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Novel physiological function of microglia: Possible involvement of microglia in the regulation of GnRH neural function

Research Project

Project/Area Number 22500298
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Neuroscience in general
Research InstitutionSt. Marianna University School of Medicine

Principal Investigator

AKEMA Tatsuo  聖マリアンナ医科大学, 医学部, 教授 (60128585)

Co-Investigator(Kenkyū-buntansha) FUJIOKA Hitomi  聖マリアンナ医科大学, 医学部, 講師 (50410064)
KAKEHASHI Chiaki  聖マリアンナ医科大学, 医学部, 研究技術 (80535683)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
KeywordsGnRHニューロン / ミクログリア / シクロオキシゲナーゼ / プロスタグランジン / GnRH / ストレス / COX-1 / ゴナドトロピン放出ホルモン
Research Abstract

The present studies were aimed to examine whether microglia may be involved in regulation of functions of GnRH neurons which govern reproductive functions. We revealed that cyclooxygenase (COX) -1 immunoreactivity in the vicinity of GnRH neurons was almost entirely localized in microglia in the preoptic area, and prostaglandin E2, which is one of the products catalyzed by COX, modulated electrophysiological properties of GnRH neurons in an estrus cycle-dependent manner. We also found pretreatment of an inhibitor of microglial activation reversed suppression of gonadotropin secretion by inflammatory stress. These results suggest that microglia may be involved in regulation of GnRH neural function in both physiological and inflammatory conditions.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (18 results)

All 2013 2012 2011 2010 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (9 results) Book (2 results) Remarks (2 results)

  • [Journal Article] Immunohistochemical evidence for the relationship between microglia and GnRH neurons in the preoptic area of ovariectomized rats with and without steroid replacement2013

    • Author(s)
      Fujioka H, Kakehashi C, Funabashi T, Akema T.
    • Journal Title

      Endocrine Journal

      Volume: 60 Issue: 2 Pages: 191-196

    • DOI

      10.1507/endocrj.EJ12-0280

    • NAID

      10031156741

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2012 Annual Research Report 2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Lipopolysaccharide acutely inhibits proliferation of neural precursor cells in the dentate gyrus in adult rats.2010

    • Author(s)
      Fujioka H, Akema T.
    • Journal Title

      Brain Research

      Volume: 1352 Pages: 35-42

    • DOI

      10.1016/j.brainres.2010.07.032

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Progesterone receptor immunoreactivity in the brains of ovariectomized aged rats.2010

    • Author(s)
      Furuta M, Fukushima A, Chiba S, Sano A, Akema T, Kimura F, Funabashi T.
    • Journal Title

      Neuroreport

      Volume: 21 Issue: 11 Pages: 777-81

    • DOI

      10.1097/wnr.0b013e32833c5b6f

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Lipopolysaccharide acutely inhibits proliferation of neural precursor cells in the dentate gyrus in adult rats2010

    • Author(s)
      藤岡仁美
    • Journal Title

      Brain Research

      Volume: 1352 Pages: 35-42

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Progesterone receptor immunoreactivity in the brains of ovariectomized agedrats2010

    • Author(s)
      古田都
    • Journal Title

      Neuroreport

      Volume: 21 Pages: 777-781

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] GnRHニューロンの制御におけるミクログリアの関与(Possible involvement of microglia in regulation of GnRH neural functions)2013

    • Author(s)
      藤岡仁美、舩橋利也、明間立雄
    • Organizer
      第90回日本生理学会大会(学会連携シンポジウム)
    • Place of Presentation
      東京
    • Related Report
      2012 Final Research Report
  • [Presentation] Possible involvement of microglia in regulation of GnRH neural functions.2013

    • Author(s)
      藤岡 仁美
    • Organizer
      第90回 日本生理学会(学会提携シンポジウム)
    • Place of Presentation
      タワーホール船堀(東京l)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 雌ラットGnRHニューロン周囲のシクロオキシゲナーゼ-1の細胞局在と性ステロイドの影響2012

