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Makoto Okamoto

Research Profile

Procedures

Disorders

Concepts & Ideas

Living Beings

Helicobacter pylori

Geographic Areas

Japan

Chemicals & Drugs

Devices

Colonoscopes

Co-author Network

Publications

TOP 3
Atsuo Yamada; Hirotsugu Watabe; Shuntaro Obi; Takafumi Sugimoto; Shintaro Kondo; Miki Ohta; Goichi Togo; Keiji Ogura; Yutaka Yamaji; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Kazuhiko Koike; Masao Omata
Surveillance of small intestinal abnormalities in patients with hepatocellular carcinoma: a prospective capsule endoscopy study.
Takafumi Sugimoto; Miki Ohta; Tsuneo Ikenoue; Atsuo Yamada; Motohisa Tada; Mitsuhiro Fujishiro; Keiji Ogura; Yutaka Yamaji; Makoto Okamoto; Fumihiko Kanai; Takao Kawabe; Masao Omata
Macroscopic morphologic subtypes of laterally spreading colorectal tumors showing distinct molecular alterations.
Yutaka Yamaji; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Ryoichi Wada; Toru Mitsushima; Masao Omata
Cholelithiasis is a risk factor for colorectal adenoma.

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All Publications

2011: Atsuo Yamada; Hirotsugu Watabe; Shuntaro Obi; Takafumi Sugimoto; Shintaro Kondo; Miki Ohta; Goichi Togo; Keiji Ogura; Yutaka Yamaji; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Kazuhiko Koike; Masao Omata
Surveillance of small intestinal abnormalities in patients with hepatocellular carcinoma: a prospective capsule endoscopy study.
Digestive endoscopy : official journal of the Japan Gastroenterological Endoscopy Society 2011;23(2):124-9.
2010: Takafumi Sugimoto; Miki Ohta; Tsuneo Ikenoue; Atsuo Yamada; Motohisa Tada; Mitsuhiro Fujishiro; Keiji Ogura; Yutaka Yamaji; Makoto Okamoto; Fumihiko Kanai; Takao Kawabe; Masao Omata
Macroscopic morphologic subtypes of laterally spreading colorectal tumors showing distinct molecular alterations.
International journal of cancer. Journal international du cancer 2010;127(7):1562-9.
2008: Yutaka Yamaji; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Ryoichi Wada; Toru Mitsushima; Masao Omata
Cholelithiasis is a risk factor for colorectal adenoma.
The American journal of gastroenterology 2008;103(11):2847-52.
2008: Yutaka Yamaji; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Ryoichi Wada; Toru Mitsushima; Masao Omata
The effect of body weight reduction on the incidence of colorectal adenoma.
The American journal of gastroenterology 2008;103(8):2061-7.
2008: Keiji Ogura; Yoshihiro Hirata; Ayako Yanai; Wataru Shibata; Tomoya Ohmae; Yuzo Mitsuno; Shin Maeda; Hirotsugu Watabe; Yutaka Yamaji; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Masao Omata
The effect of Helicobacter pylori eradication on reducing the incidence of gastric cancer.
Journal of clinical gastroenterology 2008;42(3):279-83.
2008: Atsuo Yamada; Takafumi Sugimoto; Shintaro Kondo; Miki Ohta; Hirotsugu Watabe; Shin Maeda; Goichi Togo; Yutaka Yamaji; Keiji Ogura; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Tateo Kawase; Masao Omata
Assessment of the risk factors for colonic diverticular hemorrhage.
Diseases of the colon and rectum 2008;51(1):116-20.
2007: Yutaka Yamaji; Toru Mitsushima; Haruhiko Yoshida; Hirotsugu Watabe; Makoto Okamoto; Hitoshi Ikuma; Ryoichi Wada; Takao Kawabe; Masao Omata
Right-side shift of metachronous colorectal adenomas after polypectomy.
Scandinavian journal of gastroenterology 2007;42(12):1466-72.
2007: Makoto Okamoto; Yutaka Yamaji; Goichi Togo; Takao Kawabe; Masao Omata
[Significance of the screening test for colon neoplasms].
Nihon Naika Gakkai zasshi. The Journal of the Japanese Society of Internal Medicine 2007;96(2):239-44.
2007: Shintaro Kondo; Yutaka Yamaji; Hirotsugu Watabe; Atsuo Yamada; Takafumi Sugimoto; Miki Ohta; Keiji Ogura; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Masao Omata
A randomized controlled trial evaluating the usefulness of a transparent hood attached to the tip of the colonoscope.
The American journal of gastroenterology 2007;102(1):75-81.
