Published Papers & Misc - OKAMOTO Ryuichi

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  1. Kazuma Saito, Masanori Kobayashi, Minato Yokoyama, Towako Taguchi, Koichiro Kimura, Takumi Akashi, Yasuhisa Fujii, Ryuichi Okamoto. Transjejunal fine-needle biopsy using a forward-viewing echoendoscope for diagnosis of a rare hereditary paraganglioma. VideoGIE. 2024.07; 9 (7): 329-332. ( PubMed, DOI )

  2. Shintaro Akiyama, Kaoru Yokoyama, Soichi Yagi, Shinichiro Shinzaki, Kozo Tsuruta, Shinichiro Yoshioka, Minako Sako, Hiromichi Shimizu, Mariko Kobayashi, Toshiyuki Sakurai, Kei Nomura, Tomoyoshi Shibuya, Masahiro Takahara, Sakiko Hiraoka, Kyohei Sugai, Shunichi Yanai, Atsushi Yoshida, Miki Koroku, Teppei Omori, Masayuki Saruta, Takayuki Matsumoto, Ryuichi Okamoto, Kiichiro Tsuchiya, Toshimitsu Fujii. Efficacy and safety of filgotinib for ulcerative colitis: A real-world multicenter retrospective study in Japan. Aliment Pharmacol Ther. 2024.06; 59 (11): 1413-1424. ( PubMed, DOI )

  3. Keito Suzuki, Yutaka Yasui, Kaoru Tsuchiya, Hiroaki Matsumoto, Yudai Yamazaki, Naoki Uchihara, Yuki Tanaka, Haruka Miyamoto, Michiko Yamada-Shimizu, Taisei Keitoku, Risa Okada, Mayu Higuchi, Kenta Takaura, Shohei Tanaka, Chiaki Maeyashiki, Nobuharu Tamaki, Hiroyuki Nakanishi, Yuka Takahashi, Yasuhiro Asahina, Ryuichi Okamoto, Masayuki Kurosaki, Namiki Izumi. Impact of immune-related adverse events in patients with hepatocellular carcinoma treated with atezolizumab plus bevacizumab. J Gastroenterol Hepatol. 2024.06; 39 (6): 1183-1189. ( PubMed, DOI )

  4. Hiromune Katsuda, Masanori Kobayashi, Ryuichi Okamoto. Endoscopic recanalization of an occluded Braun anastomosis using an endoscopic injection needle. Dig Endosc. 2024.05; Online ahead of print ( PubMed, DOI )

  5. Nobuhiko Ogasawara, Yoshihito Kano, Yosuke Yoneyama, Sakurako Kobayashi, Satoshi Watanabe, Sakura Kirino, Fausto D Velez-Bravo, Yourae Hong, Aleksandra Ostapiuk, Pavlo Lutsik, Iichiroh Onishi, Shinichi Yamauchi, Yui Hiraguri, Go Ito, Yusuke Kinugasa, Kenichi Ohashi, Mamoru Watanabe, Ryuichi Okamoto, Sabine Tejpar, Shiro Yui. Discovery of non-genomic drivers of YAP signaling modulating the cell plasticity in CRC tumor lines. iScience. 2024.03; 27 (3): 109247. ( PubMed, DOI )

  6. Tatsuya Suzuki, Yuka Hayakawa, Shun Kaneko, Kento Takenaka, Keiya Watakabe, Yuko Kinowaki, Akira Takemoto, Kazuo Ohtsuka, Yasuhiro Asahina, Ryuichi Okamoto. Granulomatous hepatitis with Crohn's disease: a case report. Clin J Gastroenterol. 2024.03; Online ahead of print ( PubMed, DOI )

  7. Shun Fujiwara, Yoshihito Kano, Yasuhiro Maejima, Tomoyuki Fujioka, Kazuhiro Tamura, Susumu Kirimura, Satoshi Miyake, Ryuichi Okamoto. Clinical Response of Primary Malignant Pericardial Mesothelioma with Peritoneal Dissemination to Nivolumab. Intern Med. 2024.02; 63 (4): 513-519. ( PubMed, DOI )

