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Analysis of the adaptation for the spontaneous low-energy state in chickens during incubation behavior

Research Project

Project/Area Number 19K06350
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 42010:Animal production science-related
Research InstitutionIbaraki University

Principal Investigator

Ohkubo Takeshi  茨城大学, 農学部, 教授 (70233070)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsCRP / レプチン / エネルギー代謝 / ニワトリ / CPR / 視床下部 / C-reactive protein / 摂食 / 抱卵
Outline of Research at the Start

我々は、炎症の指標として知られるC-reactive protein (CRP)の遺伝子発現が抱卵中のニワトリ視床下部で増加することを見出した。近年、CRPが飽食ホルモン・レプチンの作用を阻害することが示され、エネルギー代謝との関連が示唆されている。また、抱卵中のニワトリは自発的に摂食を抑制し、低エネルギー状態へ適応する。このような背景から、本研究では、「エネルギー摂取量と脳内CRP発現の関連性」、「レプチン情報伝達に対するCRPの影響」、「脳内CRPの局在」を解析し、抱卵期のニワトリの摂食及びエネルギー代謝に対するCRP関与の可能性について明らかにする。

Outline of Final Research Achievements

In the present study, the relationship between CRP and leptin was analyzed to clarify the adaptation of chickens to the physiological low-energy state (incubation behavior).
As a result, it was found that CRP is a marker reflecting energy intake and that the liver metabolism may be altered specifically during incubation behavior based on the result of CRP mRNA expression. On the other hand, unlike mammals, the interaction between CRP and leptin is not associated to regulate energy metabolism in birds. Furthermore, it was revealed that mRNA expression of CRP and leptin increases from late development in the hypothalamus chick embryos when neural circuit construction occurs.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は、ニワトリが抱卵中の自律的なエネルギー摂取の抑制とそれに対する適応に炎症性マーカーの一つであるC反応性タンパク質(CRP)が関与する可能性を見出したもので、ニワトリの生殖とエネルギー摂取との関連を明らかにするうえで、学術的な意義は高い。さらに本研究では、発生後期のニワトリ胚視床下部でCRPとレプチンがともに増加することを今回初めて明らかにした。発生後期の視床下部における両因子の役割は明らかでなく、脳の機能発達と両因子の関係解明に向けた研究の進展が期待される。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] Orexin system is expressed in avian liver and regulates hepatic lipogenesis via ERK1/2 activation2020

    • Author(s)
      Greene E. S.、Zampiga M.、Sirri F.、Ohkubo T.、Dridi S.
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1 Pages: 19191-19191

    • DOI

      10.1038/s41598-020-76329-2

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification of hypothalamic genes in associating with food intake during incubation behavior in domestic chicken2019

    • Author(s)
      Takeda Misa、Ohkubo Takeshi
    • Journal Title

      Animal Science Journal

      Volume: 90 Issue: 9 Pages: 1293-1302

    • DOI

      10.1111/asj.13261

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Determination of Polymorphisms in Pituitary Genes of the Native Afghani Naked Neck Chicken2019

    • Author(s)
      Ahmadi Sadequllah、Takeda Misa、Ohkubo Takeshi
    • Journal Title

      The Journal of Poultry Science

      Volume: 56 Issue: 4 Pages: 253-261

    • DOI

      10.2141/jpsa.0180087

    • NAID

      130007733294

    • ISSN
      1346-7395, 1349-0486
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Leptin stimulates ovarian insulin-like growth factor-1 mRNA expression and promotes primordial follicle development in juvenile chicks2022

    • Author(s)
      Sadequllah Ahmadi and Takeshi Ohkubo
    • Organizer
      日本家禽学会2022年度春季大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ニワトリ後期胚の発生におけるNPW及びNPBWR2発現変動と生理機能変化の可能性2021

    • Author(s)
      有馬 明莉、曳地結衣、神作宜男、大久保武
    • Organizer
      日本家禽学会2021年度春季大会
    • Related Report
      2020 Research-status Report
  • [Presentation] ニワトリ発生胚下垂体に対するVIPアンタゴニストのPRL分泌抑制作用2021

    • Author(s)
      神作宜男、大久保武、河上真一
    • Organizer
      日本家禽学会2021年度春季大会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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