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Changes in the Cardiovascular Regulatory Mechanism due to Gravitational Variations and Confinement

Planned Research

Project Area"LIVING IN SPACE" - Integral Understanding of life-regulation mechanism from "SPACE"
Project/Area Number 15H05939
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Complex systems
Research InstitutionNihon University

Principal Investigator

IWASAKI Kenichi  日本大学, 医学部, 教授 (80287630)

Co-Investigator(Kenkyū-buntansha) 柳田 亮  日本大学, 医学部, 兼任講師 (00644741)
大平 宇志  国立研究開発法人宇宙航空研究開発機構, 有人宇宙技術部門, 研究開発員 (40633532)
小川 洋二郎  日本大学, 医学部, 准教授 (60434073)
田子 智晴  日本大学, 医学部, 助手 (70780229)
上田 要  日本大学, 医学部, 助手 (00598964)
青木 健  日本大学, 医学部, 助教 (60332938)
篠島 亜里  日本大学, 医学部, 助教 (60647189)
Project Period (FY) 2015-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥79,820,000 (Direct Cost: ¥61,400,000、Indirect Cost: ¥18,420,000)
Fiscal Year 2019: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
Fiscal Year 2018: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
Fiscal Year 2017: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
Fiscal Year 2016: ¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
Fiscal Year 2015: ¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000)
Keywords宇宙医学 / 宇宙飛行 / 循環調節 / 脳血流 / 微小重力 / 過重力 / 頭蓋内圧 / 血圧 / 衛生学 / 生理学 / 衛生 / 宇宙科学
Outline of Final Research Achievements

Human cardiovascular system has been known to be altered by several factors, such as microgravity, stress response to confinement during space flight, and hypergravity with a launch and a return to the Earth. We have investigated the effects of these factors on cardiovascular system, while mainly paying attention to brain circulation. As results of ground-based simulated experiments, we have found that an exposure to hypergravity, psychological stress due to confinement, or a combination of hypercapnia and head-ward fluid shift has a potential to affect brain circulation and intracranial pressure.
In addition, an experiment measuring cerebral blood flow on International Space Station (ISS) astronauts has revealed that cerebral blood flow velocity increased after the several months spaceflight in spite of unchanged arterial blood pressure, associated with decreases in hemoglobin concentration. Furthermore, we have found that estimated intracranial pressure changed after the spaceflight.

Academic Significance and Societal Importance of the Research Achievements

宇宙飛行により種々の人体臓器が変化すると分かっており、近年特に頭の臓器(脳や眼球)が形態を含め変化することが報告され注目されている。その変化の因子や病態を明らかにすることは宇宙医学分野などで科学的に重要なだけでなく、今後の月・火星探査等に際し、その知見を基に予防手段を講じ宇宙飛行士の健康を維持しミッションを成功させるためにも重要である。つまり今回判明した脳循環に影響を与える環境因子を制御することが、今後の宇宙開発に役立つと考えられる。また、閉鎖環境が循環系に与える影響に関しては、地上における災害時の孤立や避難、新型コロナウイルス感染症禍での長期隔離の際の健康維持などにその成果が応用できる。

Report

(6 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (35 results)

All 2020 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (5 results) Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 3 results) Presentation (19 results) (of which Int'l Joint Research: 5 results,  Invited: 3 results) Remarks (4 results)

  • [Int'l Joint Research] Massachusetts Institute of Technology/UT Southwestern Medical Center(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Massachusetts Institute of Technology/UT Southwestern Medical Center(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Massachusetts Institute of Technology/UT Southwestern Medical Center(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Massachusetts Institute of Technology/UT Southwestern Medical Center(U.S.A.)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] Massachusetts Institute of Technology/UT Southwestern Medical Center/IEEM(U.S.A.)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Changes in cerebral oxygen saturation and cerebral blood flow velocity under mild +Gz hypergravity2019

    • Author(s)
      Toru Konishi, Takuya Kurazumi, Tomokazu Kato, Chiharu Takko, Yojiro Ogawa, Ken-ichi Iwasaki
    • Journal Title

      Journal of Applied Physiology

      Volume: 127 Issue: 1 Pages: 190-197

    • DOI

      10.1152/japplphysiol.00119.2019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamic cerebral autoregulation after confinement in an isolated environment for 14?days2018

    • Author(s)
      Kato Tomokazu、Yanagida Ryo、Takko Chiharu、Kurazumi Takuya、Inoue Natsuhiko、Suzuki Go、Ogawa Yojiro、Furukawa Satoshi、Iwasaki Ken-ichi
    • Journal Title