  8. Miwa Himuro, Yuka Wakabayashi, Tomomi Taguchi, Takehiro Katahira, Luka Suzuki, Hitoshi Iida, Takeshi Ogihara, Yuya Nishida, Shugo Sasaki, Francis C Lynn, Yuichi Hiraoka, Shigeru Oshima, Ryuichi Okamoto, Yoshio Fujitani, Hirotaka Watada, Takeshi Miyatsuka. Novel time-resolved reporter mouse reveals spatial and transcriptional heterogeneity during alpha cell differentiation. Diabetologia. 2024.01; 67 (1): 156-169. ( PubMed, DOI )

  9. Yuki Yonemoto, Yasuhiro Nemoto, Ryo Morikawa, Nana Shibayama, Shigeru Oshima, Takashi Nagaishi, Tomohiro Mizutani, Go Ito, Satoru Fujii, Ryuichi Okamoto. T cell subsets were increased in the small intestinal intraepithelial lymphocytes of aged mice. Front Immunol. 2024.01; 15 1340048. ( PubMed, DOI )

  10. Shun Kaneko, Yasuhiro Asahina, Miyako Murakawa, Seishin Azuma, Kento Inada, Tomohiro Mochida, Keiya Watakabe, Taro Shimizu, Jun Tsuchiya, Masato Miyoshi, Fukiko Kawai-Kitahata, Sayuri Nitta, Marie Takahashi, Tomoyuki Fujioka, Mitsuhiro Kishino, Tatsuhiko Anzai, Sei Kakinuma, Mina Nakagawa, Ryuichi Okamoto. Analysis of prognosis and background liver disease in non-advanced hepatocellular carcinoma in two decades. PLoS One. 2024; 19 (3): e0297882. ( PubMed, DOI )

  11. Masanori Kobayashi, Hiromune Katsuda, Aya Maekawa, Keiichi Akahoshi, Ryosuke Watanabe, Yuko Kinowaki, Hisaaki Nishimura, Takeo Fujiwara, Minoru Tanabe, Ryuichi Okamoto. Development of an intraductal papillary mucinous neoplasm malignancy prediction scoring system. PLoS One. 2024; 19 (10): e0312234. ( PubMed, DOI )

  12. Nanako Hashido, Masanori Kobayashi, Ami Kawamoto, Suguru Mabuchi, Hiromune Katsuda, Kazuo Ohtsuka, Yasuhiro Asahina, Masayoshi Hashimoto, Ryuichi Okamoto. Sphincter of Oddi dysfunction that could not be diagnosed with Rome IV: a case report. Clin J Gastroenterol. 2023.12; 16 (6): 913-918. ( PubMed, DOI )

  13. Shun Kaneko, Yasuhiro Asahina, Miyako Murakawa, Shunsuke Ueyama, Chiaki Maeyashiki, Hideki Watanabe, Akiko Kusano-Kitazume, Ayako Sato, Kozue Uchidate, Takehito Asakawa, Sho Watanabe, Yasuhiro Iizuka, Isamu Shibata, Shinya Oooka, Yuko Karakama, Takashi Fujii, Taro Watabe, Keiichi Akahoshi, Minoru Tanabe, Kento Inada, Tomohiro Mochida, Keiya Watakabe, Taro Shimizu, Jun Tsuchiya, Masato Miyoshi, Fukiko Kitahata-Kawai, Sayuri Nitta, Mina Nakagawa, Sei Kakinuma, Ryuichi Okamoto, . Prognostic Significance of C-Reactive Protein in Unresectable Hepatocellular Carcinoma treated with Atezolizumab and Bevacizumab. Hepatol Res. 2023.12; Online ahead of print. ( PubMed, DOI )

  14. Tharathorn Suwatthanarak, Pariyada Tanjak, Thanawat Suwatthanarak, Onchira Acharayothin, Kullanist Thanormjit, Amphun Chaiboonchoe, Thikhamporn Tawantanakorn, Chainarong Phalanusitthepha, Atthaphorn Trakarnsanga, Asada Methasate, Manop Pithukpakorn, Ryuichi Okamoto, Vitoon Chinswangwatanakul. Exploring extracellular matrix and prostaglandin pathway alterations across varying resection margin distances of right-sided colonic adenocarcinoma. BMC Cancer. 2023.12; 23 (1): 1202. ( PubMed, DOI )

