Keiji Oguma

7.5k total citations
216 papers, 5.7k citations indexed

About

Keiji Oguma is a scholar working on Neurology, Immunology and Surgery. According to data from OpenAlex, Keiji Oguma has authored 216 papers receiving a total of 5.7k indexed citations (citations by other indexed papers that have themselves been cited), including 90 papers in Neurology, 70 papers in Immunology and 63 papers in Surgery. Recurrent topics in Keiji Oguma's work include Botulinum Toxin and Related Neurological Disorders (90 papers), Helicobacter pylori-related gastroenterology studies (58 papers) and Toxin Mechanisms and Immunotoxins (36 papers). Keiji Oguma is often cited by papers focused on Botulinum Toxin and Related Neurological Disorders (90 papers), Helicobacter pylori-related gastroenterology studies (58 papers) and Toxin Mechanisms and Immunotoxins (36 papers). Keiji Oguma collaborates with scholars based in Japan, United States and France. Keiji Oguma's co-authors include Kenji Yokota, Yukako Fujinaga, Kaoru Inoue, Yoshikazu Hirai, Tohru Ohyama, Nobuhiro Fujii, Motowo Mizuno, Hiroyuki Okada, Susumu Take and Emiko Isogai and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and SHILAP Revista de lepidopterología.

In The Last Decade

Keiji Oguma

212 papers receiving 5.5k citations

Peers

Countries citing papers authored by Keiji Oguma

Since Specialization

Citations

This map shows the geographic impact of Keiji Oguma's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Keiji Oguma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keiji Oguma more than expected).

Fields of papers citing papers by Keiji Oguma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keiji Oguma. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Keiji Oguma. The network helps show where Keiji Oguma may publish in the future.

