World's Best Scientists 2026 revealed!

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Microbiology

D-Index
64
Citations
9946
World Ranking
2666
National Ranking
99

Overview

Keiji Oguma is affiliated with Okayama University in Japan and has contributed to research primarily within the field of Medicine. Their work spans various subfields, including Infectious Diseases, Neurology, Public Health, Environmental and Occupational Health, Endocrinology, and Cardiology and Cardiovascular Medicine.

The scientist's research topics cover several specific areas such as Botulinum Toxin and Related Neurological Disorders, Streptococcal Infections and Treatments, Diphtheria, Corynebacterium, and Tetanus, SARS-CoV-2 and COVID-19 Research, COVID-19 Clinical Research Studies, and Viral Infections and Immunology Research.

Keiji Oguma has published in a range of venues, with recurring appearances in:

  • Anaerobe
  • Journal of Infection and Chemotherapy

Among their recent publications are the following papers:

  • Analysis of a plasmid encoding botulinum neurotoxin type G gene in Clostridium argentinense, 2020, Anaerobe
  • Antibody responses induced by the BNT162b2 mRNA COVID-19 vaccine in healthcare workers in a single community hospital in Japan, 2021, Journal of Infection and Chemotherapy

Frequent co-authors collaborating with Keiji Oguma include:

  • Yoshihiko Sakaguchi
  • Jumpei Uchiyama
  • A Take
  • Kazuyoshi Gotoh
  • Masakiyo Sakaguchi

Best Publications

  • The effect of eradicating helicobacter pylori on the development of gastric cancer in patients with peptic ulcer disease.

    Susumu Take;Motowo Mizuno;Kuniharu Ishiki;Yasuhiro Nagahara

  • Unique cholesteryl glucosides in Helicobacter pylori: composition and structural analysis.

    Y. Hirai;Mahmudul Haque;T. Yoshida;K. Yokota

  • Molecular composition of Clostridium botulinum type A progenitor toxins

    K Inoue;Y Fujinaga;T Watanabe;T Ohyama

  • The haemagglutinin of Clostridium botulinum type C progenitor toxin plays an essential role in binding of toxin to the epithelial cells of guinea pig small intestine, leading to the efficient absorption of the toxin

    Yukako Fujinaga;Kaoru Inoue;Sadahiro Watanabe;Kenji Yokota

  • Structure and Function of Clostridium botulinum Toxins

    Keiji Oguma;Yukako Fujinaga;Kaoru Inoue

  • The genome sequence of Clostridium botulinum type C neurotoxin-converting phage and the molecular mechanisms of unstable lysogeny

    Yoshihiko Sakaguchi;Tetsuya Hayashi;Ken Kurokawa;Keisuke Nakayama

  • Baseline gastric mucosal atrophy is a risk factor associated with the development of gastric cancer after Helicobacter pylori eradication therapy in patients with peptic ulcer diseases.

    Susumu Take;Motowo Mizuno;Kuniharu Ishiki;Yasuhiro Nagahara

  • Identification and characterization of functional subunits of Clostridium botulinum type A progenitor toxin involved in binding to intestinal microvilli and erythrocytes.

    Yukako Fujinaga;Kaoru Inoue;Takako Nomura;Junzo Sasaki

  • Lipid profile of Helicobacter spp.: presence of cholesteryl glucoside as a characteristic feature.

    Mahmudul Haque;Yoshikazu Hirai;Kenji Yokota;Noriko Mori

  • Helicobacter pylori heat-shock protein 60 induces interleukin-8 via a Toll-like receptor (TLR)2 and mitogen-activated protein (MAP) kinase pathway in human monocytes.

    Ying Zhao;Kenji Yokota;Kiyoshi Ayada;Yumiko Yamamoto

  • Chronic Infections and Atherosclerosis

    Kiyoshi Ayada;Kenji Yokota;Kazuko Kobayashi;Yehuda Shoenfeld;Yehuda Shoenfeld

  • The role of streptococcal hypersensitivity in the pathogenesis of Behçet's Disease.

    Fumio Kaneko;Noritaka Oyama;Hirokatsu Yanagihori;Emiko Isogai

  • The HA proteins of botulinum toxin disrupt intestinal epithelial intercellular junctions to increase toxin absorption.

    Takuhiro Matsumura;Yingji Jin;Yingji Jin;Yuko Kabumoto;Yuki Takegahara

  • Helicobacter pylori heat-shock protein 60 induces inflammatory responses through the Toll-like receptor-triggered pathway in cultured human gastric epithelial cells.

    Ryuta Takenaka;Kenji Yokota;Kiyoshi Ayada;Motowo Mizuno

  • Production of anti-neurotoxin antibody is enhanced by two subcomponents, HA1 and HA3b, of Clostridium botulinum type B 16S toxin–haemagglutinin

    Jae Chul Lee;Kenji Yokota;Hideyuki Arimitsu;Hyun Jung Hwang

  • Simple Method for Detection of Clostridium botulinum Type A to F Neurotoxin Genes by Ploymerase Chain Reaction

    Kouichi Takeshi;Yukako Fujinaga;Kaoru Inoue;Hiroshi Nakajima

  • Structure and Function of Clostridium Botulinum Progenitor Toxin

    K. Oguma;K. Inoue;Y. Fujinaga;K. Yokota

  • Molecular characterization of binding subcomponents of Clostridium botulinum type C progenitor toxin for intestinal epithelial cells and erythrocytes.

    Yukako Fujinaga;Kaoru Inoue;Shinobu Watarai;Yoshihiko Sakaguchi

  • Chemiluminescence of neutrophils from patients with Behçet's disease and its correlation with an increased proportion of uncommon serotypes of Streptococcus sanguis in the oral flora

    E. Isogai;S. Ohno;S. Kotake;H. Isogai

  • Infant botulism due to Clostridium botulinum type C toxin.

    Keiji Oguma;Kenji Yokota;Shunji Hayashi;Koichi Takeshi

Frequent Co-Authors

Nobuhiro Fujii
Nobuhiro Fujii Sapporo Medical University
Shigeaki Ohno
Shigeaki Ohno Hokkaido University
Yasushi Shiratori
Yasushi Shiratori Okayama University
Tadashi Yoshino
Tadashi Yoshino Okayama University
Eiji Matsuura
Eiji Matsuura Okayama University
Masahiro Asaka
Masahiro Asaka Hokkaido University
Igor Spigelman
Igor Spigelman University of California, Los Angeles
Koki Taniguchi
Koki Taniguchi Fujita Health University
Norihisa Ishii
Norihisa Ishii National Institutes of Biomedical Innovation, Health and Nutrition
Masayuki Saito
Masayuki Saito Hokkaido University

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