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1

ChemInform Abstract: Hydrolysable Tannins Isolated from Syzygium aromaticum: Structure of a New C-Glucosidic Ellagitannin and Spectral Features of Tannins with a Tergalloyl Group

Li-Ming Bao, Eerdunbayaer Eerdunbayaer, Akiko Nozaki, Eizo Takahashi, Keinosuke Okamoto, Hideyuki Ito, Tsutomu Hatano

Journal:

Year:

2012

File:

PDF, 25 KB

2012

2

Hydrolysable Tannins Isolated from Syzygium aromaticum: Structure of a New C-Glucosidic Ellagitannin and Spectral Features of Tannins with a Tergalloyl Group

Hatano, Tsutomu, Eerdunbayaer, _, Nozaki, Akiko, Takahashi, Eizo, Okamoto, Keinosuke, Ito, Hideyuki, Bao, Li-Ming

Journal:

Year:

2012

Language:

english

File:

PDF, 829 KB

english, 2012

3

Design and synthesis of benzenesulfonanilides active against methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus

Kensuke Namba, Xiaoxia Zheng, Kazunori Motoshima, Hidetomo Kobayashi, Akihiro Tai, Eizo Takahashi, Kenji Sasaki, Keinosuke Okamoto, Hiroki Kakuta

Journal:

Bioorganic & Medicinal Chemistry

Year:

2008

Language:

english

File:

PDF, 781 KB

english, 2008

4

A pore-forming toxin produced by Aeromonas sobria activates cAMP-dependent Cl− secretory pathways to cause diarrhea

Naomi Tanoue, Akira Takahashi, Keinosuke Okamoto, Yoshio Fujii, Yutaka Taketani, Nagakatsu Harada, Masayuki Nakano, Yutaka Nakaya

Journal:

FEMS Microbiology Letters

Year:

2005

Language:

english

File:

PDF, 304 KB

english, 2005

5

Modulation of Brucella-induced macropinocytosis by lipid rafts mediates intracellular replication

Masahisa Watarai, Sou-ichi Makino, Yoshio Fujii, Keinosuke Okamoto, Toshikazu Shirahata

Journal:

Cellular Microbiology

Year:

2002

Language:

english

File:

PDF, 1.58 MB

english, 2002

6

Emerging trends in the etiology of enteric pathogens as evidenced from an active surveillance of hospitalized diarrhoeal patients in Kolkata, India

Gopinath Balakrish Nair, Thandavarayan Ramamurthy, Mihir Kumar Bhattacharya, Triveni Krishnan, Sandipan Ganguly, Dhira Rani Saha, Krishnan Rajendran, Byomkesh Manna, Mrinmoy Ghosh, Keinosuke Okamoto,

Journal:

Year:

2010

Language:

english

File:

PDF, 2.64 MB

english, 2010

7

Studies on diarrheagenic Escherichia coli isolated from children with diarrhea in Myanmar

Eizo Takahashi, Zafar Sultan, Sumika Shimada, Wah Wah Aung, Mar Mar Nyein, Khin Nwe Oo, Gopinath Balakrish Nair, Yoshifumi Takeda, Keinosuke Okamoto

Journal:

Microbiology and Immunology

Year:

2008

Language:

english

File:

PDF, 503 KB

english, 2008

8

Isolation of tetracycline-resistant clinical Helicobacter pylori without mutations in 16S rRNA gene in Bangladesh

Rasel Khan, Shamsun Nahar, Asish K. Mukhopadhyay, Douglas E. Berg, Mian Mashhud Ahmad, Keinosuke Okamoto, G. Balakrish Nair, Motiur Rahman

Journal:

Microbiology and Immunology

Year:

2008

Language:

english

File:

PDF, 112 KB

english, 2008

9

The carboxy-terminal tail of Aeromonas sobria serine protease is associated with the chaperone

Hidetomo Kobayashi, Arisa Tateishi, Hideaki Tsuge, Eizo Takahashi, Keinosuke Okamoto, Hiroyasu Yamanaka

Journal:

Microbiology and Immunology

Year:

