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Changes in energy metabolism during hibernation in Japanese black bears

Research Project

Project/Area Number 23780277
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Applied animal science
Research InstitutionHokkaido University

Principal Investigator

SHIMOZURU Michito  北海道大学, (連合)獣医学研究科, 准教授 (50507168)

Project Period (FY) 2011 – 2013
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords冬眠 / クマ / 代謝 / ツキノワグマ
Research Abstract

To investigate how black bears maintain energy homeostasis during hibernation, we analyzed seasonal changes in mRNA expression of energy metabolism-related genes in liver, skeletal muscle, and white adipose tissue. Real-time qPCR analysis revealed up-regulation of gluconegenesis-related genes in the liver, and down-regulation of glycolysis- and de novo lipogenesis-related genes in all three tissues, during hibernation, compared to the active period. The transcriptional modulation during hibernation represents a unique physiological adaptation to prolonged fasting in bears.

Report

(4 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (12 results)

All 2013 2012 2011 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (6 results) Remarks (1 results)

  • [Journal Article] Pregnancy during hibernation in Japanese black bears : effects on body temperature and blood biochemical profiles2013

    • Author(s)
      Shimozuru, M., Iibuchi, R., Yoshimoto, T., Nagashima, A., Tanaka, J., and Tsubota, T.
    • Journal Title

      Journal of Mammalogy

      Volume: 94 (3) Pages: 618-627

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Pregnancy during hibernation in Japanese black bears: effects on body temperature and blood biochemical profiles2013

    • Author(s)
      Michito Shimozuru, Ruriko Iibuchi, Takuro Yoshimoto, Akiko Nagashima, Jun Tanaka, and Toshio Tsubota
    • Journal Title

      Journal of Mammalogy

      Volume: 94(3) Issue: 3 Pages: 618-627

    • DOI

      10.1644/12-mamm-a-246.1

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Changes in expression of hepatic genes involved in lipid metabolism during pre-hibernation period in captive adult female Japanese black bears (Ursus thibetanus japonicus)2012

    • Author(s)
      Shimozuru, M., Kamine, A., and Tsubota, T.
    • Journal Title

      Canadian Journal of Zoology

      Volume: 90 (8) Pages: 945-954

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Changes in expression of hepatic genes involved in energy metabolism during hibernation in captive, adult, female Japanese black bears (Ursus thibetanus japonicus)2012

    • Author(s)
      Shimozuru, M., Kamine, A., and Tsubota, T.
    • Journal Title

      Comparative Biochemistry and Physiology Part B

      Volume: 163 (2) Pages: 254-261

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Changes in expression of hepatic genes involved in lipid metabolism during pre-hibernation period in captive adult female Japanese black bears (Ursus thibetanus japonicus).2012

    • Author(s)
      Shimozuru, M., Kamine, A., and Tsubota, T.
    • Journal Title

      Canadian Journal of Zoology

      Volume: 90 (8) Issue: 8 Pages: 945-954

    • DOI

      10.1139/z2012-062

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 妊娠ツキノワグマにおける冬眠中の体温および血中代謝関連成分の変化2012

    • Author(s)
      下鶴倫人、坪田敏男
    • Organizer
      日本哺乳類学会
    • Place of Presentation
      (相模原、神奈川)
    • Year and Date
      2012-09-21
    • Related Report
      2013 Final Research Report
  • [Presentation] Seasonal change in expression of energy metabolism-related genes in the liver and white adipose tissue of captive, adult, female Japanese black bears2012

    • Author(s)
      Shimozuru, M., Nagashima, A., Kamine, A., and Tsubota, T.
    • Organizer
      14^<th> International Hibernation Symposium
    • Place of Presentation
      (Semmering, Austria)
    • Year and Date
      2012-08-11
    • Related Report
      2013 Final Research Report
  • [Presentation] Body temperature and blood biochemical profiles during hibernation in the Japanese black bear2012

    • Author(s)
      Tsubota, T., and Shimozuru, M.
    • Organizer
      14^<th> International Hibernation Symposium
    • Place of Presentation
      (Semmering, Austria)
    • Year and Date
      2012-08-10
    • Related Report
      2013 Final Research Report
  • [Presentation] Seasonal changes in expression of energy metabolism-related genes in the liver and white adipose tissue of captive, adult, female Japanese black bears (Ursus thibetanus japonicus)2012

    • Author(s)
      Michito Shimozuru, Akiko Nagashima, Akari Kamine and Toshio Tsubota
    • Organizer
      14th International Hibernation Symposium
    • Place of Presentation
      Hotel Panhans (Austria)
    • Related Report
      2012 Research-status Report
  • [Presentation] 妊娠ツキノワグマにおける冬眠中の体温および血中代謝関連成分の変化2012

    • Author(s)
      下鶴倫人・坪田敏男
    • Organizer
      日本哺乳類学会2012年大会
    • Place of Presentation
      麻布大学(神奈川県相模原市)
    • Related Report
      2012 Research-status Report
  • [Presentation] Changes in expression of hepatic genes involved in energy metabolism during the hibernation period in Japanese black bears2011

    • Author(s)
      Shimozuru, M., Kamine, A., and Tsubota, T.
    • Organizer
      20^<th> International Conference on Bear Research & Management
    • Place of Presentation
      (Ottawa, Canada)
    • Year and Date
      2011-07-19
    • Related Report
      2013 Final Research Report
  • [Remarks]

    • URL

      http://wildlife.vetmed.hokudai.ac.jp

    • Related Report
      2013 Final Research Report

URL: 

Published: 2011-08-05   Modified: 2019-07-29  

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