Nobuo Aoyama

4.1k total citations
98 papers, 3.0k citations indexed

About

Nobuo Aoyama is a scholar working on Surgery, Oncology and Gastroenterology. According to data from OpenAlex, Nobuo Aoyama has authored 98 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 50 papers in Surgery, 25 papers in Oncology and 25 papers in Gastroenterology. Recurrent topics in Nobuo Aoyama's work include Helicobacter pylori-related gastroenterology studies (38 papers), Gastroesophageal reflux and treatments (19 papers) and Gastric Cancer Management and Outcomes (18 papers). Nobuo Aoyama is often cited by papers focused on Helicobacter pylori-related gastroenterology studies (38 papers), Gastroesophageal reflux and treatments (19 papers) and Gastric Cancer Management and Outcomes (18 papers). Nobuo Aoyama collaborates with scholars based in Japan, United States and Greece. Nobuo Aoyama's co-authors include Masato Kasuga, Takao Tamura, Katsuhiko Okumura, Toshiyuki Sakaeda, Tsutomu Nakamura, Daisuke Shirasaka, Masanori Horinouchi, Yoshinori Morita, Toshiyuki Sakai and Toshiro Shirakawa and has published in prestigious journals such as Journal of Biological Chemistry, Nature Genetics and Gastroenterology.

In The Last Decade

Nobuo Aoyama

96 papers receiving 3.0k citations

Peers

Countries citing papers authored by Nobuo Aoyama

Since Specialization

Citations

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

Fields of papers citing papers by Nobuo Aoyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nobuo Aoyama

