutathione Produces Glutathione Conjugates of Hydroquinone, Potent Inducers of Oxidative Stress
    Chiho Nishizawa, Keizo Takeshita, Jun-Ichi Ueda, Ikuo Nakanishi, Kazuo T. Suzuki, and Toshihiko Ozawa
    Free Radical Res., 40 (3), 233-240 (2006).
    DOI: 10.1080/10715760500485036
    PMID: 16484039
    Released on March, 2006
  33. Planar Catechin Analogues with Alkyl Side Chains, a Potent Antioxidant and an alpha-Glucosidase Inhibitor
    Wataru Hakamata, Ikuo Nakanishi, Yu Masuda, Takehiko Shimizu, Hajime Higuchi, Yuriko Nakamura, Shinichi Saito, Shiro Urano, Tadatake Oku, Toshihiko Ozawa, Nobuo Ikota, Naoki Miyata, Haruhiro Okuda, and Kiyoshi Fukuhara
    J. Am. Chem. Soc., 128 (20), 6524-6525 (2006).
    DOI: 10.1021/ja057763c
    PMID: 16704229
    Released on May 3, 2006
  34. Drastic Effect of Several Caffeic Acid Derivatives on the Induction of Heme Oxygenase-1 Expression Revealed by Quantitative Real-Time RT-PCR
    Keiko Suzuki, Izumi Tanaka, Ikuo Nakanishi, Ayako Kurematsu, Haruko Yakumaru, Nobuo Ikota, and Hiroshi Ishihara
    Biofactors, 28 (3-4), 151-158 (2006).
    DOI: 10.1002/biof.5520280301
    PMID: 17473375
    Released in 2006
  35. Scandium Ion-Accelerated Scavenging Reaction of Cumylperoxyl Radical by a Cyclic Nitroxyl Radical via Electron Transfer
    Ikuo Nakanishi, Kumiko Kawaguchi, Kei Ohkubo, Tomonori Kawashima, Sushma Manda, Hideko Kanazawa, Keizo Takeshita, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, and Nobuo Ikota
    Chem. Lett., 36 (3), 378-379 (2007).
    DOI: 10.1246/cl.2007.378
    Released on February 3, 2007
  36. Effect of Solvent Polarity on the One-Electron Oxidation of Cyclic Nitroxyl Radicals
    Sushma Manda, Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Ken-ichiro Matsumoto, Toshihiko Ozawa, Shunichi Fukuzumi, Nobuo Ikota, and Kazunori Anzai
    Chem. Lett., 36 (7), 914-915 (2007).
    DOI: 10.1246/cl.2007.914
    Released on June 23, 2007
  37. A Long-Lived o-Semiquinone Radical Anion is Formed from N-beta-alanyl-5-S-glutathionyl-3,4-dihydroxyphenylalanine (5-S-GAD), an Insect-derived Antibacterial Substance
    Nobuko Akiyama, Ikuo Nakanishi, Kei Ohkubo, Kazue Satoh, Koichiro Tsuchiya, Takeshi Nishikawa, Shunichi Fukuzumi, Nobuo Ikota, Toshihiko Ozawa, Masafumi Tsujimoto, and Shunji Natori
    J. Biochem., 142 (1), 41-48 (2007).
    DOI: 10.1093/jb/mvm101
    PMID: 17684029
    Released on July 1, 2007
  38. Involvement of Electron Transfer in the Radical-Scavenging Reaction of Resveratrol
    Ikuo Nakanishi, Tomokazu Shimada, Kei Ohkubo, Sushma Manda, Takehiko Shimizu, Shiro Urano, Haruhiro Okuda, Naoki Miyata, Toshihiko Ozawa, Kazunori Anzai, Shunichi Fukuzumi, Nobuo Ikota, and Kiyoshi Fukuhara
    Chem. Lett., 36 (10), 1276-1277 (2007).
    DOI: 10.1246/cl.2007.1276
    Released on September 22, 2007
  39. Nitroxyl Radicals: Electrochemical Redox Behaviour and Structure-Activity Relationships
    Sushma Manda, Ikuo Nakanishi, Kei Ohkubo, Haruko Yakumaru, Ken-ichiro Matsumoto, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi, and Kazunori Anzai
    Org. Biomol. Chem., 5 (24), 3951-3955 (2007).
    DOI: 10.1039/b714765a
    PMID: 18043799
    Released on October 31, 2007
    OBC Inside Cover
  40. Enhanced Radical-Scavenging Activity of Naturally-Oriented Artepillin C Derivatives
    Sushma Manda, Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Tomonori Kawashima, Kiyoshi Fukuhara, Haruhiro Okuda, Hitoshi Hori, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi, and Kazunori Anzai
    Chem. Commun., 2008 (5), 626-628.
    DOI: 10.1039/b715973k
    PMID: 18209811
    Released on November 28, 2007
  41. Effect of Methyl Substitution on Antioxidative Property and Genotoxicity of Resveratrol
    Kiyoshi Fukuhara, Ikuo Nakanishi, Atsuko Matsuoka, Tomohiro Matsumura, Sachiko Honda, Mikiko Hayashi, Toshihiko Ozawa, Naoki Miyata, Shinichi Saito, Nobuo Ikota, and Haruhiro Okuda
    Chem. Res. Toxicol., 21 (2), 282-287 (2008).
    DOI: 10.1021/tx7003008
    PMID: 18177016
    Released on January 5, 2008
  42. Intracellular and Extracellular Redox Environments Surrounding Redox-Sensitive Contrast Agents under Oxidative Atmosphere
    Aya Okajo, Iori Ui, Sushma Manda, Ikuo Nakanishi, Ken-ichiro Matsumoto, Kazunori Anzai, and Kazutoyo Endo
    Biol. Pharm. Bull., 32 (4), 535-541 (2009). Open access
    DOI: 10.1248/bpb.32.535
    PMID: 19336880
    Released on April 1, 2009
  43. Detection of Free Radical Reactions in an Aqueous Sample Induced by Low Linear-Energy-Transfer Irradiation
    Ken-ichiro Matsumoto, Aya Okajo, Katsura Nagata, William G. DeGraff, Minako Nyui, Megumi Ueno, Ikuo Nakanishi, Toshihiko Ozawa, James B. Mitchell, Murali C. Krishna, Haruhiko Yamamoto, Kazutoyo Endo, and Kazunori Anzai
    Biol. Pharm. Bull., 32 (4), 542-547 (2009). Open access
    DOI: 10.1248/bpb.32.542
    PMID: 19336881
    Released on April 1, 2009
  44. Intramolecular Base-Accelerated Radical-Scavenging Reaction of a Planar Catechin Derivative Bearing a Lysine Moiety
    Kiyoshi Fukuhara, Ikuo Nakanishi, Kei Ohkubo, Yoshinori Obara, Ayako Tada, Kohei Imai, Akiko Ohno, Asao Nakamura, Toshihiko Ozawa, Shiro Urano, Shinichi Saito, Shunichi Fukuzumi, Kazunori Aznai, Naoki Miyata, and Haruhiro Okuda
    Chem. Commun., 2009 (41), 6180-6182.
    DOI: 10.1039/b913714a
    PMID: 19826661
    Released on September 14, 2009
  45. Novel Ninhydrin Adduct of Catechin with Potent Antioxidative Activity
    Kiyoshi Fukuhara, Akiko Ohno, Ikuo Nakanishi, Kohei Imai, Asao Nakamura, Kazunori Aznai, Naoki Miyata, and Haruhiro Okuda
    Tetrahedron Lett., 50 (50), 6989-6992 (2009).
    DOI: 10.1016/j.tetlet.2009.09.149
    Released on October 2, 2009
  46. Distribution of Hydrogen Peroxide-Dependent Reaction in a Gelatin Sample Irradiated by Carbon Ion Beam
    Ken-ichiro Matsumoto, Ichio Aoki, Ikuo Nakanishi, Atsuko Matsumoto, Minako Nyui, Kazutoyo Endo, and Kazunori Anzai
    Magn. Reson. Med. Sci., 9 (3), 131-140 (2010). Open access
    DOI: 10.2463/mrms.9.131
    PMID: 20885086
    Released on September 27, 2010
  47. Potent 2,2-Diphenyl-1-picrylhydrazyl Radical-Scavenging Activity of Novel Antioxidants, Double-Stranded Tyrosine Residues Conjugating Pyrocatechol
    Shigeki Kobayashi, Tsukasa Waki, Ikuo Nakanishi, Ken-ichiro Matsumoto, and Kazunori Anzai
    Chem. Pharm. Bull., 58 (11), 1442-1446 (2010). Open access
    DOI: 10.1248/cpb.58.1442
    PMID: 21048334
    Released on November 1, 2010
  48. Synthesis and Enhanced Radical Scavenging Activity of a Conformationally Constrained Epigallocatechin Analogue
    Kohei Imai, Ikuo Nakanishi, Kazunori Anzai, Toshihiko Ozawa, Naoki Miyata, Shiro Urano, Haruhiro Okuda, Asao Nakamura, and Kiyoshi Fukuhara
    Chem. Lett., 40 (12), 1417-1419 (2011).
    DOI: 10.1246/cl.2011.1417
    Released on December 3, 2011
  49. Temperature-Dependent Free Radical Reaction in Water
    Ken-ichiro Matsumoto, Minako Nyui, Masato Kamibayashi, Toshihiko Ozawa, Ikuo Nakanishi, and Kazunori Anzai
    J. Clin. Biochem. Nutr., 50 (1), 40-46 (2012). Open access
    DOI: 10.3164/jcbn.10-145
    PMID: 22247599
    Released on December 28, 2011
  50. Key Role of Chemical Hardness to Compare 2,2-Diphenyl-1-picrylhydrazyl Radical Scavenging Power of Flavone and Flavonol O-Glycoside and C-Glycoside Derivatives
    Tsukasa Waki, Ikuo Nakanishi, Ken-ichiro Matsumoto, Junichi Kitajima, Toshiyuki Chikuma, and Shigeki Kobayashi
    Chem. Pharm. Bull., 60 (1), 37-44 (2012). Open access
    DOI: 10.1248/cpb.60.37
    PMID: 22223373
    Released on January 5, 2012
  51. Chlorine Atom Substitution Influences Radical Scavenging Activity of 6-Chromanol
    Keiko Inami, Yuko Iizuka, Miyuki Furukawa, Ikuo Nakanishi, Kei Ohkubo, Kiyoshi Fukuhara, Shunichi Fukuzumi, and Masataka Mochizuki
    Bioorg. Med. Chem., 20 (13), 4049-4055 (2012).
    DOI: 10.1016/j.bmc.2012.05.008
    PMID: 22658540
    Released on May 12, 2012
  52. Roles of Mitochondria-Generated Reactive Oxygen Species on X-ray-Induced Apoptosis in a Human Hepatocellular Carcinoma Cell Line, HLE
    Hiroko P. Indo, Osamu Inanami, Tomoko Koumura, Shigeaki Suenaga, Hsiu-Chuan Yen, Shizuko Kakinuma, Ken-ichiro Matsumoto, Ikuo Nakanishi, William St. Clair, Daret K. St. Clair, Hirofumi Matsui, Richard Cornette, Oleg Gusev, Takashi Okuda, Yasuhito Nakagawa, Toshihiko Ozawa, and Hideyuki J. Majima
    Free Radical Res., 46 (8), 1029-1043 (2012).
    DOI: 10.3109/10715762.2012.698012
    PMID: 22656864
    Released on June 25, 2012
  53. Kinetics and Mechanism for the Scavenging Reaction of the 2,2-Diphenyl-1-picrylhydrazyl Radical by Synthetic Artepillin C Analogues
    Tomonori Kawashima, Sushma Manda, Yoshihiro Uto, Kei Ohkubo, Hitoshi Hori, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, Kazunori Anzai, and Ikuo Nakanishi
    Bull. Chem. Soc. Jpn., 85 (8), 877-883 (2012).