2009

Language:

english

File:

PDF, 412 KB

english, 2009

10

Maturation pathway of metalloprotease produced by Aeromonas sobria

Eizo Takahashi, Yoshio Fujii, Hidetomo Kobayashi, Hiroyasu Yamanaka, Gopinath Balakrish Nair, Yoshifumi Takeda, Sakae Arimoto, Tomoe Negishi, Keinosuke Okamoto

Journal:

Microbiology and Immunology

Year:

2010

Language:

english

File:

PDF, 421 KB

english, 2010

11

Inhibition of biosynthesis of metalloprotease of Aeromonas sobria by sodium chloride in the medium

Eizo Takahashi, Hidetomo Kobayashi, Hiroyasu Yamanaka, Gopinath Balakrish Nair, Yoshifumi Takeda, Sakae Arimoto, Tomoe Negishi, Keinosuke Okamoto

Journal:

Microbiology and Immunology

Year:

2011

Language:

english

File:

PDF, 282 KB

english, 2011

12

Cross-neutralization of heat-stable enterotoxin activity of enterotoxigenic Escherichia coli and of Yersinia enterocolitica

Keinosuke Okamoto, Akio Miyama, Tae Takeda, Yoshifumi Takeda, Toshio Miwatani

Journal:

FEMS Microbiology Letters

Year:

1983

Language:

english

File:

PDF, 188 KB

english, 1983

13

Biological activity of synthetic peptides analogous to heat-stable enterotoxin produced by Yersinia enterocolitica

Takashi Inoue, Jun Yukitake, Susumu Hara, Keinosuke Okamoto, Akio Miyama

Journal:

FEMS Microbiology Letters

Year:

1986

Language:

english

File:

PDF, 182 KB

english, 1986

14

Action of Escherichia coli heat-stable enterotoxin II on isolated sections of mouse ileum

Shunji Hitotsubashi, Masaaki Akagi, Akihiko Saitou, Hiroyasu Yamanaka, Uoshio Fujii, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

1992

Language:

english

File:

PDF, 253 KB

english, 1992

15

Enterotoxicity and immunological properties of two mutant forms of Escherichia coli STIp with lysine or arginine substituted for the asparagine residue at position 11

Keinosuke Okamoto, Jun Yukitake, Kyoko Okamoto, Akio Miyama

Journal:

FEMS Microbiology Letters

Year:

1992

Language:

english

File:

PDF, 363 KB

english, 1992

16

Production of heat-stable enterotoxin II by chicken clinical isolates of Escherichia coli

Noriko Akashi, Shunji Hitotsubashi, Hiroyasu Yamanaka, Yoshio Fujii, Takao Tsuji, Akio Miyama, Josephine Encarnacion Joya, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

1993

Language:

english

File:

PDF, 330 KB

english, 1993

17

Roles of the carboxy-terminal region of Clostridium perfringens alpha toxin

Masahiro Nagahama, Hiroshi Iida, Eri Nishioka, Keinosuke Okamoto, Jun Sakurai

Journal:

FEMS Microbiology Letters

Year:

1994

Language:

english

File:

PDF, 305 KB

english, 1994

18

Binding protein for Escherichia coli heat-stable enterotoxin II in mouse intestinal membrane

Shunji Hitotsubashi, Yoshio Fujii, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

1994

Language:

english

File:

PDF, 430 KB

english, 1994

19

Involvement of prostaglandin E2 synthesis in the intestinal secretory action of Escherichia coli heat-stable enterotoxin II

Yoshio Fujii, Yukiko Kondo, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

1995

Language:

english

File:

PDF, 685 KB

english, 1995

20

Hemolysin of Aeromonas sobria stimulates production of cyclic AMP by cultured cells

Yoshio Fujii, Tomohiko Nomura, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

1999

Language:

english

File:

PDF, 234 KB

english, 1999

21

Induction of an outer membrane protein of 78 kDa in Vibrio vulnificus cultured in the presence of desferrioxamine B under iron-limiting conditions

