K Sumii

2.0k total citations
61 papers, 1.7k citations indexed

About

K Sumii is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Gastroenterology. According to data from OpenAlex, K Sumii has authored 61 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Surgery, 18 papers in Pulmonary and Respiratory Medicine and 14 papers in Gastroenterology. Recurrent topics in K Sumii's work include Helicobacter pylori-related gastroenterology studies (31 papers), Gastric Cancer Management and Outcomes (17 papers) and Gastroesophageal reflux and treatments (9 papers). K Sumii is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (31 papers), Gastric Cancer Management and Outcomes (17 papers) and Gastroesophageal reflux and treatments (9 papers). K Sumii collaborates with scholars based in Japan, United States and Germany. K Sumii's co-authors include Ken Haruma, Goro Kajiyama, Masaharu Yoshihara, Yasuhiko Kitadai, Kunihiko Komoto, Yasukazu Ohmoto, Wataru Yasui, Hiroyuki Kawaguchi, Hiroshi Yokozaki and I. J. Fidler and has published in prestigious journals such as Gastroenterology, Annals of the New York Academy of Sciences and British Journal of Cancer.

In The Last Decade

K Sumii

59 papers receiving 1.6k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
K Sumii Japan 22 932 590 487 407 393 61 1.7k
Shusaku Tsutsui Japan 23 697 0.7× 625 1.1× 306 0.6× 482 1.2× 390 1.0× 65 1.6k
Takeshi Oohara Japan 22 635 0.7× 618 1.0× 516 1.1× 250 0.6× 230 0.6× 64 1.4k
Shinji Kitamura Japan 25 747 0.8× 891 1.5× 421 0.9× 407 1.0× 382 1.0× 84 1.7k
Stephan Gretschel Germany 18 839 0.9× 1.1k 1.9× 572 1.2× 451 1.1× 593 1.5× 54 2.0k
Yuyong Tan China 23 813 0.9× 730 1.2× 674 1.4× 745 1.8× 733 1.9× 130 2.3k
Jan J. Koornstra Netherlands 18 424 0.5× 463 0.8× 524 1.1× 200 0.5× 413 1.1× 32 1.5k
A. Beham Germany 20 389 0.4× 219 0.4× 285 0.6× 151 0.4× 354 0.9× 69 1.3k
Miki Ohta Japan 20 395 0.4× 420 0.7× 839 1.7× 133 0.3× 980 2.5× 35 1.9k
Kejian Guo China 18 543 0.6× 305 0.5× 296 0.6× 343 0.8× 339 0.9× 49 1.2k
Mitsuo Kishimoto Japan 21 410 0.4× 532 0.9× 507 1.0× 189 0.5× 422 1.1× 103 1.3k

