Ken Hara

477 total citations
27 papers, 380 citations indexed

About

Ken Hara is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ken Hara has authored 27 papers receiving a total of 380 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Surgery, 10 papers in Gastroenterology and 9 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ken Hara's work include Helicobacter pylori-related gastroenterology studies (10 papers), Gastric Cancer Management and Outcomes (7 papers) and Gastroesophageal reflux and treatments (6 papers). Ken Hara is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (10 papers), Gastric Cancer Management and Outcomes (7 papers) and Gastroesophageal reflux and treatments (6 papers). Ken Hara collaborates with scholars based in Japan, China and India. Ken Hara's co-authors include Tadayuki Oshima, Toshihiko Tomita, Hiroto Miwa, Hirokazu Fukui, Jiro Watari, Hirotsugu Eda, Yoshitaka Kitayama, Takashi Kondo, Mo Yang and Takahisa Yamasaki and has published in prestigious journals such as Gastroenterology, PLoS ONE and Scientific Reports.

In The Last Decade

Ken Hara

24 papers receiving 371 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ken Hara Japan 11 166 121 106 89 63 27 380
Anne R. Meyer United States 10 162 1.0× 249 2.1× 99 0.9× 46 0.5× 127 2.0× 11 466
Yijun Wu China 13 123 0.7× 110 0.9× 53 0.5× 43 0.5× 40 0.6× 44 391
Elzbieta A. Swietlicki United States 14 242 1.5× 148 1.2× 149 1.4× 47 0.5× 44 0.7× 22 554
Hirotsugu Eda Japan 9 149 0.9× 76 0.6× 58 0.5× 64 0.7× 26 0.4× 19 264
Archana Sareen United States 7 196 1.2× 131 1.1× 100 0.9× 17 0.2× 57 0.9× 11 395
Beatriz Gras-Miralles United States 9 145 0.9× 124 1.0× 24 0.2× 57 0.6× 70 1.1× 18 385
Jörg M. Zeeh Germany 12 152 0.9× 136 1.1× 121 1.1× 40 0.4× 36 0.6× 19 458
Hiroshi Kishikawa Japan 11 68 0.4× 241 2.0× 35 0.3× 94 1.1× 58 0.9× 46 374
A. Brent Fruin United States 9 140 0.8× 286 2.4× 122 1.2× 41 0.5× 27 0.4× 9 501
David Malka France 8 110 0.7× 188 1.6× 142 1.3× 15 0.2× 64 1.0× 21 404

