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| 1 | Novel risk markers for gastric cancer screening: Present status and future prospects显示文摘Initial identification of populations at high risk of gastric cancer (GC) is important for endoscopic screening of GC. As serum pepsinogen (PG) test-positive subjects with progression of chronic atrophic gastritis (CAG) show a high likelihood of future cancer development, this population warrants careful follow-up observation as a high-risk GC group. By combining the PG test with Helicobacter pylori (HP) antibody titers, the HP-related chronic gastritis stage can be classified, thus identifying not only a GC high-risk group but also a low-risk group. Among PG test-negative patients without CAG, those with high serum PG Ⅱ levels and HP antibody titers are thought to have severe gastric mucosal inflammation and the risk of diffuse-type GC is also high. Meanwhile, in gastric mucosae obtained by endoscopic biopsy, HP infection induces aberrant DNA methylation in CpG islands in multiple gene regions and the extent of methylation clearly correlates with GC risk. By quantifying aberrant DNA methylation in suitable gene markers, we can determine the extent of the epigenetic field for cancerization. These novel concepts and risk markers will have many clinical applications in gastrointestinal endoscopy, including more efficient endoscopic GC screening and a strategic approach to metachronous multiple GCs after endoscopic treatment. | Shotaro Enomoto Takao Maekita Hiroshi Ohata Kimihiko Yanaoka Masashi Oka Masao Ichinose | 2010 | World Journal of Gastrointestinal Endoscopy2010，2，12： | 10 |
| 2 | Resection of a locally advanced hilar tumor and the hepatic artery after stepwise hepatic arterial embolization: A case report显示文摘We herein report a case of a hilar tumor with extensive invasion to the proper hepatic artery, which was successfully treated with a radical resection in a 57-year-old female patient after a stepwise hepatic arterial embolization. She underwent right colectomy and partial hepatectomy for advanced colon cancer two years ago and radiofrequency ablation therapy for a liver metastasis one year ago, respectively. A recurrent tumor was noted around the proper hepatic artery with invasion to the left hepatic duct and right hepatic artery 7 mo previously. We planned a radical resection for the patient 5 mo after the absence of tumor progression was confirmed while he was undergoing chemotherapy. To avoid surgery-related liver failure, we tried to promote the formation of collateral hepatic arteries after stepwise arterial embolizationof the posterior and anterior hepatic arteries two weeks apart. Finally, the proper hepatic artery was occluded after formation of collateral flow from the inferior phrenic and superior mesenteric arteries was confirmed. One month later, a left hepatectomy with hepatic arterial resection was successfully performed without any major complications. | Takuya Miura Kenichi Hakamada Takashi Ohata Shunji Narumi Yoshikazu Toyoki Masaki Nara Keinosuke Ishido Motonari Ohashi Harue Akasaka Hiroyuki Jin Norihito Kubo Shuichi Ono Hiroshi Kijima Mutsuo Sasaki | 2008 | World Journal of Gastroenterology2008，14，22： | 1 |
| 3 | Design and performance of a Ka-band monolithic phase shifter utilizing nonresonant FET switches显示文摘 | Kenichi Maruhashi Hiroshi Mizutani Keiichi Ohata | 2000 | IEEE Transactions on Microwave Theory and Tech- niques2000，，8： | 1 |
| 4 | Three-dimensional J-integral evaluation for cracks with arbitrary curvatures and kinks based on domain integral method for quadratic tetrahedral finite element显示文摘 | Okada Hiroshi Ohata Shogo | 2013 | Engineering Fracture Mechanics2013，109，9： | 1 |
| 5 | Assessment of gastroesophageal reflux disease by serodiagnosis of Helicobacter pylori-related chronic gastritis stage显示文摘AIM:To evaluate the association of Helicobacter pylori(H.pylori)-related chronic gastritis stage with upper gastro-intestinal symptoms and gastro-eso-phageal reflux disease(GERD).METHODS:Subjects underwent upper gastrointestinal endoscopy,a questionnaire using a frequency scale for symptoms of GERD(FSSG),and measurements of serum H.pylori-antibody and pepsinogen(PG)levels.They were classified into the following 4 groups in terms of H.pylori-related chronic gastritis stage:Group A(n = 219),H.pylori(-)PG(-);Group B(n = 310),H.pylori(+)PG(-);Group C(n = 279),H.pylori(+)PG(+);and Group D(n = 17),H.pylori(-)PG(+).RESULTS:Reflux esophagitis occurred in 30.6% of Group A,14.5% of Group B,6.8% of Group C,and 0% of Group D(P < 0.001).Scores for acid reflux sympto-ms decreased significantly with chro-nic gastritis stage(from Group A to D)(P < 0.05),while scores for dysmotility symptoms did no-t differ significantly.The prevalence of nonerosive reflux disease(NERD)did not differ amo-ng groups.However,in subjects with GERD,the prevalence of NERD tended to increase with chronic gastritis stage(P = 0.081).CONCLUSION:Acid reflux sympto-ms and the prevalen-ce of reflux esophagitis can be assessed by measuring both serum H.pylori-antibody and PG levels. | Shotaro Enomoto Masashi Oka Hiroshi Ohata Chizu Mukoubayashi Mika Watanabe Kosaku Moribata Yosuke Muraki Naoki Shingaki Hisanobu Deguchi Kazuki Ueda Izumi Inoue Takao Maekita Mikitaka Iguchi Kimihiko Yanaoka Hideyuki Tamai Mitsuhiro Fujishiro Osamu Mohara Masao Ichinose | 2011 | World Journal of Gastrointestinal Endoscopy2011，3，4： | 0 |
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