O. Handa
11 Papers
3 Citations
O. Handa is an academic researcher. The author has contributed to research in topics: Medicine & Internal medicine. The author has an hindex of 1, co-authored 4 publications.
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Papers
Reduced abundance of butyric acid-producing bacteria in the ileal mucosa-associated microbiota of ulcerative colitis patients
Motoyasu Osawa,O. Handa,Shinya Fukushima,Hiroshi Mitsumoto,Eiji Umegaki,Ryo Inoue,Yuji Naito,Akiko Shiotani +7 more
TL;DR: The mucosa-associated microbiota (MAM) in patients with ulcerative colitis and its difference related with disease activity and classification was investigated in this article , where brush samples were collected from the terminal ileum and sigmoid colon during endoscopic procedures.
DOP24 Japan prospective multicenter study for optimization of COVID-19 vaccinations based on the immune response and safety profile in Inflammatory Bowel Disease patients: Interim analyses of the J-COMBAT trial
K. Watanabe,Tadanori Hisamatsu,Hiroshi Nakase,Kazuko Nagase,Minoru Matsuura,N. Aoyama,T. Kobayashi,Hirotake Sakuraba,Katsumi Yokoyama,Masakazu Nishishita,Masami Esaki,Fumihito Hirai,Masakazu Nagahori,Sohachi Nanjo,Teppei Omori,Satoshi Tanida,Yoshihiro Yokoyama,Kuniko Moriya,Atsuo Maemoto,O. Handa,N Ohmiya,Shinichiro Shinzaki,Sari Kato,H. Tanaka,T Uraoka,Noritaka Takatsu,H. Suzuki,Kan Takahashi,Junji Umeno,Yoshiyuki Mishima,K. Tsuchida,Mikihiro Fujiya,Sakiko Hiraoka,S. Yamamoto,Masayuki Saruta,Masanori Nojima,Akira Andoh +36 more
TL;DR: Investigation of the immune responses and safety in fully vaccinated Japanese patients with IBD found that GMTs were significantly influenced by increasing age and allergy, and tended to be influenced by COVID-19 infection.
Trajectory analyses to identify persistently low responders to COVID-19 vaccination in patients with inflammatory bowel disease: a prospective multicentre controlled study, J-COMBAT
Kenji Watanabe,Masanori Nojima,Hiroshi Nakase,Toshiyuki Sato,Minoru Matsuura,Nobuo Aoyama,Taku Kobayashi,Hirotake Sakuraba,Masakazu Nishishita,Kaoru Yokoyama,Motohiro Esaki,Fumihito Hirai,Masakazu Nagahori,Sohachi Nanjo,Teppei Omori,Satoshi Tanida,Yoshihiro Yokoyama,Kei Moriya,Atsuo Maemoto,O. Handa,Naoki Ohmiya,Kiichiro Tsuchiya,Shinichiro Shinzaki,Shingo Kato,Toshio Uraoka,Hiroki Tanaka,Noritaka Takatsu,Atsushi Nishida,Junji Umeno,Masanori Nakamura,Yoshiyuki Mishima,Mikihiro Fujiya,Kenji Tsuchida,Sakiko Hiraoka,M. Okabe,Takahiko Toyonaga,Katsuyoshi Matsuoka,Akira Andoh,Yoshio Hirota,Tadakazu Hisamatsu +39 more
TL;DR: Most IBD patients showed a sufficient immune response to COVID-19 vaccination regardless of clinical factors, and assessment of changes over time is essential to optimize COVID-19 vaccination, especially in persistently low responders.
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Questionnaire Survey on the Diagnosis and Treatments of Eosinophilic Gastrointestinal Diseases (EGID) in Asia.
Yoshikazu Tsuzuki,Akiko Shiotani,Kazuya Miyaguchi,Shouko Ono,Yutaka Saito,Mitsushige Sugimoto,Yuji Naito,Sachiyo Nomura,O. Handa,Tadakazu Hisamatsu,Mitsuhiro Fujishiro,Takahisa Matsuda,Yoshinori Morita,Naohisa Yahagi,F. K. Chan,T. Ang,M. C. Tablante,Varayu Prachayakul,Hwoon-Yong Jung,Hisashi Matsumoto,Rie Shiomi,Hiroyuki Imaeda +21 more
Safety and efficacy of capsule endoscopy for patients with newly diagnosed Crohn’s disease: A multicenter retrospective study
Seiji Kawano,Shiro Oka,Akiko Shiotani,Shinichi Hashimoto,Sakuma Takahashi,O. Handa,Taro Takami,Tomoki Inaba,Hiroyuki Okada,Shinji Tanaka +9 more
TL;DR: In this paper , the authors investigated the safety and efficacy of Capsule Endoscopy (CE) in patients with newly diagnosed Crohn's disease and evaluated the CE findings, especially in the upper small bowel of young patients.