    DOI: 10.1246/bcsj.20120005
    Released on August 3, 2012
  54. The High Stability of Intermediate Radicals Enhances the Radical-Scavenging Activity of Aminochromanols
    Keiko Inami, Ikuo Nakanishi, Mine Morita, Miyuki Furukawa, Kei Ohkubo, Shunichi Fukuzumi, and Masataka Mochizuki
    RSC Adv., 2 (33), 12714-12717 (2012).
    DOI: 10.1039/C2RA21928J
    Released on November 7, 2012
  55. Method for Assessing X-ray-Induced Hydroxyl-Radical Scavenging Activity of Biological Compounds/Materials
    Megumi Ueno, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    J. Clin. Biochem. Nutr., 52 (2), 95-100 (2013). Open access
    DOI: 10.3164/jcbn.12-75
    PMID: 23525190
    Released on January 12, 2013
  56. Comparison of in Vivo and in Vitro Antioxidative Parameters for Eleven Food Factors
    Hiroko P. Indo, Ikuo Nakanishi, Kei Ohkubo, Hsiu-Chuan Yen, Minako Nyui, Sushma Manda, Ken-ichiro Matsumoto, Kazunori Anzai, Nobuo Ikota, Hirofumi Matsui, Yukiko Minamiyama, Akira Nakajima, Hiroshi Ichikawa, Shunichi Fukuzumi, Toshihiko Ozawa, Chiaki Mukai, and Hideyuki J. Majima
    RSC Adv., 3 (14), 4535-4538 (2013).
    DOI: 10.1039/C3RA22686G
    Released on February 8, 2013
  57. High-Throughput Screening of Radioprotectors Using Rat Thymocytes
    Emiko Sekine-Suzuki, Ikuo Nakanishi, Takashi Shimokawa, Megumi Ueno, Ken-ichiro Matsumoto, and Takeshi Murakami
    Anal. Chem., 85 (16), 7650-7653 (2013).
    DOI: 10.1021/ac401903h
    PMID: 23902166
    Released on August 1, 2013
  58. Effects of Ionic Radius of Bio-Related Redox-Inactive Metal Ions on the Radical-Scavenging Activity of Flavonoids Evaluated by Photometric Titration
    Tsukasa Waki, Shigeki Kobayashi, Ken-ichiro Matsumoto, Toshihiko Ozawa, Tadashi Kamada,* and Ikuo Nakanishi*
    Chem. Commun., 49 (84), 9842-9844 (2013).
    DOI: 10.1039/C3CC45124K
    PMID: 24030811
    Released on August 28, 2013
  59. Disproportionaion of a 2,2-Diphenyl-1-picrylhydrazyl Radical as a Model of Reactive Oxygen Species Catalysed by Lewis and/or Bronsted Acids
    Ikuo Nakanishi, Tomonori Kawashima, Kei Ohkubo, Tsukasa Waki, Yoshihiro Uto, Tadashi Kamada, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi
    Chem. Commun., 50 (7), 814-816 (2014).
    DOI: 10.1039/C3CC47819J
    PMID: 24292255
    Released on November 7, 2013
  60. Scavenging of Reactive Oxygen Species Induced by Hyperthermia in Biological Fluid
    Megumi Ueno, Minako Nyui, Ikuo Nakanishi, Kazunori Anzai, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Yoshihiro Uto
    J. Clin. Biochem. Nutr., 54 (2), 75-80 (2014). Open access
    DOI: 10.3164/jcbn.13-61
    PMID: 24688214
    Released on March 1, 2014
  61. Synthesis and Radical-Scavenging Activity of a Dimethylcatechin Analogue
    Kohei Imai, Ikuo Nakanishi, Akiko Ohno, Masaaki Kurihara, Naoki Miyata, Ken-ichiro Matsumoto, Asao Nakamura, and Kiyoshi Fukuhara
    Bioorg. Med. Chem. Lett., 24 (11), 2582-2584 (2014).
    DOI: 10.1016/j.bmcl.2014.03.029
    PMID: 24792463
    Released on March 20, 2014
  62. Evaluation of the Sonosensitizing Activities of 5-Aminolevulinic Acid and Sn(IV) Chlorin e6 in Tumor-Bearing Chick Embryos
    Yoshihiro Uto, Dai Tamatani, Yusuke Mizui, Yoshio Endo, Ikuo Nakanishi, Kei Ohkubo, Shunichi Fukuzumi, Masahiro Ishizuka, Tohru Tanaka, Daisuke Kuchiike, Kentaro Kubo, Toshio Inui, and Hitoshi Hori
    Anticancer Res., 34 (8), 4583-4588 (2014).
    PMID: 25075103
    Released in August, 2014
  63. A Mitochondrial Superoxide Theory for Oxidative Stress Diseases and Aging
    Hiroko P. Indo, Hsiu-Chuan Yen, Ikuo Nakanishi, Ken-ichiro Matsumoto, Masato Tamura, Yumiko Nagano, Hirofumi Matsui, Oleg Gusev, Richard Cornette, Takashi Okuda, Yukiko Minamiyama, Hiroshi Ichikawa, Shigeaki Suenaga, Misato Oki, Tsuyoshi Sato, Toshihiko Ozawa, Daret K. St. Clair, and Hideyuki J. Majima
    J. Clin. Biochem. Nutr., 56 (1), 1-7 (2015). Open access
    DOI: 10.3164/jcbn.14-42
    PMID: 25834301
    Released on December 23, 2014
  64. Density of Hydroxyl Radicals Generated in an Aqueous Solution by Irradiating Carbon-Ion Beam
    Ken-ichiro Matsumoto, Megumi Ueno, Ikuo Nakanishi, and Kazunori Anzai
    Chem. Pharm. Bull., 63 (3), 195-199 (2015). Open access
    DOI: 10.1248/cpb.c14-00736
    PMID: 25757490
    Released on January 14, 2015
  65. Solubilisation of a 2,2-Diphenyl-1-picrylhydrazyl Radical in Water by beta-Cyclodextrin to Evaluate the Radical-Scavenging Activity of Antioxidants in Aqueous Media
    Ikuo Nakanishi, Kei Ohkubo, Kohei Imai, Masato Kamibayashi, Yasuo Yoshihashi, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Katsuhide Terada, Shinobu Itoh, Toshihiko Ozawa, and Shunichi Fukuzumi
    Chem. Commun., 51 (39), 8311-8314 (2015). Open access
    DOI: 10.1039/C5CC02236C
    PMID: 25877460
    Released on April 8, 2015
  66. Analysis of the Antioxidative Function of the Radioprotective Japanese Traditional (Kampo) Medicine, Hangeshashinto, in an Aqueous Phase
    Chinami Matsumoto, Emiko Sekine-Suzuki, Minako Nyui, Megumi Ueno, Ikuo Nakanishi, Yuji Omiya, Masato Fukutake, Yoshio Kase, and Ken-ichiro Matsumoto
    J. Radiat. Res., 56 (4), 669-677 (2015). Open access
    DOI: 10.1093/jrr/rrv023
    PMID: 25883171
    Released on April 16, 2015
  67. Effect of Alkyl Group on Transnitrosation of N-Nitroxothiazolidine Thiocarboxamides
    Keiko Inami, Yuta Ono, Sonoe Kondo, Ikuo Nakanishi, Kei Ohkubo, Shunichi Fukuzumi, and Masataka Mochizuki
    Bioorg. Med. Chem., 23 (20), 6733-6739 (2015).
    DOI: 10.1016/j.bmc.2015.09.008
    PMID: 26386820
    Released on September 5, 2015
  68. Brain Contrasting Ability of Blood-Brain-Barrier-Permeable Nitroxyl Contrast Agents for Magnetic Resonance Redox Imaging
    Ken-ichiro Matsumoto, Toshihide Yamasaki, Mizuki Nakamura, Megumi Ueno, Ikuo Nakanishi, Sayaka Shibata, Aiko Sekita, Tsuneo Saga, Tadashi Kamada, Ken-ichi Yamada, and Ichio Aoki
    Magn. Reson. Med., 76 (3), 935-945 (2016).
    DOI: 10.1002/mrm.25918
    PMID: 26414669
    Released on September 28, 2015
  69. Biological Measures to Minimize the Risk of Radiotherapy-Associated Second Cancer: a Research Perspective
    Tatsuhiko Imaoka, Nobuyoshi Ishii, Isao Kawaguchi, Shino Homma-Takeda, Kazutaka Doi, Kazuhiro Daino, Ikuo Nakanishi, Keiko Tagami, Toshiaki Kokubo, Takamitsu Morioka, Ayaka Hosoki, Masaru Takabatake, and Shinji Yoshinaga
    Int. J. Radiat. Biol., 92 (6), 289-301 (2016).
    DOI: 10.3109/09553002.2016.1152413
    PMID: 26967256
    Released on March 11, 2016
  70. Chasing Great Paths of Helmut Sies "Oxidative Stress"
    Hideyuki J. Majima, Hiroko P. Indo, Ikuo Nakanishi, Shigeaki Suenaga, Ken-ichiro Matsumoto, Hirofumi Matsui, Yukiko Minamiyama, Hiroshi Ichikawa, Hsiu-Chuan Yen, Clare L. Hawkins, Michael J. Davies, Toshihiko Ozawa, and Daret K. St Clair
    Arch. Biochem. Biophys., 595, 54-60 (2016).
    DOI: 10.1016/j.abb.2015.10.023
    PMID: 27095216
    Released on April 7, 2016
  71. Radiosensitizing Effect of Protoporphyrin IX with Carbon Ion Beam against Mouse Mammary Breast Tumor Cell
    Tomoko Kaneko, Masahide Tominaga, Hideaki Endo, Kazunori Yaju, Risa Kouzaki, Hisatsugu Yamada, Ikuo Nakanishi, Ken-ichiro Matsumoto, and Yoshihiro Uto
    J. Adv. Manuf. Technol., (Special Issue 3rd TMAC Symposium 2016), 47-52 (2016).
    Released on May 1, 2016
  72. A Facile and Rapid Access to Resveratrol Derivatives and Their Radioprotective Activity
    Saori Uzura, Emiko Sekine-Suzuki, Ikuo Nakanishi, Motohiro Sonoda, and Shinji Tanimori
    Bioorg. Med. Chem. Lett., 26 (16), 3886-3891 (2016).
    DOI: 10.1016/j.bmcl.2016.07.018
    PMID: 27426305
    Released on July 7, 2016
  73. Aluminium Ion-Promoted Radical-Scavenging Reaction of Methylated Hydroquinone Derivatives
    Ikuo Nakanishi, Kei Ohkubo, Yukihiro Ogawa, Ken-ichiro Matsumoto, Toshihiko Ozawa, and Shunichi Fukuzumi
    Org. Biomol. Chem., 14 (33), 7956-7961 (2016). Open access
    DOI: 10.1039/C6OB01470D
    PMID: 27492849
    Released on July 26, 2016
  74. Reactivity of 2,2-Diphenyl-1-picrylhydrazyl Solubilized in Water by beta-Cyclodextrin and Its Methylated Derivative
    Ikuo Nakanishi, Kei Ohkubo, Masato Kamibayashi, Yukihiro Ogawa, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi
    ChemistrySelect, 1 (12), 3367-3370 (2016).
    DOI: 10.1002/slct.201600745
    Released on August 1, 2016
  75. Non-invasive Measurement of Melanin-Derived Radicals in Living Mouse Tail Using X-Band EPR
    Yukihiro Ogawa, Megumi Ueno, Emiko Sekine-Suzuki, Ikuo Nakanishi, Ken-ichiro Matsumoto, and Shingo Fujisaki
    J. Clin. Biochem. Nutr., 59 (3), 160-164 (2016). Open access
    DOI: 10.3164/jcbn.15-99
    PMID: 27895382
    Released on October 8, 2016
  76. Synthesis and Antioxidant Activity of a Procyanidin B3 Analogue
    Mirei Mizuno, Ikuo Nakanishi, Satoko Matsubayashi, Kohei Imai, Takuya Arai, Ken-ichiro Matsumoto, and Kiyoshi Fukuhara
    Bioorg. Med. Chem. Lett., 27 (4), 1041-1044 (2017).
