• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Functional analysis of bladder afferent activity in prostatitis

Research Project

Project/Area Number 17K11174
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Urology
Research InstitutionDokkyo Medical University (2019)
The University of Tokyo (2017-2018)

Principal Investigator

AIZAWA NAOKI  獨協医科大学, 医学部, 助教 (80595257)

Co-Investigator(Kenkyū-buntansha) 井川 靖彦  東京大学, 医学部附属病院, 登録診療員 (40159588)
本間 之夫  東京大学, 医学部附属病院, 登録診療員 (40165626)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords前立腺肥大症 / 慢性非細菌性前立腺炎 / ラット / 膀胱知覚 / 膀胱微小収縮 / 炎症 / 求心性神経 / 下部尿路閉塞 / 慢性前立腺炎 / 薬理学 / 生理学 / 神経科学 / トランスレーショナルリサーチ
Outline of Final Research Achievements

To evaluate disorders of prostate origin, we investigated the characteristics of bladder afferent activities in rats with a bladder outlet obstruction (BOO) and a carrageenan-induced chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS).
In BOO rats, during bladder filling, the bladder afferent activities of Adelta-fibers were attenuated, but afferent activities of both Adelta- and C-fibers were intermittently enhanced by propagation of microcontractions, which has been suggested to the development of urgency.
In contrast, carrageenan-induced CP/CPPS rats presented edema, ischemia, and inflammatory pain in the prostate; whereas, little change was detected in bladder sensation. These findings, evaluated using a direct measurement of the mechanosensitive single-unit afferent nerve activity, suggest that the bladder sensation is unlikely deteriorated in this model.

Academic Significance and Societal Importance of the Research Achievements

前立腺肥大症と慢性前立腺炎は類似した症状を呈する一方で、各々尿意切迫感と慢性骨盤痛という異なる症状を伴う。これらの症状の発生には膀胱や周辺臓器の知覚異常が関与しており、その関与の様式が異なることが示唆されるが、実臨床においては、どちらか一方の疾患のみで診断・治療され、混同している場合がある。
我々の検討の結果、前立腺肥大症では、膀胱微小収縮に起因する知覚異常亢進が認められた。他方、慢性非細菌性前立腺炎では、前立腺由来の病態が、膀胱知覚機能に影響を及ぼさない可能性が示唆された。
漠然と認識していた前立腺疾患患者の下部尿路症状に対する理解を深め、異なる治療体系を構築することが可能になると考えられた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (33 results)

All 2020 2019 2018 2017 Other

All Journal Article (15 results) (of which Int'l Joint Research: 12 results,  Peer Reviewed: 15 results,  Open Access: 8 results) Presentation (17 results) (of which Int'l Joint Research: 9 results,  Invited: 4 results) Remarks (1 results)

  • [Journal Article] Pathophysiological changes of the lower urinary tract behind voiding dysfunction in streptozotocin-induced long-term diabetic rats.2020

    • Author(s)
      Masuda K, Aizawa N, Watanabe D, Okegawa T, Kume H, Igawa Y, Fukuhara H.
    • Journal Title

      Sci Rep.

      Volume: 10(1) Issue: 1 Pages: 4182-4182

    • DOI

      10.1038/s41598-020-61106-y

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] KPR-5714, a Novel Transient Receptor Potential Melastatin 8 (TRPM8) Antagonist, Improves Overactive Bladder via Inhibition of Bladder Afferent Hyperactivity in Rats.2020

    • Author(s)
      Nakanishi O, Fujimori Y, Aizawa N, Hayashi T, Matsuzawa A, Kobayashi JI, Hirasawa H, Mutai Y, Tanada F, Igawa Y.
    • Journal Title

      J Pharmacol Exp Ther.

