U Okamoto

979 total citations
65 papers, 757 citations indexed

About

U Okamoto is a scholar working on Molecular Biology, Cancer Research and Biotechnology. According to data from OpenAlex, U Okamoto has authored 65 papers receiving a total of 757 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Molecular Biology, 22 papers in Cancer Research and 19 papers in Biotechnology. Recurrent topics in U Okamoto's work include Protease and Inhibitor Mechanisms (21 papers), Enzyme Production and Characterization (19 papers) and Coagulation, Bradykinin, Polyphosphates, and Angioedema (15 papers). U Okamoto is often cited by papers focused on Protease and Inhibitor Mechanisms (21 papers), Enzyme Production and Characterization (19 papers) and Coagulation, Bradykinin, Polyphosphates, and Angioedema (15 papers). U Okamoto collaborates with scholars based in Japan, Czechia and United Kingdom. U Okamoto's co-authors include Shosuke Okamoto, Yuko Tsuda, Keiko Wanaka, Akiko Hijikata‐Okunomiya, Yumiko Takada, Yoshio Okada, Yoshio Okada, H Mihara, Junichiro Yamamoto and Akikazu Takada and has published in prestigious journals such as Biochemical and Biophysical Research Communications, Annals of the New York Academy of Sciences and Thrombosis and Haemostasis.

In The Last Decade

U Okamoto

60 papers receiving 692 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
U Okamoto Japan 14 219 211 198 161 135 65 757
Akiko Hijikata‐Okunomiya Japan 13 132 0.6× 137 0.6× 178 0.9× 59 0.4× 73 0.5× 38 477
Keiko Wanaka Japan 14 140 0.6× 191 0.9× 226 1.1× 60 0.4× 103 0.8× 55 583
Jan‐Erik Niléhn Sweden 15 130 0.6× 102 0.5× 439 2.2× 64 0.4× 44 0.3× 22 925
Marianne Kjalke Denmark 21 224 1.0× 94 0.4× 966 4.9× 65 0.4× 69 0.5× 50 1.3k
M. Kamiyama United States 13 414 1.9× 31 0.1× 187 0.9× 176 1.1× 108 0.8× 34 951
Ann‐Catrine Teger‐Nilsson Sweden 11 97 0.4× 55 0.3× 176 0.9× 21 0.1× 54 0.4× 28 487
Els Brouwers Belgium 16 230 1.1× 145 0.7× 186 0.9× 197 1.2× 29 0.2× 35 1.0k
Daphne Stewart United States 10 321 1.5× 80 0.4× 133 0.7× 28 0.2× 156 1.2× 42 666
Chun Deng China 15 565 2.6× 152 0.7× 42 0.2× 24 0.1× 299 2.2× 40 1.2k
Simona Stivala Switzerland 14 176 0.8× 24 0.1× 105 0.5× 41 0.3× 33 0.2× 27 496

