Hirokazu Yamagami

6.3k citations

198 papers · 4.0k · h-index 37

Impact in

Gastroenterology top 0.2%
- Gastrointestinal motility and disorders
- Gastroesophageal reflux and treatments
- Gastrointestinal Bleeding Diagnosis and Treatment
Surgery top 1%
- Helicobacter pylori-related gastroenterology studies
- Esophageal Cancer Research and Treatment
- Eosinophilic Esophagitis

Papers in

Surgery 78
- Helicobacter pylori-related gastroenterology studies 26
- Eosinophilic Esophagitis 21
Gastroenterology 61
- Gastroesophageal reflux and treatments 21
- Gastrointestinal Bleeding Diagnosis and Treatment 19
- Gastrointestinal Tumor Research and Treatment 14
- Gastrointestinal motility and disorders 13

Co-authors: Toshio Watanabe (162 shared papers)Yasuhiro Fujiwara (146 shared papers)Tetsuya Tanigawa (154 shared papers)Tetsuo Arakawa (133 shared papers)Kazunari Tominaga (128 shared papers)Kenji Watanabe (100 shared papers)Masatsugu Shiba (91 shared papers)Noriko Kamata (86 shared papers)
Journals: Gastrointestinal Endoscopy (23 papers)Gastroenterology (17 papers)Digestion (15 papers)PLoS ONE (11 papers)Scandinavian Journal of Gastroenterology (9 papers)
Partner nations: Japan Philippines Thailand

