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Research of signals involved in development of the anorectum by model mice of anorectal malformations

Research Project

Project/Area Number 25861665
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Pediatric surgery
Research InstitutionChiba University

Principal Investigator

NAKATA Mitsuyuki  千葉大学, 医学部附属病院, 助教 (90375775)

Project Period (FY) 2013-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords直腸肛門奇形 / Wnt5aコンディショナルノックアウトマウス / 肛門括約筋 / 肛門括約筋群 / Wnt5aコンディショナルノックアウト
Outline of Final Research Achievements

We examined the role of Wnt5a for anorectal malformations and development of the anal sphincter by Wnt5a conditional knock-out mouse. 0.05g/maternal weight of Tamoxifen induced necessarily the phenotype. When tamoxifen dosed at enbryonal day 8, the anorectal malformation of the fetus was induced. When tamoxifen dosed after enbryonal day 9, anal opening was normal. The maldevelopment of the elongation of the cloacal plate caused anorectal malformations embryologically. The induction of Wnt5a elongated the cloacal plate. It was shown that Wnt5a decided the phenotype of anorectal malformations at the early stage of the fetus. But wnt5a was not directly concerned with the pathogenesis of an anal sphincter.

Report

(5 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (3 results)

All 2016 2013 Other

All Presentation (3 results)

  • [Presentation] Wnt5aコンディショナルノックアウトマウスにおける直腸肛門奇形モデルの検証と肛門括約筋の発達2016

    • Author(s)
      中田光政
    • Organizer
      第53回日本小児外科学会学術集会
    • Place of Presentation
      ヒルトン福岡シーホーク(福岡県福岡市)
    • Year and Date
      2016-05-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] Wnt5aコンディショナルノックアウトマウスにおける直腸肛門奇形と肛門括約筋群の発生2013

    • Author(s)
      中田光政
    • Organizer
      第50回日本小児外科学会学術集会
    • Place of Presentation
      東京 京王プラザホテル
    • Related Report
      2013 Research-status Report
  • [Presentation] 直腸肛門奇形モデルマウスを用いた肛門形成シグナルの検索

    • Author(s)
      中田光政
    • Organizer
      第19回大腸肛門機能障害研究会
    • Place of Presentation
      東京 ホテルオークラ
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2019-07-29  

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