      Environmental Health and Preventive Medicine

      Volume: 23 Issue: 1 Pages: 61-61

    • DOI

      10.1186/s12199-018-0751-y

    • NAID

      210000130314

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The effect of mild decrement in plasma volume simulating short-duration spaceflight on intracranial pressure2018

    • Author(s)
      Kurazumi Takuya、Ogawa Yojiro、Morisaki Hiroshi、Iwasaki Ken-ichi
    • Journal Title

      npj Microgravity

      Volume: 4 Issue: 1

    • DOI

      10.1038/s41526-018-0053-0

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time-Dependent Changes in Cerebral Blood Flow and Arterial Pressure During Mild +Gz Hypergravity2018

    • Author(s)
      Konishi Toru、Kurazumi Takuya、Kato Tomokazu、Takko Chiharu、Ogawa Yojiro、Iwasaki Ken-ichi
    • Journal Title

      Aerospace Medicine and Human Performance

      Volume: 89 Issue: 9 Pages: 787-791

    • DOI

      10.3357/amhp.5106.2018

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Non-invasive intracranial pressure estimation during combined exposure to CO2 and head-down tilt.2018

    • Author(s)
      Kurazumi T., Ogawa Y., Yanagida R., Morisaki H., Iwasaki K.
    • Journal Title

      Aerosp Med Hum Perform.

      Volume: 89 Issue: 4 Pages: 365-370

    • DOI

      10.3357/amhp.5015.2018

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamic cerebral autoregulation during the combination of mild hypercapnia and cephalad fluid shift.2017

    • Author(s)
      Kurazumi T, Ogawa Y, Yanagida R, Morisaki H, Iwasaki K.
    • Journal Title

      Aerosp Med Hum Perform

      Volume: 88 Issue: 9 Pages: 819-826

    • DOI

      10.3357/amhp.4870.2017

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The relationship between widespread changes in gravity and cerebral blood flow2016

    • Author(s)
      Ogawa Y, Yanagida R, Ueda K, Aoki K, Iwasaki K
    • Journal Title

      Environmental Health and Preventive Medicine

      Volume: in press Issue: 4 Pages: 186-192

    • DOI

      10.1007/s12199-016-0513-7

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Presentation] 一晩の絶飲食による自然脱水が脳血流調節に及ぼす影響2020

    • Author(s)
      小川 洋二郎、小西 透、倉住 拓弥、田子 智晴、加藤 智一、大屋 直子、柳田 亮、岩崎 賢一
    • Organizer
      第90回日本衛生学会学術総会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Time Course of Changes in Cerebral Oxygen Saturation by NIRS and Cerebral Blood Flow Velocity by TCD under Mild +Gz2019

    • Author(s)
      Toru Konishi, Takuya Kurazumi, Tomokazu Kato, Chiharu Takko, Yojiro Ogawa, Ken-ichi Iwasaki
    • Organizer
      90th Aerospace Medical Association (AsMA) Annual Scientific Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamic cerebral autoregulation during flexion and extension of the neck in healthy adults2019

    • Author(s)
      Tomokazu Kato, Toru Konishi, Takuya Kurazumi, Chiharu Takko, Yojiro Ogawa, Ken-ichi Iwasaki
    • Organizer
      The ninth international meeting on Cerebral Haemodynamic Regulation (CARNet meeting) in collaboration with International Symposium on Intracranial Pressure and Neuromonitoring 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The increases in intracranial pressure during rapid fluid infusion2019

    • Author(s)
      Takuya Kurazumi, Yojiro Ogawa, Chiharu Takko, Tomokazu Kato, Toru Konishi, Ken-ichi Iwasaki
    • Organizer
      The ninth international meeting on Cerebral Haemodynamic Regulation (CARNet meeting) in collaboration with International Symposium on Intracranial Pressure and Neuromonitoring 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 軽度過重力負荷中の動的脳血流自動調節能の経時変化2019

    • Author(s)
      小西 透、倉住 拓弥、田子 智晴、加藤 智一、小川 洋二郎、岩崎 賢一
    • Organizer
      第65回日本宇宙航空環境医学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 遠心人工重力装置を用いた過重力環境曝露時の脳血流と脳内酸素飽和度の変化2019

    • Author(s)
      小西透、倉住拓弥、加藤智一、田子智晴、柳田亮、小川洋二郎、岩﨑賢一
    • Organizer
      第89回日本衛生学会学術総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 急速輸液投与による血液希釈を伴う循環血液量増加が頭蓋内圧に与える影響2019

    • Author(s)
      倉住拓弥、小川洋二郎、田子智晴、加藤智一、小西透、岩﨑賢一
    • Organizer
      第46回日本集中治療医学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 特別講演「宇宙医学 ~心と体の変化を探る~」2019