Co-authorship network of co-authors of Keiji Oguma

This figure shows the co-authorship network connecting the top 25 collaborators of Keiji Oguma. A scholar is included among the top collaborators of Keiji Oguma based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Keiji Oguma. Keiji Oguma is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Genomics of Clostridium botulinum group III strains 2014 ·Research in Microbiology ·Yoshihiko Sakaguchi, Tomonori Suzuki, Yumiko Yamamoto, Atsushi Nishikawa, Keiji Oguma	10
2	Purification and Characterization of Nontoxic Protein Complex from Serotype D 4947 Botulinum Toxin Complex 2012 ·The Protein Journal ·Keita Miyata, Yoshimasa Sagane, Ken‐ichi Inui, Shin-Ichiro Miyashita, Tomonori Suzuki, Keiji Oguma, Tohru Ohyama, Koichi Niwa, Toshihiro Watanabe	2
3	Behçet's Disease (Adamantiades-Behçet's Disease) 2010 ·SHILAP Revista de lepidopterología ·Fumio Kaneko, (unknown), (unknown), Hideo Sakuma, Noritaka Oyama, Koichiro Nakamura, Kenji Yokota, Keiji Oguma	42
4	The long-term risk of gastric cancer after the successful eradication of Helicobacter pylori 2010 ·Journal of Gastroenterology ·Susumu Take, Motowo Mizuno, Kuniharu Ishiki, Tomowo Yoshida, Nobuya Ohara, Kenji Yokota, Keiji Oguma, Hiroyuki Okada, Kazuhide Yamamoto	110
5	Immune Reactions Against Elongation Factor 2 Kinase: Specific Pathogenesis of Gastric Ulcer fromHelicobacter pyloriInfection 2009 ·SHILAP Revista de lepidopterología ·Kiyoshi Ayada, Kenji Yokota, Yoshiro Kawahara, Yumiko Yamamoto, Kazuyuki Hirai, Tomoki Inaba, (unknown), Hiroyuki Okada, Kazuhide Yamamoto, Keiji Oguma	1
6	The role of streptococcal hypersensitivity in the pathogenesis of Behçet's Disease. 2008 ·PubMed ·Fumio Kaneko, Noritaka Oyama, (unknown), Emiko Isogai, Kenji Yokota, Keiji Oguma	79
7	Human milk SIgA binds to botulinum type B 16S toxin and limits toxin adherence on T84 cells 2006 ·Biochemical and Biophysical Research Communications ·Takuhiro Matsumura, Yukako Fujinaga, Yingji Jin, (unknown), Keiji Oguma	11
8	Cell internalization and traffic pathway of Clostridium botulinum type C neurotoxin in HT-29 cells 2005 ·Biochimica et Biophysica Acta (BBA) - Molecular Cell Research ·Nobuo Uotsu, Atsushi Nishikawa, Toshihiro Watanabe, Tohru Ohyama, Takashi Tonozuka, Yoshiyuki Sakano, Keiji Oguma	27
9	Antimicrobial and lipopolysaccharide-binding activities of C-terminal domain of human CAP18 peptides to genus Leptospira 2004 ·Journal of Applied Research ·Emiko Isogai, (unknown), Hiroshi Isogai, Kouki Matsuo, (unknown), Hiroko Miura, Keiji Oguma	3
10	Alteration in the composition of cholesteryl glucosides and other lipids in undergoing morphological change from spiral to coccoid form 2004 ·FEMS Microbiology Letters ·(unknown), Shigehiro Hayashi, (unknown), Keiji Oguma, Y. Hirai	37
11	Helicobacter pylori eradication improves pre-existing reflux esophagitis in patients with duodenal ulcer disease 2004 ·Clinical Gastroenterology and Hepatology ·Kuniharu Ishiki, Motowo Mizuno, Susumu Take, Yasuhiro Nagahara, Tomowo Yoshida, Kazuhide Yamamoto, Hiroyuki Okada, Kenji Yokota, Keiji Oguma, Yasushi Shiratori	36
12	Neutrophil and lymphocyte responses to oralStreptococcusin Adamantiades-BehÃ§et's disease 2004 ·FEMS Immunology & Medical Microbiology ·(unknown), Kenji Yokota, Toshihiko Matsuo, Yoshihito Fujinami, Emiko Isogai, Hiroshi Isogai, Hiroshi Ohtsuki, Keiji Oguma	9
13	Role of Streptococcus sanguis and traumatic factors in Behçet's disease 2003 ·Journal of Applied Research ·Emiko Isogai, Hiroshi Isogai, Satoshi Kotake, Shigeaki Ohno, Kôichi Kimura, Keiji Oguma	11
14	A randomized open trial for comparison of proton pump inhibitors, omeprazole versus rabeprazole, in dual therapy for Helicobacter pylori infection in relation to CYP2C19 genetic polymorphism 2001 ·Journal of Gastroenterology and Hepatology ·(unknown), Motowo Mizuno, Kuniharu Ishiki, Yasuhiro Nagahara, (unknown), (unknown), Junichirou Nasu, Hiroyuki Okada, Kenji Yokota, Keiji Oguma, Takao Tsuji	54
15	Inhibition of Vero Cell Cytotoxic Activity in Escherichia coli O157:H7 Lysates by Globotriaosylceramide, Gb3, from Bovine Milk 2001 ·Bioscience Biotechnology and Biochemistry ·Shinobu Watarai, Tana Tana, Kaoru Inoue, Yasunori Kushi, Emiko Isogai, Kenji Yokota, (unknown), Keiji Oguma, Hiroshi Kodama	10
16	botR/A is a positive regulator of botulinum neurotoxin and associated non‐toxin protein genes in Clostridium botulinum A 1998 ·Molecular Microbiology ·Jean‐Christophe Marvaud, Maryse Gibert, Katsuhiro Inoue, Yukako Fujinaga, Keiji Oguma, Michel R. Popoff	65
17	Effect of ecabet sodium onHelicobacter pylori adhesion to gastric epithelial cells 1997 ·Journal of Gastroenterology ·Shunji Hayashi, Toshiro Sugiyama, Akira Yachi, Kenji Yokota, Yoshikazu Hirai, Keiji Oguma, Nobuhiro Fujii	7
18	Molecular characterization of two forms of nontoxic‐nonhemagglutinin components of Clostridium botulinum type A progenitor toxins 1995 ·FEBS Letters ·Ricardo Fujita, Yukako Fujinaga, Kaoru Inoue, Hiroshi Nakajima, Hiromi Kumon, Keiji Oguma	36
19	Molecular Construction of Clostridium botulinum Type C Progenitor Toxin and Its Gene Organization 1994 ·Biochemical and Biophysical Research Communications ·Yukako Fujinaga, Katsuhiro Inoue, S Shimazaki, K Tomochika, Kayo Tsuzuki, Nobuhiro Fujii, Toru Watanabe, Tohru Ohyama, Koichi Takeshi, Keiji Oguma	58
20	Correlation between Oligo-2',5'-adenylate synthetase and expression of human T-lymphotropic virus type-I specific gag protein 1991 ·Nobuhiro Fujii, (unknown), (unknown), S Sekiguchi, Emiko Isogai, Hiroshi Isogai, Keiji Oguma	1

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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