FullText URL O003032.pdf
Author 岡田 裕之|
Published Date 1996-06-30
Content Type Thesis or Dissertation
Grant Number 乙第3032号
Granted Date 1996-06-30
Thesis Type Doctor of Philosophy in Medical Science
Grantor 岡山大学
language 日本語
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Takahashi, Takahide| Ota, Yoko| Tanaka, Takehiro| Asada, Noboru| Yano, Shuya| Uka, Mayu| Nakamura, Rei| Baba, Yuki| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Published Date 2020-04-09
Publication Title Case Reports in Gastrointestinal Medicine
Volume volume2020
Publisher Hindawi
Start Page 7947540
ISSN 2090-6528
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 Masaya Iwamuro et al.
File Version publisher
PubMed ID 32328319
DOI 10.1155/2020/7947540
Web of Science KeyUT 000528921300002
Related Url isVersionOf https://doi.org/10.1155/2020/7947540
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Murakami, Toshi| Tanaka, Takehiro| Oka, Shohei| Kawano, Seiji| Kawahara, Yoshiro| Okada, Hiroyuki|
Published Date 2020-06-04
Publication Title Case Reports in Gastrointestinal Medicine
Volume volume2020
Publisher Hindawi
Start Page 6381670
ISSN 2090-6528
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 Masaya Iwamuro et al.
File Version publisher
PubMed ID 32566328
DOI 10.1155/2020/6381670
Web of Science KeyUT 000542326600001
Related Url isVersionOf https://doi.org/10.1155/2020/6381670
JaLCDOI 10.18926/AMO/59958
FullText URL 74_3_245.pdf
Author Yamamoto, Shumpei| Takayama, Hiroshi| Shimodate, Yuichi| Takezawa, Rio| Nishimura, Naoyuki| Doi, Akira| Mouri, Hirokazu| Matsueda, Kazuhiro| Mizuno, Motowo| Okada, Hiroyuki|
Abstract Antithrombotic therapy is a major risk factor for delayed bleeding after endoscopic submucosal dissection (ESD) for gastric neoplasia. A potassium-competitive acid blocker, vonoprazan, is expected to prevent delayed bleeding better than conventional proton pomp inhibitors (PPIs), but the evidence is controversial. We sought to clarify the efficacy of vonoprazan for prevention of delayed bleeding after gastric ESD in patients under antithrombotic therapy. We prospectively registered 50 patients who underwent gastric ESD while receiving antithrombotic therapy and vonoprazan in our institution between October 2017 and September 2018. The incidence of delayed bleeding was compared with that in a historical control group of 116 patients treated with conventional PPI. We also evaluated risk factors associated with delayed bleeding. Delayed bleeding was observed in 8 of 50 patients (16.0%), which was not dissimilar from the incidence in the historical control group (12.1%) (p=0.49). In the univariate analysis, age (> 70 years) (p=0.034), multiple antithrombotic drug use (p<0.01), procedure time (> 200 min) (p=0.038) and tumor size (> 40 mm) (p<0.01) were associated with delayed bleeding after gastric ESD, but vonoprazan was not (p=0.49). Vonoprazan may not be more effective than conventional PPIs in preventing delayed bleeding after gastric ESD in patients receiving antithrombotic therapy.
Keywords vonoprazan endoscopic submucosal dissection antithrombotic drug gastric cancer
Amo Type Original Article
Published Date 2020-06
Publication Title Acta Medica Okayama
Volume volume74
Issue issue3
Publisher Okayama University Medical School
Start Page 245
End Page 250
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 32577023
FullText URL fulltext.pdf
Author Iwamuro, Masaya| Miyahara, Koji| Sakaguchi, Chihiro| Takenaka, Ryuta| Kobayashi, Sayo| Mouri, Hirokazu| Tanaka, Shigetomi| Toyokawa, Tatsuya| Tanaka, Shouichi| Nishimura, Mamoru| Yamauchi, Kenji| Tanaka, Takehiro| Okada, Hiroyuki|
Keywords 18F-fluorodeoxyglucose-positron emission tomography mesenchymal tumor gastric neoplasms gastrointestinal stromal tumor schwannoma
Published Date 2020-05-01
Publication Title Journal of Clinical Medicine
Volume volume9
Issue issue5
Publisher MDPI
Start Page 1301
ISSN 2077-0383
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2020 by the authors.
