Eriko Koyama

973 total citations
18 papers, 798 citations indexed

About

Eriko Koyama is a scholar working on Molecular Biology, Pharmacology and Spectroscopy. According to data from OpenAlex, Eriko Koyama has authored 18 papers receiving a total of 798 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Molecular Biology, 6 papers in Pharmacology and 6 papers in Spectroscopy. Recurrent topics in Eriko Koyama's work include Analytical Chemistry and Chromatography (6 papers), Pharmacogenetics and Drug Metabolism (6 papers) and Advancements in Transdermal Drug Delivery (4 papers). Eriko Koyama is often cited by papers focused on Analytical Chemistry and Chromatography (6 papers), Pharmacogenetics and Drug Metabolism (6 papers) and Advancements in Transdermal Drug Delivery (4 papers). Eriko Koyama collaborates with scholars based in Japan, United Kingdom and Spain. Eriko Koyama's co-authors include Takashi Ishizaki, Kan Chiba, Yuji Ohori, Ken Kitazawa, Osamu Izawa, Kazuhiro Chiba, Motoyasu Ui, M Tani, Kiyoshi Kubota and Masanao Tani and has published in prestigious journals such as Journal of Pharmacology and Experimental Therapeutics, Clinical Chemistry and Journal of Pharmaceutical Sciences.

In The Last Decade

Eriko Koyama

18 papers receiving 759 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Eriko Koyama Japan 15 305 228 171 167 107 18 798
Jim Fang Canada 18 261 0.9× 100 0.4× 368 2.2× 101 0.6× 151 1.4× 29 1.4k
J.F. Ménez France 19 416 1.4× 77 0.3× 270 1.6× 128 0.8× 75 0.7× 42 1.2k
Ayako Ohnishi Japan 8 223 0.7× 59 0.3× 90 0.5× 250 1.5× 101 0.9× 9 484
Rajinder Bhardwaj United States 8 349 1.1× 46 0.2× 156 0.9× 151 0.9× 110 1.0× 37 749
Ronald E. Tynes United States 17 507 1.7× 66 0.3× 285 1.7× 503 3.0× 78 0.7× 21 1.1k
Kaustubh H. Kulkarni United States 12 204 0.7× 65 0.3× 346 2.0× 137 0.8× 134 1.3× 18 945
Noriko Ohashi Japan 14 313 1.0× 89 0.4× 243 1.4× 182 1.1× 116 1.1× 27 1.1k
Yun K. Tam Canada 14 139 0.5× 47 0.2× 161 0.9× 77 0.5× 96 0.9× 40 682
Yadollah Azarmi Iran 17 111 0.4× 65 0.3× 258 1.5× 183 1.1× 118 1.1× 43 942
Ayman Al‐Shurbaji Sweden 14 344 1.1× 149 0.7× 289 1.7× 119 0.7× 135 1.3× 32 1.0k

Countries citing papers authored by Eriko Koyama

Since Specialization
Citations

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

Fields of papers citing papers by Eriko Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Eriko Koyama