    DOI: 10.1016/j.bmcl.2016.12.067
    PMID: 28082039
    Released on December 29, 2016
  77. Amplification of Glutathione-Mediated Oxidative Stress by Catalase in an Aqueous Solution at Hyperthermal Temperatures
    Megumi Ueno, Emiko Sekine-Suzuki, Minako Nyui, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    J. Clin. Biochem. Nutr., 60 (2), 93-99 (2017). Open access
    DOI: 10.3164/jcbn.16-28
    PMID: 28366987
    Released on February 24, 2017
  78. Synthesis of Methylated Quercetin Analogues for Enhancement of Radical-Scavenging Activity
    Kohei Imai, Ikuo Nakanishi, Kei Ohkubo, Yusuke Ohba, Takuya Arai, Mirei Mizuno, Shunichi Fukuzumi, Ken-ichiro Matsumoto, and Kiyoshi Fukuhara
    RSC Adv., 7 (29), 17968-17979 (2017). Open access
    DOI: 10.1039/C7RA02329D
    Released on March 24, 2017
  79. Effect of Amifostine, a Radiation-Protecting Drug, on Oxygen Concentration in Tissue Measured by EPR Oximetry and Imaging
    Megumi Ueno, Shingo Matsumoto, Atsuko Matsumoto, Sushma Manda, Ikuo Nakanishi, Ken-ichiro Matsumoto, James B. Mitchell, Murali C. Krishna, and Kazunori Anzai
    J. Clin. Biochem. Nutr., 60 (3), 151-155 (2017). Open access
    DOI: 10.3164/jcbn.15-130
    PMID: 28584395
    Released on March 25, 2017
  80. Enhanced Radical Scavenging Activity of a Procyanidin B3 Analogue Comprised of a Dimer of Planar Catechin
    Mirei Mizuno, Ikuo Nakanishi, Ken-ichiro Matsumoto, and Kiyoshi Fukuhara
    Bioorg. Med. Chem. Lett., 27 (22), 5010-5013 (2017).
    DOI: 10.1016/j.bmcl.2017.10.007
    PMID: 29054360
    Released on October 6, 2017
  81. Feasibility of Magnetic Resonance Redox Imaging at Low Magnetic Field: Comparison at 1 T and 7 T
    Mizuki Nakamura, Sayaka Shibata, Toshihide Yamasaki, Megumi Ueno, Ikuo Nakanishi, Ken-ichiro Matsumoto, Tadashi Kamada, Ken-ichi Yamada, and Ichio Aoki
    Am. J. Transl. Res., 9 (10), 4481-4491 (2017). Open access
    PDF
    Released on October 15, 2017
  82. Analysis of Redox States of Protic and Aprotic Solutions Irradiated by Low Linear Energy Transfer Carbon-Ion Beams Using a 2,2-Diphyenyl-1-picrylhydrazyl Radical
    Ikuo Nakanishi,* Shinichi Yamashita, Takashi Shimokawa, Masato Kamibayashi, Emiko Sekine-Suzuki, Megumi Ueno, Yukihiro Ogawa, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Org. Biomol. Chem., 16 (8), 1272-1276 (2018).
    DOI: 10.1039/C7OB02904G
    PMID: 29384168
    Released on January 17, 2018
  83. A New Approach for Quantifying Radio-Biological Effects Using the Time Course of Mouse Leg Contracture
    Megumi Ueno, Ikuo Nakanishi, and Ken-ichiro Matsumoto*
    Biol. Pharm. Bull., 41 (3), 368-373 (2018). Open access
    DOI: 10.1248/bpb.b17-00689
    PMID: 29491213
    Released on March 1, 2018
  84. Efficient Protective Activity of a Planar Catechin Analogue against Radiation-Induced Apoptosis in Rat Thymocytes
    Emiko Sekine-Suzuki, Ikuo Nakanishi,* Kohei Imai, Megumi Ueno, Takashi Shimokawa,* Ken-ichiro Matsumoto, and Kiyoshi Fukuhara*
    RSC Adv., 8 (19), 10158-10162 (2018). Open access
    DOI: 10.1039/C7RA13111A
    Released on March 13, 2018
  85. Localized Hydroxyl Radical Generation at mmol/L and mol/L Levels in Water by Photon Irradiation
    Yukihiro Ogawa, Emioko Sekine-Suzuki, Megumi Ueno, Ikuo Nakanishi, and Ken-ichiro Matsumoto*
    J. Clin. Biochem. Nutr., 63 (2), 97-101 (2018). Open access
    DOI: 10.3164/jcbn.18-15
    PMID: 30279619
    Released on April 3, 2018
  86. Reactivity of Redox Sensitive Paramagnetic Nitroxyl Contrast Agents with Reactive Oxygen Species
    Minako Nyui, Ikuo Nakanishi, Kazunori Anzai, Toshihio Ozawa, and Ken-ichiro Matsumoto*
    J. Clin. Biochem. Nutr., 64 (1), 13-19 (2019). Open access
    DOI: 10.3164/jcbn.17-135
    PMID: 30705507
    Released on September 15, 2018
  87. Assessment of Redox Status in Commercial Bottled Mineral Water
    Ken-ichiro Matsumoto, Yukihiro Ogawa, Masato Kamibayashi, Minako Nyui, Ikuo Nakanishi, Shigeaki Suenaga, Hiromu Ito, Hirofumi Matsui, Toshihiko Ozawa, Hiroko P. Indo,* and Hideyuki J. Majima*
    J. Clin. Nutr. Food Sci., 1 (1), 29-34 (2018). Open access
    PDF
    Released on October 18, 2018
  88. Synthesis and Radical-Scavenging Activity of C-Methylated Fisetin Analogues
    Kohei Imai, Ikuo Nakanishi, Kei Ohkubo, Akiko Ohno, Mirei Mizuno, Shunichi Fukuzumi, Ken-ichiro Matsumoto, and Kiyoshi Fukuhara*
    Bioorg. Med. Chem., 27 (8), 1720-1727 (2019).
    DOI: 10.1016/j.bmc.2019.02.033
    PMID: 30846403
    Released on February 27, 2019
  89. A Quantitative Analysis of Carbon-Ion Beam-Induced Reactive Oxygen Species and Redox Reactions
    Ken-ichiro Matsumoto,* Minako Nyui, Megumi Ueno, Yukihiro Ogawa, and Ikuo Nakanishi
    J. Clin. Biochem. Nutr., 65 (1), 1-7 (2019). Open access
    DOI: 10.3164/jcbn.18-34
    PMID: 31379407
    Released on March 29, 2019
  90. Radiation-Induced Redox Alteration in the Mouse Brain
    Mizuki Nakamura, Toshihide Yamasaki, Megumi Ueno, Sayaka Shibata, Yoshikazu Ozawa, Tadashi Kamada, Ikuo Nakanishi, Ken-ichi Yamada, Ichio Aoki, and Ken-ichiro Matsumoto*
    Free Radical Biol. Med., 143, 412-421 (2019).
    DOI: 10.1016/j.freeradbiomed.2019.08.020
    PMID: 31446055
    Released on August 22, 2019
  91. Reduction of Molecular Oxygen by Redox Active Thiols: Comparison of Glutathione, N-Acetylcysteine, Cysteine, and Homocysteine
    Minako Nyui, Yoshimi Shoji, Megumi Ueno, Ikuo Nakanishi,* and Ken-ichiro Matsumoto*
    J. Clin. Biochem. Nutr., 65 (3), 185-192 (2019). Open access
    DOI: 10.3164/jcbn.19-25
    PMID: 31777419
    Released on September 11, 2019
  92. Protective Effect of D-Methionine on Plasmid DNA Damage Induced by Therapeutic Carbon Ions
    Katsunori Yogo,* Chieko Murayama, Yoshiki Fujisawa, Takuya Maeyama, Ryoichi Hirayama, Ken-ichiro Matsumoto, Ikuo Nakanishi, Hiroshi Yasuda, Hiromichi Ishiyama, and Kazushige Hayakawa
    Radiat. Res. ,193 (6), 513-519 (2020).
    DOI: 10.1667/RR15502.1
    PMID: 32216711
    Released on March 27, 2020
  93. Effects of Low-Dose X-ray Irradiation on Melanin-Derived Radicals in Mouse Hair and Skin
    Ken-ichiro Matsumoto,* Megumi Ueno, Ikuo Nakanishi, Hiroko P. Indo, and Hideyuki J. Majima
    J. Clin. Biochem. Nutr., 67 (2), 174-178 (2020). Open access
    DOI: 10.3164/jcbn.20-34
    PMID: 33041515
    Released on June 3, 2020
  94. Generation of Localized Highly Concentrated Hydrogen Peroxide Clusters in Water by X-rays
    Megumi Ueno, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    Free Radical Res., 54 (5), 360-372 (2020).
    DOI: 10.1080/10715762.2020.1774574
    PMID: 32450709
    Released on June 19, 2020
  95. A Large Kinetic Isotope Effect in the Reaction of Ascorbic Acid with 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-Oxide (PTIO center dot) in Aqueous Buffer Solutions
    Ikuo Nakanishi,* Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi*
    Chem. Commun., 56 (77), 11505-11507 (2020). Open access
    DOI: 10.1039/D0CC05214K
    PMID: 32945829
    Released on August 24, 2020
  96. Relationship between the Radical-Scavenging Activity of Selected Flavonols and Thermodynamic Parameters Calculated by Density Functional Theory
    Ikuo Nakanishi,* Kei Ohkubo,* Yoshimi Shoji, Yuya Fujitaka, Kei Shimoda, Ken-ichiro Matsumoto, Kiyoshi Fukuhara,* and Hiroki Hamada*
    Free Radical Res., 54 (7), 535-539 (2020). Open access
    DOI: 10.1080/10715762.2020.1813887
    PMID: 32838569
    Released on September 7, 2020
  97. Preparation of an Experimental Mouse Model Lacking Selenium-Dependent Glutathione Peroxidase Activities by Feeding a Selenium-Deficient Diet
    Megumi Ueno, Takashi Shimokawa, Emiko Sekine-Suzuki, Minako Nyui, Ikuo Nakanishi, and Ken-ichiro Matsumoto*
    J. Clin. Biochem. Nutr., 68 (2), 123-130 (2021). Open access
    DOI: 10.3164/jcbn.20-36
    PMID: 33879963
    Released on September 17, 2020
  98. Inhomogeneous Generation of Hydroxyl Radicals in Hydrogen Peroxide Solution Induced by Ultraviolet Irradiation and in a Fenton Reaction System
    Megumi Ueno, Ikuo Nakanishi, and Ken-ichiro Matsumoto*
    Free Radical Res., 55 (4), 481-489 (2021).
    DOI: 10.1080/10715762.2020.1819995
    PMID: 32896187
    Released on September 21, 2020
  99. Lipid-Soluble Polyphenols Extracted from Sweet Potato Exert Antitumor Activity and Enhance Chemo-Sensitivity of Breast Cancer
    Kazuhiro Kato, Masaki Nagane, Naoyuki Aihara, Junichi Kamiie, Masakatsu Miyanabe, Shinobu Hiraki, Xiaolin Luo, Ikuo Nakanishi, Yoshimi Shoji, Ken-ichiro Matsumoto, and Tadashi Yamashita
    J. Clin. Biochem. Nutr., 68 (3) 193-200 (2021). Open access
    DOI: 10.3164/jcbn.20-73
    PMID: 34025021
    Released on January 16, 2021
  100. Effects of Reaction Environments on Radical-Scavenging Mechanisms of Ascorbic Acid
    Ikuo Nakanishi,* Yoshimi Shoji, Kei Ohkubo, Kiyoshi Fukuhara, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi*
    J. Clin. Biochem. Nutr., 68 (2), 116-122 (2021). Open access
    DOI: 10.3164/jcbn.20-147
    PMID: 33879962
    Released on January 16, 2021
  101. Heavy-Ion Beam-Induced Reactive Oxygen Species and Redox Reactions
    Ken-ichiro Matsumoto,* Megumi Ueno, Yoshimi Shoji, and Ikuo Nakanishi
    Free Radical Res., 55 (4), 450-460 (2021). Open access
    DOI: 10.1080/10715762.2021.1899171
    PMID: 33729087
    Released on March 17, 2021
  102. Protective Effects of Amino Acids on Plasmid DNA Damage Induced by Therapeutic Carbon Ions
    Katsunori Yogo,* Chieko Murayama, Ryoichi Hirayama, Ken-ichiro Matsumoto, Ikuo Nakanishi, Hiromichi Ishiyama, and Hiroshi Yasuda
    Radiat. Res., 196 (2), 197-203 (2021).
