Hajime Otsu

718 total citations
38 papers, 502 citations indexed

About

Hajime Otsu is a scholar working on Surgery, Oncology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hajime Otsu has authored 38 papers receiving a total of 502 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Surgery, 15 papers in Oncology and 12 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hajime Otsu's work include Esophageal Cancer Research and Treatment (6 papers), Gastric Cancer Management and Outcomes (6 papers) and Esophageal and GI Pathology (6 papers). Hajime Otsu is often cited by papers focused on Esophageal Cancer Research and Treatment (6 papers), Gastric Cancer Management and Outcomes (6 papers) and Esophageal and GI Pathology (6 papers). Hajime Otsu collaborates with scholars based in Japan and United States. Hajime Otsu's co-authors include Eiji Oki, Yoshihiko Maehara, Koji Ando, Masaru Morita, Hiroyuki Kawano, Hiroshi Saeki, Yasushi Iwasaki, Yasuo Tsuda, Hiroyuki Kitao and Hiroshi Saeki and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Clinical Oncology and Scientific Reports.

In The Last Decade

Hajime Otsu

30 papers receiving 494 citations

Peers

Hajime Otsu

SURGE

PRM

ONCOL

Da-zhi Xu China

Takashi Mishima Japan

Kazufumi Sakurama Japan

Dörthe Jechorek Germany

Kuntang Shen China

Jae Kyoon Joo South Korea

Yen-Hwa Chang Taiwan

Zhili Yang China

P.V. Newcomb United Kingdom

Da-zhi Xu China

Hajime Otsu

163 ×0.6

SURGE

293 ×1.2

PRM

154 ×1.0

175 ×1.2

ONCOL

76 ×1.0

Citations per year, relative to Hajime Otsu Hajime Otsu (= 1×) peers Da-zhi Xu

Countries citing papers authored by Hajime Otsu

Since Specialization

Citations

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

Fields of papers citing papers by Hajime Otsu

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hajime Otsu

This figure shows the co-authorship network connecting the top 25 collaborators of Hajime Otsu. A scholar is included among the top collaborators of Hajime Otsu 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 Hajime Otsu. Hajime Otsu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Otsu, Hajime, Satoshi Higuchi, Kosuke Hirose, et al.. (2025). Clinical and Biological Significance of Sodium Channel Modifier 1 as a Component of the Minor Spliceosome in Hepatocellular Carcinoma. Annals of Surgical Oncology. 32(6). 4508–4519.

Otsu, Hajime, Satoshi Higuchi, Satoshi Shibuta, et al.. (2025). VPS45 promotes the progression of hepatocellular carcinoma by recycling β1 integrin to the cell membrane via the endocytic pathway. Journal of Gastroenterology. 60(9). 1157–1173.

Hirose, Kosuke, Kazuhito Minami, Daisuke Taniguchi, et al.. (2025). Laparoscopically resected appendiceal dual tumor composed of goblet cell carcinoma and low-grade mucinous neoplasm: a case report and literature review. International Cancer Conference Journal. 14(2). 136–142.

Higuchi, Satoshi, Hajime Otsu, Takaaki Masuda, et al.. (2025). SEC61G promotes colorectal cancer progression by regulating cytosolic Ca2+ concentration. Journal of Gastroenterology. 60(9). 1091–1107.

Otsu, Hajime, Takaaki Masuda, Hiroshi Saeki, et al.. (2025). Cytotoxic Anti-tumor Drugs and Tumor-Associated Macrophages Synergistically Surge PD-L1 Expression in Esophageal Squamous Cell Carcinoma. Annals of Surgical Oncology. 32(10). 7860–7873.

Tili, Esmerina, Hajime Otsu, Alexey Palamarchuk, et al.. (2024). MiR-155 -targeted IcosL controls tumor rejection. Proceedings of the National Academy of Sciences. 121(29). e2408649121–e2408649121. 2 indexed citations

Masuda, Takaaki, Dai Shimizu, Qingjiang Hu, et al.. (2024). Circulating Pre-microRNA-488 in Blood Is a Potential Prognostic Biomarker in Gastric Cancer. Anticancer Research. 45(1). 123–133.