      Volume: Epub ahead of print Issue: 2 Pages: 239-247

    • DOI

      10.1124/jpet.119.263616

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Longitudinal change of comprehensive lower urinary tract symptoms and various types of urinary incontinence during robot-assisted radical prostatectomy2019

    • Author(s)
      Fujimura Tetsuya、Igawa Yasuhiko、Aizawa Naoki、Niimi Aya、Yamada Yuta、Sugihara Toru、Kamei Jun、Sato Yusuke、Matsunaga Akiko、Yoshida Mikako、Shinoda Yusuke、Fukuhara Hiroshi、Nakagawa Tohru、Homma Yukio、Kume Haruki
    • Journal Title

      Neurourology and Urodynamics

      Volume: 38 Issue: 4 Pages: 1067

    • DOI

      10.1002/nau.23952

    • URL

      https://pure.teikyo.jp/en/publications/aa8f9e13-642b-470f-92c0-5a75d17fe141

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] β3-Adrenoceptors in the normal and diseased urinary bladder - what are the open questions?2019

    • Author(s)
      Igawa Yasuhiko、Aizawa Naoki、Michel Martin C.
    • Journal Title

      British Journal of Pharmacology

      Volume: 印刷中 Issue: 14 Pages: 2525-2538

    • DOI

      10.1111/bph.14658

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] RQ-00434739, a novel TRPM8 antagonist, inhibits prostaglandin E2-induced hyperactivity of the primary bladder afferent nerves in rats2019

    • Author(s)
      Aizawa Naoki、Ohshiro Hiroyuki、Watanabe Shuzo、Kume Haruki、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Life Sciences

      Volume: 218 Pages: 89-95

    • DOI

      10.1016/j.lfs.2018.12.031

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] May perioperative ultrasound-guided pelvic floor muscle training promote early recovery of urinary continence after robot-assisted radical prostatectomy?2018

    • Author(s)
      Yoshida Mikako、Matsunaga Akiko、Igawa Yasuhiko、Fujimura Tetsuya、Shinoda Yusuke、Aizawa Naoki、Sato Yusuke、Kume Haruki、Homma Yukio、Haga Nobuhiko、Sanada Hiromi
    • Journal Title

      Neurourology and Urodynamics

      Volume: 38 Issue: 1 Pages: 158-164

    • DOI

      10.1002/nau.23811

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Attenuated lipopolysaccharide-induced inflammatory bladder hypersensitivity in mice deficient of transient receptor potential ankilin12018

    • Author(s)
      Kamei Jun、Aizawa Naoki、Nakagawa Takayuki、Kaneko Shuji、Kume Haruki、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 15622-15622

    • DOI

      10.1038/s41598-018-33967-x

    • NAID

      120006534589

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Inhibitory effects of silodosin on the bladder mechanosensitive afferent activities and their relation with bladder myogenic contractions in male rats with bladder outlet obstruction2018

    • Author(s)
      Aizawa Naoki、Watanabe Daiji、Fukuhara Hiroshi、Fujimura Tetsuya、Kume Haruki、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Neurourology and Urodynamics

      Volume: 37 Issue: 6 Pages: 1897-1903

    • DOI

      10.1002/nau.23547

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] KPR-2579, a novel TRPM8 antagonist, inhibits acetic acid-induced bladder afferent hyperactivity in rats2018

    • Author(s)
      Aizawa Naoki、Fujimori Yoshikazu、Kobayashi Jun-ichi、Nakanishi Osamu、Hirasawa Hideaki、Kume Haruki、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Neurourology and Urodynamics

      Volume: 37 Issue: 5 Pages: 1633-1640

    • DOI

      10.1002/nau.23532

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Age-related changes in function and gene expression of the male and female mouse bladder2018

    • Author(s)
      Kamei Jun、Ito Hiroki、Aizawa Naoki、Hotta Harumi、Kojima Toshio、Fujita Yasunori、Ito Masafumi、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Sci Rep

      Volume: 8(1) Issue: 1 Pages: 2089-2089

    • DOI

      10.1038/s41598-018-20406-0

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Pathophysiology of the underactive bladder.2017

