Kei‐Ichi Hirai

1.7k total citations
71 papers, 1.4k citations indexed

About

Kei‐Ichi Hirai is a scholar working on Molecular Biology, Surgery and Oncology. According to data from OpenAlex, Kei‐Ichi Hirai has authored 71 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 36 papers in Molecular Biology, 11 papers in Surgery and 8 papers in Oncology. Recurrent topics in Kei‐Ichi Hirai's work include Paraquat toxicity studies and treatments (8 papers), ATP Synthase and ATPases Research (7 papers) and Bioactive Compounds and Antitumor Agents (7 papers). Kei‐Ichi Hirai is often cited by papers focused on Paraquat toxicity studies and treatments (8 papers), ATP Synthase and ATPases Research (7 papers) and Bioactive Compounds and Antitumor Agents (7 papers). Kei‐Ichi Hirai collaborates with scholars based in Japan, Canada and United States. Kei‐Ichi Hirai's co-authors include Hiroki Shimada, Eriko Simamura, Michel G. Côté, Hanspeter Witschi, Junko Koyama, Guoying Wang, Kazuo Ogawa, Jiehong Pan, Toshihisa Hatta and Sam Kacew and has published in prestigious journals such as Journal of Biological Chemistry, Brain Research and Antimicrobial Agents and Chemotherapy.

In The Last Decade

Kei‐Ichi Hirai

71 papers receiving 1.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Kei‐Ichi Hirai Japan 22 669 267 228 148 119 71 1.4k
Etienne Dewailly France 26 885 1.3× 83 0.3× 271 1.2× 58 0.4× 47 0.4× 34 1.8k
Yoshitaka Maki Japan 19 542 0.8× 236 0.9× 199 0.9× 141 1.0× 35 0.3× 58 1.5k
Jeong Ho Seok South Korea 26 980 1.5× 117 0.4× 100 0.4× 132 0.9× 31 0.3× 64 1.7k
Rita Santamaria Italy 29 814 1.2× 127 0.5× 195 0.9× 143 1.0× 37 0.3× 75 2.4k
Xiaoming Yang China 25 898 1.3× 187 0.7× 139 0.6× 169 1.1× 17 0.1× 72 1.7k
Ewa Witort Italy 20 1.1k 1.6× 131 0.5× 36 0.2× 117 0.8× 65 0.5× 33 1.7k
Wen Zhao China 28 1.0k 1.6× 181 0.7× 160 0.7× 166 1.1× 35 0.3× 103 2.1k
Antonina Azzolina Italy 28 916 1.4× 108 0.4× 100 0.4× 59 0.4× 27 0.2× 53 2.0k
Nu‐Man Tsai Taiwan 22 671 1.0× 77 0.3× 77 0.3× 125 0.8× 38 0.3× 76 1.5k
Darren R. Williams South Korea 27 1.4k 2.1× 231 0.9× 76 0.3× 74 0.5× 53 0.4× 80 2.4k

Countries citing papers authored by Kei‐Ichi Hirai

Since Specialization
Citations

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

Fields of papers citing papers by Kei‐Ichi Hirai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kei‐Ichi Hirai