    DOI: 10.1667/RADE-21-00033.1
    PMID: 34043797
    Released on May 27, 2021
  103. Nitroxyl Radical as a Theranostic Contrast Agent in Magnetic Resonance Imaging
    Ken-ichiro Matsumoto,* Ikuo Nakanishi, Zhivko Zhelev, Rumiana Bakalova, and Ichio Aoki
    Antioxid. Redox Signaling, 36 (1-3), 95-121 (2022). Open access
    DOI: 10.1089/ars.2021.0110
    PMID: 34148403
    Released on June 19, 2021
  104. Effects of LET on Oxygen-Dependent and -Independent Generation of Hydrogen Peroxide in Water Irradiated by Carbon-Ion Beams
    Ken-ichiro Matsumoto,* Megumi Ueno, Minako Nyui, Yoshimi Shoji, and Ikuo Nakanishi
    Free Radical Res., 55 (6), 589-594 (2021). Open access
    DOI: 10.1080/10715762.2021.1915489
    PMID: 34519601
    Released on September 14, 2021
  105. Effects of Loading a Magnetic Field Longitudinal to the Linear Particle-Beam Track on Yields of Reactive Oxygen Species in Water
    Ken-ichiro Matsumoto,* Ikuo Nakanishi, Yasushi Abe, Shinji Sato, Ryosuke Kohno, Dousatsu Sakata, Kota Mizushima, Sung Hyun Lee, and Taku Inaniwa
    Free Radical Res., 55 (5), 547-555 (2021). Open access
    DOI: 10.1080/10715762.2021.1970151
    PMID: 34569399
    Released on September 27, 2021
  106. Tunneling in the Hydrogen-Transfer Reaction from a Vitamin E Analog to an Inclusion Complex of 2,2-Diphenyl-1-picrylhydrazyl Radical with beta-Cyclodextrin in an Aqueous Buffer Solution at Ambient Temperature
    Ikuo Nakanishi,* Yoshimi Shoji, Kei Ohkubo,* and Shunichi Fukuzumi*
    Antioxidants, 10 (12), 1966 (2021). Open access
    DOI: 10.3390/antiox10121966
    PMID: 34943069
    Released on December 8, 2021
  107. Electrochemical Redox Behavior of 2,2-Diphenyl-1-picrylhydrazyl Radical Solubilized by beta-Cyclodextrin in Water
    Ikuo Nakanishi* and Yoshimi Shoji
    Electrochem. Commun., 134, 107190 (2022). Open access
    DOI: 10.1016/j.elecom.2021.107190
    Released on December 24, 2021
  108. Simplifying Quantitative Measurement of Free Radical Species Using an X-Band EPR Spectrometer
    Yusuke Makino, Megumi Ueno, Yoshimi Shoji, Minako Nyui, Ikuo Nakanishi, Koji Fukui, and Ken-ichiro Matsumoto*
    J. Clin. Biochem. Nutr., 70 (3), 213-221 (2022). Open access
    DOI: 10.3164/jcbn.21-83
    PMID: 35692674
    Released on December 25, 2021
  109. Estimation of the Local Concentration of the Markedly Dense Hydroxyl Radical Generation Induced by X-rays in Water
    Ken-ichiro Matsumoto,* Megumi Ueno, Yoshimi Shoji, and Ikuo Nakanishi
    Molecules, 27 (3), 592 (2022). Open access
    DOI: 10.3390/molecules27030592
    PMID: 35163857
    Released on January 18, 2022
  110. Effect of Magnesium Ion on the Radical-Scavenging Rate of Pterostilbene in an Aprotic Medium: Mechanistic Insight into the Antioxidative Reaction of Pterostilbene
    Ikuo Nakanishi,* Yoshimi Shoji, Kei Ohkubo,* Megumi Ueno, Kei Shimoda, Ken-ichiro Matsumoto, Kiyoshi Fukuhara,* and Hiroki Hamada*
    Antioxidants, 11 (2), 340 (2022). Open access
    DOI: 10.3390/antiox11020340
    PMID: 35204222
    Released on February 9, 2022
  111. Importance of Locations of Iron Ions to Elicit Cytotoxicity Induced by a Fenton-Type Reaction
    Kintaro Igarashi, Yoshimi Shoji, Emiko Sekine-Suzuki, Megumi Ueno, Ken-ichiro Matsumoto,* Ikuo Nakanishi, and Koji Fukui
    Cancers, 14 (15), 3642(2022). Open access
    DOI: 10.3390/cancers14153642
    PMID: 35892902
    Released on July 27, 2022
  112. Effects of Selenium Deficiency on Biological Results of X-ray and Carbon-Ion Beam Irradiation in Mice
    Megumi Ueno, Sayaka Shibata, Ikuo Nakanishi, Ichio Aoki, Ken-ichi Yamada, and Ken-ichiro Matsumoto*
    J. Clin. Biochem. Nutr., 72 (2), 107-116 (2023). Open access
    DOI: 10.3164/jcbn.22-57
    PMID: 36936873
    Released on December 8, 2022
  113. DTPA-Bound Planar Catechin with Potent Antioxidant Activity Triggered by Fe3+ Coordination
    Kiyoshi Fukuhara,* Ikuo Nakanishi, Kohei Imai, Mirei Mizuno, Ken-ichiro Matsumoto, and Akiko Ohno
    Antioxidants, 12 (2) 225 (2023). Open access
    DOI: 10.3390/antiox12020225
    PMID: 36829782
    Released on January 18, 2023
  114. Evidence of Nrf2/Keap1 Signaling Regulation by Mitochondria-Generated Reactive Oxygen Species in RGK1 Cells
    Hiroko P. Indo,* Daisuke Masuda, Sompong Sriburee, Hiromu Ito, Ikuo Nakanishi, Ken-ichiro Matsumoto, Samlee Mankhetkorn, Moragot Chatatikun, Sirirat Surinkaew, Lunla Udomwech, Fumitaka Kawakami, Takafumi Ichikawa, Hirofumi Matsui, Jitbanjong Tangpong, and Hideyuki J. Majima*
    Biomolecules, 13 (3), 445 (2023). Open access
    DOI: 10.3390/biom13030445
    PMID: 36979380
    Released on February 27, 2023
  115. Effects of X-ray Irradiation on the Redox Status of Mouse Colorectal Tissues
    Megumi Ueno, Raj Kumar Parajuri, Hiromu Ito, Megumi Iiyama, Saaya Suzuki, Ken-ichiro Matsumoto,* Ikuo Nakanishi, Ichio Aoki, and Akira Sumiyoshi
    Adv. Redox Res., 8, 100067 (2023). Open access
    DOI: 10.1016/j.arres.2023.100067
    Released on March 26, 2023
  116. In Vitro Radical-Scavenging Mechanism of Melatonin and Its In Vivo Protective Effect against Radiation-Induced Lipid Peroxidation
    Kailash Manda,* Kei Ohkubo,* Yoshimi Shoji, A. K. M. Raushan Kabir Zoardar, Masato Kamibayashi, Toshihiko Ozawa, Kazunori Anzai, and Ikuo Nakanishi*
    Redox Biochem. Chem., 3-4, 100003 (2023). Open access
    DOI: 10.1016/j.rbc.2023.100003
    Released on April 11, 2023
  117. Water-Induced Regeneration of a 2,2-Diphenyl-1-picrylhydrazyl Radical after Its Scandium Ion-Promoted Electron-Transfer Disproportionation in an Aprotic Medium
    Ikuo Nakanishi,* Yoshimi Shoji, Kei Ohkubo,* Hiromu Ito, and Shunichi Fukuzumi*
    Molecules, 28 (13), 5002 (2023). Open access
    DOI: 10.3390/molecules28135002
    PMID: 37446663
    Released on June 26, 2023
  118. Anti-Cancer Effect of a Planar Catechin Analog through the Decrease in Miotchondrial Membrane Potential
    Hiromu Ito,* Yoshimi Shoji, Ken-ichiro Matsumoto, Kiyoshi Fukuhara,* and Ikuo Nakanishi*
    ACS Med. Chem. Lett., 14 (10), 1478-1481 (2023).
    DOI: 10.1021/acsmedchemlett.3c00328
    PMID: 37849552
    Released on October 3, 2023
  119. Photodynamic Therapy for X-ray-Induced Radiation-Resistant Cancer Cells
    Hiromu Ito,* Yoshimi Shoji, Megumi Ueno, Ken-ichiro Matsumoto, and Ikuo Nakanishi*
    Pharmaceutics, 15 (11), 2536 (2023). Open access
    DOI: 10.3390/pharmaceutics15112536
    PMID: 38004516
    Released on October 26, 2023
  120. Enhanced Inhibition of Cancer Cell Migration by a Planar Catechin Analog
    Hiromu Ito,* Yoshimi Shoji, Ken-ichiro Matsumoto, Kiyoshi Fukuhara,* Ikuo Nakanishi*
    ACS Med. Chem. Lett., 15 (2), 310-313 (2024).
    DOI: 10.1021/acsmedchemlett.3c00499
    PMID: 38352823
    Released on January 10, 2024
  121. Hair Follicle Damage after 100 mGy Low-Dose Fractionated X-ray Irradiation and the Protective Effects of TEMPOL, a Stable Nitroxide Radical, against Radiation
    Yoshihiro Kawabata, Tomoko Fukushige, Hiroko P. Indo, Ken-ichiro Matsumoto,* Megumi Ueno, Ikuo Nakanishi, Moragot Chatatikun, Wiyada Kwanhian Klangbud, Sirirat Surinkaew, Jitbanjong Tangpong, Takuro Kanekura, and Hideyuki J. Majima*
    Radiat. Res., 201 (2), 115-125 (2024).
    DOI: 10.1667/RADE-23-00167.1
    PMID: 38211765
    Released on January 12, 2024
  122. Mitochondria Play Essential Roles in Intracellular Protection against Oxidative Stress-Which Molecules among the ROS Generated in the Mitochondria Can Escape the Mitochondria and Contribute to Signal Activation in Cytosol?