2006: Yutaka Yamaji; Toru Mitsushima; Haruhiko Yoshida; Hirotsugu Watabe; Makoto Okamoto; Ryoichi Wada; Hitoshi Ikuma; Takao Kawabe; Masao Omata
The malignant potential of freshly developed colorectal polyps according to age.
Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2006;15(12):2418-21.
2006: Keisuke Tateishi; Miki Ohta; Fumihiko Kanai; Bayasi Guleng; Yasuo Tanaka; Yoshinari Asaoka; Minoru Tada; Motoko Seto; Amarsanaa Jazag; Lin Lianjie; Makoto Okamoto; Hiroyuki Isayama; Minoru Tada; Haruhiko Yoshida; Takao Kawabe; Masao Omata
Dysregulated expression of stem cell factor Bmi1 in precancerous lesions of the gastrointestinal tract.
Clinical cancer research : an official journal of the American Association for Cancer Research 2006;12(23):6960-6.
2006: Hirotsugu Watabe; Yutaka Yamaji; Makoto Okamoto; Shintaro Kondo; Miki Ohta; Tsuneo Ikenoue; Jun Kato; Goichi Togo; Masayuki Matsumura; Haruhiko Yoshida; Takao Kawabe; Masao Omata
Risk assessment for delayed hemorrhagic complication of colonic polypectomy: polyp-related factors and patient-related factors.
Gastrointestinal endoscopy 2006;64(1):73-8.
2006: Yukako Yoshikumi; Hirosato Mashima; Junko Suzuki; Yutaka Yamaji; Makoto Okamoto; Keiji Ogura; Takao Kawabe; Masao Omata
A case of rectal Dieulafoy's ulcer and successful endoscopic band ligation.
Canadian journal of gastroenterology = Journal canadien de gastroenterologie 2006;20(4):287-90.
2006: Yutaka Yamaji; Toru Mitsushima; Hitoshi Ikuma; Hirotsugu Watabe; Makoto Okamoto; Haruhiko Yoshida; Takao Kawabe; Ryoichi Wada; Masao Omata
Right-side shift of colorectal adenomas with aging.
Gastrointestinal endoscopy 2006;63(3):453-8; quiz 464.
2005: Makoto Okamoto; Takao Kawabe; Ken Ohata; Goichi Togo; Tetsuya Hada; Tetsurou Katamoto; Masataka Tanno; Masayuki Matsumura; Yutaka Yamaji; Hirotsugu Watabe; Tsuneo Ikenoue; Haruhiko Yoshida; Masao Omata
Amebic colitis in asymptomatic subjects with positive fecal occult blood test results: clinical features different from symptomatic cases.
The American journal of tropical medicine and hygiene 2005;73(5):934-5.
2005: Nobuo Toda; Masaaki Akahane; Shigeru Kiryu; Yasuo Matsubara; Yutaka Yamaji; Makoto Okamoto; Nobuyuki Minagawa; Kazuyuki Ohgi; Yutaka Komatsu; Naoya Yahagi; Haruhiko Yoshida; Takao Kawabe; Kuni Ohtomo; Masao Omata
Pancreas duct abnormalities in patients with ulcerative colitis: a magnetic resonance pancreatography study.
Inflammatory bowel diseases 2005;11(10):903-8.
2005: Makoto Okamoto; Takao Kawabe; Jun Kato; Yutaka Yamaji; Tsuneo Ikenoue; Masao Omata
Ultrathin colonoscope with a diameter of 9.8 mm for total colonoscopy.
Journal of clinical gastroenterology 2005;39(8):679-83.
2005: Hirotsugu Watabe; Toru Mitsushima; Yutaka Yamaji; Makoto Okamoto; Ryouichi Wada; T Kokubo; H Doi; Hideo Yoshida; Takao Kawabe; Masao Omata
Predicting the development of gastric cancer from combining Helicobacter pylori antibodies and serum pepsinogen status: a prospective endoscopic cohort study.
Gut 2005;54(6):764-8.
2005: Makoto Okamoto; Takao Kawabe; Yutaka Yamaji; Jun Kato; Tsuneo Ikenoue; Goichi Togo; Haruhiko Yoshida; Yasushi Shiratori; Masao Omata
Rectosigmoid findings are not associated with proximal colon cancer: analysis of 6 196 consecutive cases undergoing total colonoscopy.
World journal of gastroenterology : WJG 2005;11(15):2249-54.
2005: Makoto Okamoto; Takao Kawabe; Yutaka Yamaji; Jun Kato; Tsuneo Ikenoue; Goichi Togo; Hirotsugu Watabe; Haruhiko Yoshida; Yasushi Shiratori; Masao Omata
Flat-type early colorectal cancer preferentially develops in right-sided colon in older patients.
Diseases of the colon and rectum 2005;48(1):101-7.
2004: Makoto Okamoto; Takao Kawabe
[Fecal occult blood test].
Nihon rinsho. Japanese journal of clinical medicine 2004;62 Suppl 11():190-2.
2004: Yutaka Yamaji; Toru Mitsushima; Hitoshi Ikuma; Hirotsugu Watabe; Makoto Okamoto; Takao Kawabe; Ryouichi Wada; H Doi; Masao Omata
Incidence and recurrence rates of colorectal adenomas estimated by annually repeated colonoscopies on asymptomatic Japanese.
Gut 2004;53(4):568-72.