Nakamura, Hiroki, et al.. (2023). Hot spring bathing practices have a positive effect on mental health in Japan. Heliyon. 9(9). e19631–e19631. 5 indexed citations

Suyama, Koichi, Hiroo Katsuya, Naoki Izawa, et al.. (2022). A phase II multicenter trial assessing the efficacy and safety of first-line S-1 + ramucirumab in elderly patients with advanced/recurrent gastric cancer: KSCC1701. European Journal of Cancer. 166. 279–286. 4 indexed citations

10.

Hu, Qingjiang, Takaaki Masuda, Kuniaki Sato, et al.. (2021). Oxysterol binding protein-like 3 (OSBPL3) is a novel driver gene that promotes tumor growth in part through R-Ras/Akt signaling in gastric cancer. Scientific Reports. 11(1). 19178–19178. 16 indexed citations

11.

Masuda, Takaaki, Hiroki Ueo, Yuichiro Kai, et al.. (2020). N-Cadherin mRNA Levels in Peripheral Blood Could Be a Potential Indicator of New Metastases in Breast Cancer: A Pilot Study. International Journal of Molecular Sciences. 21(2). 511–511. 9 indexed citations

12.

Tanaka, Hidetomo, Yasuko Toyoshima, Shinobu Kawakatsu, et al.. (2019). Morphological characterisation of glial and neuronal tau pathology in globular glial tauopathy (Types II and III). Neuropathology and Applied Neurobiology. 46(4). 344–358. 10 indexed citations

13.

Shimizu, Dai, Takaaki Masuda, Kuniaki Sato, et al.. (2018). CRMP5-associated GTPase (CRAG) Is a Candidate Driver Gene for Colorectal Cancer Carcinogenesis. Anticancer Research. 39(1). 99–106. 9 indexed citations

14.

Hisamatsu, Yuichi, Eiji Oki, Hajime Otsu, et al.. (2016). Effect of EGFR and p-AKT Overexpression on Chromosomal Instability in Gastric Cancer. Annals of Surgical Oncology. 23(6). 1986–1992. 13 indexed citations

15.

Otsu, Hajime, Eiji Oki, Hiroyuki Kawano, et al.. (2015). Correlation of HER2 expression with clinicopathological characteristics and prognosis in resectable gastric cancer.. PubMed. 35(4). 2441–6. 20 indexed citations

16.

Kawano, Hiroyuki, Hiroshi Saeki, Hiroyuki Kitao, et al.. (2014). Chromosomal Instability Associated with Global DNA Hypomethylation is Associated with the Initiation and Progression of Esophageal Squamous Cell Carcinoma. Annals of Surgical Oncology. 21(S4). 696–702. 64 indexed citations

17.

Hiyoshi, Yukiharu, Masaru Morita, Hiroyuki Kawano, et al.. (2014). Clinical Significance of Surgical Resection for the Recurrence of Esophageal Cancer After Radical Esophagectomy. Annals of Surgical Oncology. 22(1). 240–246. 31 indexed citations

18.

Morita, Masaru, Hiroyuki Kawano, Hajime Otsu, et al.. (2013). Surgical Resection for Esophageal Cancer Synchronously or Metachronously Associated with Head and Neck Cancer. Annals of Surgical Oncology. 20(7). 2434–2439. 17 indexed citations

19.

Saeki, Hiroshi, Masaru Morita, Yasuo Tsuda, et al.. (2013). Multimodal Treatment Strategy for Clinical T3 Thoracic Esophageal Cancer. Annals of Surgical Oncology. 20(13). 4267–4273. 19 indexed citations

20.

Saeki, Hiroshi, Yasunori Emi, Ryuichi Kumashiro, et al.. (2013). Impact of second-line and later cetuximab-containing therapy and KRAS genotypes in patients with metastatic colorectal cancer: a multicenter study in Japan. Surgery Today. 44(8). 1457–1464. 5 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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