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A study on the development of fetal behavior and central nervous system

Research Project

Project/Area Number 01480389
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Obstetrics and gynecology
Research InstitutionUniversity of Tokyo

Principal Investigator

KUWABARA Yoshinori  Univ.of Tokyo, Facul.of Med. (Hosp.), Associate Professor, 医学部(病), 助教授 (20010324)

Co-Investigator(Kenkyū-buntansha) UNNO Nobuya  Univ.of Tokyo, Facul.of Med. (Hosp.), Registrar, 医学部(病), 助手 (90193979)
KOZUMA Shiro  Univ.of Tokyo, Facul.of Med. (Hosp.), Registrar, 医学部(病), 助手 (30143457)
OKAI Takasi  Univ.of Tokyo, Facul.of Med. (Hosp.), Assistant Professor, 医学部(病), 講師 (40126016)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1991: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1990: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1989: ¥2,600,000 (Direct Cost: ¥2,600,000)
Keywordsartificial placent / ECMO / fetal goat / fetal behavior / eye movements / central vervous system / 胎児中枢神経系機能 / 胎児生理 / 睡眠覚醒 / behavioral state / 子宮外胎仔保育 / 子宮外胎仔保育法 / 胎児中枢神経系
Research Abstract

We developed a system of extrauterine incubation of a goat fetus, in which the fetus in surrounded by artificial amniotic fluid and connected to the circuit with an ECMO (extracorporeal membrane oxygenator) by the umbilical arteries and veins.
The mean duration of the incubation was 83 hours and 48 minutes with a recent improvement. Tne longest one was 143 h.and 48 min.in this series. Slowly progress of circulatory depression and systemic body edema were thought to be the main cause of fetal death.
EEG,EOG,intratracheal presuure, EMG of nucal and thigh muscle were monitored continuously. Four categories of behavioral states were defined on the basis of the findings of these monitoring and the fetal movements observed with naked eyes.
The effects of PGE_2, and PGD_2, which are known as regulators of sleep-wakefulness cycle, on behavioral states defined above were investigated to clarify the meanings of these behavioral states. As a result of these experiments, it was suggested that four categories of behavioral states in extra-uterine fetal goats were deep Non-REM sleep, shallow Non-REM sleep, REM sleep and wakefulness.
The detail is shown in the text of the report.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 海野信也、桑原慶紀他: "人工子宮の開発:A-V ECMOによる子宮外胎仔保育における最適臍帯血流量に関する検討" 今日の人工臓器. 2(3). 197-204 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 海野信也、桑原慶紀他: "臍帯を用いたA-V ECMOによる子宮外胎仔保育" 人工臓器. 14(Suppl 3). 268-269 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 海野信也、桑原慶紀他: "人工子宮の開発:A-V ECMOによる子宮外胎仔保育における酸素消費に関する検討" 胎児診断と治療. 5(3-4). 189-195 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] N.Unno, Y.Kuwabara, et al.: "Development of an Artificial Placenta : Optimal Extracorporeal Flow Blood Flow in Goat Fetuses during Extrauterine Incubation with Umbilical Arterio-venous Extracorporeal Membrane Oxygenation." Artificial Organs Today. 2 (3). 197-204 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] N.Unno, Y.Kuwabara, et al.: "THE EXTRAUTERINE INCUBATION OF GOAT FETUSES USING UMBLICAI,ARTERIO-VENOUS ECMO." Artificial Organs. 14 (Suppl 3). 268-269 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] N.Unno, Y.Kuwabara, et al.: "Development of artificial Placenta : Oxygen metabolism of isolated goat fetuses with umbilical arterio-venous estracorporeal membrane oxygenation." Fetal Diagnosis and Therapy. 5 (3-4). 189-195 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 海野 信也,桑原 慶紀 他: "〓帯動静脈AーV ECMOによる子宮外保育下ヤギ胎〓のガス交換動態" 人工臓器. 20. 1233-1238 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 上妻 志郎: "胎児行動における中枢神経系制御機構の発達過程に関する総合的解析" 日本産科婦人科学会雑誌. 43. 834-842 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 海野 信也,桑原 慶紀,水野 正彦: "人工子宮開発の現階段" BIO INDUSTRY. 7. 322-331 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 海野 信也,桑原 慶紀,篠塚 憲男,上妻 志郎,岡井 崇 水野 正彦,桑名 克之: "〓帯動静脈AーV ECMOによる子宮外保育下ヤギ胎仔のガス交換動態" 人工臓器. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] Yoshinori kuwabara,Takashi Okai,Shiro Kozuma,Nobuya Unno: "Artificial Placenta:Long-Term Extrauterine Incubation of Isolated Goat Fetuses" Artificial Organs. 13(6). P527-531 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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