E Okajima

561 total citations
52 papers, 417 citations indexed

About

E Okajima is a scholar working on Surgery, Molecular Biology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, E Okajima has authored 52 papers receiving a total of 417 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Surgery, 15 papers in Molecular Biology and 11 papers in Pulmonary and Respiratory Medicine. Recurrent topics in E Okajima's work include Bladder and Urothelial Cancer Treatments (14 papers), Amino Acid Enzymes and Metabolism (9 papers) and Urinary and Genital Oncology Studies (8 papers). E Okajima is often cited by papers focused on Bladder and Urothelial Cancer Treatments (14 papers), Amino Acid Enzymes and Metabolism (9 papers) and Urinary and Genital Oncology Studies (8 papers). E Okajima collaborates with scholars based in Japan, Netherlands and United States. E Okajima's co-authors include Yoshihiko Hirao, Kaoru Yamada, S. Ozono, Hirotsugu Uemura, F.M.J. Debruyne, Egbert Oosterwijk, Yoshihiro Motomiya, Masahiro Tsutsumi, Yoichi Konishi and Ayumi Denda and has published in prestigious journals such as The Journal of Urology, International Journal of Cancer and European Urology.

In The Last Decade

E Okajima

49 papers receiving 383 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
E Okajima Japan 11 168 128 101 85 70 52 417
Jalaluddin Bhuiyan Canada 8 276 1.6× 152 1.2× 29 0.3× 44 0.5× 38 0.5× 10 472
Tomoyuki Ishibe Japan 12 275 1.6× 147 1.1× 164 1.6× 114 1.3× 91 1.3× 75 541
M Kitamura Japan 9 87 0.5× 176 1.4× 52 0.5× 12 0.1× 84 1.2× 24 372
Judith Bellemare Canada 13 59 0.4× 289 2.3× 95 0.9× 21 0.2× 120 1.7× 18 594
Shuji Kotoh Japan 12 134 0.8× 243 1.9× 86 0.9× 24 0.3× 251 3.6× 24 473
Gabriel Olmedilla Spain 12 55 0.3× 237 1.9× 239 2.4× 30 0.4× 125 1.8× 17 556
Rohit Upadhyay India 18 186 1.1× 447 3.5× 93 0.9× 14 0.2× 146 2.1× 49 743
Yuzo Minami Japan 11 89 0.5× 81 0.6× 129 1.3× 7 0.1× 123 1.8× 35 373
Robin Gurganus United States 9 73 0.4× 74 0.6× 314 3.1× 22 0.3× 61 0.9× 15 459
Mitsuhiro Miyazaki Japan 13 140 0.8× 156 1.2× 137 1.4× 12 0.1× 100 1.4× 22 397

Countries citing papers authored by E Okajima

Since Specialization
Citations

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

Fields of papers citing papers by E Okajima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of E Okajima