Hiroaki Aso, Shin-ichi Miyoshi, Hiroshi Nakao, Keinosuke Okamoto, Shigeo Yamamoto

Journal:

FEMS Microbiology Letters

Year:

2002

Language:

english

File:

PDF, 235 KB

english, 2002

22

Cleavage specificity of the serine protease of Aeromonas sobria, a member of the kexin family of subtilases

Hidetomo Kobayashi, Eizo Takahashi, Keiji Oguma, Yoshio Fujii, Hiroyasu Yamanaka, Tomoe Negishi, Sakae Arimoto-Kobayashi, Takao Tsuji, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

2006

Language:

english

File:

PDF, 123 KB

english, 2006

23

Aeromonas sobria hemolysin causes diarrhea by increasing secretion of HCO3−

Akira Takahashi, Masayuki Nakano, Keinosuke Okamoto, Yoshio Fujii, Kazuaki Mawatari, Nagakatsu Harada, Yutaka Nakaya

Journal:

FEMS Microbiology Letters

Year:

2006

Language:

english

File:

PDF, 93 KB

english, 2006

24

Impaired plasma clottability induction through fibrinogen degradation by ASP, a serine protease released from Aeromonas sobria

Takahisa Imamura, Hidetoshi Nitta, Yoshihiro Wada, Hidetomo Kobayashi, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

2008

Language:

english

File:

PDF, 213 KB

english, 2008

25

Binding of MutS protein to oligonucleotides containing a methylated or an ethylated guanine residue, and correlation with mutation frequency

Kentaro Taira, Shintaro Nakamura, Khota Nakano, Daisuke Maehara, Keinosuke Okamoto, Sakae Arimoto, David Loakes, Leroy Worth Jr, Roel M. Schaaper, Kohji Seio, Mitsuo Sekine, Kazuo Negishi, Tomoe Negis

Journal:

Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis

Year:

2008

Language:

english

File:

PDF, 602 KB

english, 2008

26

Inhibition of human cytochrome P450 1B1, 1A1 and 1A2 by antigenotoxic compounds, purpurin and alizarin

Eizo Takahashi, Ken-ichi Fujita, Tetsuya Kamataki, Sakae Arimoto-Kobayashi, Keinosuke Okamoto, Tomoe Negishi

Journal:

Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis

Year:

2002

Language:

english

File:

PDF, 166 KB

english, 2002

27

Development of a sensitive rRNA-targeted reverse transcription-quantitative polymerase chain reaction for detection of Vibrio cholerae/mimicus, V. parahaemolyticus/alginolyticus and Campylobacter jejuni/coli

Takashi Kurakawa, Hiroyuki Kubota, Hirokazu Tsuji, Kazunori Matsuda, Takashi Asahara, Takuya Takahashi, Thandavarayan Ramamurthy, Takashi Hamabata, Eizo Takahashi, Shin-ichi Miyoshi, Keinosuke Okamoto

Journal:

Microbiology and Immunology

Year:

2012

Language:

english

File:

PDF, 740 KB

english, 2012

28

Production and properties of lipase of Aeromonas sobria

Eizo Takahashi, Hidenobu Ito, Hidetomo Kobayashi, Hiroyasu Yamanaka, Yoshifumi Takeda, Gopinath Balakrish Nair, Sakae Arimoto, Tomoe Negishi, Keinosuke Okamoto

Journal:

Microbiology and Immunology

Year:

2012

Language:

english

File:

PDF, 989 KB

english, 2012

29

Involvement of glutamic acid residue at position 7 in the formation of the intramolecular disulfide bond ofEscherichia coliheat-stable enterotoxin Ipin vivo

Hiroyasu Yamanaka, Tomohiko Nomura, Keinosuke Okamoto

Journal:

Microbial Pathogenesis

Year:

1998

Language:

english

File:

PDF, 516 KB

english, 1998

30

Need for TolC, anEscherichia coliouter membrane protein, in the secretion of heat-stable enterotoxin I across the outer membrane

Hiroyasu Yamanaka, Tomohiko Nomura, Yoshio Fujii, Keinosuke Okamoto

Journal:

