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2011 Fiscal Year Final Research Report

Central nervous system controlling drinking behavior in seawater eels : from hormone reception to esophageal muscle contraction

Research Project

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Project/Area Number 21570078
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Animal physiology/Animal behavior
Research InstitutionThe University of Tokyo

Principal Investigator

ANDO Masaaki  東京大学, 大気海洋研究所, 特任研究員 (10100976)

Project Period (FY) 2009 – 2011
Keywords飲水調節ホルモン / Area postrema(AP) / 神経活動 / Glossopharyngeal-vagal motor complex(GVC) / 飲水行動
Research Abstract

Neurons in the area postrema(AP, especially at AP1 region) of the medulla oblongata of the eel was excited by angiotensin II(ANG II), and the ANG II-induced AP1 excitation inhibited the neuronal activity of the glossopharyngeal-vagal motor complex(GVC, especially at GVC1 region). On the other hand, atrial natriuretic peptide(ANP) inhibited the ANG II-induced AP1 excitation. Similar interaction between ANG II and ANP has been reported in the subfornical organ of the rat, therefore it is likely that these dipsogenic(ANG II) and antidipsogenic(ANP) hormones act on the AP1 in the eel. ANG II may facilitate the drinking rate by exciting the AP1 activity, which inhibits the GVC1 activity, which relaxes the upper esophageal sphincter muscle, thus enhance the water intake into the esophagus.

  • Research Products

    (6 results)

All 2011 2010

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results) Book (2 results)

  • [Journal Article] Central regulation of the pharyngeal and upper esophageal reflexes during swallowing in the Japanese eel2010

    • Author(s)
      Mukuda Takao and Ando Masaaki
    • Journal Title

      J. Comp. Physiol

      Volume: A196 Pages: 111-122

    • DOI

      DOI:10.1007/s00359-009-0498-4

    • Peer Reviewed
  • [Presentation] 海水ウナギの延髄最後野ニューロンの飲水調節ホルモンに対する応答2011

    • Author(s)
      安藤正昭、竹井祥郎
    • Organizer
      第36回日本比較内分泌学会大会
    • Place of Presentation
      都道府県会館(東京都)
    • Year and Date
      20111123-24
  • [Presentation] 海水ウナギの腸における塩と水の輸送に及ぼすグアニリンの作用2011

    • Author(s)
      安藤正昭、竹井祥郎
    • Organizer
      第82回日本動物学会大会
    • Place of Presentation
      旭川大雪アリーナ(北海道)
    • Year and Date
      2011-09-22
  • [Presentation] Guanylin enhances Cl-permeability across the intestine of the eel acclimated to sea water2011

    • Author(s)
      Ando Masaaki and Takei Yoshio
    • Organizer
      第8回国際比較生理生化学会議(ICCPB2011Japan)
    • Place of Presentation
      名古屋国際会議場(愛知県)
    • Year and Date
      2011-06-03
  • [Book] EelPhysiology(Chapter4 : Intestinalabsorptionofsaltsandwater)2011

    • Author(s)
      AndoMasaaki & TakeiYoshio
    • Publisher
      Science Publishers
  • [Book] EelPhysiology(Chapter2 : Regulationofdrinking)2011

    • Author(s)
      Nobatashigenori & AndoMasaaki
    • Publisher
      Science Publishers

URL: 

Published: 2013-07-31  

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