2004: Tsuneo Ikenoue; Yohko Hikiba; Fumihiko Kanai; Hideaki Ijichi; Goichi Togo; Miki Ohta; Hirotsugu Watabe; Yutaka Yamaji; Makoto Okamoto; Jun Aragaki; Masayuki Matsumura; Takao Kawabe; Masao Omata
Rapid detection of mutations in the BRAF gene using real-time polymerase chain reaction and melting curve analysis.
Cancer genetics and cytogenetics 2004;149(1):68-71.
2002: Tsuneo Ikenoue; Hideaki Ijichi; Naoya Kato; Fumihiko Kanai; Tsutomu Masaki; William Rengifo; Makoto Okamoto; Masayuki Matsumura; Takao Kawabe; Yasushi Shiratori; Masao Omata
Analysis of the beta-catenin/T cell factor signaling pathway in 36 gastrointestinal and liver cancer cells.
Japanese journal of cancer research : Gann 2002;93(11):1213-20.
2002: Masao Akanuma; Haruhiko Yoshida; Makoto Okamoto; Keiji Ogura; Shin Maeda; Yasuo Hata; Shinpei Sato; Shuichiro Shiina; Takao Kawabe; Yasushi Shiratori; Masao Omata
Risk factors for esophageal variceal bleeding in patients with hepatocellular carcinoma.
Hepato-gastroenterology 2002;49(46):1039-44.
2002: Makoto Okamoto; Yasushi Shiratori; Yutaka Yamaji; Jun Kato; Tsuneo Ikenoue; Goichi Togo; Haruhiko Yoshida; Takao Kawabe; Masao Omata
Relationship between age and site of colorectal cancer based on colonoscopy findings.
Gastrointestinal endoscopy 2002;55(4):548-51.
2002: Yutaka Yamaji; Toru Mitsushima; Hitoshi Ikuma; Makoto Okamoto; Hideo Yoshida; Takao Kawabe; Yasushi Shiratori; Keiji Saito; Kou Yokouchi; Masao Omata
Weak response of helicobacter pylori antibody is high risk for gastric cancer: a cross-sectional study of 10,234 endoscoped Japanese.
Scandinavian journal of gastroenterology 2002;37(2):148-53.
2001: W R Cam; Tadahiko Masaki; T Y Shiratori; N Kato; Makoto Okamoto; Yutaka Yamaji; K Igarashi; T Sano; Masao Omata
Activation of cyclin E-dependent kinase activity in colorectal cancer.
Digestive diseases and sciences 2001;46(10):2187-98.
2001: Yutaka Yamaji; Toru Mitsushima; Hitoshi Ikuma; Makoto Okamoto; Hideo Yoshida; Takao Kawabe; Yasushi Shiratori; Keiji Saito; Kou Yokouchi; Masao Omata
Inverse background of Helicobacter pylori antibody and pepsinogen in reflux oesophagitis compared with gastric cancer: analysis of 5732 Japanese subjects.
Gut 2001;49(3):335-40.
2001: Goichi Togo; Yasushi Shiratori; Makoto Okamoto; Yutaka Yamaji; Masayuki Matsumura; T Sano; T Motojima; Masao Omata
Relationship between grade of microsatellite instability and target genes of mismatch repair pathways in sporadic colorectal carcinoma.
Digestive diseases and sciences 2001;46(8):1615-22.
2001: Tsuneo Ikenoue; Goichi Togo; Kagami Nagai; Hideaki Ijichi; Jun Kato; Yutaka Yamaji; Makoto Okamoto; Nobumasa Kato; Takao Kawabe; A Tanaka; Masayuki Matsumura; Yasushi Shiratori; Masao Omata
Frameshift mutations at mononucleotide repeats in RAD50 recombinational DNA repair gene in colorectal cancers with microsatellite instability.
Japanese journal of cancer research : Gann 2001;92(6):587-91.
2001: Keiji Ogura; Hideo Yoshida; Shingo Maeda; Yutaka Yamaji; Takao Kawabe; Makoto Okamoto; Yasushi Shiratori; Masao Omata
Clarithromycin-based triple therapy for non-resistant Helicobacter pylori infection. How long should it be given?
Scandinavian journal of gastroenterology 2001;36(6):584-8.
1999: Goichi Togo; Makoto Okamoto; Yasushi Shiratori; H Yamaji; Jun Kato; Masayuki Matsumura; T Sano; T Motojima; Masao Omata
Does mutation of transforming growth factor-beta type II receptor gene play an important role in colorectal polyps?
Digestive diseases and sciences 1999;44(9):1803-9.
1999: Makoto Okamoto; Takao Kawabe
[Immunochemical fecal occult blood test].
Nihon rinsho. Japanese journal of clinical medicine 1999;57 Suppl():172-3.
1999: Y Hata; E Hamada; M Takahashi; S Ota; Keiji Ogura; Shuichiro Shiina; Makoto Okamoto; Taeko Okudaira; Takuma Teratani; Shin Maeda; Yuichi Koike; Shinpei Sato; Shuntaro Obi; Takashi Tanaka; Takao Kawabe; Yasushi Shiratori; T Kawase; M Nomura; Masao Omata
Endoscopic variceal ligation is a sufficient procedure for the treatment of oesophageal varices in patients with hepatitis C liver cirrhosis: comparison with injection sclerotherapy.
Journal of gastroenterology and hepatology 1999;14(3):236-40.