Ko Sugiyama

402 total citations
21 papers, 230 citations indexed

About

Ko Sugiyama is a scholar working on Surgery, Oncology and Molecular Biology. According to data from OpenAlex, Ko Sugiyama has authored 21 papers receiving a total of 230 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Surgery, 6 papers in Oncology and 5 papers in Molecular Biology. Recurrent topics in Ko Sugiyama's work include Cholangiocarcinoma and Gallbladder Cancer Studies (4 papers), Astro and Planetary Science (4 papers) and Planetary Science and Exploration (3 papers). Ko Sugiyama is often cited by papers focused on Cholangiocarcinoma and Gallbladder Cancer Studies (4 papers), Astro and Planetary Science (4 papers) and Planetary Science and Exploration (3 papers). Ko Sugiyama collaborates with scholars based in Japan, Thailand and United States. Ko Sugiyama's co-authors include Akinobu Taketomi, Y. Hayashi, Kensuke Nakajima, Matsuo Odaka, Kiyoshi Kuramoto, Naoki Okada, Toshiya Kamiyama, Tatsuya Orimo, Hirofumi Kamachi and Shingo Shimada and has published in prestigious journals such as Journal of Clinical Oncology, SHILAP Revista de lepidopterología and Analytical Chemistry.

In The Last Decade

Ko Sugiyama

20 papers receiving 216 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ko Sugiyama Japan 9 100 79 55 45 40 21 230
Pallavi Patil United States 9 51 0.5× 76 1.0× 34 0.6× 53 1.2× 18 0.5× 31 204
Wenyi Sun United States 5 64 0.6× 203 2.6× 31 0.6× 215 4.8× 58 1.4× 7 448
Jiajun Wang China 10 20 0.2× 78 1.0× 134 2.4× 86 1.9× 34 0.8× 26 378
Shijie Ma China 16 30 0.3× 106 1.3× 37 0.7× 53 1.2× 173 4.3× 28 505
Kerry Deutsch United States 13 52 0.5× 17 0.2× 38 0.7× 115 2.6× 46 1.1× 19 376
Patrick McDermott United States 7 115 1.1× 122 1.5× 10 0.2× 121 2.7× 57 1.4× 8 387
Anna B. Meier Germany 6 43 0.4× 17 0.2× 8 0.1× 5 0.1× 9 0.2× 11 207
Harry E. Ramsey United States 7 20 0.2× 93 1.2× 158 2.9× 180 4.0× 53 1.3× 9 391
Matilde Cañelles Spain 12 13 0.1× 124 1.6× 56 1.0× 7 0.2× 28 0.7× 23 567
Mohammed Alanazi Saudi Arabia 10 20 0.2× 32 0.4× 10 0.2× 29 0.6× 160 4.0× 25 395

Countries citing papers authored by Ko Sugiyama

Since Specialization
Citations

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

Fields of papers citing papers by Ko Sugiyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ko Sugiyama

