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Molecular mechanisms of sensory svstem from urinary bladder

Research Project

Project/Area Number 08044239
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research Field 神経・脳内生理学
Research InstitutionAkita University

Principal Investigator

KAWATANI Masahito  Akita University School of Medicine, Department of Physiology, Professor and Chairman., 医学部, 教授 (00177700)

Co-Investigator(Kenkyū-buntansha) MIURA Akire  Akita University School of Medicine, Department of Physiology, Instructor, 医学部, 助手 (10239171)
MORRISON John F.B  University of Leeds School of Medicine, Department of Physiology, Professor, 医学部, 教授
DE GROAT William C  University of Pittsburgh School of Medicine, Department of Pharmacology, Profess, 医学部, 教授
西澤 理  信州大学, 医学部, 教授 (60091815)
JOHN F.B Mor  英リーズ大学, 医学部, 教授
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥8,300,000 (Direct Cost: ¥8,300,000)
Fiscal Year 1997: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 1996: ¥4,700,000 (Direct Cost: ¥4,700,000)
Keywordsurinary bladder / phasic neuron / interleukin 1beta / prostaglandin / spinal cord / parasympathetic preganglionic neurons / サイレント線維 / 感覚線維 / 神経伝達物質 / CRF / グルタメイト
Research Abstract

Autonomic control of urinary bladder has been studied. Sensory nerve ending was activated primarily by distention of the bladder wall. Chemical irritation using acetic acid and inflammation related substance interluikin 1beta (IL1beta) changed the threshold for micturition reflex by activating the high threshold fibers. Prostaglandin E (PGE) activated silent C fiber unit and changed threshold of high threshold fiber. Activity was not changed in low threshold fiber. The effect of IL1 beta and PGE were abolished by indomethacin. High threshold fibers which is not used in normal micturition reflex was activated inflammation related substances and increased the frequency of micturition and reduced the capacity of the urinary bladder.
Parasympathetic preganglionic neurons (PGN) were divided into tonic PGN and phasic PGN on the basis of firing properties during prolonged (300ms) depolarizing current pulses. 4-Aminopyridine (4-AP) reduced the threshold for spike activation in tonic and phasic PGN.4-AP unmasked tonic firing in phasic PGN and increased firing frequency in tonic PGN.These data indicated that two types of PGN were present and may have different innervation to the targets in the pelvic viscera.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 河谷 正仁: "仙髄における骨盤神経求心性神経終末とその伝達物質-脊髄と排尿機能-" 排尿障害プラクティス. 4. 365-370 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 河谷 正仁: "仙髄の排尿中枢とオヌフ核-脊髄と排尿機能-" 排尿障害プラクティス. 5. 192-198 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Miura A Kawatani M: "Effects of diode laser irradiation on sensory ganglion cells from the cat." Pain Res. 11. 175-183 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kawatani M,Suzuki T,de Groat WC: "Corticotropin releasing factor like immuroreactivity in afferent projections to the sacral spinal cord of the cat." Auton Nerve Syst. 61. 218-226 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Miura A,Kawatani M,Araki I, de Groat WC.: "Electrophysiological properties of largeand small lumbosacral preganglionic neuronsin the neonatal rat spinal cord." J Physiol. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 寺邑 敏彦,河谷 正仁 (他): "会陰部刺激による排尿反射抑制機構の脊髄損傷後の変化の検討" 日本災害雑誌. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kawatani M.: "Pelvic nerve afferent and its neurotransmitter." Voiding Disorders Digest. 4. 365-370 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kawatani M.: "Sacral parasympathetic preganglionic neuron and Onuf's nucleus" Voiding Disorders Digest. 5. 192-198 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Miura A,Kawatani K.: "Effects of diode laser irradiation on sensory ganglioncells from the cat." Pain Res. 11. 175-183 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kawatani M,Suzuki T,de Groat WC.: "Corticotropin releasing factor-like immuroreactivity in afferent projections to the sacral spinalcord of the cat." Auton Nerve Syst.61. 218-226 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Miura A,Kawatani M,Araki I,de Groat WC.: "Electrophysiological properties of largeand smallJ lumbosacral preganglionic neurons in the neonatal rat spinal cord." J.Physiol. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Teramura T,Fukuda T,Yuri Y,Fujieda N,Tsuchida M,Sato T,Imaizumi M,Kawatani M.: "Spinal transection unmasked pudendal afferent excitatory input bladder contraction of the cat." Jap J Traumatology & Occupational Med. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kawatani,M.Suzuki,T.and de Groat,WC: "Corticotropin releasing factor-like immuroreactivity in afferent projections to the sacral spinal cord of the cat." Journal of the Autonomic Nervous System. 61. 218-226 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Miura,M.Kawatani,M.: "Effects of diode laser irradiation on sensory ganglion cells from the cat." Pain Research. 11. 175-183 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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