In The Last Decade

Hirokazu Yamagami

191 papers receiving 3.9k citations

Peers

Countries citing papers authored by Hirokazu Yamagami

Since Specialization

Citations

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

Fields of papers citing papers by Hirokazu Yamagami

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside Hirokazu Yamagami, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Hirokazu Yamagami Line = papers co-authored together Hirokazu Yamagami links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 198 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Prevalence of overlaps between GERD, FD and IBS and impact on health‐related quality of life Journal of Gastroenterology and Hepatology ·Makiko Kaji, Yasuhiro Fujiwara, Masatsugu Shiba, Yukie Kohata, Hirokazu Yamagami, Tetsuya Tanigawa, Kenji Watanabe, Toshio Watanabe, Kazunari Tominaga, Tetsuo Arakawa	2010	192
2	Probiotic Lactobacillus casei strain Shirota prevents indomethacin-induced small intestinal injury: involvement of lactic acid American Journal of Physiology-Gastrointestinal and Liver Physiology ·Toshio Watanabe, Hikaru Nishio, Tetsuya Tanigawa, Hirokazu Yamagami, Hirotoshi Okazaki, Kenji Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, Nobuhide Oshitani, Takashi Asahara, Koji Nomoto, Kazuhide Higuchi, Koji Takeuchi, Tetsuo Arakawa	2009	127
3	Usefulness of Non-Magnifying Narrow-Band Imaging in Screening of Early Esophageal Squamous Cell Carcinoma: A Prospective Comparative Study Using Propensity Score Matching The American Journal of Gastroenterology ·Yasuaki Nagami, Kazunari Tominaga, Hirohisa Machida, Masami Nakatani, Natsuhiko Kameda, Satoshi Sugimori, Hirotoshi Okazaki, Tetsuya Tanigawa, Hirokazu Yamagami, Naoshi Kubo, Masatsugu Shiba, Kenji Watanabe, Toshio Watanabe, Hiroyoshi Iguchi, Yasuhiro Fujiwara, Masaichi Ohira, Kosei Hirakawa, Tetsuo Arakawa	2014	99
4	Evaluation of Deep Small Bowel Involvement by Double-Balloon Enteroscopy in Crohn's Disease The American Journal of Gastroenterology ·Nobuhide Oshitani, Tomonori Yukawa, Hirokazu Yamagami, Makoto Inagawa, Noriko Kamata, Kenji Watanabe, Yoshio Jinno, Yasuhiro Fujiwara, Kazuhide Higuchi, Tetsuo Arakawa	2006	97
5	A prospective, single-blind trial comparing wireless capsule endoscopy and double-balloon enteroscopy in patients with obscure gastrointestinal bleeding Journal of Gastroenterology ·Natsuhiko Kameda, Kazuhide Higuchi, Masatsugu Shiba, Hirohisa Machida, Hirotoshi Okazaki, Hirokazu Yamagami, Tetsuya Tanigawa, Kenji Watanabe, Toshio Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, Nobuhide Oshitani, Tetsuo Arakawa	2008	92
6	Trehalose 6,6′-Dimycolate (Cord Factor) ofMycobacterium tuberculosisInduces Foreign-Body- and Hypersensitivity-Type Granulomas in Mice Infection and Immunity ·Hirokazu Yamagami, Takayuki Matsumoto, Nagatoshi Fujiwara, Tetsuo Arakawa, Kenji Kaneda, Ikuya Yano, Kazuo Kobayashi	2001	90
7	NLRP3 inflammasome has a protective effect against oxazolone-induced colitis: a possible role in ulcerative colitis Scientific Reports ·Shigehiro Itani, Toshio Watanabe, Yuji Nadatani, Naoki Sugimura, Sunao Shimada, Shogo Takeda, Koji Otani, Shuhei Hosomi, Yasuaki Nagami, Fumio Tanaka, Noriko Kamata, Hirokazu Yamagami, Tetsuya Tanigawa, Masatsugu Shiba, Kazunari Tominaga, Yasuhiro Fujiwara, Tetsuo Arakawa	2016	81
8	Microbiota Plays a Key Role in Non-Steroidal Anti-Inflammatory Drug-Induced Small Intestinal Damage Digestion ·Koji Otani, Tetsuya Tanigawa, Toshio Watanabe, Sunao Shimada, Yuji Nadatani, Yasuaki Nagami, Fumio Tanaka, Noriko Kamata, Hirokazu Yamagami, Masatsugu Shiba, Kazunari Tominaga, Yasuhiro Fujiwara, Tetsuo Arakawa	2017	75
9	Long-term prognosis of expanded-indication differentiated-type early gastric cancer treated with endoscopic submucosal dissection or surgery using propensity score analysis Gastrointestinal Endoscopy ·Shusei Fukunaga, Yasuaki Nagami, Masatsugu Shiba, Masaki Ominami, Tetsuya Tanigawa, Hirokazu Yamagami, Hiroaki Tanaka, Kazuya Muguruma, Toshio Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, Masaichi Ohira, Kosei Hirakawa, Tetsuo Arakawa	2016	72
10	The Traditional Japanese Medicine Rikkunshito Promotes Gastric Emptying via the Antagonistic Action of the 5‐HT₃ Receptor Pathway in Rats Evidence-based Complementary and Alternative Medicine ·Kazunari Tominaga, Toshitaka Kido, Masahiro Ochi, Chiharu Sadakane, Akihito Mase, Hirokazu Okazaki, Hirokazu Yamagami, Tetsuya Tanigawa, K. Watanabe, Toshio Watanabe, Yasuhiro Fujiwara, Nobuhide Oshitani, T. Arakawa	2009	71
11	Risk factors for severe nonsteroidal anti-inflammatory drug-induced small intestinal damage Digestive and Liver Disease ·Toshio Watanabe, Tetsuya Tanigawa, Yuji Nadatani, Yasuaki Nagami, Satoshi Sugimori, Hirotoshi Okazaki, Hirokazu Yamagami, Kenji Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, Tatsuya Koike, Tetsuo Arakawa	2013	66
12	High Mobility Group Box 1 Promotes Small Intestinal Damage Induced by Nonsteroidal Anti-Inflammatory Drugs through Toll-Like Receptor 4 American Journal Of Pathology ·Yuji Nadatani, Toshio Watanabe, Tetsuya Tanigawa, Hirohisa Machida, Hirotoshi Okazaki, Hirokazu Yamagami, Kenji Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, Tetsuo Arakawa	2012	64
13	Cigarette Smoking and its Association with Overlapping Gastroesophageal Reflux Disease, Functional Dyspepsia, or Irritable Bowel Syndrome Internal Medicine ·Yasuhiro Fujiwara, Makiko Kubo, Yukie Kohata, Hirohisa Machida, Hirotoshi Okazaki, Hirokazu Yamagami, Tetsuya Tanigawa, Kenji Watanabe, Toshio Watanabe, Kazunari Tominaga, Tetsuo Arakawa	2011	64
14	Infliximab and/or immunomodulators inhibit immune responses to trivalent influenza vaccination in adults with inflammatory bowel disease Journal of Crohn s and Colitis ·Yoshie Hagihara, Satoko Ohfuji, Kenji Watanabe, Hirokazu Yamagami, Wakaba Fukushima, Kazuhiro Maeda, Noriko Kamata, Mitsue Sogawa, Masatsugu Shiba, Tetsuya Tanigawa, Kazunari Tominaga, Toshio Watanabe, Yasuhiro Fujiwara, Yoshio Hirota, Tetsuo Arakawa	2013	56
15	Toll-like receptor 9 signaling has anti-inflammatory effects on the early phase of Helicobacter pylori-induced gastritis Biochemical and Biophysical Research Communications ·Koji Otani, Tetsuya Tanigawa, Toshio Watanabe, Yuji Nadatani, (unknown), Hirokazu Yamagami, Masatsugu Shiba, Kenji Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara, (unknown)	2012	56
16	Neutrophil-to-Lymphocyte Ratio for Predicting Loss of Response to Infliximab in Ulcerative Colitis PLoS ONE ·Yu Nishida, Shuhei Hosomi, Hirokazu Yamagami, Tomomi Yukawa, Koji Otani, Yasuaki Nagami, Fumio Tanaka, Koichi Taira, Noriko Kamata, Tetsuya Tanigawa, Masatsugu Shiba, Kenji Watanabe, Toshio Watanabe, Kazunari Tominaga, Yasuhiro Fujiwara	2017	56
17	Colchicine prevents NSAID-induced small intestinal injury by inhibiting activation of the NLRP3 inflammasome Scientific Reports ·Koji Otani, Toshio Watanabe, Sunao Shimada, Shogo Takeda, Shigehiro Itani, Akihiro Higashimori, Yuji Nadatani, Yasuaki Nagami, Fumio Tanaka, Noriko Kamata, Hirokazu Yamagami, Tetsuya Tanigawa, Masatsugu Shiba, Kazunari Tominaga, Yasuhiro Fujiwara, Tetsuo Arakawa	2016	51
18	Mechanisms of NLRP3 inflammasome activation and its role in NSAID-induced enteropathy Mucosal Immunology ·Akihiro Higashimori, Toshio Watanabe, Yuji Nadatani, Shogo Takeda, Koji Otani, Tetsuya Tanigawa, Hirokazu Yamagami, Masatsugu Shiba, Kazunari Tominaga, Yasuhiro Fujiwara, T. Arakawa	2015	49
19	Association between dietary iron and zinc intake and development of ulcerative colitis: A case–control study in Japan Journal of Gastroenterology and Hepatology ·Y. Kobayashi, Satoko Ohfuji, Kyoko Kondo, Wakaba Fukushima, Satoshi Sasaki, Noriko Kamata, Hirokazu Yamagami, Yasuhiro Fujiwara, Yasuo Suzuki, Yoshio Hirota, (unknown)	2019	48
20	Increased numbers of immature plasma cells in peripheral blood specifically overexpress chemokine receptor CXCR3 and CXCR4 in patients with ulcerative colitis Clinical & Experimental Immunology ·Shuhei Hosomi, Nobuhide Oshitani, Noriko Kamata, M. Sogawa, H. Okazaki, Tetsuya Tanigawa, Hirokazu Yamagami, Kenji Watanabe, Kazunari Tominaga, Toshio Watanabe, Yasuhiro Fujiwara, Kiyoshi Maeda, Kosei Hirakawa, T. Arakawa	2010	48