Microbial Pathogenesis

Year:

1998

Language:

english

File:

PDF, 786 KB

english, 1998

31

Carboxy terminal region of haemolysin of Aeromonas sobria triggers dimerization

Tomohiko Nomura, Hajime Hamashima, Keinosuke Okamoto

Journal:

Microbial Pathogenesis

Year:

2000

Language:

english

File:

PDF, 448 KB

english, 2000

32

Site-directed mutagenesis studies of the amino acid residue at position 412 of Escherichia coli TolC which is required for the activity

Hiroyasu Yamanaka, Tomohiko Nomura, Naoyuki Morisada, Sumio Shinoda, Keinosuke Okamoto

Journal:

Microbial Pathogenesis

Year:

2002

Language:

english

File:

PDF, 241 KB

english, 2002

33

Effect of aflatoxin B1 on UDP-glucuronosyltransferase mRNA expression in HepG2 cells

Nobumitsu Hanioka, Yuko Nonaka, Keita Saito, Tomoe Negishi, Keinosuke Okamoto, Hiroyuki Kataoka, Shizuo Narimatsu

Journal:

Year:

2012

Language:

english

File:

PDF, 288 KB

english, 2012

34

Placental and intestinal alkaline phosphatases are receptors for Aeromonas sobria hemolysin

Akihiro Wada, Ai-Ping Wang, Hajime Isomoto, Yoshinori Satomi, Toshifumi Takao, Akira Takahashi, Shizuka Awata, Tomohiko Nomura, Yoshio Fujii, Shigeru Kohno, Keinosuke Okamoto, Joel Moss, José Luis Mil

Journal:

International Journal of Medical Microbiology

Year:

2005

Language:

english

File:

PDF, 424 KB

english, 2005

35

A pore-forming toxin produced by Aeromonas sobria activates Ca2+ dependent Cl− secretion

Akira Takahashi, Naomi Tanoue, Masayuki Nakano, Akiko Hamamoto, Keinosuke Okamoto, Yoshio Fujii, Nagakatsu Harada, Yutaka Nakaya

Journal:

Microbial Pathogenesis

Year:

2005

Language:

english

File:

PDF, 155 KB

english, 2005

36

Studies on the region involved in the transport activity of Escherichia coli TolC by chimeric protein analysis

Hiroyasu Yamanaka, Satoshi Tadokoro, Masaya Miyano, Eizo Takahashi, Hidetomo Kobayashi, Keinosuke Okamoto

Journal:

Microbial Pathogenesis

Year:

2007

Language:

english

File:

PDF, 450 KB

english, 2007

37

Novel antimutagenic factors derived from the edible mushroom Agrocybe cylindracea

Kentaro Taira, Yukiko Miyashita, Keinosuke Okamoto, Sakae Arimoto, Eizo Takahashi, Tomoe Negishi

Journal:

Mutation Research/Genetic Toxicology and Environmental Mutagenesis

Year:

2005

Language:

english

File:

PDF, 232 KB

english, 2005

38

Involvement of the drug efflux protein TolC in mutagenicity induced by MNNG or Trp-P-2

Eizo Takahashi, Keinosuke Okamoto, Sakae Arimoto, Hiroyasu Yamanaka, Tomoe Negishi

Journal:

Mutation Research/Genetic Toxicology and Environmental Mutagenesis

Year:

2006

Language:

english

File:

PDF, 336 KB

english, 2006

39

Enhancement of phase II enzyme activity by purpurin resulting in the suppression of MeIQx–DNA-adduct formation in mice

Eizo Takahashi, Sakae Arimoto, Keinosuke Okamoto, Tomoe Negishi

Journal:

Mutation Research/Genetic Toxicology and Environmental Mutagenesis

Year:

2007

Language:

english

File:

PDF, 297 KB

english, 2007

40

Induction of an outer membrane protein of 78 kDa in Vibrio vulnificus cultured in the presence of desferrioxamine B under iron-limiting conditions

Hiroaki Aso, Shin-ichi Miyoshi, Hiroshi Nakao, Keinosuke Okamoto, Shigeo Yamamoto