  15. Ami Kawamoto, Kento Takenaka, Shuji Hibiya, Yoshio Kitazume, Hiromichi Shimizu, Toshimitsu Fujii, Eiko Saito, Kazuo Ohtsuka, Ryuichi Okamoto. Combination of leucine-rich alpha-2 glycoprotein and fecal markers detect Crohn's disease activity confirmed by balloon-assisted enteroscopy. Intest Res. 2023.11; Online ahead of print ( PubMed, DOI )

  16. Shuji Hibiya, Takashi Fujii, Toshimitsu Fujii, Shinji Suzuki, Mayumi Kondo, Shinya Ooka, Yohei Furumoto, Seishin Azuma, Kei Tanaka, Hitoshi Kurata, Shohei Tanaka, Masayuki Kurosaki, Kazuyoshi Nagayama, Fumihiko Kusano, Yasuhiro Iizuka, Takahiro Kawamura, Hidekazu Ikemiyagi, Shinya Sakita, Tsunehito Yauchi, Hideki Watanabe, Ami Kawamoto, Yusuke Matsuyama, Kazuo Ohtsuka, Ryuichi Okamoto. COVID-19 severity is associated with the risk of gastrointestinal bleeding. BMJ Open Gastroenterol. 2023.11; 10 (1): ( PubMed, DOI )

  17. Masanori Kobayashi, Hiromune Katsuda, Kazuo Ohtsuka, Ryuichi Okamoto. Comparison of guidewires for successful cannulation of biliary stenosis and targeting of biliary branches in ERCP. Endosc Int Open. 2023.09; 11 (9): E805-E810. ( PubMed, DOI )

  18. Kirino Sakura, Tamaki Nobuharu, Kurosaki Masayuki, Takahashi Yuka, Higuchi Mayu, Itakura Yoshie, Tanaka Yuki, Inada Kento, Ishido Shun, Yamashita Koji, Nobusawa Tsubasa, Matsumoto Hiroaki, Hayakawa Yuka, Kakegawa Tatsuya, Takaura Kenta, Tanaka Shohei, Maeyashiki Chiaki, Kaneko Shun, Yasui Yutaka, Tsuchiya Kaoru, Nakanishi Hiroyuki, Okamoto Ryuichi, Izumi Namiki. Detecting advanced liver fibrosis using ultrasound shear wave velocity measurement in the general population QUANTITATIVE IMAGING IN MEDICINE AND SURGERY. 2023.08; 13 (10): 6493-6502. ( PubMed, DOI )

  19. Takayuki Yamamoto, Hiroshi Nakase, Kenji Watanabe, Shinichiro Shinzaki, Noritaka Takatsu, Toshimitsu Fujii, Ryuichi Okamoto, Katsuyoshi Matsuoka, Akihiro Yamada, Reiko Kunisaki, Minoru Matsuura, Hisashi Shiga, Shigeki Bamba, Yohei Mikami, Takahiro Shimoyama, Satoshi Motoya, Takehiro Torisu, Taku Kobayashi, Naoki Ohmiya, Masayuki Saruta, Koichiro Matsuda, Takayuki Matsumoto, Atsuo Maemoto, Yoko Murata, Shinichi Yoshigoe, Shinya Nagasaka, Tsutomu Yajima, Tadakazu Hisamatsu, . Diagnosis and Clinical Features of Perianal Lesions in Newly Diagnosed Crohn's Disease: Subgroup Analysis from Inception Cohort Registry Study of Patients with Crohn's Disease (iCREST-CD). J Crohns Colitis. 2023.08; 17 (8): 1193-1206. ( PubMed, DOI )

  20. Kentaro Miyamoto, Tomohisa Sujino, Yosuke Harada, Hiroshi Ashida, Yusuke Yoshimatsu, Yuki Yonemoto, Yasuhiro Nemoto, Michio Tomura, Hassan Melhem, Jan Hendrik Niess, Toshihiko Suzuki, Toru Suzuki, Shohei Suzuki, Yuzo Koda, Ryuichi Okamoto, Yohei Mikami, Toshiaki Teratani, Kenji F. Tanaka, Akihiko Yoshimura, Toshiro Sato, Takanori Kanai. The gut microbiota-induced kynurenic acid recruits GPR35-positive macrophages to promote experimental encephalitis. Cell Rep. 2023.08; 42 (8): 113005. ( PubMed, DOI )

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