This figure shows the co-authorship network connecting the top 25 collaborators of Ko Sugiyama. A scholar is included among the top collaborators of Ko Sugiyama 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 Ko Sugiyama. Ko Sugiyama 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.
2.
Sugiyama, Ko, et al.. (2024). Diacylglycerol kinase alpha is a proliferation marker of intrahepatic cholangiocarcinoma associated with the prognosis. Cancer Medicine. 13(9). e7238–e7238. 2 indexed citations
3.
Shen, Weidong, Xiangdong Wang, Hiroki Nakamoto, et al.. (2023). IFN‐γ–STAT1‐mediated NK2R expression is involved in the induction of antitumor effector CD8+ T cells in vivo. Cancer Science. 114(5). 1816–1829. 6 indexed citations
4.
Wang, Xiangdong, Yujiro Toyoshima, Weidong Shen, et al.. (2023). Arginase-1 inhibition reduces migration ability and metastatic colonization of colon cancer cells. SHILAP Revista de lepidopterología. 11(1). 1–1. 16 indexed citations
5.
Sakamoto, Yuzuru, Shingo Shimada, Toshiya Kamiyama, et al.. (2022). Impact of comorbid renal dysfunction in patients with hepatocellular carcinoma on long-term outcomes after curative resection. World Journal of Gastrointestinal Surgery. 14(7). 670–684. 2 indexed citations
6.
Toyoshima, Yujiro, Weidong Shen, Xiangdong Wang, et al.. (2022). IFN‐α/β‐mediated NK2R expression is related to the malignancy of colon cancer cells. Cancer Science. 113(8). 2513–2525. 10 indexed citations
7.
Okada, Naoki, Ko Sugiyama, Yasuhito Shirai, et al.. (2021). Combination therapy for hepatocellular carcinoma with diacylglycerol kinase alpha inhibition and anti-programmed cell death-1 ligand blockade. Cancer Immunology Immunotherapy. 71(4). 889–903. 10 indexed citations
8.
Nakajima, Kensuke, et al.. (2019). Inhibition of moist convection in the atmospheres of Jovian planets: the case of formation of NH4SH by chemical reaction by chemical reaction of NH3 and H2S. AGUFM. 2019. 1 indexed citations
9.
Okada, Naoki, Ko Sugiyama, Hidemitsu Kitamura, & Akinobu Taketomi. (2019). Inhibition of diacylglycerol kinase alpha to augment antitumor effector T cells in tumor-bearing host.. Journal of Clinical Oncology. 37(4_suppl). 293–293. 1 indexed citations
10.
Yokoo, Hideki, Toshiya Kamiyama, Tatsuhiko Kakisaka, et al.. (2019). CD133 and epithelial cell adhesion molecule expressions in the cholangiocarcinoma component are prognostic factors for combined hepatocellular cholangiocarcinoma. Hepatology Research. 50(2). 258–267. 11 indexed citations
11.
Einama, Takahiro, Hirofumi Kamachi, Ko Sugiyama, et al.. (2018). Curative resection of pancreatic ductal adenocarcinoma developing in the remnant pancreas 13�years after distal pancreatectomy for intraductal papillary mucinous neoplasms: A case report. Molecular and Clinical Oncology. 8(3). 417–420. 1 indexed citations
12.
Sugiyama, Ko, Toshiya Kamiyama, Takumi Ohmura, et al.. (2018). [A Case of Locally Advanced Intrahepatic Cholangiocarcinoma Successfully Treated by Conversion Surgery after Hepatic Arterial Infusion Chemotherapy and Radiation Therapy].. PubMed. 45(4). 664–666. 3 indexed citations
13.
Yokoo, Hideki, Toshiya Kamiyama, Masafumi Ohira, et al.. (2018). Clinical and pathological features of combined hepatocellular–cholangiocarcinoma compared with other liver cancers. Journal of Gastroenterology and Hepatology. 34(6). 1074–1080. 63 indexed citations
14.
Sugiyama, Ko, Shigenori Homma, Tadashi Yoshida, et al.. (2017). Three Cases of Small Bowel Obstruction Underneath the Iliac Artery after Radical Hysterectomy. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 78(5). 1144–1149. 2 indexed citations
15.
Sugiyama, Ko, Kensuke Nakajima, Matsuo Odaka, Kiyoshi Kuramoto, & Y. Hayashi. (2013). Numerical simulations of Jupiter’s moist convection layer: Structure and dynamics in statistically steady states. Icarus. 229. 71–91. 36 indexed citations
16.
Sugiyama, Ko, Kensuke Nakajima, Matsuo Odaka, et al.. (2011). Intermittent cumulonimbus activity breaking the three-layer cloud structure of Jupiter. Geophysical Research Letters. 38(13). n/a–n/a. 16 indexed citations
17.
Sugiyama, Ko, et al.. (2002). Surgical Indication of Hepatic Portal Venous Gas. Our Experiences of 12 Cases.. The Japanese Journal of Gastroenterological Surgery. 35(8). 1369–1376. 9 indexed citations
18.
Yonemura, Yutaka, Yoshio Endo, Hiroshi Fujita, et al.. (2001). Inhibition of peritoneal dissemination in human gastric cancer by MMP-7-specific antisense oligonucleotide.. PubMed. 20(2). 205–12. 37 indexed citations
19.
Kumada, Takashi, Satoshi Nakano, Isao Takeda, et al.. (1995). [Clinical evaluation of a recurrent mode after treatment in patients with small hepatocellular carcinoma].. PubMed. 92(9). 1258–65. 1 indexed citations
20.
Imoto, Masami, Y Fukuda, & Ko Sugiyama. (1985). [A case report of cavernous transformation of the portal vein with liver abscess].. PubMed. 30(3). 419–22. 1 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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