Journal:

FEMS Microbiology Letters

Year:

2002

Language:

english

File:

PDF, 238 KB

english, 2002

41

Hemolysin of Aeromonas sobria stimulates production of cyclic AMP by cultured cells

Yoshio Fujii, Tomohiko Nomura, Keinosuke Okamoto

Journal:

FEMS Microbiology Letters

Year:

1999

Language:

english

File:

PDF, 236 KB

english, 1999

42

Activation of prothrombin by ASP, a serine protease released from Aeromonas sobria

Hidetoshi Nitta, Hidetomo Kobayashi, Atsushi Irie, Hideo Baba, Keinosuke Okamoto, Takahisa Imamura

Journal:

Year:

2007

Language:

english

File:

PDF, 145 KB

english, 2007

43

The tail nick augments Aeromonas sobria serine protease (ASP) activity in plasma through retarding inhibition by α2-macroglobulin

Yoji Murakami, Yoshihiro Wada, Hidetomo Kobayashi, Makoto Hasegawa, Keinosuke Okamoto, Masatoshi Eto, Takahisa Imamura

Journal:

Year:

2012

Language:

english

File:

PDF, 613 KB

english, 2012

44

Alternative methods to evaluate the protective ability of sunscreen against photo-genotoxicity

Megumi Toyoshima, Kanako Hosoda, Miho Hanamura, Keinosuke Okamoto, Hiroshi Kobayashi, Tomoe Negishi

Journal:

Journal of Photochemistry and Photobiology B: Biology

Year:

2004

Language:

english

File:

PDF, 295 KB

english, 2004

45

Purification of a lethal toxin produced by Shigella dysenteriae

Keinosuke Okamoto, Yoshifumi Takeda, Toshio Miwatani

Journal:

Year:

1982

Language:

english

File:

PDF, 386 KB

english, 1982

46

Heat-stable enterotoxin produced by Yersinia enterocolitica

Keinosuke Okamoto, Takashi Inoue, Takeshi Moriyama, Akio Miyama

Journal:

Year:

1983

Language:

english

File:

PDF, 274 KB

english, 1983

47

Near ultraviolet radiation-mediated reaction between N-nitrosoproline and DNA: Isolation and identification of two new adducts, (R)- and (S)-8-(2-pyrrolidyl)-2′-deoxyguanosine

Aoyama, Shuhei, Sano, Kayoko, Asahi, Chiharu, Machida, Masaki, Okamoto, Keinosuke, Negishi, Tomoe, Kimura, Sachiko, Suzuki, Toshinori, Hatano, Tsutomu, Arimoto-Kobayashi, Sakae

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

2014

Language:

english

File:

PDF, 1.74 MB

english, 2014

48

Mechanism for the Autogenous Control of the crp Operon: Transcriptional Inhibition by a Divergent RNA Transcript

Keinosuke Okamoto and Martin Freundlich

Journal:

Proceedings of the National Academy of Sciences

Year:

1986

Language:

english

File:

PDF, 1.08 MB

english, 1986

49

Inhibitory Effects of (−)-Epigallocatechin Gallate on the Mutation, DNA Strand Cleavage, and DNA Adduct Formation by Heterocyclic Amines

Arimoto-Kobayashi, Sakae, Inada, Naomi, Sato, Yasuko, Sugiyama, Chitose, Okamoto, Keinosuke, Hayatsu, Hikoya, Negishi, Tomoe

Journal:

Journal of Agricultural and Food Chemistry

Year:

2003

Language:

english

File:

PDF, 77 KB

english, 2003

50

The Cytotoxin-Hemolysin Genes of Human and Eel Pathogenic Vibrio vulnificus Strains: Comparison of Nucleotide Sequences and Application to the Genetic Grouping

Senoh, Mitsutoshi, Miyoshi, Shin-ichi, Okamoto, Keinosuke, Fouz, Belen, Amaro, Carmen, Shinoda, Sumio

Journal:

Microbiology and Immunology

Year:

2005

Language:

english

File:

PDF, 220 KB

english, 2005