This figure shows the co-authorship network connecting the top 25 collaborators of Kei‐Ichi Hirai. A scholar is included among the top collaborators of Kei‐Ichi Hirai 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‐Ichi Hirai. Kei‐Ichi Hirai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Simamura, Eriko, Hiroki Shimada, Yasuhito Ishigaki, et al.. (2008). Bioreductive activation of quinone antitumor drugs by mitochondrial voltage-dependent anion channel 1. Anatomical Science International. 83(4). 261–266. 28 indexed citations
2.
Simamura, Eriko, Hiroki Shimada, Toshihisa Hatta, & Kei‐Ichi Hirai. (2008). Mitochondrial voltage-dependent anion channels (VDACs) as novel pharmacological targets for anti-cancer agents. Journal of Bioenergetics and Biomembranes. 40(3). 213–217. 66 indexed citations
3.
Ueda, Jun‐ya, Suresh Awale, Yasuhiro Tezuka, et al.. (2006). Growth Inhibitory Activity of Wood ofTaxus yunnanensisand its Liquid Chromatography Fourier-Transform Mass Spectrometry Analysis. Planta Medica. 72(13). 1241–1244. 4 indexed citations
4.
Desmond, Julian C., Hiroshi Kawabata, Carsten Müller‐Tidow, et al.. (2005). The synthetic furanonaphthoquinone induces growth arrest, apoptosis and differentiation in a variety of leukaemias and multiple myeloma cells. British Journal of Haematology. 131(4). 520–529. 15 indexed citations
5.
6.
Hirai, Kei‐Ichi, et al.. (2002). Alpha-Tocopherol Protects Cultured Human Cells from the Acute Lethal Cytotoxicity of Dioxin. International Journal for Vitamin and Nutrition Research. 72(3). 147–153. 12 indexed citations
7.
Takiguchi, Katsuki, et al.. (2001). EXPERIMENTAL STUDY ON TWO-DIMENSIONAL RESTORING FORCE CHARACTERISTICS OF R/C COLUMNS UNDER VARYING AXIAL FORCE. Journal of Structural and Construction Engineering (Transactions of AIJ). 66(539). 111–118. 3 indexed citations
8.
Hirai, Kei‐Ichi. (1999). Furanonaphthoquinone Analogs Possessing Preferential Antitumor Activity Compared to Normal Cells. Cancer Detection and Prevention. 23(6). 539–539. 22 indexed citations
9.
Takegami, Tsutomu, Eriko Simamura, Kei‐Ichi Hirai, & Junko Koyama. (1998). Inhibitory effect of furanonaphthoquinone derivatives on the replication of Japanese encephalitis virus. Antiviral Research. 37(1). 37–45. 31 indexed citations
10.
Ouchi, Tatsuro, et al.. (1994). Design of drug-terminated poly(ethylene glycol) conjugate exhibiting antitumor activity. 31. 1091–1099. 1 indexed citations
11.
Hirai, Kei‐Ichi, et al.. (1992). Platinum-Diaminobenzidine Reaction and Its Contribution to the Quantitation of Cytochrome Oxidase Activity. Journal of Electron Microscopy. 41(2). 127–9. 9 indexed citations
12.
Hirai, Kei‐Ichi, et al.. (1988). Induction of peroxidase activity in rat trachea infected with Mycoplasma. ACTA HISTOCHEMICA ET CYTOCHEMICA. 21(6). 614. 2 indexed citations
13.
Hirai, Kei‐Ichi, et al.. (1985). A microspectrophotometric quantification of cytochrome oxidase activity by means of color-modified diaminobenzidine reaction.. ACTA HISTOCHEMICA ET CYTOCHEMICA. 18(3). 283–292. 15 indexed citations
14.
Hirai, Kei‐Ichi, Michiyuki Maeda, & Yasuo Ichikawa. (1983). Development of Annulate Lamellae in Mouse Myeloblastic Cell Line When Differentiated to Macrophages. Journal of Electron Microscopy. 32(1). 13–9. 4 indexed citations
15.
Hirai, Kei‐Ichi, et al.. (1983). Disintegration of lung peroxisomes during differentiation of type II cells to type I cells in butylated hydroxytoluene-administered mice. Experimental and Molecular Pathology. 39(2). 129–138. 25 indexed citations
16.
Ueno, Satoki, I Tsukahara, Kei‐Ichi Hirai, & Kazuo Ogawa. (1979). Cytochemical Studies on NAD(P)H Oxidase Activity in Cultured Retinal Pigment Epithelial Cells. ACTA HISTOCHEMICA ET CYTOCHEMICA. 12(6). 623. 3 indexed citations
17.
Hirai, Kei‐Ichi, Hanspeter Witschi, & Michel G. Côté. (1977). Electron microscopy of butylated hydroxytoluene-induced lung damage in mice. Experimental and Molecular Pathology. 27(3). 295–308. 70 indexed citations
18.
Hirai, Kei‐Ichi & Kimio Yasuhira. (1972). Mitochondrial oxidation of 3,3'-diaminobenzidine and related compounds, and their possible relation to carcinogenesis.. PubMed. 63(6). 665–73. 5 indexed citations
19.
Takamatsu, Hideo & Kei‐Ichi Hirai. (1968). NADI REACTION OF MYELOID LEUCOCYTES AND VITAMIN K. ACTA HISTOCHEMICA ET CYTOCHEMICA. 1(1). 1–10. 4 indexed citations
20.
Hirai, Kei‐Ichi. (1968). SPECIFIC AFFINITY OF OXIDIZED AMINE DYE (RADICAL INTERMEDIATER) FOR HEME ENZYMES: STUDY IN MICROSCOPY AND SPECTROPHOTOMETRY. ACTA HISTOCHEMICA ET CYTOCHEMICA. 1(1). 43–55. 49 indexed citations

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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