This figure shows the co-authorship network connecting the top 25 collaborators of E Okajima. A scholar is included among the top collaborators of E Okajima 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 E Okajima. E Okajima 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, Hiroshi, Sadao Kamidono, Äkïhïko Okuyama, et al.. (2000). A comparative study of terazosin and tamsulosin for symptomatic benign prostatic hyperplasia in Japanese patients. British Journal of Urology. 85(6). 676–681. 41 indexed citations
2.
Kotake, T, M Usami, Hideyuki Akaza, et al.. (1999). Goserelin Acetate with or without Antiandrogen or Estrogen in the Treatment of Patients with Advanced Prostate Cancer: A Multicenter, Randomized, Controlled Trial in Japan. Japanese Journal of Clinical Oncology. 29(11). 562–570. 27 indexed citations
3.
Okajima, E, Masahiro Tsutsumi, S. Ozono, et al.. (1998). Inhibitory Effect of Tomato Juice on Rat Urinary Bladder Carcinogenesis After N-Butyl-N-(4-hydroxybutyl)Nitrosamine Initiation. The Journal of Urology. 160(5). 1930–1931. 1 indexed citations
4.
Takahama, Makoto, Masahiro Tsutsumi, Toshifumi Tsujiuchi, et al.. (1998). Frequent Expression of the Vascular Endothelial Growth Factor in Human Non-small-cell Lung Cancers. Japanese Journal of Clinical Oncology. 28(3). 176–181. 14 indexed citations
5.
6.
Akaza, Hideyuki, et al.. (1997). [Bropirimine (U-54461S) late phase II clinical study for carcinoma in situ of the bladder. Japan Bropirimine Study Group].. PubMed. 24(1). 77–85. 2 indexed citations
7.
Ohashi, Kazuo, Toshifumi Tsujiuchi, Eisaku Kobayashi, et al.. (1996). Disturbance of the Cell Cycle with Colchicine Enhances the Growth Advantage of Diethylnitrosamine‐initiated Hepatocytes in Rats. Japanese Journal of Cancer Research. 87(1). 5–9. 12 indexed citations
8.
Yamamoto, Masashi, Osamu Natsume, Kaoru Yamada, et al.. (1996). Urethral opening pressure in patients with myelodysplasia. Spinal Cord. 34(8). 493–497. 2 indexed citations
9.
Tsujiuchi, Toshifumi, Akira Kido, Dai Nakae, et al.. (1996). Infrequent Ki-ras and an absence of p53 mutations in hepatocellular carcinomas induced by a choline deficient l-amino acid defined diet in rats. Cancer Letters. 108(1). 137–141. 9 indexed citations
10.
11.
Kurth, K. H., et al.. (1995). CURRENT METHODS OF ASSESSING AND TREATING CARCINOMA IN SITU OF THE BLADDER WITH OR WITHOUT INVOLVEMENT OF THE PROSTATIC URETHRA. International Journal of Urology. 2(s2). 8–22. 17 indexed citations
12.
Okajima, E, et al.. (1994). A Case Report of Synchronous Triple Cancer Resected Simultaneously. Japanese Journal of Clinical Oncology. 24(3). 166–70. 9 indexed citations
13.
Uemura, Hirotsugu, E Okajima, F.M.J. Debruyne, & Egbert Oosterwijk. (1994). Internal image anti‐idiotype antibodies related to renal‐cell carcinoma‐associated antigen G250. International Journal of Cancer. 56(4). 609–614. 28 indexed citations
14.
Tanaka, Nobuyuki, Akihide Hirayama, Shoji Samma, et al.. (1991). [A case of squamous cell carcinoma of the urinary bladder associated with bladder calculi].. PubMed. 37(1). 77–81. 2 indexed citations
15.
Hayashi, Yujiro, et al.. (1987). [Primary transitional cell carcinoma of the male urethra: report of a case].. PubMed. 33(3). 428–32. 3 indexed citations
16.
Takahashi, S, Hitoshi Momose, Kinro Sasaki, et al.. (1987). Effects of single chemotherapeutic agents on development of urinary bladder tumor induced by N-butyl-N-(4-hydroxybutyl) nitrosamine (BBN) in rats. Urological Research. 15(6). 329–34. 10 indexed citations
17.
Hirao, Yoshihiko, et al.. (1987). Scanning electron microscopy of changes in the urinary bladder in dogs treated with N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN). Urological Research. 15(1). 25–9. 4 indexed citations
18.
Samma, Shoji, et al.. (1985). [Effect of UFT on urinary bladder tumors in rats induced by N-butyl-N-(4-hydroxybutyl)nitrosamine].. PubMed. 12(8). 1661–8. 1 indexed citations
19.
Yoshida, Keisuke, et al.. (1984). [Congenital urethral diverticulum in a male infant: a case report].. PubMed. 30(4). 507–11. 1 indexed citations
20.
Okajima, E, et al.. (1973). Effects of foreign bodies on development of urinary bladder tumors in rats treated with N-butyl-N-(4-hydroxybutyl) nitrosamine. Urological Research. 1(4). 177–181. 9 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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