File Version publisher
PubMed ID 32370028
DOI 10.3390/jcm9051301
Web of Science KeyUT 000540223800058
Related Url isVersionOf https://doi.org/10.3390/jcm9051301
Author Okada, Hiroyuki|
Published Date 2012-12-03
Publication Title 岡山医学会雑誌
Volume volume124
Issue issue3
Content Type Journal Article
JaLCDOI 10.18926/AMO/59957
FullText URL 74_3_237.pdf
Author Oyama, Atsushi| Uchida, Daisuke| Shiraha, Hidenori| Sawahara, Hiroaki| Kato, Ryo| Iwamuro, Masaya| Horiguchi, Shigeru| Okada, Hiroyuki|
Abstract The physiological role of the reduced expression of immortalized cells (REIC)/Dickkopf-3 (Dkk-3) protein in patients with hepatocellular carcinoma (HCC) remains unclear. In this study, we evaluated the effect of the REIC/Dkk-3 protein on HCC cell proliferation and assessed the relationship between the serum REIC/Dkk-3 protein level and the prognosis in patients with HCC. We evaluated the REIC/Dkk-3 protein-induced anticancer effects on Huh7 and Hep3B cells (HCC cell lines) in the presence of peripheral blood mononuclear cells (PBMCs), and found that combination treatment with REIC/Dkk-3 protein and PBMCs reduced the proliferation of HCC cells (Hep3B: 82.0%±16.3%; Huh7: 72.6%±9.1%). We also studied 194 HCC patients who underwent primary liver resection or primary radiofrequency ablation from 2008 to 2017. Serum REIC/Dkk-3 protein levels were measured by an enzyme-linked immunosorbent assay and compared to the prognostic data. The 3-year disease-free survival of the REIC/Dkk-3 high group was significantly higher than that in the REIC/Dkk-3 low group. In conclusion, this is the first study investigating the relationship between HCC patient survival and serum REIC/Dkk-3 protein levels in a large population. Based on the results, the serum REIC/Dkk-3 protein level should be considered a new prognostic marker for patients with HCC.
Keywords enzyme-linked immunosorbent assay liver resection primary radiofrequency ablation Huh7 Hep3B
Amo Type Original Article
Published Date 2020-06
Publication Title Acta Medica Okayama
Volume volume74
Issue issue3
Publisher Okayama University Medical School
Start Page 237
End Page 243
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2020 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 32577022
FullText URL CGH17_6_56.pdf fig.pdf
Author Tomoda, Takeshi| Kato, Hironari| Okada, Hiroyuki|
Published Date 2019-05-31
Publication Title Clinical Gastroenterology and Hepatology
Volume volume17
Issue issue6
Publisher Elsevier Science
Start Page e56
End Page e57
ISSN 15423565
NCID AA11845942
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2019 by the AGA Institute
File Version author
PubMed ID 29857148
DOI 10.1016/j.cgh.2018.05.032
Web of Science KeyUT 000464657100006
Related Url isVersionOf https://doi.org/10.1016/j.cgh.2018.05.032
FullText URL Gastroenterology156_6_1753.pdf fig.pdf
Author Tomoda, Takeshi| Kato, Hironari| Ueki, Toru| Akimoto, Yutaka| Hata, Hidenori| Fujii, Masakuni| Harada, Ryo| Ogawa, Tsuneyoshi| Wato, Masaki| Takatani, Masahiro| Matsubara, Minoru| Kawai, Yoshinari| Okada, Hiroyuki|
Keywords Drug Inflammation Pancreas Smooth-Muscle Relaxant
Published Date 2019-05-31
Publication Title Gastroenterology
Volume volume156
Issue issue6
Publisher W B SAUNDERS CO-ELSEVIER
Start Page 1753
End Page 1760
ISSN 00165085
NCID AA0065394X
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 30772342
DOI 10.1053/j.gastro.2019.01.267
Web of Science KeyUT 10.1053/j.gastro.2019.01.267
