Ryoji Kojima

2.0k total citations
55 papers, 1.7k citations indexed

About

Ryoji Kojima is a scholar working on Molecular Biology, Pharmacology and Oncology. According to data from OpenAlex, Ryoji Kojima has authored 55 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Molecular Biology, 13 papers in Pharmacology and 13 papers in Oncology. Recurrent topics in Ryoji Kojima's work include Antibiotics Pharmacokinetics and Efficacy (13 papers), Drug Transport and Resistance Mechanisms (11 papers) and Heart Failure Treatment and Management (5 papers). Ryoji Kojima is often cited by papers focused on Antibiotics Pharmacokinetics and Efficacy (13 papers), Drug Transport and Resistance Mechanisms (11 papers) and Heart Failure Treatment and Management (5 papers). Ryoji Kojima collaborates with scholars based in Japan, United States and Taiwan. Ryoji Kojima's co-authors include Mikio Ito, Hitoshi Endou, Seok Ho, Takashi Sekine, Steven R. Gullans, Yoshio Suzuki, Hiroyuki Kusuhara, Naoko Utsunomiya‐Tate, Minoru Tsuda and Yuichi Sugiyama and has published in prestigious journals such as Journal of Biological Chemistry, Immunity and The Journal of Immunology.

In The Last Decade

Ryoji Kojima

54 papers receiving 1.6k citations

Peers

Ryoji Kojima
Birgitta C. Burckhardt Germany
Colin Brown United Kingdom
Ellappan Babu United States
Patricia A. Harper Canada
Sun-Young Ahn United States
Lena Gustavsson Sweden
Sevasti B. Koukouritaki United States
Kou‐Yi Tserng United States
Frederick A. Wilson United States
Francis R. Simon United States
Birgitta C. Burckhardt Germany
Ryoji Kojima
Citations per year, relative to Ryoji Kojima Ryoji Kojima (= 1×) peers Birgitta C. Burckhardt

Countries citing papers authored by Ryoji Kojima

Since Specialization
Citations

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

Fields of papers citing papers by Ryoji Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoji Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoji Kojima. A scholar is included among the top collaborators of Ryoji Kojima 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 Ryoji Kojima. Ryoji Kojima 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.
Nakamura, Makoto, et al.. (2025). Characterization of flexible transparent conductive films fabricated using CVD graphene on heat-resistant transparent polyimide films. Nanotechnology. 36(17). 175702–175702. 3 indexed citations
2.
Kojima, Ryoji, et al.. (2014). Butein suppresses ICAM-1 expression through the inhibition of I κ Bα and c-Jun phosphorylation in TNF-α- and PMA-treated HUVECs. International Immunopharmacology. 24(2). 267–275. 14 indexed citations
3.
Ishihara, Masashi, Ryoji Kojima, & Mikio Ito. (2008). Influence of aging on gastric ulcer healing activities of the antioxidants α-tocopherol and probucol. European Journal of Pharmacology. 601(1-3). 143–147. 11 indexed citations
4.
Taniguchi, Hajime, et al.. (2007). Involvement of MCP-1 in Tubulointerstitial Fibrosis Through Massive Proteinuria in Anti-GBM Nephritis Induced in WKY Rats. Journal of Clinical Immunology. 27(4). 409–429. 9 indexed citations
5.
Kojima, Ryoji, et al.. (2002). Immunolocalization of Multispecific Organic Anion Transporters, OAT1, OAT2, and OAT3, in Rat Kidney. Journal of the American Society of Nephrology. 13(4). 848–857. 182 indexed citations
6.
Funatsu, Hideharu, Hidetoshi Yamashita, Erika Shimizu, Ryoji Kojima, & Sadao Hori. (2001). RELATIONSHIP BETWEEN VASCULAR ENDOTHELIAL GROWTH FACTOR AND INTERLEUKIN–6 IN DIABETIC RETINOPATHY. Retina. 21(5). 469–477. 79 indexed citations
7.
Kojima, Ryoji, et al.. (2000). Effect of New Target Therapeutic Serum Digoxin Concentration Range on the Incidence of Digoxin Toxicity and the Clinical Efficacy.. Rinsho yakuri/Japanese Journal of Clinical Pharmacology and Therapeutics. 31(6). 685–691.
8.
Miura, Takanori, et al.. (1999). Effect of Educational Activity to the Medical Staffs on a Useful Application of Therapeutic Drug Monitoring.. Japanese Journal of Hospital Pharmacy. 25(3). 249–256. 1 indexed citations
9.
Kusuhara, Hiroyuki, Takashi Sekine, Naoko Utsunomiya‐Tate, et al.. (1999). Molecular Cloning and Characterization of a New Multispecific Organic Anion Transporter from Rat Brain. Journal of Biological Chemistry. 274(19). 13675–13680. 419 indexed citations
10.
Dangond, Fernando, David A. Hafler, Jeffrey K. Tong, et al.. (1998). Differential Display Cloning of a Novel Human Histone Deacetylase (HDAC3) cDNA from PHA-Activated Immune Cells. Biochemical and Biophysical Research Communications. 242(3). 648–652. 96 indexed citations
11.
Utku, Nalân, Thomas Heinemann, Stefan G. Tullius, et al.. (1998). Prevention of Acute Allograft Rejection by Antibody Targeting of TIRC7, a Novel T Cell Membrane Protein. Immunity. 9(4). 509–518. 67 indexed citations
12.
Kojima, Ryoji, Jeffrey Randall, Barry M. Brenner, & Steven R. Gullans. (1996). Osmotic Stress Protein 94 (Osp94). Journal of Biological Chemistry. 271(21). 12327–12332. 82 indexed citations
13.
Ito, Mikio, et al.. (1994). Effect of cimetidine and omeprazole on gastric ulcer healing of rats with limited food intake time. European Journal of Pharmacology. 263(3). 245–251. 20 indexed citations
14.
Taniguchi, Hajime, Tadashi Nagamatsu, Ryoji Kojima, Mikio Ito, & Yoshio Suzuki. (1994). Marked Antinephritic Action and Less Adverse Effects of Methylprednisolone Suleptanate by Intermittent Administration in Rats. The Japanese Journal of Pharmacology. 64(2). 79–88. 12 indexed citations
15.
16.
Kojima, Ryoji, Mikio Ito, & Yoshio Suzuki. (1990). Studies on the Nephrotoxicity of Aminoglycoside Antibiotics and Protection from These Effects (6): A Mechanism for the Suppressive Action of Latamoxef on Intrarenal Tobramycin Level. The Japanese Journal of Pharmacology. 53(1). 111–120. 1 indexed citations
17.
Kojima, Ryoji, Mikio Ito, & Yoshio Suzuki. (1990). Studies on the Nephrotoxicity of Aminoglycoside Antibiotics and Protection from These Effects (9): Protective Effect of Inositol Hexasulfate against Tobramycin-Induced Nephrotoxicity. The Japanese Journal of Pharmacology. 53(3). 347–358. 5 indexed citations
18.
19.
Kojima, Ryoji & Yoshio Suzuki. (1984). . Folia Pharmacologica Japonica. 84(5). 463–469. 3 indexed citations
20.
Kojima, Ryoji & Yoshio Suzuki. (1984). . Folia Pharmacologica Japonica. 84(5). 453–462. 2 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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