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

All Works

18 of 18 papers shown
1.
Koyama, Eriko, et al.. (2003). Absorption and metabolism of glycosidic sweeteners of stevia mixture and their aglycone, steviol, in rats and humans. Food and Chemical Toxicology. 41(6). 875–883. 103 indexed citations
2.
Koyama, Eriko, et al.. (2002). In vitro metabolism of the glycosidic sweeteners, stevia mixture and enzymatically modified stevia in human intestinal microflora. Food and Chemical Toxicology. 41(3). 359–374. 157 indexed citations
3.
Zhao, Xuejun, Eriko Koyama, & Takashi Ishizaki. (1999). An In Vitro Study on the Metabolism and Possible Drug Interactions of Rokitamycin, a Macrolide Antibiotic, Using Human Liver Microsomes. Drug Metabolism and Disposition. 27(7). 776–785. 11 indexed citations
4.
Yamashita, Kouwa, Xuejun Zhao, Eriko Koyama, et al.. (1998). A Study on the Metabolism of Etoposide and Possible Interactions with Antitumor or Supporting Agents by Human Liver Microsomes. Journal of Pharmacology and Experimental Therapeutics. 286(3). 1294–1300. 75 indexed citations
5.
Morinobu, Shigeru, Takeshi Tanaka, Shinobu Kawakatsu, et al.. (1997). Effects of genetic defects in the CYP2C19 gene on the N‐demethylation of imipramine, and clinical outcome of imipramine therapy. Psychiatry and Clinical Neurosciences. 51(4). 253–257. 35 indexed citations
6.
Koyama, Eriko, Kan Chiba, Masanao Tani, & Takashi Ishizaki. (1997). Reappraisal of Human CYP Isoforms Involved in Imipramine N-Demethylation and 2-Hydroxylation: A Study Using Microsomes Obtained from Putative Extensive and Poor Metabolizers of S-Mephenytoin and Eleven Recombinant Human CYPs. Journal of Pharmacology and Experimental Therapeutics. 281(3). 1199–1210. 70 indexed citations
7.
Koyama, Eriko, Takeshi Tanaka, Kan Chiba, et al.. (1996). Steady-State Plasma Concentrations of Imipramine and Desipramine in Relation to S-Mephenytoin 4'-Hydroxylation Status in Japanese Depressive Patients. Journal of Clinical Psychopharmacology. 16(4). 286–293. 37 indexed citations
8.
Koyama, Eriko, Kazuhiro Chiba, M Tani, & Takashi Ishizaki. (1996). Identification of human cytochrome P450 isoforms involved in the stereoselective metabolism of mianserin enantiomers.. Journal of Pharmacology and Experimental Therapeutics. 278(1). 21–30. 56 indexed citations
9.
Ishizaki, Takashi, Kan Chiba, Eriko Koyama, et al.. (1995). Comparison of the interaction potential of a new proton pump inhibitor, E3810, versus omeprazole with diazepam in extensive and poor metabolizers of S-mephenytoin 4′-hydroxylation*. Clinical Pharmacology & Therapeutics. 58(2). 155–164. 67 indexed citations
10.
Koyama, Eriko, Dong‐Ryul Sohn, S. G. Shin, et al.. (1994). Metabolic disposition of imipramine in oriental subjects: relation to metoprolol alpha-hydroxylation and S-mephenytoin 4'-hydroxylation phenotypes.. Journal of Pharmacology and Experimental Therapeutics. 271(2). 860–867. 35 indexed citations
11.
Chiba, Kazuhiro, et al.. (1994). The role of S‐mephenytoin 4'‐hydroxylase in imipramine metabolism by human liver microsomes: a two‐enzyme kinetic analysis of N‐ demethylation and 2‐hydroxylation.. British Journal of Clinical Pharmacology. 37(3). 237–242. 44 indexed citations
12.
Kubota, Kiyoshi, et al.. (1993). Dual Sorption Model for the Nonlinear Percutaneous Permeation Kinetics of Timolol. Journal of Pharmaceutical Sciences. 82(12). 1205–1208. 15 indexed citations
13.
Kubota, Kiyoshi, et al.. (1993). Pharmacokinetics and ?-blocking effects of transdermal timolol. European Journal of Clinical Pharmacology. 44(5). 493–495. 8 indexed citations
14.
15.
Kubota, Kiyoshi, et al.. (1991). A Random Walk Method for Percutaneous Drug Absorption Pharmacokinetics: Application to Repeated Administration of a Therapeutic Timolol Patch. Journal of Pharmaceutical Sciences. 80(8). 752–756. 10 indexed citations
16.
Kubota, Kiyoshi, et al.. (1991). Skin irritation induced by topically applied timolol.. British Journal of Clinical Pharmacology. 31(4). 471–475. 15 indexed citations
17.
Kubota, Kiyoshi, Hidefumi Nakamura, Eriko Koyama, et al.. (1990). Simple and sensitive determination of timolol in human plasma and urine by high-performance liquid chromatography with ultraviolet detection. Journal of Chromatography B Biomedical Sciences and Applications. 533. 255–263. 19 indexed citations
18.

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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