    • Author(s)
      藤岡仁美
    • Organizer
      日本生理学会
    • Place of Presentation
      信州大学(長野県)
    • Year and Date
      2012-03-31
    • Related Report
      2011 Annual Research Report
  • [Presentation] 雌ラットGnRHニューロン周囲のシクロオキシゲナーゼ-1の細胞局在と性ステロイドの影響(Cellular localization of cyclooxygenase-1 and ovarian steroid effects on its expression in the vicinity of gonadotropin-releasing hormone neurons in the preoptic area of female rats)2012

    • Author(s)
      藤岡仁美、掛橋千彰、舩橋利也、明間立雄
    • Organizer
      第89回日本生理学会大会
    • Place of Presentation
      松本
    • Related Report
      2012 Final Research Report
  • [Presentation] 雌ラット・マウス・モルモットの視索前野におけるシクロオキシゲナーゼ-1の分布と細胞局在の検討2011

    • Author(s)
      藤岡仁美
    • Organizer
      日本神経科学大会
    • Place of Presentation
      パシフィコ横浜(神奈川県)
    • Year and Date
      2011-09-16
    • Related Report
      2011 Annual Research Report
  • [Presentation] 雌ラット・マウス・モルモットの視索前野におけるシクロオキシゲナーゼ-1の分布と細胞局在の検討(Distribution and cellular localization of cyclooxygenase-1 in the preoptic area of normal female rats, mice and guinea pigs)2011

    • Author(s)
      藤岡仁美、掛橋千彰、明間立雄
    • Organizer
      第34回日本神経科学大会
    • Place of Presentation
      横浜
    • Related Report
      2012 Final Research Report
  • [Presentation] 雌ラット・マウス・モルモットの視索前野におけるシクロオキシゲナーゼ"1の細胞局在とGnRHニューロンとの解剖学的関係(Cellular localization of cyclooxygenase-1 and its anatomical relationship to gonadotropin-releasing hormone neurons in the preoptic area of normal female rats, mice and guinea pigs)2011

    • Author(s)
      藤岡仁美、掛橋千彰、明間立雄
    • Organizer
      第88回日本生理学会大会、第116回日本解剖学会全国学術集会C合同大会
    • Place of Presentation
      東日本大震災により誌上開催
    • Related Report
      2012 Final Research Report
  • [Presentation] 雌ラット・マウス・モルモットの視索前野におけるシクロオキシゲナーゼ-1の細胞局在とGnRHニューロンとの解剖学的関係2011

    • Author(s)
      藤岡仁美
    • Organizer
      第88回日本生理学会大会
    • Place of Presentation
      横浜(震災のため誌上開催)
    • Related Report
      2010 Annual Research Report
  • [Presentation] 成体ラット海馬歯状回における神経新生に対する細菌性内毒素の急性効果(Proliferation of neural precursor cells in the dentate gyrus is acutely inhibited by lipopolysaccharide in adult rats.)2010

    • Author(s)
      藤岡仁美、明間立雄
    • Organizer
      第33回日本神経科学大会、第53回日本神経化学会大会および第20回日本神経回路学会大会合同大会
    • Place of Presentation
      神戸
    • Related Report
      2012 Final Research Report
  • [Book] Gonadotropin Releasing Hormone (GnRH): Production, Structure and Function2013

    • Author(s)
      藤岡 仁美
    • Publisher
      Nova Scientific Press, Inc
    • Related Report
      2012 Annual Research Report
  • [Book] Morphological evidence for involvement of microglia in the regulation of GnRH neurons. In: Sills ES (ed)

    • Author(s)
      Fujioka H, Funabashi T, Akema T.
    • Publisher
      Gonadotropin Releasing Hormone (GnRH): Production, Structure and Function. Nova Scientific Press, Inc (New York), 2013.
    • Related Report
      2012 Final Research Report
  • [Remarks]

    • URL

      http://www.marianna-u.ac.jp/physiology/index.html

    • Related Report
      2012 Final Research Report
  • [Remarks] 聖マリアンナ医科大学・生理学教室

    • URL

      http://www.marianna-u.ac.jp/physiology/office/index.html

    • Related Report
      2012 Annual Research Report

URL: 

Published: 2010-08-23   Modified: 2019-07-29  

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