S. Okamura

4.7k total citations
50 papers, 1.3k citations indexed

About

S. Okamura is a scholar working on Pulmonary and Respiratory Medicine, Surgery and Gastroenterology. According to data from OpenAlex, S. Okamura has authored 50 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Pulmonary and Respiratory Medicine, 14 papers in Surgery and 10 papers in Gastroenterology. Recurrent topics in S. Okamura's work include Gastric Cancer Management and Outcomes (9 papers), Gastrointestinal Tumor Research and Treatment (7 papers) and Metastasis and carcinoma case studies (7 papers). S. Okamura is often cited by papers focused on Gastric Cancer Management and Outcomes (9 papers), Gastrointestinal Tumor Research and Treatment (7 papers) and Metastasis and carcinoma case studies (7 papers). S. Okamura collaborates with scholars based in Japan, Italy and United States. S. Okamura's co-authors include Satoshi Yamashita, Satoru Kakizaki, Naondo Sohara, Hiroshi Ishihara, Yoshikuni Onozato, Masataka Mori, Masatomo Mori, Masatomo Mori, Nobuyuki Uchida and Yukio Nagamachi and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Oncology and Biochemical and Biophysical Research Communications.

In The Last Decade

S. Okamura

47 papers receiving 1.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
S. Okamura Japan 19 396 342 326 300 266 50 1.3k
Junichi Sakamoto Japan 24 684 1.7× 389 1.1× 735 2.3× 586 2.0× 213 0.8× 98 2.2k
Alper Sevinç Türkiye 22 452 1.1× 227 0.7× 493 1.5× 244 0.8× 73 0.3× 125 1.6k
Andrew T. Kunzmann United Kingdom 18 371 0.9× 394 1.2× 361 1.1× 326 1.1× 83 0.3× 32 1.3k
Takashi Mizutani Japan 20 357 0.9× 442 1.3× 281 0.9× 307 1.0× 73 0.3× 85 1.4k
Tao Fu China 22 300 0.8× 376 1.1× 275 0.8× 603 2.0× 136 0.5× 85 1.8k
Bijan Moghimi-Dehkordi Iran 22 317 0.8× 500 1.5× 578 1.8× 140 0.5× 473 1.8× 67 1.4k
Meijin Huang China 19 220 0.6× 401 1.2× 561 1.7× 284 0.9× 47 0.2× 91 1.2k
Hartley Stern Canada 22 217 0.5× 722 2.1× 730 2.2× 181 0.6× 92 0.3× 47 1.6k
Andrzej Deptała Poland 22 338 0.9× 205 0.6× 519 1.6× 673 2.2× 37 0.1× 105 1.7k