    Daisuke Masuda, Ikuo Nakanishi,* Kei Ohkubo, Hiromu Ito, Ken-ichiro Matsumoto, Hiroshi Ichikawa, Moragot Chatatikun, Wiyada Kwanhian Klangbud, Manas Kotepui, Motoki Imai, Fumitaka Kawakami, Makoto Kubo, Hirofumi Matsui, Jitbanjong Tangpong, Takafumi Ichikawa, Toshihiko Ozawa, Hsui-Chuan Yen, Daret K. St Clair, Hiroko P. Indo, and Hideyuki J. Majima*
    Biomolecules, 14 (1), 128 (2024). Open access
    DOI: 10.3390/biom14010128
    PMID: 38275757
    Released on January 19, 2024
  123. Scandium Ion-Promoted Electron-Transfer Disproportionation of 2-Phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-Oxide (PTIO center dot) in Acetonitrile and Its Regeneration Induced by Water
    Yoshimi Shoji, Yuri Terashima, Kei Ohkubo, Hiromu Ito, Kouichi Maruyama, Shunichi Fukuzumi, and Ikuo Nakanishi*
    Int. J. Mol. Sci., 25 (8), 4417 (2024). Open access
    DOI: 10.3390/ijms25084417
    PMID: 38674002
    Released on April 17, 2024
  124. Construction of a Screening System for Lipid-Derived Radical Inhibitors and Validation of Hit Compounds to Target Retinal and Cerebrovascular Diseases
    Ryota Mori, Masami Abe, Yuma Saimoto, Saki Shinto, Sara Jodai, Manami Tomomatsu, Kaho Tazoe, Minato Ishida, Masataka Enoki, Nao Kato, Tomohiro Yamashita, Yuki Itabashi, Ikuo Nakanishi, Kei Ohkubo, Sachiko Kaidzu, Masaki Tanito, Yuta Matsuoka, Kazushi Morimoto, and Ken-ichi Yamada*
    Redox Biol., 73, 103186 (2024). Open access
    DOI: 10.1016/j.redox.2024.103186
    PMID: 38744193
    Released on May 8, 2024
  125. A Mechanism for Apoptotic Effects of a Planar Catechin Analog on Cancer Cells
    Hiromu Ito,* Yoshimi Shoji, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, and Ikuo Nakanishi*
    Molecules, 29 (18), 4467 (2024). Open access
    DOI: 10.3390/molecules29184467
    PMID: 39339462
    Released on September 20, 2024
  126. Antioxidant Activity of Planar Catechin Conjugated with Trolox
    Wakana Shimizu, Yoshimi Shoji, Kei Ohkubo, Hiromu Ito, Ikuo Nakanishi,* and Kiyoshi Fukuhara*
    Antioxidants, 13 (10), 1165 (2024). Open access
    DOI: 10.3390/antiox13101165
    PMID: 39456420
    Released on September 25, 2024
  127. The Roles of Mitochondria in Human Being's Life and Aging
    Hiroko P. Indo, Moragot Chatatikun, Ikuo Nakanishi, Ken-ichiro Matsumoto, Motoki Imai, Fumitaka Kawakami, Makoto Kubo, Hiroshi Abe, Hiroshi Ichikawa, Yoshikazu Yonei, Hisashi J. Beppu, Yukiko Minamiyama, Takuro Kanekura, Takafumi Ichikawa, Atthaphong Phongphithakchai, Lunla Udomwech, Suriyan Sukati, Nurdina Charong, Voravuth Somsak, Jitbanjong Tangpong, Sachiyo Nomura, and Hideyuki J. Majima*
    Biomolecules, 14 (10), 1317 (2024). Open access
    DOI: 10.3390/biom14101317
    PMID: 39456251
    Released on October 17, 2024
  128. Radical Scavenging Rate Constants Determined by Spin Relaxation Times of Spin Polarized Radicals as Measured by Free Induction Decay Signals
    Hiroki Hirano, Ai Nagata, Kaito Marumo, Hirona Takahashi, Ikuo Nakanishi, and Akio Kawai*
    J. Chem. Phys., in contribution.
    DOI:
    PMID:
    Released on
  129. Enhanced Cytotoxicity by Acetylation of a Planar Catechin Analog
    Hiromu Ito,* Yoshimi Shoji, Ken-ichiro Matsumoto, Kiyoshi Fukuhara,* and Ikuo Nakanishi*
    Journal Title, in preparation.
    DOI:
    PMID:
    Released on
  130. Title
    Megumi Ueno, Minako Nyui, Ken-ichiro Matsumoto,* Ikuo Nakanishi, Hiroko P. Indo,* Akira Fujii, Masanobu Nagano, Jitbanjong Tangpong, and Hideyuki J. Majima*
    Journal Title, in preparation.
    DOI:
    PMID:
    Released on
B O O K S and P R O C E E D I N G S
  1. Research Guide for First Year Graduate Students. The Basics of Giving a Research Presentation
    Ikuo Nakanishi
    Kagaku, 52 (4), 20-22 (1997).
  2. Formation of C60 Radical Anion in the Reaction of C60 with Alkoxide Anions
    Shunichi Fukuzumi, Ikuo Nakanishi, Junichi Maruta, Tomoyoshi Suenobu, Ryuichi Arakawa, and Karl M. Kadish
    "Fullerenes Volume 5: Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials," ed by K. M. Kadish and R. S. Ruoff, The Electrochemical Society, Pennington, NJ (1997), pp.20-32.
  3. Electron Transfer Properties of C60 and the Alkyl Adduct Anion
    Shunichi Fukuzumi, Ikuo Nakanishi, Tomoyoshi Suenobu, and Karl M. Kadish
    "Fullerenes Volume 6: Recent Advances in the Chemistry and Physics of Fullerenes and Related Materials," ed by K. M. Kadish and R. S. Ruoff, The Electrochemical Society, Pennington, NJ (1998), pp.1263-1275.
  4. O2･- Generation in C60-Photosensitized Oxidation of NADH and an Analogue by Oxygen
    Ikuo Nakanishi, Yoko Yamakoshi, Kei Ohkubo, Shunsuke Fujita, Mamoru Fujitsuka, Osamu Ito, Shunichi Fukuzumi, and Naoki Miyata
    "Fullerenes 2000 Volume 8: Electrochemistry and Photochemistry," ed by S. Fukuzumi, F. D'Souza, and D. M. Guldi, The Electrochemical Society, Pennington, NJ (2000), pp.242-255.
  5. DNA Cleavage via Electron Transfer from NADH to Molecular Oxygen Photoinduced by gamma-Cyclodextrin-Bicapped C60
    Ikuo Nakanishi, Shunichi Fukuzumi, Toshifumi Konishi, Kei Ohkubo, Mamoru Fujitsuka, Osamu Ito, and Naoki Miyata
    "Fullerenes Volume 11: Fullerenes for the New Millenium," ed by P. V. Kamat, D. M. Guldi, and K. M. Kadish, The Electrochemical Society, Pennington, NJ (2001), pp.138-151.
  6. Generation of Oxygen Radicals and DNA-Cleaving Ability in Quinone/NADH System
    Kiyoshi Fukuhara, Yuki Naito, Yukiko Sato, Ikuo Nakanishi, and Naoki Miyata
    Magnetic Resonance in Medicine, 13, 139-142 (2002).
  7. Mechanism of Generation of Reactive Oxygen Species and DNA Damage by Photosensitized Reactions of Fullerenes
    Ikuo Nakanishi
    Radiological Sciences, 45 (10), 322-326 (2002).
  8. Electron-Transfer Mechanism in Radical-Scavenging Reactions of Flavonoids
    Ikuo Nakanishi, Kentaro Miyazaki, Tomokazu Shimada, Kei Ohkubo, Wataru Hakamata, Shiro Urano, Haruhiro Okuda, Shunichi Fukuzumi, Kiyoshi Fukuhara, Nobuo Ikota, and Toshihiko Ozawa
    Free Radical Biol. Med., 33 (S2), S308-S309 (2002).
  9. Oxidation Potentials of Antioxidative Flavonoids and the Radical-Scavenging Abilities
    Ikuo Nakanishi, Kentaro Miyazaki, Kei Ohkubo, Shiro Urano, Jun-Ichi Ueda, Wataru Hakamata, Haruhiro Okuda, Toshihiko Ozawa, Shunichi Fukuzumi, Kiyoshi Fukuhara, and Nobuo Ikota
    Free Radical Biol. Med., 35 (S1), S43 (2003).
  10. Radical-Scavenging Reactions of 4-Hydroxycinnamic Acid Derivatives in the Presence of Metal Ions
    Ikuo Nakanishi, Yoshihiro Uto, Tomonori Kawashima, Haruko Yakumaru, Hideko Kanazawa, Toshiniko Ozawa, Hideko Nagasawa, Hitoshi Hori, and Nobuo Ikota
    J. Pharm. Soc. Jpn., 124 (Suppl. 1), 94 (2004).
  11. Effects of Metal Ions on the Stability of Oxygen and Nitrogen Radicals
    Ikuo Nakanishi, Tomonori Kawashima, Hideko Kanazawa, Kei Ohkubo, Kiyoshi Fukuhara, Toshiniko Ozawa, Shunichi Fukuzumi, and Nobuo Ikota
    J. Pharm. Soc. Jpn., 124 (Suppl. 1), 95 (2004).
  12. ESR Study on Stable Magnesium Complexes of the Phenoxyl Radicals Derived from a Vitamin E Model and Its Deuterated Derivatives
    Ikuo Nakanishi, Shigenobu Matsumoto, Kei Ohkubo, Kiyoshi Fukuhara, Haruhiro Okuda, Keiko Inami, Masataka Mochizuki, Shinobu Itoh, Shunichi Fukuzumi, Nobuo Ikota, and Toshihiko Ozawa
    Free Radical Biol. Med., 37 (S1), S40 (2004).
  13. Solvent Effect on the Mechanism of Radical-Scavenging Reactions of a Vitamin E Analogue
    Ikuo Nakanishi, Tomonori Kawashima, Kei Ohkubo, Hideko Kanazawa, Haruhiro Okuda, Toshihiko Ozawa, Shunichi Fukuzumi, Kiyoshi Fukuhara, and Nobuo Ikota
    Free Radical Biol. Med., 37 (S1), S39-S40 (2004).
  14. Radical-Scavenging Activities of Lipophilic Planar Catechin Derivatives
    Ikuo Nakanishi, Nobuo Ikota, Tomonori Kawashima, Haruko Yakumaru, Hideko Kanazawa, Haruhiro Okuda, Kazunori Anzai, Toshihiko Ozawa, and Kiyoshi Fukuhara
    Free Radical Biol. Med., 37 (S1), S40 (2004).
  15. Radical-Scavenging Reactions of a Vitamin E Analogue in the Presence of a Metal Ion
    Ikuo Nakanishi, Kentaro Miyazaki, Kei Ohkubo, Yuko Iizuka, Keiko Inami, Shiro Urano, Haruhiro Okuda, Masataka Mochizuki, Shunichi Fukuzumi, Kiyoshi Fukuhara, Toshihiko Ozawa, and Nobuo Ikota
    "Advances in the Research of Vitamin E Volume XI," Japanese Vitamin E Research Association, Japan (2005), pp.17-22.
  16. Oxidation Behavior of a Vitamin E Analogue Anion
    Ikuo Nakanishi, Kentaro Miyazaki, Kei Ohkubo, Wataru Hakamata, Shiro Urano, Haruhiro Okuda, Shunichi Fukuzumi, Kiyoshi Fukuhara, Toshihiko Ozawa, and Nobuo Ikota
    "Advances in the Research of Vitamin E Volume XI," Japanese Vitamin E Research Association, Japan (2005), pp.90-95.
  17. Catalysis of Metal Ions in Radical-Scavenging Reactions by Phenolic Antioxidants in Protic Solvents
    Tomonori Kawashima, Ikuo Nakanishi, Minako Nyui, Kumiko Kawaguchi, Kei Ohkubo, Hideko Kanazawa, Haruhiro Okuda, Kiyoshi Fukuhara, Shunichi Fukuzumi, Toshihiko Ozawa, and Nobuo Ikota
    J. Pharm. Soc. Jpn., 125 (Suppl. 1), 88 (2005).
  18. Solvent Effect on the Radical-Scavenging Mechanism of a Vitamin E Model
    Tomonori Kawashima, Ikuo Nakanishi, Hideko Kanazawa, Haruhiro Okuda, Kiyoshi Fukuhara, Toshihiko Ozawa, and Nobuo Ikota
    "Proceeding of the 4th Annual Meeting of the Society for the Study of Anti-Oxidant Biofactor," (2005), in press.
  19. Development of Safe and Strong Antioxidative Supplements
    Ikuo Nakanishi
    Science & Technology Journal, 14 (8), 48-49 (2005).
  20. Scavenging Reaction of a Peroxyl Radical by a Nitroxide Radical via Electron Transfer
    Toshihiko Ozawa, Kumiko Kawaguchi, Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Hideko Kanazawa, Kazunori Anzai, Shunichi Fukuzumi, and Nobuo Ikota
    Lipid Peroxide Research, 29, 78 (2005).
  21. Base-Catalyzed Radical-Scavenging Reactions by Phenolic Antioxidants
    Tomonori Kawashima, Ikuo Nakanishi, Minako Nyui, Haruko Yakumaru, Kei Ohkubo, Hideko Kanazawa, Haruhiro Okuda, Shunichi Fukuzumi, Toshihiko Ozawa, Kiyoshi Fukuhara, and Nobuo Ikota
    Free Radical Biol. Med., 39 (S1), S33-S34 (2005).