Countries citing papers authored by K Sumii

Since Specialization
Citations

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

Fields of papers citing papers by K Sumii

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of K Sumii

This figure shows the co-authorship network connecting the top 25 collaborators of K Sumii. A scholar is included among the top collaborators of K Sumii 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 K Sumii. K Sumii 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.
Kamada, Tomoari, Jiro Hata, Hiroaki Kusunoki, et al.. (2005). Effect of famotidine on recurrent bleeding after successful endoscopic treatment of bleeding peptic ulcer. Alimentary Pharmacology & Therapeutics. 21(s2). 73–78. 4 indexed citations
2.
Hiyama, Toru, Ken Haruma, Yasuhiko Kitadai, et al.. (2001). c-myc gene mutation in gastric mucosa-associated lymphoid tissue (MALT) lymphoma and diffuse large B-cell lymphoma. Oncology Reports. 8(2). 289–92. 8 indexed citations
3.
Tanaka, Shinji, Ken Haruma, Masaharu Yoshihara, et al.. (2000). Predictive value of cathepsin D and Ki-67 expression at the deepest penetration site for lymph node metastases in gastric cancer.. Oncology Reports. 7(4). 713–8. 21 indexed citations
4.
Kamada, Tomoari, Ken Haruma, Eiji Miyoshi, et al.. (2000). Cetraxate, a mucosal protective agent, combined with omeprazole, amoxycillin, and clarithromycin increases the eradication rate of Helicobacter pylori in smokers. Alimentary Pharmacology & Therapeutics. 14(8). 1089–1094. 20 indexed citations
5.
Kitadai, Yasuhiko, Ken Haruma, Kazuhito Naka, et al.. (1999). Transfection of interleukin-8 increases angiogenesis and tumorigenesis of human gastric carcinoma cells in nude mice. British Journal of Cancer. 81(4). 647–653. 131 indexed citations
6.
Kitadai, Yasuhiko, Ken Haruma, Shogo Tanaka, et al.. (1998). Significance of vessel count and vascular endothelial growth factor in human esophageal carcinomas.. PubMed. 4(9). 2195–200. 122 indexed citations
7.
Haruma, Ken, et al.. (1997). Effects of octreotide, a somatostatin analogue, on gastric function evaluated by real‐time ultrasonography. Alimentary Pharmacology & Therapeutics. 11(1). 177–184. 20 indexed citations
8.
Haruma, Ken, K Sumii, Masaharu Yoshihara, et al.. (1995). Helicobacter pyloriInfection Is Associated with Low Antral Somatostatin Content in Young Adults Implications for the Pathogenesis of Hypergastrinemia. Scandinavian Journal of Gastroenterology. 30(6). 550–553. 27 indexed citations
9.
Hata, Jiro, Ken Haruma, Hisashi Yamanaka, et al.. (1994). Ultrasonographic evaluation of the bowel wall in inflammatory bowel disease: Comparison of in vivo and in vitro studies. Abdominal Imaging. 19(5). 395–399. 62 indexed citations
10.
Fujimura, Jiro, Ken Haruma, Jiro Hata, et al.. (1994). Quantitation of Duodenogastric Reflux and Antral Motility by Color Doppler Ultrasonography: Study in Healthy Volunteers and Patients with Gastric Ulcer. Scandinavian Journal of Gastroenterology. 29(10). 897–902. 44 indexed citations
11.
Tanaka, Shinji, Mikio Akagi, Toshio Nishida, et al.. (1994). [Assessment for development of superficial colorectal neoplasm--endoscopic and clinicopathologic analysis of 149 submucosal invasive carcinomas].. PubMed. 91(7). 1182–9. 2 indexed citations
12.
Kimura, Manabu, et al.. (1993). Characteristics of Teen-age Patients with Juvenile Duodenal Ulcer Relation between Inherited Hyperpepsinogenemia I and Duodenal Ulcer. Scandinavian Journal of Gastroenterology. 28(1). 25–30. 11 indexed citations
13.
Sumii, K, Yasuhiko Hayashi, Yasuo Maeda, et al.. (1993). The short- and long-term prognosis for acute myocardial infarction after emergency coronary angioplasty.. Japanese Circulation Journal. 57(12). 1137–1149. 1 indexed citations
14.
Haruma, Ken, et al.. (1993). Gastric Acid Secretion, Serum Pepsinogen I, and Serum Gastrin in Japanese with Gastric Hyperplastic Polyps or Polypoid-Type Early Gastric Carcinoma. Scandinavian Journal of Gastroenterology. 28(7). 633–637. 41 indexed citations
15.
Sumii, K, Masaharu Sumii, Ken Haruma, et al.. (1993). Role of histamine2 receptor in increased expression of rat gastric H(+)-K(+)-ATPase alpha-subunit induced by omeprazole. American Journal of Physiology-Gastrointestinal and Liver Physiology. 265(4). G752–G758. 22 indexed citations
16.
Haruma, Ken, et al.. (1992). Rapid growth and difficulty of early detection of scirrhous carcinoma of the stomach.. PubMed. 87(1). 31–6. 10 indexed citations
17.
Teixeira, Carlos Roberto, Ken Haruma, H Teshima, et al.. (1991). Endoscopic therapy for gastric cancer in patients more than 80 years old.. PubMed. 86(6). 725–8. 5 indexed citations
18.
Wu, S. Vincent, K Sumii, & John H. Walsh. (1990). Studies of Regulation of Gastrin Synthesis and Post‐translational Processing by Molecular Biology Approachesa. Annals of the New York Academy of Sciences. 597(1). 17–27. 4 indexed citations
19.
Sumii, K, Naomi Uemura, Manabu Kimura, et al.. (1989). Increased Serum Pepsinogen I and Recurrence of Duodenal Ulcer. Scandinavian Journal of Gastroenterology. 24(10). 1200–1204. 14 indexed citations
20.
Haruma, Ken, et al.. (1986). Epidemiologic studies and recent changes of peptic ulcer disease during the past 10 years: study of 2,548 cases collected during 1974 to 1983 in Hiroshima University Hospital.. PubMed. 35(3). 201–5. 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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