Related Url isVersionOf https://doi.org/10.1053/j.gastro.2019.01.267
Author Takata, Katsuyoshi| Sato, Yasuharu| Nakamura, Naoya| Tokunaka, Mami| Miki, Yukari| Kikuti, Yara Yukie| Igarashi, Kazuhiko| Ito, Etsuro| Harigae, Hideo| Kato, Seiichi| Hayashi, Eiko| Oka, Takashi| Hoshii, Yoshinobu| Tari, Akira| Okada, Hiroyuki| Mohamado, ABD Alkader Lamia| Maeda, Yoshinobu| Tanimoto, Mitsune| Kinoshita, Tomohiro| Yoshino, Tadashi|
Published Date 2013-08-01
Publication Title 岡山医学会雑誌
Volume volume125
Issue issue2
Content Type Journal Article
Title Alternative Changes of colonic mucosa caused by long-term use and discontinuation of anthraquinone
FullText URL 129_23.pdf
Author Iwano, Eiji| Iwamuro, Masaya| 岡田 裕之|
Abstract Anthraquinone, an anthracene derivatives, is widely used as a purgative medicine. The long-term use of anthraquinone is known to cause melanosis coli and elevated lesions in the colon. However, the clinical course of patients who take anthraquinone over a long term and those who discontinue the drug has not been fully investigated. Here we investigated 22 patients who had colonic mucosal changes ( i.e., melanosis coli and elevated lesions) who had been taking anthraquinone for at least one year and discontinued it. We classified the elevated lesions into two subtypes:the small-lesion, which included multiple small nodules that were < 2 mm in dia., and the large-lesion, which included a single or multiple nodules of ≥ 2-mm dia. We used colonoscopy to investigate the changes of colonic lesions between before and after the discontinuation of anthraquinone. The results indicated that the nodules of the small-lesion group were lymphoid follicle hyperplasia. In the large-lesion group, adenoma was most frequently observed ( n=118) , followed by hyperplastic polyp ( n=52) and inflammatory changes with edema ( n=22) . Melanosis coli and elevated lesions were decreased or invisible after the discontinuation of anthraquinone. Our findings thus suggest that the long-term use of anthraquinone may cause some type of elevated lesions due to chronic inflammation. It is recommended that the use of anthraquinone be limited to a short term.
Keywords アントラセン誘導体(anthracene derivatives) アントラキノン(anthraquinone) 大腸黒皮症(melanosis coli) 大腸メラノーシス(pseudomelanosis coli) リンパ濾胞過形成(lymphoid follicle hyperplasia)
Publication Title Journal of Okayama Medical Association
Published Date 2017-04-03
Volume volume129
Issue issue1
Start Page 23
End Page 30
ISSN 0030-1558
language 日本語
Copyright Holders Copyright (c) 2017 岡山医学会
File Version publisher
DOI 10.4044/joma.129.23
NAID 130005632078
FullText URL JGastroenterol_54_11_1019.pdf Table.pdf Figure 1.jpg Figure 2.jpg Figure 3A.tif Figure 3B.tif supplemental figure 1.jpg
Author Matsumoto, Kazuyuki| Ohara, Toshiaki| Fujisawa, Masayoshi| Takaki, Akinobu| Takahara, Masahiro| Tanaka, Noriyuki| Kato, Hironari| Horiguchi, Shigeru| Yoshida, Ryuichi| Umeda, Yuzo| Fushimi, Soichiro| Yagi, Takahito| Matsukawa, Akihiro| Okada, Hiroyuki|
Keywords Immunohistochemistry PD-L1 Pancreatic cancer
Note This fulltext will be available in Apr 2020|
Published Date 2019-04-29
Publication Title Journal of Gastroenterology
Volume volume54
Issue issue11
Start Page 1019
End Page 1028
ISSN 09441174
NCID AA10988015
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 31032528
DOI 10.1007/s00535-019-01586-6
Web of Science KeyUT 000492169400008
Related Url isVersionOf https://doi.org/10.1007/s00535-019-01586-6