  22. Scavenging Reaction of Cumylperoxyl Radical by Nitroxide Radicals via Electron Transfer
    Ikuo Nakanishi, Kumiko Kawaguchi, Kei Ohkubo, Tomonori Kawashima, Hideko Kanazawa, Kazunori Anzai, Shunichi Fukuzumi, Toshihiko Ozawa, and Nobuo Ikota
    Free Radical Biol. Med., 39 (S1), S38 (2005).
  23. Redox Behavior of Nitroxide Spin Probes in the Presence of Metal Ions
    Tomonori Kawashima, Ikuo Nakanishi, Kumiko Kawaguchi, Kei Ohkubo, Sushma Manda, Hideko Kanazawa, Kazunori Anzai, Shunichi Fukuzumi, Toshihiko Ozawa, and Nobuo Ikota
    J. Pharm. Soc. Jpn., 126 (Suppl. 1), P-14 (2006).
  24. Synthesis, Radical-Scavenging Activity, and Redox Behavior of Planar Catechin Derivatives
    Kiyoshi Fukuhara, Ikuo Nakanishi, Tomonori Kawashima, Ayako Tada, Haruko Yakumaru, Kei Ohkubo, Hideko Kanazawa, Shiro Urano, Haruhiro Okuda, Naoki Miyata, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, and Nobuo Ikota
    Free Radical Res., 40 (S1), S97 (2006).
  25. Kinetic Study on the Radical-Scavenging Activity of Natural Antioxidants Having 4-Propenylphenol Structures
    Tomonori Kawashima, Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Sushma Manda, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Keiko Suzuki, Hideko Nagasawa, Hitoshi Hori, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, and Nobuo Ikota
    Free Radical Res., 40 (S1), S102 (2006).
  26. Radical-Scavenging Activity of Nitroxide Radical as an Electron Donor
    Kumiko Kawaguchi, Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Sushma Manda, Hideko Kanazawa, Keizo Takeshita, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, and Nobuo Ikota
    Free Radical Res., 40 (S1), S165 (2006).
  27. Kinetic Study on the Radical-Scavenging Activity of Natural Antioxidants Having 4-Propenylphenol Structures
    Tomonori Kawashima, Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Sushma Manda, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Keiko Suzuki, Hideko Nagasawa, Hitoshi Hori, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, and Nobuo Ikota
    "XIII Congress of the Society for Free Radical Research International," International Proceedings, Medimond, Italy (2006), pp.199-201.
  28. Radical-Scavenging Activity of Nitroxyl Radical as an Electron Donor
    Sushma Manda, Kumiko Kawaguchi, Kei Ohkubo, Tomonori Kawashima, Hideko Kanazawa, Keizo Takeshita, Kazunori Anzai, Toshihiko Ozawa, Shunichi Fukuzumi, Nobuo Ikota, and Ikuo Nakanishi
    "XIII Congress of the Society for Free Radical Research International," International Proceedings, Medimond, Italy (2006), pp.237-239.
  29. Scavenging Activity of Cumylperoxyl Radical by Artepillin C and Its Derivatives
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Tomonori Kawashima, Sushma Manda, Hideko Kanazawa, Hideko Nagasawa, Hitoshi Hori, Haruhiro Okuda, Kiyoshi Fukuhara, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi, and Kazunori Anzai
    Lipid Peroxide Research, 30, 62 (2006).
  30. Radical-Scavenging Reactions of 4-Propenylphenol Derivatives
    Tomonori Kawashima, Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Sushma Manda, Keiko Suzuki, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Hideko Nagasawa, Hitoshi Hori, Kazunori Anzai, Toshihiko Ozawa, Nobuo Ikota, and Shunichi Fukuzumi
    Free Radical Biol. Med., 41 (S1), S23 (2006).
  31. DNA Cleaving-Activity of Water-Soluble C70 under Visible-Light Irradiation
    Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Kumiko Kawaguchi, Minako Nyui, Mitsuko Takusagawa, Sushma Manda, Tomoyoshi Suenobu, Kiyoshi Fukuhara, Haruhiro Okuda, Hideko Kanazawa, Naoki Miyata, Toshihiko Ozawa, Kazunori Anzai, Shunichi Fukuzumi, and Nobuo Ikota
    Free Radical Biol. Med., 41 (S1), S66 (2006).
  32. Base Catalysis in Radical-Scavenging Reactions by a Vitamin E Analogue
    Ikuo Nakanishi, Tomonori Kawashima, Kei Ohkubo, Hideko Kanazawa, Keiko Inami, Masataka Mochizuki, Kiyoshi Fukuhara, Haruhiro Okuda, Toshihiko Ozawa, Shinobu Itoh, Shunichi Fukuzumi, and Nobuo Ikota
    "Advances in the Research of Vitamin E Volume XII," Japanese Vitamin E Research Association, Japan (2006), pp.11-16.
  33. Radical-Scavenging Activities of 4-Propenylphenol Derivatives and a Vitamin E model
    Tomonori Kawashima, Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Hideko Nagasawa, Hitoshi Hori, Shunichi Fukuzumi, Toshihiko Ozawa, and Nobuo Ikota
    "Advances in the Research of Vitamin E Volume XII," Japanese Vitamin E Research Association, Japan (2006), pp.115-120.
  34. Enhanced Radical-Scavenging Activity of Artepillin C Derivatives
    Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Tomonori Kawashima, Sushma Manda, Hideko Kanazawa, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Toshihiko Ozawa, Nobuo Ikota, Shunichi Fukuzumi, and Kazunori Anzai
    FASEB J., 21 (6), lb373 (2007).
  35. Effects of Bio-Related Metal Ions on the Radical-Scavenging Reactions by Curcumin
    Tomonori Kawashima, Ikuo Nakanishi, Kei Ohkubo, Sushma Manda, Kiyoshi Fukuhara, Haruhiro Okuda, Toshihiko Ozawa, Nobuo Ikota, Kazunori Anzai, and Shunichi Fukuzumi
    J. Pharm. Soc. Jpn., 127 (Suppl. 2), 76 (2007).
  36. Electron-Transfer Mechanism in the Radical-Scavenging Reaction of Resveratrol
    Ikuo Nakanishi, Tomokazu Shimada, Kei Ohkubo, Sushma Manda, Shiro Urano, Haruhiro Okuda, Naoki Miyata, Toshihiko Ozawa, Kazunori Anzai, Shunichi Fukuzumi, Nobuo Ikota, and Kiyoshi Fukuhara
    Free Radical Biol. Med., 43 (S1), S17 (2007).
  37. Intramolecular Base-Accelerated Radical-Scavenging Reaction of a Planar Catechin Derivative Having a Lysine Moiety
    Kiyoshi Fukuhara, Ikuo Nakanishi, Miki Obara, Kei Ohkubo, Tomonori Kawashima, Toshihiko Ozawa, Nobuo Ikota, Kazunori Anzai, Shunichi Fukuzumi, Naoki Miyata, Shinichi Saito, and Haruhiro Okuda
    Free Radical Biol. Med., 43 (S1), S96 (2007).
  38. Radical-Scavenging Rates of Biosynthetic Precursors of Vitamin E and Their Acyclic Analogues
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Tadashi Shirai, Eiji Nakata, Hideko Nagasawa, Hitoshi Hori, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    J. Clin. Biochem. Nutr., 41 (Supplement), 140 (2007).
  39. Effect of Methyl Substitution of Antioxidative Properties and Genotoxicity of Resveratrol
    Kiyoshi Fukuhara, Ikuo Nakanishi, Atsuko Matsuoka, Toshihiko Ozawa, Naoki Miyata, Nobuo Ikota, and Haruhiro Okuda
    J. Clin. Biochem. Nutr., 41 (Supplement), 155 (2007).
  40. Effect of Metal Ions on the Radical-Scavenging Rates of Hydroquinones
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Tadashi Shirai, Eiji Nakata, Sushma Manda, Hideko Nagasawa, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Kazunori Anzai, and Toshihiko Ozawa
    J. Pharm. Soc. Jpn., 128 (Suppl. 1), 71 (2008).
  41. Scavenging Reactions of Free Radicals by Propenylphenol Compounds
    Tomonori Kawashima, Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Keiko Suzuki, Sushma Manda, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Hideko Nagasawa, Hitoshi Hori, Shunichi Fukuzumi, Kazunori Anzai, Toshihiko Ozawa, and Nobuo Ikota
    "Proceeding of the 6th Annual Meeting of the Society the the Study of Anti-Oxidant Biofactor," (2008), pp.20-23.
  42. Structure-Activity Relationship in Radical-Scavenging Reactions of Naturally-Oriented Artepillin C Derivatives
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Tomonori Kawashima, Sushma Manda, Ken-ichiro Matsumoto, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    Prog. Biochem. Biophys., 35 (Suppl), 290 (2008).
  43. Free Radical Reactions in an Aqueous Sample Caused by Heavy-Ion (Carbon) Beam Irradiation
    Ken-ichiro Matsumoto, Ikuo Nakanishi, Kazutoyo Endo, and Kazunori Anzai
    Free Radical Biol. Med., 45 (S1), S20 (2008).
  44. One-Step Hydrogen Atom Transfer in Radical-Scavenging Reactions by Artepillin C Derivatives Enhanced by Electron-Donating Groups
    Ikuo Nakanishi, Kei Ohkubo, Yoshihiro Uto, Tomonori Kawashima, Sushma Manda, Kiyoshi Fukuhara, Haruhiro Okuda, Hitoshi Hori, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    Free Radical Biol. Med., 45 (S1), S63 (2008).
    DOI: 10.1016/j.freeradbiomed.2008.10.010
    Released on October 28, 2008
  45. Synthesis and Radical-Scavenging Activity of Vitamin E Derivatives Having a Basic Moiety
    Ikuo Nakanishi, Tomonori Kawashima, Haruko Yakumaru, Minako Nyui, Kei Ohkubo, Hideko Kanazawa, Kiyoshi Fukuhara, Haruhiro Okuda, Shunichi Fukuzumi, Toshihiko Ozawa, Nobuo Ikota, Kazunori Anzai
    "Advances in the Research of Vitamin E Volume XIII," Japanese Vitamin E Research Association, Japan (2009), pp.7-10.
  46. Radical-Scavenging Rates of Biosynthetic Precursors of Vitamin E and Their Acyclic Analogues
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Tadashi Shirai, Eiji Nakata, Hideko Nagasawa, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    "Advances in the Research of Vitamin E Volume XIII," Japanese Vitamin E Research Association, Japan (2009), pp.83-87.
  47. Structure-Activity Relationship in Radical-Scavenging Reactions of Naturally-Oriented Artepillin C Derivatives
    Ikuo Nakanishi, Yoshihiro Uto, Kei Ohkubo, Tomonori Kawashima, Sushma Manda, Ken-ichiro Matsumoto, Hitoshi Hori, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    "XIV Biennial Meeting of the Society for Free Radical Research International," International Proceedings, Medimond, Italy (2009), pp.125-128.
  48. Development of Novel Scavengers against Reactive Oxygen Species and Free Radicals by Chemical Modification of Natural Antioxidants
    Ikuo Nakanishi
    Radiological Sciences, 52 (5), 17-19 (2009).
  49. Development of Vitamin E Derivatives with Enhanced Radical-Scavenging Activity
    Ikuo Nakanishi, Keiko Inami, Kei Ohkubo, Kiyoshi Fukuhara, Haruhiro Okuda, Nobuo Ikota, Shunichi Fukuzumi, Toshihiko Ozawa, Kazunori Anzai, and Masataka Mochizuki
    "Advances in the Research of Vitamin E Volume XIV," Japanese Vitamin E Research Association, Japan (2010), pp.7-12.
  50. Analysis of Reaction between Nitroxyl Radicals and Vitamin E
    Ken-ichiro Matsumoto, Minako Nyui, Ikuo Nakanishi, and Kazunori Anzai
    "Advances in the Research of Vitamin E Volume XIV," Japanese Vitamin E Research Association, Japan (2010), pp.93-98.