This figure shows the co-authorship network connecting the top 25 collaborators of Nobuo Aoyama. A scholar is included among the top collaborators of Nobuo Aoyama 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 Nobuo Aoyama. Nobuo Aoyama 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	Construction of an Explanatory Model for Quality of Life in Outpatients with Ulcerative Colitis 2023 ·Inflammatory Intestinal Diseases ·Miho Takahashi, (unknown), Nobuo Aoyama	1
2	Upadacitinib Induction and Maintenance Therapy Improves Abdominal Pain, Bowel Urgency, and Fatigue in Patients With Ulcerative Colitis: A Post Hoc Analysis of Phase 3 Data 2023 ·Inflammatory Bowel Diseases ·Silvio Danese, (unknown), Geert D’Haens, David T. Rubin, Nobuo Aoyama, Wen Zhou, Dapo Ilo, Xuan Yao, Yuri Sánchez González, Remo Panaccione	16
3	Clinical importance of cold polypectomy during the insertion phase in the left side of the colon and rectum: a multicenter randomized controlled trial (PRESECT study) 2019 ·Gastrointestinal Endoscopy ·Akira Teramoto, Nobuo Aoyama, (unknown), (unknown), Hirohisa Machida, S Yoshida, (unknown), Takahiro Utsumi, (unknown), (unknown), Mineo Iwatate, Santa Hattori, Mikio Fujita, Wataru Sano, Yasushi Sano	5
4	Metastatic lobular carcinoma of the breast masquerading as a primary rectal cancer 2012 ·World Journal of Surgical Oncology ·Ikuo Matsuda, Nagahide Matsubara, Nobuo Aoyama, (unknown), (unknown), (unknown), Kiyoshi Tsukamoto, Tomoki Yamano, Masafumi Noda, Hiroki Ikeuchi, Naohiro Tomita, Seiichi Hirota	24
5	VEGF T-1498C polymorphism, a predictive marker of differentiation of colorectal adenocarcinomas in Japanese 2008 ·International Journal of Medical Sciences ·Motohiro Yamamori, (unknown), Shingo Maeda, Tsutomu Nakamura, Noboru Okamura, Akiko Kuwahara, (unknown), Takao Tamura, Nobuo Aoyama, Svetlana Markova, Masato Kasuga, Katsuhiko Okumura, Toshiyuki Sakaeda	10
6	Relationship of BRAF mutation, morphology, and apoptosis in early colorectal cancer 2007 ·International Journal of Colorectal Disease ·S Yoshida, Nobunao Ikehara, Nobuo Aoyama, Daisuke Shirasaka, (unknown), Shuho Semba, (unknown), Ikuya Miki, Yoshinori Morita, Takao Tamura, Takeshi Azuma, Hiroshi Yokozaki, Masato Kasuga	5
7	Impact of Helicobacter pylori Eradication Therapy on Histologic Change in the Distal Esophagus 2006 ·Helicobacter ·Masanori Toyoda, Daisuke Shirasaka, Nobuo Aoyama, Yoshinori Watanabe, Ikuya Miki, Yoshinori Morita, Yuko Matsumoto, Toshifumi Mitani, Hideyuki Miyachi, Takao Tamura, Masato Kasuga	3
8	Effect of CYP2C19 polymorphism on the safety and efficacy of omeprazole in Japanese patients with recurrent reflux oesophagitis 2005 ·Alimentary Pharmacology & Therapeutics ·Toshifumi� Ohkusa, T Maekawa, T. Arakawa, Masanobu Nakajima, K. Fujimoto, Etsuo Hoshino, Yasushi Mitachi, (unknown), Tetsuya Mine, Yuko Kawahara, Toshihiko Nagai, Nobuo Aoyama, N. Yoshida, (unknown), (unknown), Y Konda, Hiroshi Seno, (unknown), Masakí Inoue, Nobuhiro Sato	19
9	Levofloxacin- versus metronidazole-based rescue therapy for infection in Japan 2005 ·Digestive and Liver Disease ·(unknown), Ikuya Miki, Nobuo Aoyama, Daisuke Shirasaka, Yoshiaki Watanabe, Yoshinori Morita, Masanori Toyoda, Toshifumi Mitani, Hideyuki Miyachi, Takao Tamura	55
10	MDR1, MRP1 and MRP2 genotypes and in vitro chemosensitivity in Japanese patients with colorectal adenocarcinomas. 2004 ·PubMed ·(unknown), Toshiyuki Sakaeda, Tsutomu Nakamura, Yuka Moriya, Noboru Okamura, Takao Tamura, Takako Nakahara, Nobuo Aoyama, Takashi Kamigaki, Masakazu Ohno, Yoshikazu Kuroda, Masato Kasuga, Katsuhiko Okumura	12
11	Helicobacter pylori VacA Activates the p38/Activating Transcription Factor 2-mediated Signal Pathway in AZ-521 Cells 2004 ·Journal of Biological Chemistry ·Masaaki Nakayama, Miyuki Kimura, Akihiro Wada, Kinnosuke Yahiro, (unknown), Takuro Niidome, Akihiro Fujikawa, Daisuke Shirasaka, Nobuo Aoyama, Hisao Kurazono, Masaharu Noda, Joel Moss, Toshiya Hirayama	74
12	Excessive alcohol intake enhances the development of synchronous cancerous lesion in colorectal cancer patients 2004 ·International Journal of Colorectal Disease ·(unknown), Nobuo Aoyama, Daisuke Shirasaka, Kohei Kuroda, Takao Tamura, Yoshikazu Kuroda, Masato Kasuga	7
13	Impact of clarithromycin resistance and CYP2C19 genetic polymorphism on treatment efficacy of Helicobacter pylori infection with lansoprazole- or rabeprazole-based triple therapy in Japan 2003 ·European Journal of Gastroenterology & Hepatology ·Ikuya Miki, Nobuo Aoyama, Toshiyuki Sakai, Daisuke Shirasaka, (unknown), (unknown), Kohei Kuroda, Takao Tamura, Tomoko Kita, Toshiyuki Sakaeda, Katsuhiko Okumura, Masato Kasuga	59
14	at the 44th Annual Meeting of the Japanese Smooth Muscle Society 2002 ·Koji Nakada, Nobuo Aoyama, Manabu Nakagawa, (unknown), Daisuke Shirasaka, Hiroaki Zai, Yoshihisa Urita, Yasushi Kitagawa, Shigeki Koyama, (unknown), Hiroaki Kusunoki, Mototsugu Kato, Nobuyoshi Hanyu, Ken Haruma, Michio Hongo	16
15	Variation in MT expression in early-stage depressed-type and polypoid-type colorectal tumours 2002 ·European Journal of Cancer ·Kohei Kuroda, Nobuo Aoyama, Takao Tamura, (unknown), S. Maekawa, Tetsuya Inoue, (unknown), Daisuke Shirasaka, Rieko Minami, Sakan Maeda, Y Kuroda, Masato Kasuga	5
16	Significant Genetic Linkage of MDR1 Polymorphisms at Positions 3435 and 2677: Functional Relevance to Pharmacokinetics of Digoxin 2002 ·Pharmaceutical Research ·Masanori Horinouchi, Toshiyuki Sakaeda, Tsutomu Nakamura, Yoshinori Morita, Takao Tamura, Nobuo Aoyama, Masato Kasuga, Katsuhiko Okumura	110
17	Effect of Helicobacter pylori‐Induced Cyclooxygenase‐2 on Gastric Epithelial Cell Kinetics: Implication for Gastric Carcinogenesis 2002 ·Helicobacter ·(unknown), Nobuo Aoyama, Daisuke Shirasaka, Toshiyuki Sakai, (unknown), (unknown), (unknown), Kohei Kuroda, Takashi Inoue, (unknown), Masaki Miyamoto, Masato Kasuga	29
18	MDR1 Genotype-Related Pharmacokinetics of Digoxin After Single Oral Administration in Healthy Japanese Subjects 2001 ·Pharmaceutical Research ·Toshiyuki Sakaeda, Tsutomu Nakamura, Masanori Horinouchi, Mikio Kakumoto, Nobuko Ohmoto, Toshiyuki Sakai, Yoshinori Morita, Takao Tamura, Nobuo Aoyama, Midori Hirai, Masato Kasuga, Katsuhiko Okumura	267
19	CYP2C19 Genotype Related Effect of Omeprazole on Intragastric pH and Antimicrobial Stability 2001 ·Pharmaceutical Research ·Tomoko Kita, Yusuke Tanigawara, Nobuo Aoyama, (unknown), Yukio Saijoh, Fusao Komada, Toshiyuki Sakaeda, Katsuhiko Okumura, Toshiyuki Sakai, Masato Kasuga	39
20	HLA-DRB11502 allele, subtype of DR15, is associated with susceptibility to ulcerative colitis and its progression 1995 ·Digestive Diseases and Sciences* ·(unknown), Nobuo Aoyama, (unknown), Takao Tamura, (unknown), (unknown), (unknown), Hiroyuki Okano, Masaki Miyamoto, Hiroyuki Inaba, Taeko K. Naruse, Yoshisuke Nose, Masato Kasuga	87

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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