    • Author(s)
      Aizawa N, Igawa Y
    • Journal Title

      Investig Clin Urol

      Volume: 58(Suppl 2) Issue: Suppl 2 Pages: S82-S82

    • DOI

      10.4111/icu.2017.58.s2.s82

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characteristics of the mechanosensitive bladder afferent activities in relation with microcontractions in male rats with bladder outlet obstruction2017

    • Author(s)
      Aizawa Naoki、Ichihara Koji、Fukuhara Hiroshi、Fujimura Tetsuya、Andersson Karl-Erik、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Sci Rep

      Volume: 7(1) Issue: 1 Pages: 7646-7646

    • DOI

      10.1038/s41598-017-07898-y

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Toll-like receptor 7 is overexpressed in the bladder of Hunner-type interstitial cystitis, and its activation in the mouse bladder can induce cystitis and bladder pain2017

    • Author(s)
      Ichihara Koji、Aizawa Naoki、Akiyama Yoshiyuki、Kamei Jun、Masumori Naoya、Andersson Karl-Erik、Homma Yukio、Igawa Yasuhiko
    • Journal Title

      Pain

      Volume: 158(8) Issue: 8 Pages: 1538-1545

    • DOI

      10.1097/j.pain.0000000000000947

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Incontinence: How do β3-adrenoceptor agonists work in the bladder?2017

    • Author(s)
      Igawa Yasuhiko、Aizawa Naoki
    • Journal Title

      Nature Reviews Urology

      Volume: 14(6) Issue: 6 Pages: 330-332

    • DOI

      10.1038/nrurol.2017.43

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synergic Suppressive Effect of Silodosin and Imidafenacin on Non-Voiding Bladder Contractions in Male Rats with Subacute Bladder Outlet Obstruction2017

    • Author(s)
      SUGIYAMA Rino、AIZAWA Naoki、ITO Hiroki、FUJIMURA Tetsuya、SUZUKI Motofumi、NAKAGAWA Tohru、FUKUHARA Hiroshi、KUME Haruki、HOMMA Yukio、IGAWA Yasuhiko
    • Journal Title

      LUTS

      Volume: 9 Issue: 2 Pages: 94

    • DOI

      10.1111/luts.12109

    • URL

      https://pure.teikyo.jp/en/publications/3e345d3d-38e3-470a-adbd-12c53bf74c15

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 膀胱伸展受容一次求心性神経活動の直接測定法による排尿知覚の評価 ―カラゲニン誘発慢性前立腺炎モデルでの検討―2020

    • Author(s)
      相澤直樹、藤田朋恵
    • Organizer
      第93回 日本薬理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 下部尿路閉塞ラットの膀胱における微小収縮に同期した一次求心性神経活動におよぼす タダラフィルの作用2019

    • Author(s)
      相澤直樹, 井川靖彦, 藤田朋恵
    • Organizer
      第61回 日本平滑筋学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Effects of RQ-00434739, a transient receptor potential Melastatin 8 (TRPM8) channel antagonist, on deep body temperature and on bladder function in rats2018

    • Author(s)
      Aizawa N, Ohshiro H, Watanabe S, Kume H, Igawa Y
    • Organizer
      48th Annual Meeting of the International Continence Society
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Preoperative ultrasound-guided pelvic floor muscle training facilitates continence recovery in the early phase after robot assisted radical prostatectomy2018

    • Author(s)
      Yoshida M, Matsunaga A, Fijimura T, Sato Y, Kamei J, Watanabe D, Aizawa N, Shinoda Y, Haga N, Kume H, Igawa Y, Sanada H
    • Organizer
      48th Annual Meeting of the International Continence Society
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Comparison of clinical characteristics between interstitial cystitis and hypersensitive bladder2018