  51. Electron-Transfer Reduction by a Vitamin E Analogue Anion in an Aprotic Solvent
    Ikuo Nakanishi, Kei Ohkubo, Keiko Inami, Ken-ichiro Matsumoto, Masataka Mochizuki, A. K. M. Raushan Kabir Zoardar, Kiyoshi Fukuhara, Haruhiro Okuda, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    "Advances in the Research of Vitamin E Volume XIV," Japanese Vitamin E Research Association, Japan (2010), pp.113-118.
  52. Enhanced Radical Scavenging Activities of Catechin Derivatives Incorporating Basic Amino Acids
    Kiyoshi Fukuhara, Ikuo Nakanishi, Kohei Imai, Akiko Ohno, Kei Ohkubo, Shunichi Fukuzumi, Asao Nakamura, Kazunori Anzai, Naoki Miyata, and Haruhiro Okuda
    Abstracts of Papers of the American Chemical Society, 240, 75 (2010).
    Released: August 22, 2010
  53. Synthesis of Conformationally Constrained Epigallocatechin Analogue as a Promising Antioxidant
    Kohei Imai, Ikuo Nakanishi, Kazunori Anzai, Toshihiko Ozawa, Haruhiro Okuda, Asao Nakamura, and Kiyoshi Fukuhara
    Free Radical Biol. Med., 49 (S1), S185 (2010).
    DOI: 10.1016/j.freeradbiomed.2010.10.529
  54. Electron Transfer from Stable Superoxide Complex to Electron Acceptors as Benzoquinone Derivatives
    Tomonori Kawashima, Kei Ohkubo, Shunichi Fukuzumi, and Ikuo Nakanishi
    Free Radical Biol. Med., 49 (S1), S211 (2010).
    DOI: 10.1016/j.freeradbiomed.2010.10.614
  55. Reaction of Nitroxyl Radicals and GSH; pH Dependece
    Ken-ichiro Matsumoto, Ikuo Nakanishi, and Murali C Krishna
    Free Radical Biol. Med., 49 (S1), S212 (2010).10.1016/j.freeradbiomed.2010.10.619
  56. Electron-Transfer Properties of the Phenolate Anion Derived from a Vitamin E Model in the Presence of a Strong Base in an Aprotic Medium
    Ikuo Nakanishi, Kei Ohkubo, Tomonori Kawashima, Keiko Inami, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, Haruhiro Okuda, Masataka Mochizuki, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    Free Radical Biol. Med., 49 (S1), S213-S214 (2010).
    DOI: 10.1016/j.freeradbiomed.2010.10.623
  57. Radical-Scavenging Activity of 6-Chromanol Derivatives with Various Substituents
    Ikuo Nakanishi, Keiko Inami, Kei Ohkubo, Tomonori Kawashima, Kiyoshi Fukuhara, Shunichi Fukuzumi, Kazunori Anzai, Toshihiko Ozawa, Masataka Mochizuki, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 51 (S), S93 (2011).
    DOI: 10.1016/j.freeradbiomed.2011.10.455
  58. Efficient Method for Hydroxyl Radical Scavenging Activity of Antioxidants
    Ken-ichiro Matsumoto and Ikuo Nakanishi
    Free Radical Biol. Med., 51 (S), S147 (2011).
    DOI: 10.1016/j.freeradbiomed.2011.10.251
  59. Involvement of Electron Transfer in the Radical-Scavenging Reaction of Melatonin in a Protic Medium
    Ikuo Nakanishi, Masato Kamibayashi, Kei Ohkubo, A. K. M. Raushan Kabir Zoardar, Tomonori Kawashima, Kailash Manda, Ken-ichiro Matsumoto, Shunichi Fukuzumi, Toshihiko Ozawa, and Kazunori Anzai
    Free Radical Biol. Med., 53 (Supplement 1), S146-S147 (2012).
    DOI: 10.1016/j.freeradbiomed.2012.08.307
  60. Density of Hydroxyl Radical Generated in an Aqueous Solution Irradiated by Carbon Ion Beam
    Ken-ichiro Matsumoto, Ikuo Nakanishi, Megumi Ueno, and Kazunori Anzai
    Free Radical Biol. Med., 53 (Supplement 1), S204-S205 (2012).
    DOI: 10.1016/j.freeradbiomed.2012.08.429
  61. Synthesis of Catechin Derivative with Powerful Radical-Scavenging Activity
    Kohei Imai, Ikuo Nakanishi, Asao Nakamura, and Kiyoshi Fukuhara
    The Research Reports, Natural Sciences and Engineering, Shibaura Institute of Technology, 56 (2), 23-31 (2012).
  62. Methyl Analogs of Quercetin for Improved Radical-Scavenging Activities
    Kiyoshi Fukuhara, Kohei Imai, Ikuo Nakanishi, Akiko Ohno, Ken-ichiro Matsumoto, Asao Nakamura, and Masaaki Kurihara
    Abstracts of Papers of the American Chemical Society, 244, 408 (2012).
    Released on August 19, 2012
  63. Comparison of Blood-Brain-Barrier Permeable Nitroxyl Contrast Agents for Magnetic Resonance Brain RedOx Imaging
    Ken-ichiro Matsumoto, Megumi Ueno, Ikuo Nakanishi, Ken-ichi Yamada, and Ichio Aoki
    Free Radical Biol. Med., 53 (Supplement 2), S68-S69 (2012).
    DOI: 10.1016/j.freeradbiomed.2012.10.207
    Released on October 27, 2012
  64. Radical-Scavenging Reactions of Ascorbic Acid and Its Analogue in the Presence of a Redox-Inactive Metal Ion
    Ikuo Nakanishi, Keiko Inami, Shogo Nomura, Kei Ohkubo, Tomonori Kawashima, Masataka Mochizuki, Shunichi Fukuzumi, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 53 (Supplement 2), S151 (2012).
    DOI: 10.1016/j.freeradbiomed.2012.10.410
    Released on October 27, 2012
  65. Enhanced Radical-Scavenging Activities of C-Methylated Quercetin
    Kiyoshi Fukuhara, Kohei Imai, Ikuo Nakanishi, Akiko Ohno, Masaaki Kurihara, Ken-ichiro Matsumoto, and Asao Nakamura
    J. Clin. Biochem. Nutr., 54 (Supplement), 67 (2014).
  66. Radioprotective and Radiomitigable Activity Screening of Natural Antioxidants and the Quantitative Evaluation
    Emiko Sekine-Suzuki, Ikuo Nakanishi, Megumi Ueno, Yukihiro Ogawa, Tsukasa Waki, Takashi Shimokawa, Ken-ichiro Matsumoto, Kazunori Anzai, and Takeshi Murakami
    J. Clin. Biochem. Nutr., 54 (Supplement), 73 (2014).
  67. Quantifying Radiobiological Effect Irradiated by Based on Amount of Melanin Radica in Mouse Tail Skin
    Yukihiro Ogawa, Megumi Ueno, Emiko Sekine, Ikuo Nakanishi, Ken-ichiro Matsumoto, and Shingo Fujisaki
    J. Clin. Biochem. Nutr., 54 (Supplement), 74 (2014).
  68. Metal Ions with Lewis Acidity Catalyze the Disproportionation of the 2,2-Diphenyl-1-picrylhydrazyl Radical in an Aprotic Medium
    Tsukasa Waki, Ikuo Nakanishi, Kei Ohkubo, Shunichi Fukuzumi, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Tadashi Kamada
    J. Clin. Biochem. Nutr., 54 (Supplement), 80 (2014).
  69. Rho0 Cells Are Susceptible to X-Irradiation
    Hiroko P. Indo, Chizuru Tsuruoka, Shizuko Kakinuma, Masao Suzuki, Ken-ichiro Matsumoto, Ikuo Nakanishi, Hsiu-Chuan Yen, Hirofumi Matsui, Toshihiko Ozawa, and Hideyuki J. Majima
    J. Clin. Biochem. Nutr., 54 (Supplement), 134 (2014).
  70. 2,2-Diphenyl-1-picrylhydrazyl Radical Solubilized by beta-Cyclodextrin in Water for Evaluation of Radical-Scavenging Activity of Antioxidants in Aqueous Systems
    Ikuo Nakanishi, Kohei Imai, Kiyoshi Fukuhara, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 76 (Supplement 1), S142 (2014).
    DOI: 10.1016/j.freeradbiomed.2014.10.119
    Released on November 9, 2014
  71. Reactivity of 2,2-Diphenyl-1-picrylhydrazyl Radical Solubilized in Water by beta-Cyclodextrin and Its Derivatives
    Ikuo Nakanishi, Kei Ohkubo, Yukihiro Ogawa, Masato Kamibayashi, Toshihiko Ozawa, Shunichi Fukuzumi, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 87 (Supplement 1), S124 (2015).
    DOI: 10.1016/j.freeradbiomed.2015.10.324
    Released on December 5, 2015
  72. Solubilization of 2,2-Diphenyl-1-picrylhydrazyl Radical in Water to Evaluate the Activity of Water-Soluble Antioxidants
    Ikuo Nakanishi, Emiko Sekine-Suzuki, Megumi Ueno, Minako Nyui, and Ken-ichiro Matsumoto
    "National Institute of Radiological Sciences Annual Report 2015," National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan (2016), pp.24-25.
    PDF
  73. Role of Mitochondrial Reactive Oxygen Species in the Activation of Cellular Signals, Molecules, and Funcion
    Hiroko P. Indo, Clare L. Hawkins, Ikuo Nakanishi, Ken-ichiro Matsumoto, Hirofumi Matasui, Shigeaki Suenaga, Michael J. Davies, Daret K. St Clair, Toshihiko Ozawa, and Hideyuki J. Majima
    "Pharmacology of MItchondria. Handbook of Experimental Pharmacology, Vol. 240," ed by Harpreet Singh and Shey-Shing Sheu, Springer, Cham (2017), pp.439-456.
    DOI: 10.1007/164_2016_117
    Released on February 8, 2017
  74. EPR Based Estimation of Radiation-Induced Reactive Oxygen Species
    Ken-ichiro Matsumoto, Megumi Ueno, Minako Nyui, Yukihiro Ogawa, Masato Kamibayashi, Emiko Sekine-Suzuki, Ikuo Nakanishi, Kazunori Anzai, and Toshihiko Ozawa
    Free Radical Biol. Med., 100 (Supplement), S27 (2016).
    DOI: 10.1016/j.freeradbiomed.2016.10.066
    Released on March 7, 2017
  75. Redox Behavior of 2,2-Diphenyl-1-picrylhydrazyl Radical (DPPH(center dot)) Solubilized in Water by beta-Cyclodextrin
    Ikuo Nakanishi, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 100 (Supplement), S27-S28 (2016).
    DOI: 10.1016/j.freeradbiomed.2016.10.068
    Released on March 7, 2017
  76. Synthesis of Aminoquercetin for Reducing Side Effects of Cancer Radiation Therapy
    Kohei Imai, Ikuo Nakanishi, Nachi Yamamoto, Ken-ichiro Matsumoto, and Kiyoshi Fukuhara
    Free Radical Biol. Med., 100 (Supplement), S100 (2016).
    DOI: 10.1016/j.freeradbiomed.2016.10.252
    Released on March 7, 2017
  77. LET Dependent Hydroxyl Radical Generation in Water by Heavy-Ion Beam Irradiation
    Yukihiro Ogawa, Emiko Skine-Suzuki, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 112 (Supplement 1), 63 (2017).
    DOI: 10.1016/j.freeradbiomed.2017.10.088
    Released on November, 2017
  78. Reaction of Glutathione and Bio-Related Thiols with 2,2-Diphenyl-1-picrylhydrazyl Radical Solubilized by beta-Cyclodextrin in Water
    Ikuo Nakanishi, Kei Ohkubo, Megumi Ueno, Emiko Sekine-Suzuki, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 120 (Supplement 1), S94 (2018).
    DOI: 10.1016/j.freeradbiomed.2018.04.311
    Released on May 20, 2018
  79. Preparation of Selenium-Deficient Mouse Model and Its Glutathione Peroxidase Activity
    Megumi Ueno, Minako Nyui, Emiko Skine-Suzuki, Takashi Shimokawa, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 120 (Supplement 1), S141 (2018).