Author Tomoda, Takeshi| Kato, Hironari| Miyamoto, Kazuya| Matsumi, Akihiro| Ueta, Eijiro| Fujii, Yuuki| Saragai, Yousuke| Yamazaki, Tatsuhiro| chida, Daisuke| atsumoto, Kazuyuki| Horiguchi, Shigeru| Tsutsumi, Koichiro| Okada, Hiroyuki|
Keywords Malignant biliary obstruction Double-balloon enteroscope Endoscopic retrograde cholangiopancreatography Surgically altered anatomy
Note This fulltext is aailable in Jan. 2021.|
Published Date 2020-01-16
Publication Title Surgical Endoscopy
ISSN 09302794
NCID AA10750363
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 31950273
DOI 10.1007/s00464-020-07385-y
Web of Science KeyUT 000507705600001
Related Url isVersionOf https://doi.org/10.1007/s00464-020-07385-y
Author Tomoda, Takeshi | Kato, Hironari| Miyamoto, Kazuya| Matsumi, Akihiro| Ueta, Eijiro| Fujii, Yuuki| Saragai, Yousuke| Yamazaki, Tatsuhiro| Uchida, Daisuke| Matsumoto, Kazuyuki| Horiguchi, Shigeru| Tsutsumi, Koichiro| Okada, Hiroyuki|
Note Correction to: Surgical Endoscopy https://doi.org/10.1007/s00464-020-07385-y </br>This fulltext is available in Feb. 2021.|
Published Date 2020-02-06
Publication Title Surgical Endoscopy
Publisher Springer
ISSN 09302794
NCID AA10750363
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
File Version author
PubMed ID 32030547
DOI 10.1007/s00464-020-07399-6
Web of Science KeyUT 000515963500002
Related Url isVersionOf https://doi.org/10.1007/s00464-020-07399-6
JaLCDOI 10.18926/15500
FullText URL Mem_Fac_Eng_OU_25_2_1.pdf
Author Okada, Hiroyuki| Hida, Moritaka| Sakakibara, Akira| Takemoto, Yoshito|
Abstract Tensile strength and elongation of cast magnesium reinforced with titanium fiber were measured by tensile test. The pull-out test of a titanium rod partially embedded in a magnesium matrix was performed to evaluate interfacial bonding strength between magnesium and titanium. It was found that when the fiber volume fraction was changed from 1% to 14%, the tensile strength was improved with increase of volume fraction, while the improvement of elongation tended to be restrained beyond the volume fraction of 10%. The interfacial strength was revealed to be strong, and this was substantiated by the scanning electron microscopy showing an excellent wettability between the titanium fiber and the magnesium matrix.
Publication Title Memoirs of the Faculty of Engineering, Okayama University
Published Date 1991-03-28
Volume volume25
Issue issue2
Start Page 1
End Page 8
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307559
FullText URL DLD51_1_168.pdf
Author Iwamuro, Masaya| Urata, Haruo| Tanaka, Takehiro| Okada, Hiroyuki|
Published Date 2019-01-31
Publication Title Digestive and Liver Disease
Volume volume51
Issue issue1
Publisher Elsevier
Start Page 168
ISSN 15908658
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © 2018 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.
File Version author
PubMed ID 30145054
DOI 10.1016/j.dld.2018.07.031
Web of Science KeyUT 000454119300026
Related Url isVersionOf https://doi.org/10.1016/j.dld.2018.07.031
FullText URL GRP_8159072.pdf
Author Iwamuro, Masaya| Aoyama, Yuki| Suzuki, Seiyuu| Kobayashi, Sayo| Toyokawa, Tatsuya| Moritou, Yuki| Hori, Shinichiro| Matsueda, Kazuhiro| Yoshioka, Masao| Tanaka, Takehiro| Okada, Hiroyuki|
Published Date 2019-09-08
Publication Title Gastroenterology Research and Practice
Publisher Hindawi
Start Page 8159072
ISSN 1687-6121
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders Copyright © 2019 Masaya Iwamuro et al.
