Kei Ohnuma

4.2k total citations
104 papers, 3.4k citations indexed

About

Kei Ohnuma is a scholar working on Oncology, Molecular Biology and Cancer Research. According to data from OpenAlex, Kei Ohnuma has authored 104 papers receiving a total of 3.4k indexed citations (citations by other indexed papers that have themselves been cited), including 71 papers in Oncology, 35 papers in Molecular Biology and 22 papers in Cancer Research. Recurrent topics in Kei Ohnuma's work include Peptidase Inhibition and Analysis (61 papers), Neuropeptides and Animal Physiology (19 papers) and Protease and Inhibitor Mechanisms (17 papers). Kei Ohnuma is often cited by papers focused on Peptidase Inhibition and Analysis (61 papers), Neuropeptides and Animal Physiology (19 papers) and Protease and Inhibitor Mechanisms (17 papers). Kei Ohnuma collaborates with scholars based in Japan, United States and France. Kei Ohnuma's co-authors include Chikao Morimoto, Nam H. Dang, Satoshi Iwata, Ryo Hatano, Hirotoshi Tanaka, Osamu Hosono, Tadanori Yamochi, Masahiko Uchiyama, Taketo Yamada and Seiji Kobayashi and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Journal of Clinical Oncology.

In The Last Decade

Kei Ohnuma

100 papers receiving 3.4k citations

Peers

Countries citing papers authored by Kei Ohnuma

Since Specialization

Citations

This map shows the geographic impact of Kei Ohnuma'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 Kei Ohnuma with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kei Ohnuma more than expected).

Fields of papers citing papers by Kei Ohnuma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kei Ohnuma. 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 Kei Ohnuma. The network helps show where Kei Ohnuma may publish in the future.

