Shinya Koyama

1.9k total citations
43 papers, 1.5k citations indexed

About

Shinya Koyama is a scholar working on Molecular Biology, Neurology and Surgery. According to data from OpenAlex, Shinya Koyama has authored 43 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Molecular Biology, 11 papers in Neurology and 10 papers in Surgery. Recurrent topics in Shinya Koyama's work include Protein Kinase Regulation and GTPase Signaling (8 papers), Biochemical Acid Research Studies (5 papers) and Metabolism and Genetic Disorders (4 papers). Shinya Koyama is often cited by papers focused on Protein Kinase Regulation and GTPase Signaling (8 papers), Biochemical Acid Research Studies (5 papers) and Metabolism and Genetic Disorders (4 papers). Shinya Koyama collaborates with scholars based in Japan, United States and Canada. Shinya Koyama's co-authors include Akira Kikuchi, Shosei Kishida, Daniel K. Podolsky, Hideki Yamamoto, Satoshi Ikeda, Michiko Kishida, Ikuo Sakamoto, Shintaro Nakashima, Kenji Matsubara and Makoto Asashima and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Investigation and The Journal of Cell Biology.

In The Last Decade

Shinya Koyama

42 papers receiving 1.5k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Shinya Koyama Japan 18 1.1k 252 197 117 107 43 1.5k
Akimitsu Konishi Japan 16 1.0k 0.9× 152 0.6× 314 1.6× 61 0.5× 42 0.4× 23 1.5k
Sungman Park United States 11 906 0.8× 154 0.6× 365 1.9× 123 1.1× 87 0.8× 19 1.6k
Qinxi Li China 22 1.1k 0.9× 178 0.7× 287 1.5× 60 0.5× 84 0.8× 39 1.5k
Rama Kamesh Bikkavilli United States 18 1.1k 1.0× 142 0.6× 254 1.3× 55 0.5× 105 1.0× 27 1.5k
Douangsone D. Vadysirisack United States 14 755 0.7× 84 0.3× 193 1.0× 77 0.7× 86 0.8× 20 1.6k
Amnon Altman United States 11 836 0.7× 113 0.4× 274 1.4× 56 0.5× 93 0.9× 16 1.5k
Ana Guío-Carrión Spain 11 844 0.7× 118 0.5× 159 0.8× 44 0.4× 63 0.6× 16 1.3k
Karen S. Yee United States 14 1.1k 1.0× 497 2.0× 429 2.2× 66 0.6× 41 0.4× 30 1.5k
Ken‐ichi Kozaki Japan 21 906 0.8× 106 0.4× 312 1.6× 82 0.7× 118 1.1× 34 1.5k
Brian P. Ashburner United States 11 876 0.8× 88 0.3× 290 1.5× 55 0.5× 55 0.5× 12 1.3k