File Version publisher
PubMed ID 31582972
DOI 10.1155/2019/8159072
Web of Science KeyUT 000487588000001
Related Url isVersionOf https://doi.org/10.1016/bs.aiip.2019.01.001
FullText URL ecancermedicalscience2019_933.pdf
Author Iwamuro, Masaya| Tanaka, Takehiro| Nishida, Kenji| Kanzaki, Hiromitsu| Kawano, Seiji| Kawahara, Yoshiro| Yoshino, Tadashi| Okada, Hiroyuki|
Keywords follicular gastritis gastric neoplasms gastrointestinal endoscope mucosa-associated lymphoid tissue lymphoma nodular gastritis
Published Date 2019-06-03
Publication Title ecancermedicalscience
Volume volume13
Publisher CANCER INTELLIGENCE
Start Page 933
ISSN 1754-6605
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders © the authors
File Version publisher
PubMed ID 31281430
DOI 10.3332/ecancer.2019.933
Web of Science KeyUT 000472729000001
Related Url isVersionOf https://doi.org/10.3332/ecancer.2019.933
FullText URL CRGM_2019_5742672.pdf
Author Iwamuro, Masaya| Urata, Haruo| Hirata, Shoichiro| Ueki, Toru| Hanabata, Tetsuro| Takeda, Sho| Teraoka, Akira| Okada, Hiroyuki|
Published Date 2019-05-23
Publication Title Case Reports in Gastrointestinal Medicine
Publisher HINDAWI
Start Page 5742672
ISSN 20906528
Content Type Journal Article
language 英語
OAI-PMH Set 岡山大学
Copyright Holders Copyright © 2019 Masaya Iwamuro et al.
File Version publisher
PubMed ID 31240139
DOI 10.1155/2019/5742672
Web of Science KeyUT 000470161500001
Related Url isVersionOf https://doi.org/10.1155/2019/5742672
Title Alternative Efficacy of Helicobacter pylori eradication followed by the administration of a proton pump inhibitor (PPI) or PPI plus a prokinetic in H. pylori-positive patients with dyspepsia
Author 三浦 公| Iwamuro, Masaya| Toyokawa, Tatsuya| Takenaka, Ryuta| Inoue, Masafumi| Ito, Mamoru| Okada, Hiroyuki|
Abstract To investigate whether treatment comprised of Helicobacter pylori eradication followed by the administration of a proton pump inhibitor (PPI) alone and a dual treatment with a PPI plus a prokinetic agent helps relieve symptoms, we treated 26 patients with H. pylori infection and dyspepsia with the sequential treatment and assessed their symptoms. Scores for gastroesophageal reflux disease (GERD) and dyspepsia in a modified F-scale were significantly improved after the eradication of H. pylori, and symptoms were completely relieved in 13 patients. The remaining 13 patients received 4-week treatment with the PPI rabeprazole, and their GERD scores significantly improved after the treatment. The symptoms of five patients completely disappeared ; the other eight patients required dual treatment with a PPI plus the prokinetic acotiamide. Early satiety tended to be relieved after the dual treatment, but the improvement was not significant. Thus, in patients with dyspepsia and an H. pylori infection, the H. pylori should be eradicated first. The administration of a PPI is useful in patients with GERD symptoms, and a PPI+ acotiamide may be beneficial for residual symptoms of early satiety.
Keywords 機能性ディスペプシア (functional dyspepsia) ヘリコバクター・ピロリ (Helicobacter pylori) プロトンポンプ阻害剤 (proton pomp inhibitor) 消化管運動機能改善剤 (acotiamide)
Publication Title Journal of Okayama Medical Association
Published Date 2019-12-02
Volume volume131
Issue issue3
Start Page 139
End Page 143
ISSN 0030-1558
Related Url isVersionOf https://doi.org/10.4044/joma.131.139
language 日本語
Copyright Holders Copyright (c) 2019 岡山医学会
File Version publisher
DOI 10.4044/joma.131.139
NAID 130007782646