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Elucidation of the pathogenic mechanism of intestinal metaplasia and gastric carcinoma

Research Project

Project/Area Number 17K15928
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Gastroenterology
Research InstitutionThe University of Tokyo

Principal Investigator

Niikura Ryota  東京大学, 医学部附属病院, 助教 (90625609)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
KeywordsHelicobacter pylori / gastric metaplasia / gastric atrophy / gastric cancer / proton pump inhibitor / 腸上皮化生 / 胃癌
Outline of Final Research Achievements

Our study investigated clinical and pathological findings of eradication in patients with Helicobacter Pylori. We have shown three new findings as follows.
(i) Acid suppression drug was associated with worsen reversibility of atrophy in antrum and corpus. (ii) Acid suppression drug such as proton pump inhibitors was associated with increased risk of gastric cancer in patients with eradication of Helicobacter Pylori. (iii) Distinct chemopreventive effects of aspirin in diffuse and intestinal type of gastric cancer was found.

Academic Significance and Societal Importance of the Research Achievements

本研究により、ヘリコバクターピロリ菌の除菌後に起こる様々な胃粘膜変化について重要な知見を得ることができた。これらの知見は、ヘリコバクターピロリ菌除菌後に起こりうる胃癌の予測や予防に関して、極めて有用である可能性を秘めている。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018 2017

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results)

  • [Journal Article] Alpha-Blockers As Colorectal Cancer Chemopreventive: Findings from a Case?Control Study, Human Cell Cultures, and In Vivo Preclinical Testing2019

    • Author(s)
      Suzuki Nobumi、Niikura Ryota、Ihara Sozaburo、Hikiba Yohko、Kinoshita Hiroto、Higashishima Naoko、Hayakawa Yoku、Yamada Atsuo、Hirata Yoshihiro、Nakata Ryo、Okamoto Makoto、Sano Munetaka、Kushiyama Akifumi、Ichinose Mari、Woods Susan L.、Worthley Daniel、Iwamoto Yasuhiko、Koike Kazuhiko
    • Journal Title

      Cancer Prevention Research

      Volume: 12 Issue: 3 Pages: 185-194

    • DOI

      10.1158/1940-6207.capr-18-0288

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] BHLHA15-Positive Secretory Precursor Cells Can Give Rise to Tumors in Intestine and Colon in Mice2019

    • Author(s)
      Hayakawa Yoku、Tsuboi Mayo、Asfaha Samuel、Kinoshita Hiroto、Niikura Ryota、Konishi Mitsuru、Hata Masahiro、Oya Yukiko、,,,Koike Kazuhiko、Wang Timothy C.
    • Journal Title

      Gastroenterology

      Volume: 156 Issue: 4 Pages: 1066-1081.e16

    • DOI

      10.1053/j.gastro.2018.11.024

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Efficacy of Vonoprazan for Gastroesophageal Reflux Symptoms in Patients with Proton Pump Inhibitor-resistant Non-erosive Reflux Disease2018

    • Author(s)
      Niikura Ryota、Yamada Atsuo、Hirata Yoshihiro、Hayakawa Yoku、Takahashi Akihiro、Shinozaki Tomohiro、Takeuchi Yoshinori、Fujishiro Mitsuhiro、Koike Kazuhiko
    • Journal Title

      Internal Medicine

      Volume: 57 Issue: 17 Pages: 2443-2450

    • DOI

      10.2169/internalmedicine.0492-17

    • NAID

      130007480036

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2018-09-01
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Distinct chemopreventive effects of aspirin in diffuse and intestinal-type gastric cancer.2018

    • Author(s)
      Niikura R, Hayakawa Y, Hirata Y, Konishi M, Suzuki N, Ihara S, Yamada A, Ushiku T, Fujishiro M, Fukayama M, Koike K.
    • Journal Title

      Cancer Prev Res (Phila)

      Volume: - Issue: 5 Pages: 279-286

    • DOI

      10.1158/1940-6207.capr-17-0276

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Long-term proton pump inhibitor use is a risk factor of gastric cancer after treatment forHelicobacter pylori: a retrospective cohort analysis2017

    • Author(s)
      Niikura Ryota、Hayakawa Yoku、Hirata Yoshihiro、Yamada Atsuo、Fujishiro Mitsuhiro、Koike Kazuhiko
    • Journal Title

      Gut

      Volume: epub Issue: 10 Pages: 1908-1910

    • DOI

      10.1136/gutjnl-2017-315710

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed

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Published: 2017-04-28   Modified: 2020-03-30  

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