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2009 Fiscal Year Final Research Report

Activation of sensory neurons reduces ischemia/ reperfusion-induced acute renal injury in rats

Research Project

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Project/Area Number 19592092
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Emergency medicine
Research InstitutionOita University

Principal Investigator

NOGUCHI Takayuki  Oita University, 医学部, 教授 (90156183)

Co-Investigator(Kenkyū-buntansha) KUDO Kyosuke  大分大学, 医学部, 助教 (80336271)
Project Period (FY) 2007 – 2009
Keywords腎虚血再潅流傷害 / CGRP / PGI2 / VR-1 / アイロプロスト
Research Abstract

PGI1 produced by endothelial cells improves ischemia/reperfusion-induced acute renal injury by inhibiting leukocyte activation in rat. However, the underlying mechanism of increased PGI2 production is not fully elucidated. Activation of sensory neurons increases endothelial PGI2 production byincreasing calcitonin gene-related peptide (CGRP) in rat hepatic ischemia or reperfusion. We examined here whether activation of sensory neurons increases PGI2 endothelial production, thereby reducing ischemia/reperfusion-induced acute renal injury. Renal tissue level of CGRP and 6-keto-PGF1α a stable metabolite of PGI2, increased after renal ischemia/reperfusion, peaking at 1h after reperfusion. Overexpression of CGRP was also noted at 1 h after reperfusion. Increases in renal tissue levels of 6-keto-PGF1α at 1h after reperfusion were significantly inhibited by pretreatment with capsazepin, CGRP(8-37), indomethacin. Pretreatment with capsazepin, CGRP (8-37), indomethacin, and denervation of primary sensory nerves significantly increased blood urea nitrogen and serum creatinine levels, renal vascular permiabilit6y, renal tissue levels of MPO activity, CINC, and TNF-α, and decreased renal tissue blood flow. However, pretreatment with CGRP significantly improved these changes. Our result suggests activation of sensory neurons in the pathologic process of ischemia/reperfusion-induced acute renal injury. Such activation reduces acute renal injury attenuating inflammatory responses through enhanced endothelial PGEI2 production.

  • Research Products

    (5 results)

All 2010 2009 2008

All Journal Article (4 results) (of which Peer Reviewed: 3 results) Presentation (1 results)

  • [Journal Article] Cepharantine exerts anti-inflammatory effects via NF-kB inhibition in a rat systemic inflammation.2010

    • Author(s)
      Kudo K, Noguchi T, et al
    • Journal Title

      J Surg Res

    • Peer Reviewed
  • [Journal Article] Activation of sensory neurons reduces ischemia/reperfusion-induced acute renal injury in rats.2009

    • Author(s)
      Mizutani A, Kudo K, Nogucchi T, et al
    • Journal Title

      Anesthesiology 110

      Pages: 361-369

    • Peer Reviewed
  • [Journal Article] CGRPを介したPGI2産生による炎症性応答の軽減.2009

    • Author(s)
      水谷明男, 野口隆之
    • Journal Title

      生命の科学 60

      Pages: 492-493

  • [Journal Article] Danaparoid sodium prevents cerulein-induced acute pancreatitis in rats.2009

    • Author(s)
      Hagiwara S, Noguchi T, at al
    • Journal Title

      Shock 32(1)

      Pages: 94-99

    • Peer Reviewed
  • [Presentation] Involvement of sensory neuron to ischemia/reperfusion-induced acute renal injury in rats.2008

    • Organizer
      International anesthesia research society 82th clinical and scientific congress
    • Place of Presentation
      San Francisco, CA, USA
    • Year and Date
      2008-03-31

URL: 

Published: 2011-06-18   Modified: 2016-04-21  

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