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Crosstalk from energy regulating system to female reproductive system

Research Project

Project/Area Number 14571566
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Obstetrics and gynecology
Research InstitutionThe University of Tokushima

Principal Investigator

MATSUZAKI Toshiya  The University of Tokushima, Graduate School, Institute of Health Biosciences, Assistant Professor, 大学院・ヘルスバイオサイエンス研究部, 講師 (70294692)

Co-Investigator(Kenkyū-buntansha) YASUI Toshiyuki  Tokushima University, Hospital, Associate Professor, 医学部・歯学部附属病院, 助教授 (40230205)
IRAHARA Minoru  The University of Tokushima, Institute of Health Biosciences, Professor, 大学院・ヘルスバイオサイエンス研究部, 教授 (20160070)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2004: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2003: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2002: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsorexinergic peptides / orexin / ghrelin / GnRH / LH / leptin / reptin receptor / 摂食調節因子 / βエンドルフィン
Research Abstract

Reproductive system is affected by energy regulating system. Starvation weight loss easilys amenorrhea in women. Recently, several factors which regulate appetite are discovered. We studied crosstalk of these factors toward female reproductive system. Our findings are as follows.
1.Acute cerebroventricular injection of Ghrelin suppressed pulsatile LH secretion in ovariectomized rat, and this phenomenon was cancelled by co-administration of naroxon. Ghrelin suppressed GnRH srelease via beta-endorphine.
2.Acute cerebroventricular injection of Orexin-A suppressed pulsatile LH secretion, and this phenomenon was cancelled by co-administration of naroxon or NPY antibody. Orexin-A suppressed GnRH srelease via beta-endorphine and NPY.
Orexin-A suppressed pulsatile GnRH secretion via beta-endorphine and NPY in ovariectomized rat.
3.Chronic intracerevro-ventricullar injection of Ghrelin or Orexin-A accelerated food intake and weight gain in mature female rats, however estrus cycle was not influenced … More at all. Hypothalamic orexinergic peptide such as ghrelin and orexin-A seemed not to have sufficient inhibitory action to induce anovulation. In weight loss and amenorrheic situation, many signals which control energy homeostasis including hypothalamic orexinergic peptides and peripheral originated circulating leptin would be integrated and work together to stop ovulation.
4.Leptin stimulated gonadotropin secretion in juvenile rat pituitary cells, and suitable leptin concentration for this stimulatory effect shifed in accordance with development ; Juvenile rat pituitary was more sensitive to leptin than latter ages. Messenger RNA of functional leptin receptor(OB-Rb) was highly expressed at juvenile age compared with latter ages in female rats pituitary. On the other hand, serum leptin concentration increased though pubertal development in contrast to OB-Rb mRNA expression in the pituitary. In conclusion, juvenile female rat pituitary might be sensitive to the increase of serum leptin concentration preparing puberty. Less

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (16 results)

All 2004 2003 2002 Other

All Journal Article (8 results) Publications (8 results)

  • [Journal Article] Serum estradiol concentration as measured by HPLC-RIA and bone mineral density in post menopausal women during hormone replacement therapy.2004

    • Author(s)
      Toshiyuki Yasui
    • Journal Title

      Horm Res 61・3

      Pages: 117-125

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Serum estradiol concentration as measured by HPLC-RIA and bone mineral density in postmenopausal women during hormone replacement therapy.2004

    • Author(s)
      Toshiyuki Yasui
    • Journal Title

      Horm Res 61・3

      Pages: 117-125

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] The herbal medicine Unkei-to stimulates the secretion of a cytokine-induced neutrophil chemoattractant, CINC/gro, in the rat ovarian cell culture.2003

    • Author(s)
      Toshiyuki Yasui
    • Journal Title

      Am J Reprod Immunol 49・1

      Pages: 14-20

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Stimulatory effect of the herbal medicine Keishi-bukuryo-gan on a cytokine-induced neutrophil chemoattractant, in rat ovarian cell culture.2003

    • Author(s)
      Toshiyuki Yasui
    • Journal Title

      Am J Reprod Immunol 51・1

      Pages: 90-97

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Serum leptin levels in women throughout life ; Relationship to body mass index and serum estradiol levels.2003

    • Author(s)
      Masayo Yamada
    • Journal Title

      Jpn J Reprod Endocrinol 55・1

      Pages: 55-60

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Stimulatory effect of the herbal medicine Keishi-bukuryo-gan on a cytokine-induced neutrophil chemoattractant, in rat ovarian cell culture.2003

    • Author(s)
      Toshiyuki Yasui
    • Journal Title

      Am J Reprod Immunol 50・1

      Pages: 90-97

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Effects of leptin on gonadotropin secretion in juvenile female rat pituitary cells.2002

    • Author(s)
      Michiko Tezuka
    • Journal Title

      European Journal of Endocrinology 146・2

      Pages: 261-266

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Serum osteoprotegerin/osteoclastogenesis-inhibitory factor during pregnancy and lactation and the relationship with calcium-regulating hormones and bone turnover markers.2002

    • Author(s)
      Hirokazu Uemura
    • Journal Title

      Journal of Endocrinology 33・5

      Pages: 353-359

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Publications] Michiko Tezuka: "Effects of leptin on gonadotropin secretion in juvenile female rat pituitary cells"European Journal of Endocrinology. 146・2. 261-266 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Hirokazu Uemura: "Serum osteoprotegerin/osteoclastogenesis-inhibitory factor during pregnancy and lactation and the relationship with calcium-regulating hormones and bone turnover markers"Journal of Endocrinology. 33・5. 353-359 (2002)

    • Related Report
      2003 Annual Research Report
  • [Publications] Toshiyuki Yasui: "The herbal medicine Unkei-to stimulates the secretion of a cytokine-induced neutrophil chemoattractant, CINC/gro, in the rat ovarian cell culture"Am J Reprod Immunol. 49・1. 14-20 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Toshiyuki Yasui: "Stimulatory effect of the herbal medicine Keishi-bukuryo-gan on a cytokine-induced neutrophil chemoattractant, in rat ovarian cell culture"Am J Reprod Immunol. 50・1. 90-97 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Masayo Yamada: "Serum leptin levels in women throughout life ; Relationship to body mass index and serum estradiol levels"Jpn J Reprod Endocrinol. 55・1. 55-60 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Toshiyuki Yasui: "Serum estradiol concentration as measured by HPLC-RIA and bone mineral density in postmenopausal women during hormone replacement therapy"Horm Res. 61・3. 117-125 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] Michiko Tezuka: "Effects of leptin on gonadotropin secretion in juvenile female rat pituitary cells"European Journal of Endocrinology. 146・2. 261-266 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hirokazu Uemura: "Serum osteoprotegerin/osteoclastogenesis-inhibitory factor during pregnancy and lactation and the relationship with calcium-regulating hormones and bone turnover markers"Journal of Endocrinology. 174・2. 353-359 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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