Countries citing papers authored by S. Okamura

Since Specialization
Citations

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

Fields of papers citing papers by S. Okamura

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S. Okamura

This figure shows the co-authorship network connecting the top 25 collaborators of S. Okamura. A scholar is included among the top collaborators of S. Okamura 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 S. Okamura. S. Okamura 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.
Bolzonella, R., J. Alozy, R. Ballabriga, et al.. (2024). Timing resolution performance of Timepix4 bump-bonded assemblies. Journal of Instrumentation. 19(7). P07021–P07021. 6 indexed citations
2.
Arezzo, Alberto, Roberto Passera, Yutaka Saito, et al.. (2013). Systematic review and meta-analysis of endoscopic submucosal dissection versus transanal endoscopic microsurgery for large noninvasive rectal lesions. Surgical Endoscopy. 28(2). 427–438. 107 indexed citations
3.
Fujiwara, Hitoshi, S. Okamura, Atsushi Shiozaki, et al.. (2010). Elevated serum CRP levels after induction chemoradiotherapy reflect poor treatment response in association with IL‐6 in serum and local tumor site in patients with advanced esophageal cancer. Journal of Surgical Oncology. 103(1). 62–68. 44 indexed citations
4.
5.
Okamura, S., Hitoshi Fujiwara, Teruhisa Sonoyama, et al.. (2009). Management of Acute Superior Mesenteric Artery Occlusion by Thrombolytic Therapy. Case Reports in Gastroenterology. 3(3). 300–305. 2 indexed citations
6.
Okamura, S., Yoshiki Tanaka, Kyoko Morita, et al.. (2009). [Crohn's disease complicating psoas abscess treated by drainage and infliximab administration].. PubMed. 106(9). 1364–9.
7.
Okumura, Shigeru, Ryota Kobayashi, S. Okamura, et al.. (2008). Hyperexpression of NOD2 in intestinal mast cells of Crohn's disease patients: Preferential expression of inflammatory cell-recruiting molecules via NOD2 in mast cells. Clinical Immunology. 130(2). 175–185. 33 indexed citations
8.
Kobayashi, Ryota, S. Okamura, Tatsukuni Ohno, et al.. (2007). Hyperexpression of FcγRI and Toll-like receptor 4 in the intestinal mast cells of Crohn’s disease patients. Clinical Immunology. 125(2). 149–158. 20 indexed citations
9.
Kakizaki, Satoru, Hiroshi Ishihara, Naondo Sohara, et al.. (2007). Endoscopic management of duodenal diverticular bleeding. Gastrointestinal Endoscopy. 66(5). 1042–1049. 8 indexed citations
10.
Ishihara, Hiroshi, et al.. (2007). A Large Flat Adenoma Located on the Pylorus Ring Successfully Treated by Endoscopic Submucosal Dissection. Digestive Diseases and Sciences. 52(7). 1738–1740. 6 indexed citations
11.
Onozato, Yoshikuni, Hiroshi Ishihara, Naondo Sohara, et al.. (2006). Endoscopic submucosal dissection for early gastric cancers and large flat adenomas. Endoscopy. 38(10). 980–986. 119 indexed citations
12.
Okamura, S., et al.. (2005). Case-mix payment in Japanese medical care. Health Policy. 74(3). 282–286. 55 indexed citations
13.
Tanaka, Susumu, et al.. (2005). Zinc ions suppress mitogen-activated interleukin-2 production in Jurkat cells. Biochemical and Biophysical Research Communications. 335(1). 162–167. 54 indexed citations
14.
Okamura, S., et al.. (2003). Increased Activity and Expression of Phospholipase D2 in Human Colorectal Cancer. Oncology Research Featuring Preclinical and Clinical Cancer Therapeutics. 14(1). 31–37. 27 indexed citations
15.
Ishikawa, Takeshi, et al.. (2003). Metronidazole Plus Ciprofloxacin Therapy for Active Crohn's Disease. Internal Medicine. 42(4). 318–321. 12 indexed citations
16.
Okamura, S., et al.. (2000). Activation of mucosal phospholipase D in a rat model of colitis. Journal of Gastroenterology and Hepatology. 15(10). 1138–1144. 2 indexed citations
17.
Okamura, S., et al.. (2000). Intestinal Behçet's disease associated with generalized myositis. Gastrointestinal Endoscopy. 51(3). 359–361. 7 indexed citations
18.
Uchida, Nobuyuki, S. Okamura, Yukio Nagamachi, & Satoshi Yamashita. (1997). Increased phospholipase D activity in human breast cancer. Journal of Cancer Research and Clinical Oncology. 123(5). 280–285. 75 indexed citations
19.
Okamura, S. & Takeshi Sekiguchi. (1992). [Irritable bowel syndrome--criteria, sub-classification, etiology].. PubMed. 50(11). 2686–90. 1 indexed citations
20.
Okamura, S., et al.. (1985). Granulocytopenia in histiocytic necrotizing lymphadenitis without granulocytic infiltration: decreased CFU-C and an inhibitory effect of the serum.. PubMed. 48(4). 1053–8. 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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