Co-authorship network of co-authors of Kei Ohnuma

This figure shows the co-authorship network connecting the top 25 collaborators of Kei Ohnuma. A scholar is included among the top collaborators of Kei Ohnuma 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 Kei Ohnuma. Kei Ohnuma 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	Hematopoietic dipeptidyl peptidase-4 deficiency promotes M2 macrophage polarization and attenuates atherosclerosis 2025 ·Biochemical and Biophysical Research Communications ·(unknown), Takeshi Matsumura, (unknown), (unknown), (unknown), (unknown), (unknown), Takafumi Senokuchi, Hiroyuki Motoshima, Tatsuya Kondo, Ryo Hatano, Kei Ohnuma, Chikao Morimoto, Eiichi Araki, Naoto Kubota	0
2	An abnormal increase in CD26(−)CD28(−) cytotoxic effector CD4 and CD8 T cell populations in patients with systemic lupus erythematosus 2024 ·International Immunology ·Ryo Hatano, Hayato Nakamura, Ayako Yamamoto, Haruna Otsuka, Takumi Itoh, (unknown), (unknown), (unknown), Yuta Hasegawa, Tsutomu Sato, Nam H. Dang, Kei Ohnuma, Shinji Morimoto, Iwao Sekigawa, Tomonori Ishii, Chikao Morimoto	0
3	Functional roles of CD26/DPP4 in lipopolysaccharide-induced lung injury 2024 ·American Journal of Physiology-Lung Cellular and Molecular Physiology ·Shunichi Sato, Takeshi Kawasaki, Ryo Hatano, (unknown), Yukiko Takahashi, Kei Ohnuma, Chikao Morimoto, Steven M. Dudek, Koichiro Tatsumi, Takuji Suzuki	3
4	Functional Roles of CD26/DPP4 in Bleomycin-Induced Pulmonary Hypertension Associated with Interstitial Lung Disease 2024 ·International Journal of Molecular Sciences ·(unknown), Takeshi Kawasaki, Shunichi Sato, (unknown), Koichiro Tatsumi, Ryo Hatano, Kei Ohnuma, Chikao Morimoto, Yoshitoshi Kasuya, Yoshinori Hasegawa, Osamu Ohara, Takuji Suzuki	6
5	Functional roles of CD26/DPP4 in bleomycin‐induced pulmonary fibrosis 2023 ·Physiological Reports ·(unknown), Takeshi Kawasaki, Yoshitoshi Kasuya, Ryo Hatano, Shunichi Sato, Yukiko Takahashi, Kei Ohnuma, Chikao Morimoto, Steven M. Dudek, Koichiro Tatsumi, Takuji Suzuki	6
6	Remission of remitting seronegative symmetrical synovitis with pitting edema after unrelated cord blood transplantation for myelodysplastic syndrome 2015 ·Annals of Hematology ·(unknown), Takaaki Konuma, Kei Ohnuma, Osamu Hosono, Hirotoshi Tanaka, Seiko Kato, Arinobu Tojo, Satoshi Takahashi	4
7	Regulation of somatostatin receptor 4-mediated cytostatic effects by CD26 in malignant pleural mesothelioma 2014 ·British Journal of Cancer ·Junpei Yamamoto, Kei Ohnuma, Ryo Hatano, Toshihiro Okamoto, Eriko Komiya, Hiroaki Yamazaki, Satoshi Iwata, Nam H. Dang, (unknown), Takumi Kishimoto, Taketo Yamada, Chikao Morimoto	15
8	Polyarthropathy in type 2 diabetes patients treated with DPP4 inhibitors 2013 ·Diabetes Research and Clinical Practice ·(unknown), Kei Ohnuma, Hiroshi Suzuki, Nam H. Dang, Ryo Hatano, (unknown), Chikao Morimoto	26
9	CD26 Overexpression Is Associated with Prolonged Survival and Enhanced Chemosensitivity in Malignant Pleural Mesothelioma 2012 ·Clinical Cancer Research ·Keisuke Aoe, Vishwa Jeet Amatya, Nobukazu Fujimoto, Kei Ohnuma, Osamu Hosono, Akio Hiraki, Masanori Fujii, Taketo Yamada, Nam H. Dang, Yukio Takeshima, Kouki Inai, Takumi Kishimoto, Chikao Morimoto	49
10	Inhibition of dipeptidyl peptidase 4 regulates microvascular endothelial growth induced by inflammatory cytokines 2010 ·Biochemical and Biophysical Research Communications ·(unknown), Kei Ohnuma, Ryo Hatano, (unknown), Nam H. Dang, Chikao Morimoto	49
11	CD26 expression on T cell lines increases SDF-1-α-mediated invasion 2009 ·British Journal of Cancer ·Pamela A. Havre, Masako Abe, Yasuyo Urasaki, Kei Ohnuma, Chikao Morimoto, Nam H. Dang	17
12	An adult case of Henoch-Schönlein purpura complicating common peroneal nerve mononeuropathy 2008 ·Modern Rheumatology ·Kei Ohnuma, Osamu Hosono, Hiroshi Kawasaki, Noritada Yoshikawa, (unknown), Naoki Oyaizu, Hirotoshi Tanaka, Chikao Morimoto	4
13	SSA/Ro52 autoantigen interacts with Dcp2 to enhance its decapping activity 2008 ·Biochemical and Biophysical Research Communications ·Tadanori Yamochi, Kei Ohnuma, Osamu Hosono, Hirotoshi Tanaka, Yoshiyuki Kanai, Chikao Morimoto	5
14	Role of CD26/dipeptidyl peptidase IV in human T cell activation and function 2007 ·Frontiers in bioscience ·Kei Ohnuma	100
15	TCR Engagement Increases Hypoxia-Inducible Factor-1α Protein Synthesis via Rapamycin-Sensitive Pathway under Hypoxic Conditions in Human Peripheral T Cells 2005 ·The Journal of Immunology ·Hiroshi Nakamura, Yuichi Makino, Kensaku Okamoto, Lorenz Poellinger, Kei Ohnuma, Chikao Morimoto, Hirotoshi Tanaka	132
16	Hypoxia-Inducible Factor Regulates Survival of Antigen Receptor-Driven T Cells 2003 ·The Journal of Immunology ·Yuichi Makino, Hiroshi Nakamura, Eiji Ikeda, Kei Ohnuma, Kenji Yamauchi, Yutaka Yabe, Lorenz Poellinger, Yasunori Okada, Chikao Morimoto, Hirotoshi Tanaka	117
17	SS-A/Ro52, an Autoantigen Involved in CD28-Mediated IL-2 Production 2003 ·The Journal of Immunology ·Tomonori Ishii, Kei Ohnuma, Akikazu Murakami, Naruhiko Takasawa, Tadanori Yamochi, Satoshi Iwata, Masahiko Uchiyama, Nam H. Dang, Hirotoshi Tanaka, Chikao Morimoto	44
18	Soluble CD26/Dipeptidyl Peptidase IV Induces T Cell Proliferation Through CD86 Up-Regulation on APCs 2001 ·The Journal of Immunology ·Kei Ohnuma, Yasuhiko Munakata, Tomonori Ishii, Satoshi Iwata, Seiji Kobayashi, Osamu Hosono, Hiroshi Kawasaki, Nam H. Dang, Chikao Morimoto	51
19	Cord blood transplantation from HLA‐mismatched unrelated donors as a treatment for children with haematological malignancies 2001 ·British Journal of Haematology ·Kei Ohnuma, Keiichi Isoyama, (unknown), Yasunori Toyoda, Junko Nakamura, Fumiaki Nakajima, Masahiro Tsuchida, (unknown), Aiko Suminoe, Toshiro Hara, Hirokazu Nishihira	23
20	The Influence of HLA Genotyping Compatibility on Clinical Outcome after Cord Blood Transplantation from Unrelated Donors 2000 ·Journal of Hematotherapy & Stem Cell Research ·Kei Ohnuma, Keiichi Isoyama, Koichiro Ikuta, Yasunori Toyoda, Junko Nakamura, Fumiaki Nakajima, Hirokazu Nishihira	9

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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