Research theme for competitive and other funds (3):
2024 - 2027 Pathogenesis of duodenal carcinoma mediated by metabolites derived from mucosa-associated bacteria by multi-omics analysis
2021 - 2024 Elucidation of the mechanism and pathway for duodenal carcinogenesis related to dysbiosis of duodenal mucosa-related microbiota
2018 - 2023 メタゲノムおよびメタボローム解析によるピロリ除菌後胃癌診断システムの開発
Papers (473):
Elsayed Ghoneem, Osamu Dohi, Tomoko Ochiai, Naoto Iwai, Naohisa Yoshida, Kazuya Takabatake, Takeshi Kubota. Endoscopic resection with one-port placement for duodenal neuroendocrine tumor: toward more minimally invasive endoscopic management. Endoscopy. 2025. 57. S 01. E97-E98
Osamu Dohi, Mayuko Seya, Naoto Iwai, Tomoko Ochiai, Junki Yumoto, Hiroki Mukai, Katsuma Yamauchi, Reo Kobayashi, Ryohei Hirose, Ken Inoue, et al. Endoscopic detection and diagnosis of gastric cancer using image-enhanced endoscopy: A systematic review and meta-analysis. DEN open. 2025. 5. 1. e418
Naohisa Yoshida, Ryohei Hirose, Ken Inoue, Yoshikazu Inagaki, Yutaka Inada, Takayuki Motoyoshi, Ritsu Yasuda, Hikaru Hashimoto, Hiroyuki Yoriki, Toshifumi Tsuji, et al. Risk Factors, Clinical Course, and Management of Delayed Perforation After Colorectal Endoscopic Submucosal Dissection: A Large-Scale Multicenter Study. Digestive diseases and sciences. 2025
Kohei Oka, Naoto Iwai, Tomoyuki Ohara, Akiko Watanabe, Kengo Okabe, Tomoya Ohara, Hiroaki Sakai, Shinya Okishio, Mariko Kubota-Kajiwara, Toshifumi Tsuji, et al. Ischemic stroke in patients with unresectable pancreatic and gastric cancer. International journal of clinical oncology. 2025
Tomoya Ohara, Naoto Iwai, Kohei Oka, Kengo Okabe, Hiroaki Sakai, Toshifumi Tsuji, Takashi Okuda, Junichi Sakagami, Keizo Kagawa, Toshifumi Doi, et al. Clinical significance of cachexia index determined by bioelectrical impedance analysis in patients with gastrointestinal cancer. Oncology letters. 2025. 29. 3. 114-114