    DOI: 10.1016/j.freeradbiomed.2018.04.464
    Released on May 20, 2018
  80. Design and Synthesis of Proanthocyanidin Derivatives as an Inhibitor of Amyloid Beta Aggregation
    Mirei Mizuno, Kazunori Mori, Ikuo Nakanishi, Ken-ichiro Matsumoto, Motoko Shibanuma, and Kiyoshi Fukuhara
    Abstracts of Papers of the American Chemical Society, 256, 96 (2018).
    Released on August 19, 2018
  81. Comparison of Sample Tubes for the X-band EPR Measurement of an Aqueous Sample: Effects on Reproducibility of Signal Intensities
    Yusuke Makino, Ikuo Nakanishi, Koji Fukui, Murari Krishna Cherukuri, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 128 (Supplement 1), S55-S56 (2018).
    DOI: 10.1016/j.freeradbiomed.2018.10.103
    Released on November 1, 2018
  82. Comparison of Effects of Plateau Carbon-Ion Beams and X-rays on the Redox States of Aqueous and Organic Solutions of 2,2-Diphyenyl-1-picrylhydrazyl Radical
    Ikuo Nakanishi, Takashi Shimokawa, Megumi Ueno, Yusuke Makino, Koji Fukui, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 128 (Supplement 1), S56 (2018).
    DOI: 10.1016/j.freeradbiomed.2018.10.105
    Released on November 1, 2018
  83. EVALUATION OF THE RADICAL-SCAVENGING ACTIVITY OF ANTIOXIDANTS IN WATER USING A WATER-SOLUBILIZED 2,2-DIPHENYL-1-PICRYLHYDRAZYL RADICAL
    Ikuo Nakanishi, Kei Ohkubo, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Mong. J. Phys., 5, 67-71 (2019).
    Released on April 16, 2019
  84. Effects of Extremely Small Doses, 100 mGy a Day, Five Times a Week, Total of Twelve Weeks of Low-Dose Fractionated X-irradiation on Mice Hair Root
    Hideyuki Majima, Hiromu Ito, Tomoko Fukushige, Hiroko Indo, Yoshihiro Kawabata, Ken-ichiro Matsumoto, Ikuo Nakanishi, Akihide Tanimoto, Takuro Kanekura, Clare Hawkins, Michael Davies, William St. Clair, and Daret St. Clair
    Free Radical Biol. Med., 145 (Supplement 1), S31-S32 (2019).
    DOI: 10.1016/j.freeradbiomed.2019.10.079
    Released on November 15, 2019
  85. Quantification of X-ray Induced Hydrogen Radicals in an Aqueous Solution Using EPR Spin-Trapping
    Yusuke Makino, Emiko Sekine-Suzuki, Minako Nyui, Megumi Ueno, Ikuo Nakanishi, Koji Fukui, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 145 (Supplement 1), S32 (2019).
    DOI: 10.1016/j.freeradbiomed.2019.10.080
    Released on November 15, 2019
  86. Presence of X-ray Induced High Concentrated Hydrogen Peroxide Clusters
    Megumi Ueno, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 145 (Supplement 1), S33 (2019).
    DOI: 10.1016/j.freeradbiomed.2019.10.082
    Released on November 15, 2019
  87. Kinetic Isotope Effect in the Reaction of Water-Soluble Antioxidants with Water-Solubilized 2,2-Diphenyl-1-picrylhydrazyl Radical in Aqueous Buffer Solutions
    Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 145 (Supplement 1), S34 (2019).
    DOI: 10.1016/j.freeradbiomed.2019.10.086
    Released on November 15, 2019
  88. Oxygen-Independent Generation of Hydrogen Peroxide in Water Irradiated by Carbon-Ion Beam
    Megumi Ueno, Minako Nyui, Yoshimi Shoji, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 159 (Supplement 1), S27-S28 (2020).
    DOI: 10.1016/j.freeradbiomed.2020.10.083
    Released on November 1, 2020
  89. Mechanism of the Scavenging Reaction of a Nitronyl Nitroxide Radical by Ascorbic Acid in Phosphate Buffer Solutions
    Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi
    Free Radical Biol. Med., 159 (Supplement 1), S30 (2020).
    DOI: 10.1016/j.freeradbiomed.2020.10.089
    Released on November 1, 2020
  90. Effect of Longitudinal Magnetic Field to the Linear Particle-Beam Track on Yields of Hydroxyl Radical and Hydrogen Peroxide in Water
    Ken-ichiro Matsumoto, Ikuo Nakanishi, Yasushi Abe, Shinji Sato, Masayuki Muramatsu, Ryosuke Kohno, Dousatsu Sakata, Kota Mizushima, Hideyuki Mizuno, and Taku Inaniwa
    Free Radical Biol. Med., 165 (Supplement 1), 28-29 (2021).
    DOI: 10.1016/j.freeradbiomed.2020.12.328
    Released on March, 2021
  91. Oxygen Independent Generation of Hydrogen Peroxide in Water Irradiated by Carbon-Ion Beam
    Megumi Ueno, Minako Nyui, Ikuo Nakanishi, and Ken-ichiro Matsumoto
    Free Radical Biol. Med., 165 (Supplement 1), 55 (2021).
    DOI: 10.1016/j.freeradbiomed.2020.12.420
    Released on March, 2021
  92. Effect of Reaction Media on the Scavenging Reaction of Water-Solubilized 2,2-Diphenyl-1-picrylhydrzyl Radical by Ascorbic Acid
    Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi
    Free Radical Biol. Med., 165 (Supplement 1), 55-56 (2021).
    DOI: 10.1016/j.freeradbiomed.2020.12.422
    Released on March, 2021
  93. Initial Molecular Geometry of Radiation-Induced Reactive Species in Water
    Ken-ichiro Matsumoto, Megumi Ueno, Yoshimi Shoji, and Ikuo Nakanishi
    Free Radical Biol. Med., 180 (Supplement 1), S63-S64 (2022).
    DOI: 10.1016/j.freeradbiomed.2021.12.145
    Released on February 20, 2022
  94. pH Effect on the Scavenging Reaction of Ascorbic Acid against Selected Radicals in Phosphate Buffer Solutions
    Ikuo Nakanishi, Yoshimi Shoji, Kei Ohkubo, Toshihiko Ozawa, Ken-ichiro Matsumoto, and Shunichi Fukuzumi
    Free Radical Biol. Med., 180 (Supplement 1), S64 (2022).
    DOI: 10.1016/j.freeradbiomed.2021.12.146
    Released on February 20, 2022
  95. On 'Spin Trapping of Superoxide and Hydroxyl Radical: Practical Aspect' by Eli Finkelstein, Gerald M. Rosen and Elmer J. Rauckman
    Toshihiko Ozawa* and Ikuo Nakanishi
    Arch. Biochem. Biophys., 726, 109191 (2022).
    DOI: 10.1016/j.abb.2022.109191
    PMID: 35318035
    Released on March 19, 2022
  96. Adjunctive Effects with Continual X-ray Irradiation for Effective Photodynamic Therapy
    Hiromu Ito and Ikuo Nakanishi
    Free Radical Biol. Med., 192 (Supplement 1), 125 (2022).
    DOI: 10.1016/j.freeradbiomed.2022.10.231
    Released on November 1, 2022
  97. Evaluation of Redox Responses of Mouse Colorectum Tissue after X-ray Irradiation
    Megumi Ueno, Raj Kumar Parajuli, Hiromu Ito, Megumi Iiyama, Saaya Suzuki, Ken-ichiro Matsumoto, Ikuo Nakanishi, Ichio Aoki, and Akira Sumiyoshi
    Free Radical Biol. Med., 192 (Supplement 1), 128-129 (2022).
    DOI: 10.1016/j.freeradbiomed.2022.10.238
    Released on November 1, 2022
  98. pH Effect on the Kinetic Isotope Effect in the Hydrogen Transfer from Trolox to Water-Solubilized 2,2-Diphenyl-1-picrylhydrazyl Radical in Phosphate Buffer Solutions
    Ikuo Nakanishi, Yoshimi Shoji, and Kei Ohkubo
    Free Radical Biol. Med., 192 (Supplement 1), 131 (2022).
    DOI: 10.1016/j.freeradbiomed.2022.10.243
    Released on November 1, 2022
  99. Analysis of a Planar Catechin Analog on Cancer Cellular Inhibition
    Hiromu Ito, Yoshimi Shoji, Ken-ichiro Matsumoto, Kiyoshi Fukuhara, and Ikuo Nakanishi
    Free Radical Biol. Med., 208 (Supplement 1), S124-S125 (2023).
    DOI: 10.1016/j.freeradbiomed.2023.10.283
    Released on November 1, 2023
  100. Radiation Damage and Oxidative Stress
    Ken-ichiro Matsumoto, Ikuo Nakanishi, and Hiromu Ito
    Journal of Clinical and Experimental Medicine (IGAKU NO AYUMI), 289 (4), 271-274 (2024).
    Released on April 27, 2024
  101. Antioxidant Activity of Planar Catechin Conjugated with Trolox
    Wakana Shimizu, Yoshimi Shoji, Kei Ohkubo, Hiromu Ito, Ikuo Nakanishi,* and Kiyoshi Fukuhara*
    Preprints, 2024081751 (2024). Open access
    DOI: 10.20944/preprints202408.1751.v1
    Released on August 23, 2024
A W A R D S
  1. The SFRR Japan Award of Scientific Excellence (June 27, 2019) Society for Free Radical Research Japan (SFRR Japan), Sapporo, Japan
  2. High Citation Award (May, 2018) Society for Free Radical Research Japan (SFRR Japan), Kyoto, Japan
  3. High Citation Award (June, 2017) Society for Free Radical Research Japan (SFRR Japan), Tsukuba, Japan
  4. Highlight (Poster) (March, 2014) The 134th Annual Meeting of the Pharmaceutical Society of Japan, Kumamoto, Japan
  5. Highlight (Poster) (March, 2013) The 133rd Annual Meeting of the Pharmaceutical Society of Japan, Yokohama, Japan
  6. Highlight (Poster) (March, 2012) The 132nd Annual Meeting of the Pharmaceutical Society of Japan, Sapporo, Japan
  7. Highlight (Oral) (March, 2012) The 132nd Annual Meeting of the Pharmaceutical Society of Japan, Sapporo, Japan
  8. Highlight (Oral) (March, 2011) The 131st Annual Meeting of the Pharmaceutical Society of Japan, Shizuoka, Japan
  9. The SPACC Young Investigator Award (October 14, 2010) The 17th International SPACC Symposium, Kagoshima, Japan
  10. Young Investigator Award (June 19, 2009) 9th Annual Meeting of the Society for the Study of Anti-Oxidant Biofactor, Kyoto, Japan
  11. SFRR Japan Young Investigator Award 2008 (October 21, 2008) The XIV Biennial Meeting of the Society for Free Radical Research International (SFRRI) (14th SFRR), Beijing, China
  12. Young Investigator Award (October 2, 2008) The 47th Annual Meeting of the Society of Electron Spin Science and Technology (SEST), Fukuoka, Japan
  13. Highlight (Poster) (March, 2008) The 128th Annual Meeting of the Pharmaceutical Society of Japan, Yokohama, Japan
  14. Poster Award (November 30, 2007) International Conference on Food Factors for Health Promotion (ICoFF2007), Kyoto, Japan
  15. SFRR Japan Young Investigator Award 2006 (August 18, 2006) 13th Biennial Congress of the Society for Free Radical Research International (SFRRI), Davos, Switzerland
  16. The SFRR Japan Award for Young Scientists (June 28, 2003) Society for Free Radical Research Japan (SFRR Japan), Tokyo, Japan
  17. Highlight (Poster) (March, 2000) The 120th Annual Meeting of the Pharmaceutical Society of Japan, Gifu, Japan
DOCTORAL THESIS

Base Catalysis in Electron Transfer Mechanisms
DOI: 10.11501/3155332
Full text in PDF format (6.6 MB) is available from Osaka University Library.

Copyright (C) 1997-2024 ikuo.com. All Rights Resereved.