Countries citing papers authored by U Okamoto

Since Specialization
Citations

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

Fields of papers citing papers by U Okamoto

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of U Okamoto

This figure shows the co-authorship network connecting the top 25 collaborators of U Okamoto. A scholar is included among the top collaborators of U Okamoto 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 U Okamoto. U Okamoto 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.
Okada, Yoshio, et al.. (2000). Development of Potent and Selective Plasmin and Plasma Kallikrein Inhibitors and Studies on the Structure-Activity Relationship.. Chemical and Pharmaceutical Bulletin. 48(12). 1964–1972. 29 indexed citations
2.
Okada, Yoshio, Yuko Tsuda, Keiko Wanaka, et al.. (2000). Development of plasmin and plasma kallikrein selective inhibitors and their effect on M1 (melanoma) and ht29 cell lines. Bioorganic & Medicinal Chemistry Letters. 10(19). 2217–2221. 13 indexed citations
3.
Okada, Yoshio, et al.. (1999). Development of plasma kallikrein selective inhibitors. Biopolymers. 51(1). 41–50. 17 indexed citations
4.
Wanaka, Keiko, Shosuke Okamoto, U Okamoto, et al.. (1998). Purification Method for Human Plasma Kallikrein by a New Affinity Chromatography.. Biological and Pharmaceutical Bulletin. 21(2). 105–108. 3 indexed citations
5.
Okamoto, Shosuke, Akiko Hijikata‐Okunomiya, Keiko Wanaka, Yoshio Okada, & U Okamoto. (1997). Enzyme-Controlling Medicines: Introduction. Seminars in Thrombosis and Hemostasis. 23(6). 493–501. 87 indexed citations
6.
Wanaka, Keiko, et al.. (1996). Use of an active center-directed plasmin inhibitor elucidates the multiplicity of plasmin actions. Thrombosis Research. 82(1). 79–86. 7 indexed citations
7.
8.
Teno, Naoki, et al.. (1991). Development of Selective Inhibitors against Plasma Kallikrein.. Chemical and Pharmaceutical Bulletin. 39(11). 2930–2936. 6 indexed citations
9.
Teno, Naoki, et al.. (1991). Development of Active Center-Directed Inhibitors against Plasmin.. Chemical and Pharmaceutical Bulletin. 39(9). 2340–2346. 16 indexed citations
10.
Okamoto, Shosuke, et al.. (1989). Highly Selective Synthetic Inhibitors with Regard to Plasma-Kallikrein Activities. Advances in experimental medicine and biology. 247B. 29–34. 6 indexed citations
11.
Okamoto, Shosuke, U Okamoto, Akiko Hijikata‐Okunomiya, Keiko Wanaka, & Yasunori Okada. (1988). Recent studies of the synthetic selective inhibitors; with special reference to non-plasmin fibrinolytic enzyme, plasmin and plasma-kallikrein. Thrombosis Research. 49. 131–141. 3 indexed citations
12.
Tsuda, Yuko, et al.. (1988). Synthesis of tripeptide amide derivatives and examination of their inhibitory effect on human leukocyte elastase (HLE).. Chemical and Pharmaceutical Bulletin. 36(8). 3119–3124. 1 indexed citations
13.
Okamoto, U, et al.. (1987). Increase of Nonplasmin Fibrinolytic Activity in the Lung and Spleen of Streptozotocin-Induced Diabetic Rats. Pathophysiology of Haemostasis and Thrombosis. 17(3). 154–161. 1 indexed citations
14.
Nakaya, Yukiko, et al.. (1987). Enzymatic properties of human leukocyte cathepsin G and its complex with .ALPHA.2-macroglobulin.. Blood & Vessel. 18(3). 257–260. 3 indexed citations
15.
Tsuda, Yuko, et al.. (1987). Synthesis of peptide chloromethyl ketones and examination of their inhibitory effects on human spleen fibrinolytic proteinase(SFP) and human leukocyte elastase(LE).. Chemical and Pharmaceutical Bulletin. 35(9). 3576–3584. 12 indexed citations
16.
17.
18.
Okamoto, U, et al.. (1982). [Studies on the plasminogen activating system in human milk. VI. Differences in properties between milk activator and glandular kallikrein].. PubMed. 45(6). 1099–106. 2 indexed citations
19.
Takada, Akikazu, Yumiko Takada, & U Okamoto. (1964). FRACTIONATION OF PLASMINOGEN ACTIVATOR AND PROACTIVATOR IN TISSUE AND BLOOD BY GEL FILTRATION. The Keio Journal of Medicine. 13(4). 187–194. 9 indexed citations
20.
Okamoto, Shosuke, et al.. (1964). AN ACTIVE STEREO-ISOMER (TRANS-FORM) OF AMCHA AND ITS ANTIFIBRINOLYTIC (ANTI-PLASMINIC) ACTION IN VITRO AND IN VIVO. The Keio Journal of Medicine. 13(4). 177–185. 82 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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