Countries citing papers authored by Ken Hara

Since Specialization
Citations

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

Fields of papers citing papers by Ken Hara

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ken Hara

This figure shows the co-authorship network connecting the top 25 collaborators of Ken Hara. A scholar is included among the top collaborators of Ken Hara 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 Ken Hara. Ken Hara 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.
Okugawa, Takuya, Tadayuki Oshima, Hirotsugu Eda, et al.. (2021). Effect of Instruction on Preventing Delayed Bleeding after Colorectal Polypectomy and Endoscopic Mucosal Resection. Journal of Clinical Medicine. 10(5). 928–928. 3 indexed citations
2.
3.
Oshima, Tadayuki, Akio Tamura, Ken Hara, et al.. (2021). Gastric Xanthoma Is Related to the Rapid Growth of Gastric Cancer. Journal of Clinical Medicine. 10(23). 5704–5704. 4 indexed citations
4.
Tozawa, Katsuyuki, Ikuo Matsuda, Kumiko Nakamura, et al.. (2020). A Case of Severe Acute Gastritis as an Immune-Related Adverse Event After Nivolumab Treatment: Endoscopic and Pathological Findings in Nivolumab-Related Gastritis. Digestive Diseases and Sciences. 66(7). 2461–2465. 9 indexed citations
5.
Nakagawa, Kenichiro, Ken Hara, Asma Fikree, et al.. (2019). Patients with dyspepsia have impaired mucosal integrity both in the duodenum and jejunum: in vivo assessment of small bowel mucosal integrity using baseline impedance. Journal of Gastroenterology. 55(3). 273–280. 17 indexed citations
6.
Yamasaki, Takahisa, Toshihiko Tomita, Akio Tamura, et al.. (2018). Esophagography in Patients With Esophageal Achalasia Diagnosed With High-resolution Esophageal Manometry. Journal of Neurogastroenterology and Motility. 24(3). 403–409. 10 indexed citations
7.
Yang, Mo, Hirokazu Fukui, Hirotsugu Eda, et al.. (2017). Involvement of gut microbiota in the association between gastrointestinal motility and 5-HT expression/M2 macrophage abundance in the gastrointestinal tract. Molecular Medicine Reports. 16(3). 3482–3488. 34 indexed citations
8.
Eda, Hirotsugu, Hirokazu Fukui, Ryosuke Uchiyama, et al.. (2017). Effect of Helicobacter pylori infection on the link between GLP-1 expression and motility of the gastrointestinal tract. PLoS ONE. 12(5). e0177232–e0177232. 9 indexed citations
9.
Yang, Mo, Hirokazu Fukui, Hirotsugu Eda, et al.. (2017). Involvement of gut microbiota in association between GLP-1/GLP-1 receptor expression and gastrointestinal motility. American Journal of Physiology-Gastrointestinal and Liver Physiology. 312(4). G367–G373. 45 indexed citations
10.
11.
Watari, Jiro, Shigemitsu Ueyama, Toshihiko Tomita, et al.. (2016). What types of early gastric cancer are indicated for endoscopic ultrasonography staging of invasion depth?. World Journal of Gastrointestinal Endoscopy. 8(16). 558–558. 17 indexed citations
12.
Kitayama, Yoshitaka, Hirokazu Fukui, Ken Hara, et al.. (2016). Role of regenerating gene I in claudin expression and barrier function in the small intestine. Translational research. 173. 92–100. 17 indexed citations
13.
Yamasaki, Takahisa, Hirokazu Fukui, Ken Hara, et al.. (2016). Efficacy of Intrathecal MTX/Ara-C Combined with Systemic Chemotherapy in a Gastric Cancer Patient with Meningeal Carcinomatosis. Internal Medicine. 55(6). 609–611. 3 indexed citations
14.
Hara, Ken, Hirokazu Fukui, Chao Sun, et al.. (2015). Effect of REG Iα protein on angiogenesis in gastric cancer tissues. Oncology Reports. 33(5). 2183–2189. 16 indexed citations
15.
Sun, Chao, Hirokazu Fukui, Ken Hara, et al.. (2015). FGF9 from cancer-associated fibroblasts is a possible mediator of invasion and anti-apoptosis of gastric cancer cells. BMC Cancer. 15(1). 333–333. 55 indexed citations
16.
Yoshida, Hideki, et al.. (2015). Simultaneous execution of hot pack and muscle stretching enables stronger muscle stretching due to the reduction of stretch pain. Physiotherapy. 101. e1700–e1700. 1 indexed citations
17.
Fukui, Hirokazu, Changyu Sun, Ken Hara, et al.. (2014). IL-22 produced by cancer-associated fibroblasts promotes gastric cancer cell invasion via STAT3 and ERK signaling. British Journal of Cancer. 111(4). 763–771. 79 indexed citations
18.
Maruyama, Tsunehiko, et al.. (2006). [A case of primary cancer of the small intestine].. PubMed. 103(3). 290–4. 1 indexed citations
19.
Makiyama, Kazuya, et al.. (1994). [Experimental colitis induced by dextran sulfate].. PubMed. Suppl 6(6). 29–31. 3 indexed citations
20.
Sakuma, Mariko, et al.. (1993). A Case of Drug Eruption due to Mexiletine Associated with Severe Liver Damage.. The Nishinihon Journal of Dermatology. 55(4). 674–679. 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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