    • Author(s)
      Watanabe D, Akiyama Y, Nomiya A, Niimi A, Aizawa N, Kume H, Igawa Y, Homma Y
    • Organizer
      48th Annual Meeting of the International Continence Society
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 難治性過活動膀胱の治療戦略, 基礎研究からみた新規治療2018

    • Author(s)
      相澤直樹, 井川靖彦
    • Organizer
      第25回日本排尿機能学会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] BPH薬物療法:今後の展開は?基礎研究の観点より2018

    • Author(s)
      相澤直樹、井川靖彦
    • Organizer
      第83回日本泌尿器科学会東部総会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] RQ-00434739, a novel TRPM8 antagonist, inhibits prostaglandin-E2-induced hyperactivity of the primary bladder afferent nerves in rats.2018

    • Author(s)
      Aizawa N, Ohshiro H, Watanabe S, Homma Y, Igawa Y.
    • Organizer
      33rd Annual European Association of Urology (EAU) Congress
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Involvement of transient receptor aotential ankyrin 1 (TRPA1) in the lipopolysaccharide (LPS)-induced inflammatory bladder hypersensitivity in mice.2018

    • Author(s)
      Kamei J, Aizawa N, Nakagawa T, Kaneko S, Homma Y, Igawa Y.
    • Organizer
      4th SATURN Continence Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of tadalafil, a PDE type 5 inhibitor, on the bladder mechanosensitive afferent activities related to microcontractions in male rats with bladder outlet obstruction.2017

    • Author(s)
      Aizawa N, Fukuhara H, Fujimura T, Homma Y, Igawa Y.
    • Organizer
      47 th International Continence Society (ICS) Annual meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] KPR-2579, a novel TRPM8 antagonist, inhibits acetic-acid-induced bladder hyperactivity via mechanosensitive afferent C-fibers in rats.2017

    • Author(s)
      Aizawa N, Fujimori Y, Kobayashi J, Nakanishi O, Hirasawa H, Homma Y, Igawa Y.
    • Organizer
      47 th International Continence Society (ICS) Annual meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Functional role of Transient Receptor Potential Melastatin 8 (TRPM8) channel in the rat urinary bladder assessed by using a novel potent antagonist.2017

    • Author(s)
      Aizawa N, Ohshiro H, Watanabe S, Homma Y, Igawa Y.
    • Organizer
      47 th International Continence Society (ICS) Annual meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Preoperative ultrasound-guided pelvic floor muscle training promotes early recovery of urinary continence after robot assisted radical prostatectomy.2017

    • Author(s)
      Yoshida M, Matsunaga A, Fujimura T, Shinoda Y, Niimi A, Aizawa N, Homma Y, Sanada H, Igawa Y.
    • Organizer
      47 th International Continence Society (ICS) Annual meeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 自発収縮と求心性シグナル (Mechanosensitive bladder afferent activities in relation with spontaneous microcontractions)2017

    • Author(s)
      相澤直樹、井川靖彦
    • Organizer
      第24回日本排尿機能学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] ラット膀胱におけるTRPM8チャネルの機能的役割:新規TRPM8拮抗薬を用いた検討2017

    • Author(s)
      相澤直樹、大城博行、渡邉修造、藤村哲也、 福原 浩、本間之夫、井川靖彦
    • Organizer
      第24回日本排尿機能学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 相澤直樹、藤森芳和、小林淳一、中西 修、平澤秀明、 藤村哲也、福原 浩、本間之夫、井川靖彦2017

    • Author(s)
      膀胱内酢酸注入により惹起されるラット過知覚膀胱症状に及ぼす新規TRPM8拮抗薬KPR-2579の作用
    • Organizer
      第24回日本排尿機能学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 排尿知覚の薬理学・生理学的機能解析2017

    • Author(s)
      相澤直樹、井川靖彦
    • Organizer
      日本薬学会 第138年会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Remarks] 東京大学 大学院医学系研究科 コンチネンス医学講座

    • URL

      http://cont-med.umin.jp/

    • Related Report
      2018 Research-status Report 2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi