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2013 Fiscal Year Annual Research Report

求心性神経伝達系を標的とする下部尿路機能障害の新規薬物療法の開発

Research Project

Project/Area Number 23592358
Research InstitutionThe University of Tokyo

Principal Investigator

井川 靖彦  東京大学, 医学部附属病院, 教授 (40159588)

Co-Investigator(Kenkyū-buntansha) 相澤 直樹  東京大学, 医学部附属病院, 助教 (80595257)
本間 之夫  東京大学, 医学部附属病院, 教授 (40165626)
Keywords求心性神経活動 / 膀胱 / 加齢 / 間質性膀胱炎 / 過活動膀胱
Research Abstract

L-arginine, PDE type5阻害薬(sildenafil, tadalafil),beta3AR作動薬(mirabegron),alpha1遮断薬(silodosin),抗コリン薬(imidafenacin, 5-HMT)について,膀胱伸展刺激受容を担うAδ線維およびC線維の神経活動に与える直接効果を検証したところ,L-arginine, sildenafil, tadalafilはいずれも,Aδ線維およびC線維の両神経活動を抑制したのに対して,mirabegronとsilodosinは,主にAδ線維の神経活動を抑制し,抗コリン薬はcapsaicin感受性C線維の神経活動を選択的に抑制することを明らかにした。TRPA1チャンネルの活性化はAδ線維とC線維の両者の活動を促進する作用があることを明らかにし、TRPA1チャンネルが過活動膀胱や過知覚膀胱の治療標的候補となりうることを示した。内因性カンナビノイドの分解酵素であるFAAHの阻害薬は、ラット膀胱の伸展受容求心性神経活動を抑制する効果があり、PGE2膀胱内注入によって活性化される膀胱伸展受容C線維を抑制しうることを明らかにし、FAAH阻害薬が過活動膀胱や過知覚膀胱の治療薬候補になりうる可能性を示した。
間質性膀胱炎患者の膀胱粘膜には、親侵害受容反応に関連する遺伝子発現が増強しており、これらの遺伝子およびその産物は治療標的やバイオマーカーの候補として期待しうることを示した。
下部尿路閉塞ラットにおいて、プリン作動性神経伝達を主体とする膀胱遠心性神経の機能低下が生じており、これを補うべく、N-type Ca(2+) channelの機能亢進を介したコリン作動性神経伝達の活性化が生じていることを明らかにした。
直腸の伸展刺激によって膀胱伸展受容求心性神経活動が活性化される機構が存在することを明らかにした。

  • Research Products

    (35 results)

All 2014 2013 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (22 results) (of which Invited: 3 results) Remarks (1 results)

  • [Journal Article] Changes in the Function and Expression of T-Type and N-Type Calcium Channels in the Rat Bladder after Bladder Outlet Obstruction.2014

    • Author(s)
      Igawa Y, Kumano S, Aizawa N, Saito Y, Ito H, Watanabe S, Takahashi N, Tajimi M, Nishimatsu H, Homma Y.
    • Journal Title

      J Urol.

      Volume: 191(4) Pages: 1159-1167

    • DOI

      10.1016/j.juro.2013.10.027.

    • Peer Reviewed
  • [Journal Article] Influence of urethane-anesthesia on the effect of resiniferatoxin treatment on bladder function in rats with spinal cord injury.2014

    • Author(s)
      Aizawa N, Ogawa S, Sugiyama R, Homma Y, Igawa Y
    • Journal Title

      Neurourol Urodyn.

      Volume: - Pages: -

    • DOI

      10.1002/nau.22549.

    • Peer Reviewed
  • [Journal Article] The role of transient receptor potential ankyrin 1 (TRPA1) channel in activation of single unit mechanosensitive bladder afferent activities in the rat.2014

    • Author(s)
      Minagawa T, Aizawa N, Igawa Y, Wyndaele JJ
    • Journal Title

      Neurourol Urodyn.

      Volume: - Pages: -

    • DOI

      10.1002/nau.22449.

    • Peer Reviewed
  • [Journal Article] Risk factors for septic shock in acute obstructive pyelonephritis requiring emergency drainage of the upper urinary tract.2014

    • Author(s)
      Kamei J, Nishimatsu H, Nakagawa T, Suzuki M, Fujimura T, Fukuhara H, Igawa Y, Kume H, Homma Y.
    • Journal Title

      Int Urol Nephrol.

      Volume: 46(3) Pages: 493-497

    • DOI

      10.1007/s11255-013-0545-5.

    • Peer Reviewed
  • [Journal Article] Phase III, randomised, double-blind, placebo-controlled study of the β(3) -adrenoceptor agonist mirabegron, 50mg once daily, in Japanese patients with overactive bladder.2014

    • Author(s)
      Yamaguchi O, Marui E, Kakizaki H, Homma Y, Igawa Y, Takeda M, Nishizawa O, Gotoh M, Yoshida M, Yokoyama O, Seki N, Ikeda Y, Ohkawa S.
    • Journal Title

      BJU Int.

      Volume: - Pages: -

    • DOI

      10.1111/bju.12649.

    • Peer Reviewed
  • [Journal Article] Effects of L-arginine, mirabegron, and oxybutynin on the primary bladder afferent nerve activities synchronized with reflexic, rhythmic bladder contractions in the rat.2014

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

      Neurourol Urodyn.

      Volume: - Pages: -

    • DOI

      10.1002/nau.22571.

    • Peer Reviewed
  • [Journal Article] Inhibition of peripheral fatty acid amide hydrolase depresses activities of bladder mechanosensitive nerve fibers of the rat.2014

    • Author(s)
      Aizawa N, Hedlund P, Füllhase C, Ito H, Homma Y, Igawa Y
    • Journal Title

      J Urol

      Volume: - Pages: -

    • DOI

      pii:S0022-5347(14)03334-5. doi: 10.1016/j.juro.2014.04.008.

    • Peer Reviewed
  • [Journal Article] Characteristics of lower urinary tract dysfunction and bladder afferent nerve properties in type 2 diabetic goto-kakizaki rats.2013

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

      J Urol.

      Volume: 189(4) Pages: 1580-1587

    • DOI

      10.1016/i.juro.2012.10.060.

    • Peer Reviewed
  • [Journal Article] Mechanisms of pelvic organ cross-talk: 2. Impact of colorectal distention on afferent nerve activity of the rat bladder.2013

    • Author(s)
      Minagawa T, Wyndaele M, Aizawa N, Igawa Y, Wyndaele JJ.
    • Journal Title

      J Urol.

      Volume: 190(3) Pages: 1123-1130.

    • DOI

      10.1016/j.juro.2013.03.079.

    • Peer Reviewed
  • [Journal Article] On- and post-treatment symptom relief by repeated instillations of heparin and alkalized lidocaine in interstitial cystitis.2013

    • Author(s)
      Nomiya A, Naruse T, Niimi A, Nishimatsu H, Kume H, Igawa Y, Homma Y.
    • Journal Title

      Int J Urol.

      Volume: 20(11) Pages: 1118-1122

    • DOI

      10.1111/iju.12120.

    • Peer Reviewed
  • [Journal Article] Increased mRNA expression of genes involved in pronociceptive inflammatory reactions in bladder tissue of interstitial cystitis.2013

    • Author(s)
      Homma Y, Nomiya A, Tagaya M, Oyama T, Takagaki K, Nishimatsu H, Igawa Y.
    • Journal Title

      J Urol.

      Volume: 190(5) Pages: 1925-1931

    • DOI

      pii: S0022-5347(13)04414-5. 10.1016/j.juro.2013.05.049.

    • Peer Reviewed
  • [Journal Article] Pharmacological profile of β3-adrenoceptor agonists in clinical development for the treatment of overactive bladder syndrome.2013

    • Author(s)
      Igawa Y, Michel MC
    • Journal Title

      Naunyn Schmiedebergs Arch Pharmacol.

      Volume: 386(3) Pages: 177-183

    • DOI

      10.1007/s00210-012-0824-1.

    • Peer Reviewed
  • [Presentation] 過活動膀胱に対する薬物療法の近未来予測2013

    • Author(s)
      井川靖彦
    • Organizer
      第65回西日本泌尿器科学会総会
    • Place of Presentation
      佐賀市
    • Year and Date
      2013-11-01
  • [Presentation] Age-related changes in detrusor properties and gene expression in the bladder and dorsal root ganglion of the rat and preventative effect of low caloric diet ageinst these changes2013

    • Author(s)
      Ito H, Aizawa N, Fujita Y, Kojima T, Ito M, Homma Y, Kubota Y, Igawa Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
    • Year and Date
      2013-08-28
  • [Presentation] Synergic supressive effect of the conbination therapy with silodosin and imidafenacin on non-voiding contractions in male rats with sub-acute bladder outlet obstruction2013

    • Author(s)
      Sugiyama R, Aizawa N, Homma Y, Igawa Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
    • Year and Date
      2013-08-28
  • [Presentation] Effect of silodosin, a selective alpha1A-adrenoceptor antagonist on primary bladder afferent activity and bladder microcontractions in rats2013

    • Author(s)
      Aizawa N, Homma Y, Igawa Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
    • Year and Date
      2013-08-28
  • [Presentation] How to study bladder afferent effect

    • Author(s)
      Igawa Y
    • Organizer
      TRUST Workshop
    • Place of Presentation
      Leiden, UK
    • Invited
  • [Presentation] Pharmacology of the bladder beta3-adrenoceptors

    • Author(s)
      Igawa Y
    • Organizer
      Young Urology Meeting
    • Place of Presentation
      Bristol, UK
    • Invited
  • [Presentation] Treatment targets for hypersensitive bladder disorders (overactive bladder and bladder pain syndromes)

    • Author(s)
      Igawa Y
    • Organizer
      Neuroscience seminar. University of Bristol
    • Place of Presentation
      Bristol, UK
    • Invited
  • [Presentation] Intermittent docetaxel therapy for castration resistant prostate cancer

