Emi Okuyama

2.9k total citations
67 papers, 2.4k citations indexed

About

Emi Okuyama is a scholar working on Pharmacology, Molecular Biology and Plant Science. According to data from OpenAlex, Emi Okuyama has authored 67 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Pharmacology, 21 papers in Molecular Biology and 21 papers in Plant Science. Recurrent topics in Emi Okuyama's work include Microbial Natural Products and Biosynthesis (17 papers), Fungal Biology and Applications (13 papers) and Phytochemistry and Biological Activities (9 papers). Emi Okuyama is often cited by papers focused on Microbial Natural Products and Biosynthesis (17 papers), Fungal Biology and Applications (13 papers) and Phytochemistry and Biological Activities (9 papers). Emi Okuyama collaborates with scholars based in Japan, Bangladesh and Thailand. Emi Okuyama's co-authors include Haruhiro Fujimoto, Mikio Yamazaki, Masami Ishibashi, Samir Kumar Sadhu, Mikio Yamazaki, Makoto Kobayashi, Etsuko Nakamura, Kazuhiro Umeyama, Tomonori Nakamura and Chowdhury Faiz Hossain and has published in prestigious journals such as British Journal of Pharmacology, Biochemical Pharmacology and Journal of Ethnopharmacology.

In The Last Decade

Emi Okuyama

67 papers receiving 2.2k citations

Peers

Emi Okuyama

PHARM

Kaoru Kinoshita Japan

Masatake Niwa Japan

Ushio Sankawa Japan

Walter C. Taylor Australia

Jun‐Shan Yang China

Satoshi Takamatsu Japan

Munehisa Arisawa Japan

Ilias Muhammad United States

Mikio Yamazaki Japan

Andrea Vasas Hungary

Kaoru Kinoshita Japan

Emi Okuyama

945 ×0.9

550 ×0.7

697 ×1.0

PHARM

369 ×0.9

531 ×1.5

PHARM

Citations per year, relative to Emi Okuyama Emi Okuyama (= 1×) peers Kaoru Kinoshita

Countries citing papers authored by Emi Okuyama

Since Specialization

Citations

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

Fields of papers citing papers by Emi Okuyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Emi Okuyama

This figure shows the co-authorship network connecting the top 25 collaborators of Emi Okuyama. A scholar is included among the top collaborators of Emi Okuyama 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 Emi Okuyama. Emi Okuyama 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

Sadhu, Samir Kumar, Emi Okuyama, Haruhiro Fujimoto, Masami Ishibashi, & Erdem Yeşilada. (2006). Prostaglandin inhibitory and antioxidant components of Cistus laurifolius, a Turkish medicinal plant. Journal of Ethnopharmacology. 108(3). 371–378. 73 indexed citations

Ishibashi, Masami, Emi Okuyama, Takashi Koyano, et al.. (2000). Cytotoxic Pregnanes from Leaves of Adenium obesum. 54(3). 158–159. 4 indexed citations

Fujimoto, Haruhiro, Etsuko Nakamura, Emi Okuyama, & Masami Ishibashi. (2000). Immunomodulatory Constituents from an Ascomycete, Emericella aurantio-brunnea.. Chemical and Pharmaceutical Bulletin. 48(10). 1436–1441. 29 indexed citations

Okuyama, Emi, et al.. (1999). Interaction of anisatin with rat brain γ-aminobutyric acida receptors: allosteric modulation by competitive antagonists. Biochemical Pharmacology. 58(4). 617–621. 14 indexed citations

Fujimoto, Haruhiro, et al.. (1999). Immunomodulatory Constituents from an Ascomycete, Microascus tardifaciens.. Chemical and Pharmaceutical Bulletin. 47(10). 1426–1432. 86 indexed citations

Ikeda, Tomoko, Yoshihisa Ozoe, Emi Okuyama, et al.. (1999). Anisatin modulation of the γ‐aminobutyric acid receptor‐channel in rat dorsal root ganglion neurons. British Journal of Pharmacology. 127(7). 1567–1576. 23 indexed citations

Fujimoto, Haruhiro, et al.. (1999). Immunomodulatory Constituents from Three Ascomycetes, Gelasinospora heterospora, G. multiforis, and G. longispora.. Chemical and Pharmaceutical Bulletin. 47(1). 71–76. 24 indexed citations

Ishibashi, Masami, Emi Okuyama, Kanki Komiyama, et al.. (1999). Casein kinase II inhibitors isolated form two Brazilian plants Hymenaea parvifolia and Wulffia baccata. Bioorganic & Medicinal Chemistry Letters. 9(15). 2157–2160. 7 indexed citations

Hasegawa, Atsushi, Hiroyoshi Nakamura, Toshiko Watanabe, et al.. (1999). Estimation of Chemical Structure of Notopterol Metabolites.. Biological and Pharmaceutical Bulletin. 22(7). 725–726. 2 indexed citations

10.

Okuyama, Emi, Tetsuya Hasegawa, Haruhiro Fujimoto, et al.. (1998). Analgesic Components of Glehnia Root (Glehnia littoralis). Natural medicines = 生薬學雜誌. 52(6). 491–501. 8 indexed citations

11.

Okuyama, Emi, et al.. (1996). Pharmacologically Active Components of a Peruvian Medicinal Plant, Huanarpo (Jatropha cilliata).. Chemical and Pharmaceutical Bulletin. 44(2). 333–336. 32 indexed citations

12.

Hossain, Chowdhury Faiz, et al.. (1996). A New Series of Coumarin Derivatives Having Monoamine Oxidase Inhibitory Activity from Monascus ankal.. Chemical and Pharmaceutical Bulletin. 44(8). 1535–1539. 68 indexed citations

13.

Okuyama, Emi, Kazuhiro Umeyama, Mikio Yamazaki, Yasuhiro Kinoshita, & Yoshikazu Yamamoto. (1995). Usnic Acid and Diffractaic Acid as Analgesic and Antipyretic Components ofUsnea diffracta. Planta Medica. 61(2). 113–115. 117 indexed citations

14.

Okuyama, Emi, et al.. (1995). Pharmacologically Active Components of Todopon Puok (Fagraea racemosa), a Medicinal Plant from Borneo.. Chemical and Pharmaceutical Bulletin. 43(12). 2200–2204. 61 indexed citations

15.

Okuyama, Emi, Kazuhiro Umeyama, Yukie Saito, Mikio Yamazaki, & Motoyoshi Satake. (1993). Ascaridole as a Pharmacologically Active Principle of "Paico", a Medicinal Peruvian Plant.. Chemical and Pharmaceutical Bulletin. 41(7). 1309–1311. 38 indexed citations

16.

Okuyama, Emi, et al.. (1993). Analgesic Component of Notopterygium incisum Ting.. Chemical and Pharmaceutical Bulletin. 41(5). 926–929. 42 indexed citations

17.

Sato, Kyoko, Yukihiro Goda, Yoko Kawasaki, et al.. (1992). Characteristic of Anthraquinone Production in Plant Roots and Cell Suspension Cultures of Rubia tinctorum and R. akane.. Plant tissue culture letters. 9(3). 220–226. 8 indexed citations

18.

Okuyama, Emi, et al.. (1992). Analgesic Components from Bornean Medicinal Plants, Tabernaemontana pauciflora BLUME and Tabernaemontana pandacaqui POIR.. Chemical and Pharmaceutical Bulletin. 40(8). 2075–2079. 33 indexed citations

19.

Okuyama, Emi, Chowdhury Faiz Hossain, & Mikio Yamazaki. (1991). Monoamine Oxidase Inhibitors from a Lichen, Solorina crocea (L.) ACH.. 45(2). 159–162. 5 indexed citations

20.

Okuyama, Emi, Lihong Gao, & Mikio Yamazaki. (1990). Studies on Pharmacologically Active Principles from Indonesian Crude Drugs. III. Toxic Components from Brucea javanica (L.) MERR.. YAKUGAKU ZASSHI. 110(11). 834–838. 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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