About Hirokazu Yamagami

Hirokazu Yamagami is a scholar working on Surgery, Gastroenterology, Pulmonary and Respiratory Medicine, Genetics and Epidemiology, having authored 198 papers that have together received 4.0k indexed citations. Recurring topics across this work include Helicobacter pylori-related gastroenterology studies (26 papers), Inflammatory Bowel Disease (24 papers), Gastric Cancer Management and Outcomes (22 papers), Eosinophilic Esophagitis (21 papers), Gastroesophageal reflux and treatments (21 papers), Gastrointestinal Bleeding Diagnosis and Treatment (19 papers), Gastrointestinal Tumor Research and Treatment (14 papers) and Gastrointestinal motility and disorders (13 papers). The work is most often cited by research in Gastroenterology (1.1k citations), Surgery (1.5k citations), Immunology (431 citations), Pulmonary and Respiratory Medicine (517 citations) and Genetics (440 citations). Hirokazu Yamagami has collaborated with scholars based in Japan, Philippines and Thailand. Frequent co-authors include Toshio Watanabe, Yasuhiro Fujiwara, Tetsuya Tanigawa, Tetsuo Arakawa, Kazunari Tominaga, Kenji Watanabe, Masatsugu Shiba, Noriko Kamata, Yasuaki Nagami and Hirotoshi Okazaki. Their work appears in journals such as Gastrointestinal Endoscopy, Gastroenterology, Digestion, PLoS ONE and Scandinavian Journal of Gastroenterology.

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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Hirokazu Yamagami

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All Works

About Hirokazu Yamagami

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