Countries citing papers authored by Shinya Koyama

Since Specialization
Citations

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

Fields of papers citing papers by Shinya Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Shinya Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Shinya Koyama. A scholar is included among the top collaborators of Shinya Koyama 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 Shinya Koyama. Shinya Koyama 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.
Narisawa, Ayumi, Shinya Koyama, Hiroyuki Kon, et al.. (2013). Vertebral artery dissecting aneurysm associated with abducens nerve palsy: a report of 7 cases and review of literature. Nosotchu. 35(1). 12–19. 2 indexed citations
2.
Koyama, Shinya, et al.. (2000). Regulation of Complex Formation of POB1/Epsin/Adaptor Protein Complex 2 by Mitotic Phosphorylation. Journal of Biological Chemistry. 275(24). 18399–18406. 49 indexed citations
3.
Shirouzu, Mikako, Shinya Koyama, Chang‐Deng Hu, et al.. (1998). Interactions of the Amino Acid Residue at Position 31 of the c-Ha-Ras Protein with Raf-1 and RalGDS. Journal of Biological Chemistry. 273(13). 7737–7742. 18 indexed citations
4.
Kishida, Shosei, Hideki Yamamoto, Satoshi Ikeda, et al.. (1998). Axin, a Negative Regulator of the Wnt Signaling Pathway, Directly Interacts with Adenomatous Polyposis Coli and Regulates the Stabilization of β-Catenin. Journal of Biological Chemistry. 273(18). 10823–10826. 418 indexed citations
5.
Maeda, Takashi, Keizo Sugino, Shinya Koyama, et al.. (1997). Effect of antileukocyte adhesion molecule antibodies, nitric oxide synthase inhibitor, and corticosteroids on endotoxin shock in mice. Surgery Today. 27(1). 22–29. 8 indexed citations
6.
Kishida, Shosei, Shinya Koyama, Kenji Matsubara, et al.. (1997). Colocalization of Ras and Ral on the membrane is required for Ras-dependent Ral activation through Ral GDP dissociation stimulator. Oncogene. 15(24). 2899–2907. 59 indexed citations
7.
Hinoi, Takao, Shosei Kishida, Shinya Koyama, et al.. (1996). Post-translational Modifications of Ras and Ral Are Important for the Action of Ral GDP Dissociation Stimulator. Journal of Biological Chemistry. 271(33). 19710–19716. 35 indexed citations
8.
Matsura, Tatsuya, et al.. (1995). Acetaminophen-induced hepatic injury in mice: The role of lipid peroxidation and effects of pretreatment with coenzyme Q10 and α-tocopherol. Free Radical Biology and Medicine. 19(2). 169–176. 81 indexed citations
9.
Koyama, Shinya, Lewis T. Williams, & Akira Kikuchi. (1995). Characterization of the interaction of Raf‐1 with ras p21 or 14‐3‐3 protein in intact cells. FEBS Letters. 368(2). 321–325. 6 indexed citations
10.
Ikeda, Masahiro, et al.. (1995). rap1 p21 regulates the interaction of ras p21 with RGL, a new effector protein of ras p21. FEBS Letters. 375(1-2). 37–40. 24 indexed citations
11.
Shioda, Toshi, et al.. (1994). Iron Ion Induces Mitochondrial DNA Damage in HTC Rat Hepatoma Cell Culture-Role of Antioxidants in Mitochondrial DNA Protection from Oxidative Stresses. Archives of Biochemistry and Biophysics. 313(1). 120–125. 17 indexed citations
12.
Koyama, Shinya, et al.. (1992). Identification, purification and reconstitutions of thiamin metabolizing enzymes in human red blood cells. Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology. 1160(2). 171–178. 18 indexed citations
13.
Koyama, Shinya, et al.. (1991). Changes in amino acid and glucose transport in brush-border membrane vesicles of hyperglycemic guinea-pig small intestine. Biochimica et Biophysica Acta (BBA) - Biomembranes. 1063(1). 155–161. 5 indexed citations
14.
Koyama, Shinya, et al.. (1990). A new technique for one-stage radical eradication of long-standing chronic thoracic empyema. Journal of Thoracic and Cardiovascular Surgery. 99(3). 410–415. 2 indexed citations
15.
Koyama, Shinya & Daniel K. Podolsky. (1989). Differential expression of transforming growth factors alpha and beta in rat intestinal epithelial cells.. Journal of Clinical Investigation. 83(5). 1768–1773. 197 indexed citations
16.
Shikata, Hiroo, et al.. (1989). Cytosolic adenylate kinase catalyzes the synthesis of thiamin triphosphate from thiamin diphosphate.. PubMed. 18(5). 933–41. 22 indexed citations
17.
Koyama, Shinya, David H. Hollander, & Violetta D. Dadufalza. (1988). The Mechanisms of Intestinal Absorption of the Carcinogen MNNG (N-Methyl-N'-nitro-N-nitrosoguanidine). Experimental Biology and Medicine. 188(2). 206–211. 3 indexed citations
18.
Yamamoto, Kanako, et al.. (1987). [Large tumors of the chest wall and its reconstruction with Marlex mesh--report of 5 cases].. PubMed. 35(7). 967–76.
19.
Koyama, Shinya, et al.. (1986). Content of thiamin phosphate esters in mammalian tissues--an extremely high concentration of thiamin triphosphate in pig skeletal muscle.. PubMed. 12(3). 385–90. 25 indexed citations
20.
Yamamoto, Ken, et al.. (1984). [Pleural effusion due to rupture of benign cystic teratoma into left pleural cavity: a review of the Japanese literature].. PubMed. 32(11). 2013–20. 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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