    • Author(s)
      Kume H, Nagata M, Igawa Y, Nishimatsu H, Enomoto Y, Nakagawa T, Fujimura T, Suzuki M, Homma Y
    • Organizer
      AUA 2013 Annual Meeting(poster; Award for Best Poster)
    • Place of Presentation
      San Diego, USA
  • [Presentation] Changes in function and expression of N-type calcium channels in the rat bladder after bladder outlet obstruction

    • Author(s)
      Kumano S, Aizawa N, Homma Y, Igawa Y
    • Organizer
      AUA 2013 Annual Meeting(poster)
    • Place of Presentation
      San Diego, USA
  • [Presentation] Effects of mirabegron, a β3-adrenoceptor agonist, on the primary bladder afferent activity synchronized with rhythmic bladder contractions in rats in comparison with those of oxybutynin

    • Author(s)
      Aizawa N, Homma Y, Igawa Y
    • Organizer
      AUA 2013 Annual Meeting(poster)
    • Place of Presentation
      San Diego, USA
  • [Presentation] Inhibition of fatty acid amide hydrolase suppresses mechanosensitive primary bladder afferent activies in the rat

    • Author(s)
      Aizawa N, Fullhase C, Hedlund P, Homma Y, Igawa Y
    • Organizer
      Young Urology Meeting
    • Place of Presentation
      Bristol, UK
  • [Presentation] Urothelium inhibits β-adrenoceptor-mediated relaxation in human detrusor smooth muscle via camp- and P2 purinoceptor-dependent mechanism

    • Author(s)
      Igawa Y, Kumano S, Aizawa N, Ito H, Sugiyama R, Homma Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
  • [Presentation] Effects of TRPM8 channels' inhibition on concious cystometry and single-unit mechanosensitive bladder afferent activities in novel ex vivo model of the rat

    • Author(s)
      Ito H, Aizawa N, Sugiyama R, Watanabe S, Takahashi N, Tajimi M, Homma Y, Kubota Y, Igawa Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
  • [Presentation] Inhibitory effect of retigabine, a Kv7 channel activator, on rhythmic bladder contractions and mechanosensitive primary bladder afferent activities in rats

    • Author(s)
      Aizawa N, Wakamatsu D, Matsuya H, Homma Y, Igawa Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
  • [Presentation] Socioeconomical effect of bladder functional assessment-based optimal prompted voiding care for institutionalized elderly with urinary incontinence in Japan

    • Author(s)
      Suzuki M, Igawa Y, Fujimura T, Fukuhara H, Nishimatsu H, Kume H, Koyama Y, Iguchi Y, Saito T, Homma Y
    • Organizer
      43rd Annual Meeting of the ICS 2013
    • Place of Presentation
      Barcelona, Spain
  • [Presentation] Effects of TRPM8 channels’ inhibition on conscious cystometry and single-unit mechanosensitive bladder afferent activities in novel EX VIVO model of the rat

    • Author(s)
      Ito H, Aizawa N, Sugiyama R, Watanabe S, Takahashi N, Tajimi M, Homma Y, Kubota Y, Igawa Y
    • Organizer
      8th Pan-pacific Continence Society meeting 2013
    • Place of Presentation
      Busan, Korea
  • [Presentation] Selective inhibitory effect of imidafenacin, a novel anticholinergic agent, on capsaicin-sensitive C-fibers among the primary bladder mechanosensitive afferent nerves in the rat

    • Author(s)
      Aizawa N, Homma Y, Igawa Y
    • Organizer
      8th Pan-pacific Continence Society meeting 2013
    • Place of Presentation
      Busan, Korea
  • [Presentation] Synergic suppressive effect of the combination therapy with silodosin and imidafenacin on non-voiding bladder contractions in male rats with sub-acute bladder outlet obstruction

    • Author(s)
      Sugiyama R, Aizawa N, Homma Y, Igawa Y
    • Organizer
      8th Pan-pacific Continence Society meeting 2013
    • Place of Presentation
      Busan, Korea
  • [Presentation] コンチネンス医療における多職種連携による集学的マネジメント

    • Author(s)
      井川靖彦
    • Organizer
      第12回日本医療マネジメント学会長野支部学術集会
    • Place of Presentation
      松本市
  • [Presentation] 排尿学基礎研究のすすめ

    • Author(s)
      井川靖彦
    • Organizer
      筑波大学腎泌尿器外科2013年前期リサーチミーティング
    • Place of Presentation
      つくば市
  • [Presentation] 小児膀胱蓄尿機能障害に対する薬物療法戦略

    • Author(s)
      井川靖彦
    • Organizer
      第14回大阪小児泌尿器疾患検討会
    • Place of Presentation
      大阪市
  • [Presentation] 治療標的としての膀胱求心路を科学する

    • Author(s)
      井川靖彦
    • Organizer
      第20回日本排尿機能学会 ランチョンセミナー7
    • Place of Presentation
      静岡市
  • [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/

URL: 

Published: 2015-05-28  

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