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A novel mechanism of over active bladder caused by the spontaneous contractions generated in the mucosal layer

Research Project

Project/Area Number 26462447
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Urology
Research InstitutionFukushima Medical University

Principal Investigator

Kushida Nobuhiro  福島県立医科大学, 医学部, 助教 (30381396)

Co-Investigator(Kenkyū-buntansha) 柳田 知彦  福島県立医科大学, 医学部, 講師 (20363765)
羽賀 宣博  福島県立医科大学, 医学部, 助教 (50586617)
小島 祥敬  福島県立医科大学, 医学部, 教授 (60305539)
相川 健  福島県立医科大学, 医学部, 准教授 (80295419)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords下部尿路機能 / 過活動膀胱 / ATP / 尿路上皮 / 膀胱粘膜 / エストロゲン / 膀胱粘膜層 / 自律収縮
Outline of Final Research Achievements

Over active bladder patients are known to cause impaired quality of line because of pollakiuria and urgency urinary incontinence. The number of the patient will increase due to the increasing of the aging population. The mucosal layer in the bladder including urothelial layer associates with regulations of the lower urinary tract functions by releasing some bioactive substances. We focused on the spontaneous contractions in the mucosal layer and the ability of ATP release from the layer in order to study the novel mechanisms causing over active bladder symptoms.
In this study, we used ovariectomide guinea pigs as an over active bladder model. The model caused pollakiuria as well as increased ATP release from the mucosal layer. We also showed that the spontaneous contractions in the mucosal layer could be affected by the ATP, which was probably released from the mucosal layer.

Report

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

    (5 results)

All 2017 2016 2015

All Presentation (5 results)

  • [Presentation] The influence of estrogen depression on lower urinary tract function and the assessment of purinergic system change in the guinea pig bladder2017

    • Author(s)
      櫛田信博
    • Organizer
      アメリカ泌尿器科学会総会
    • Place of Presentation
      ボストン市The Boston Convention and Exhibition Center
    • Year and Date
      2017-05-12
    • Related Report
      2016 Annual Research Report
  • [Presentation] 下部尿路機能に対する女性ホルモン低下の影響/プリン作動性成分の変化を中心とした検討2017

    • Author(s)
      櫛田信博
    • Organizer
      日本泌尿器科学会総会
    • Place of Presentation
      鹿児島市城山観光ホテル
    • Year and Date
      2017-04-20
    • Related Report
      2016 Annual Research Report
  • [Presentation] 女性ホルモンの畜尿・排尿への作用/卵巣摘除モルモットを使用した検討2016

    • Author(s)
      櫛田信博
    • Organizer
      日本排尿機能学会
    • Place of Presentation
      東京都東京国際フォーラム
    • Year and Date
      2016-12-06
    • Related Report
      2016 Annual Research Report
  • [Presentation] The ATP release from the bladder mucosal layer in ovariectomized guinea pigs and contractile response change of the bladder2016

    • Author(s)
      櫛田信博
    • Organizer
      International continence society
    • Place of Presentation
      東京都東京国際フォーラム
    • Year and Date
      2016-09-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] 膀胱壁に存在する自律収縮と放出される内因性ATPの量的・時間的な相関について2015

    • Author(s)
      櫛田信博 、矢部通弘、佐藤雄一、熊谷伸、熊谷研、小川総一郎、小島祥敬、ヤング・ジョン、フライ・クリストファー
    • Organizer
      日本排尿機能学会
    • Place of Presentation
      札幌市
    • Year and Date
      2015-09-11
    • Related Report
      2015 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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