    • Author(s)
      小川洋二郎
    • Organizer
      第130回 日本心身医学会関東地方会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] The effects of mild intravascular dehydration on intracranial pressure and cerebral circulation.2018

    • Author(s)
      Kurazumi T., Ogawa Y., Takko C., Kato T., Konishi T., Iwasaki K.
    • Organizer
      8th Meeting of the Cerebral Autoregulation Network (CARNet)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 睡眠導入剤がヒトの脳循環動態に及ぼす影響2018

    • Author(s)
      田子智晴、小川洋二郎、小西透、加藤智一、倉住拓弥、柳田亮、岩﨑賢一
    • Organizer
      第64回日本宇宙航空環境医学会大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Non-invasive assessment of intracranial pressure for spaceflight and related visual impairment for one year mission2017

    • Author(s)
      Kenichi Iwasaki
    • Organizer
      1-Yr Mission Investigators’ Working Group
    • Place of Presentation
      Houston, USA
    • Year and Date
      2017-03-28
    • Related Report
      2016 Annual Research Report
  • [Presentation] 14日間の閉鎖環境は脳循環調節機能に影響をもたらす2017

    • Author(s)
      加藤智一, 柳田 亮, 田子智晴, 倉住拓弥, 井上夏彦, 鈴木 豪, 小川洋二郎, 岩﨑賢一
    • Organizer
      第87回日本衛生学会学術総会
    • Place of Presentation
      シーガイアコンベンションセンター(宮崎県・宮崎市)
    • Year and Date
      2017-03-26
    • Related Report
      2016 Annual Research Report
  • [Presentation] 宇宙医学って何?2017

    • Author(s)
      小川洋二郎、岩崎賢一
    • Organizer
      第542回 日本大学医学会例会
    • Place of Presentation
      日本大学医学部(東京都・板橋区)
    • Year and Date
      2017-03-04
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 宇宙環境における循環調節の変化(シンポジウム:宇宙環境のおける生体影響)2017

    • Author(s)
      岩崎賢一
    • Organizer
      第65回日本職業・災害医学会学術大会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] 「頭部方向体液シフト」と「高二酸化炭素血症」が頭蓋内圧に与える影響2017

    • Author(s)
      倉住拓弥、小川洋二郎、柳田亮、小西透、加藤智一、田子智晴、岩崎賢一
    • Organizer
      第63回日本宇宙航空環境医学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 遠心人工重力装置による軽度過重力負荷中の脳血流及び血圧の変化2017

    • Author(s)
      小西透、倉住拓弥、加藤智一、大屋直子、田子智晴、小川洋二郎、岩崎賢一
    • Organizer
      第63回日本宇宙航空環境医学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 14日間の閉鎖環境が循環調節機能に与える影響2017

    • Author(s)
      加藤智一、柳田亮、田子智晴、倉住拓弥、井上夏彦、鈴木豪、小川洋二郎、古川聡、岩崎賢一
    • Organizer
      第63回日本宇宙航空環境医学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Effects of the combination of CO2 and cephalad fluid shift on dynamic cerebral autoregulation2016

    • Author(s)
      T. Kurazumi, K. Iwasaki, Y. Ogawa, R. Yanagida, K. Aoki
    • Organizer
      16th International Symposium on Intracranial Pressure and Neuromonitoring in conjunction with the 6th Annual Meeting of the Cerebral Autoregulation Research Network
    • Place of Presentation
      Boston, MA, USA
    • Year and Date
      2016-06-28
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シンポジウム6宇宙医学、「宇宙での脳循環変化の研究」2015

    • Author(s)
      岩崎賢一
    • Organizer
      第29回宇宙生物科学会大会
    • Place of Presentation
      帝京大学医学部(東京都板橋区)
    • Year and Date
      2015-09-26
    • Related Report
      2015 Annual Research Report
  • [Remarks] 日本大学医学部社会医学系衛生学分野

    • URL

      http://www.med.nihon-u.ac.jp/department/spacemed/index.html

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] 日本大学大学院医学研究科宇宙航空環境医学

    • URL

      http://www.med.nihon-u.ac.jp/department/spacemed/index.html

    • Related Report
      2016 Annual Research Report
  • [Remarks] 日本大学医学部社会医学系衛生学分野

    • URL

      http://www.med.nihon-u.ac.jp/department/spacemed/

    • Related Report
      2015 Annual Research Report
  • [Remarks] 宇宙に生きる

    • URL

      http://living-in-space.jp/planning-study/A02-1/

    • Related Report
      2015 Annual Research Report

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Published: 2015-07-02   Modified: 2022-11-04  

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