Harumasa Ohyanagi

2.1k total citations
149 papers, 1.7k citations indexed

About

Harumasa Ohyanagi is a scholar working on Surgery, Oncology and Molecular Biology. According to data from OpenAlex, Harumasa Ohyanagi has authored 149 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 60 papers in Surgery, 42 papers in Oncology and 24 papers in Molecular Biology. Recurrent topics in Harumasa Ohyanagi's work include Pancreatic and Hepatic Oncology Research (23 papers), Pancreatitis Pathology and Treatment (15 papers) and Gastrointestinal disorders and treatments (13 papers). Harumasa Ohyanagi is often cited by papers focused on Pancreatic and Hepatic Oncology Research (23 papers), Pancreatitis Pathology and Treatment (15 papers) and Gastrointestinal disorders and treatments (13 papers). Harumasa Ohyanagi collaborates with scholars based in Japan, United States and United Kingdom. Harumasa Ohyanagi's co-authors include Takao MITSUNO, Yoichi Saitoh, Yoshifumi Takeyama, Naoki Hashimoto, Motohiro Imano, Seiji Haji, Satoshi Asano, Kazumasa Yokoyama, Takashi Ueda and Daisuke Kuroda and has published in prestigious journals such as Journal of Clinical Investigation, Biochemistry and Annals of Surgery.

In The Last Decade

Harumasa Ohyanagi

136 papers receiving 1.6k citations

Peers

Countries citing papers authored by Harumasa Ohyanagi

Since Specialization

Citations

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

Fields of papers citing papers by Harumasa Ohyanagi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Harumasa Ohyanagi

This figure shows the co-authorship network connecting the top 25 collaborators of Harumasa Ohyanagi. A scholar is included among the top collaborators of Harumasa Ohyanagi 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 Harumasa Ohyanagi. Harumasa Ohyanagi 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

#	Work	Indexed citations
1	A CASE OF SUCCESSFUL CONSERVATIVE MANAGEMENT FOR RETROPERITONEAL PERFORATION OF DUODENAL DIVERTICLE 2008 ·Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) ·Hajime Ishikawa, (unknown), (unknown), Takuya Nakai, Yoshifumi Takeyama, Harumasa Ohyanagi	4
2	Diameter of main pancreatic duct is important for prediction of malignancy of IPMN 2008 ·Suizo ·(unknown), (unknown), (unknown), Seiji Haji, (unknown), (unknown), Takeo Yasuda, (unknown), (unknown), Harumasa Ohyanagi	0
3	2008 ·Nihon Gekakei Rengo Gakkaishi (Journal of Japanese College of Surgeons) ·(unknown), (unknown), (unknown), (unknown), (unknown), Hitoshi Shiozaki, Harumasa Ohyanagi	0
4	Local Existence of Osteopontin Positive Tumor-Associated Macrophages in Colorectal Cancer Stroma as Risk Factors of Postoperative Hepatic Metastasis 2007 ·The Japanese Journal of Gastroenterological Surgery ·(unknown), Motohiro Imano, Kiyotaka Okuno, Hitoshi Shiozaki, Harumasa Ohyanagi	1
5	A Case of Extended Operation for Gastric Cancer Accompanied with Gastrojejunal Fistula and Pancreas Invasion 2004 ·The Japanese Journal of Gastroenterological Surgery ·(unknown), (unknown), Harumasa Ohyanagi	2
6	A Case of Intramesosigmoid Hernia. 2001 ·The Japanese Journal of Gastroenterological Surgery ·(unknown), Hidetoshi Fujiwara, (unknown), (unknown), (unknown), (unknown), Harumasa Ohyanagi	1
7	Early carcinoma of the gallbladder in a young female resected by laparoscopic cholecystectomy 1997 ·Hidetoshi Fujiwara, Daisuke Kuroda, Motohiro Imano, Hideaki Nomura, Michio Kato, Harumasa Ohyanagi	0
8	A case of early gastric cancer after pylorus-preserving pancreatoduodenectomy 1996 ·(unknown), Hideaki Nomura, Hidetoshi Fujiwara, Daisuke Kuroda, (unknown), (unknown), (unknown), Harumasa Ohyanagi	3
9	Possible involvement of Rab11 p24, a Ras-like small GTP-binding protein, in intracellular vesicular transport of isolated pancreatic acini 1996 ·Digestive Diseases and Sciences ·Yuichi Hori, Yoshifumi Takeyama, Motoki Hiroyoshi, Takashi Ueda, Akio Maeda, Harumasa Ohyanagi, Yoichi Saitoh, Kozo Kaibuchi, Yoshimi Takai	11
10	Effects of nucleotides and nucleosides on cell growth in vitro and in vivo 1995 ·Harumasa Ohyanagi, (unknown), H Nomura, (unknown)	1
11	Summarizing Report on Sclerotherapy of 50 Cases with Varicose Vein 1995 ·Skin research ·Moriya Ohkuma, (unknown), Osamu Ishida, Katsuhisa Shindo, (unknown), Harumasa Ohyanagi, Hiroshi Oka, Hidetaka Oku, Hitoshi Shirotani, (unknown)	2
12	Immunological aspects of inflammatory bowel disease 1993 ·(unknown), Harumasa Ohyanagi, Richard P. MacDermott	1
13	A pediatric case of mesenteric cyst classified histologically as intraabdominal cystic lymphagnioma. 1993 ·The Journal of the Japanese Society of Clinical Cytology ·Takao Satou, Motohiro Imano, Akio Kubota, Harumasa Ohyanagi, (unknown), (unknown), Mitsuyo Maeda, Shigeo Hashimoto	1
14	Characterization of an Antigen Defined by Monoclonal Antibody KMO1 1990 ·Hybridoma ·(unknown), T Taniguchi, Yahiro Uemura, Kazumasa Yokoyama, (unknown), Masahiro Yamamoto, Harumasa Ohyanagi, Yoichi Saitoh	3
15	A case of middle intra-thoracic esophageal ulcer. 1990 ·The Japanese Journal of Gastroenterological Surgery ·Hiroshi Kasahara, (unknown), Michio Kato, Harumasa Ohyanagi, Yoichi Saitoh, (unknown), Kazunori Inoue, Takahiro Fujimori	0
16	Hepatic focal nodular hyperplasia found in a patient of long-term intake of oral contraceptives. 1988 ·The Japanese Journal of Gastroenterological Surgery ·(unknown), Harumasa Ohyanagi, Makoto Usami, (unknown), Yoichi Saitoh	1
17	A Monoclonal Antibody, KM10 Reactive with Human Gastrointestinal Cancer and Its Application for Immunotherapy 1988 ·Japanese Journal of Cancer Research ·Harumasa Ohyanagi, (unknown), (unknown), (unknown), Masahiro Yamamoto, (unknown), (unknown), Yasuo Ueda, (unknown)	8
18	[Epidemiological studies on pancreatic cancer]. 1985 ·PubMed ·Harumasa Ohyanagi, Shinya Okumura, Masahiro Yamamoto, T Ishida, (unknown), Hirohiko Onoyama, (unknown)	3
19	In vitro hydrolysis of dexamethasone 21-palmitate. 1985 ·Ensho ·Hiroyuki Okamoto, Masahiro Watanabe, Harumasa Ohyanagi, (unknown)	1
20	BIOCHEMICAL APPROCH TO THE OBSTRUCTIVE JAUNDICE TO INVESTIGATE THE CORRECT TIME FOR OPERATION 1975 ·The Japanese Journal of Gastroenterological Surgery ·Harumasa Ohyanagi, (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), (unknown), Takao MITSUNO	4

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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