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Physiological role of dehydroepiandrosterone

Research Project

Project/Area Number 16K09806
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Endocrinology
Research InstitutionKanagawa Dental College

Principal Investigator

Aoki Kazutaka  神奈川歯科大学, 大学院歯学研究科, 教授 (60336542)

Co-Investigator(Kenkyū-buntansha) 寺内 康夫  横浜市立大学, 医学研究科, 教授 (40359609)
Research Collaborator SATO haruhiro  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
KeywordsDHEA / DHEA-S / 糖尿病 / インスリン感受性
Outline of Final Research Achievements

In an insulin tolerance test, dehydroepiandrosterone (DHEA) and DHEA-S administration decreased the initial plasma glucose levels in the db/db mice, but they did not decrease the ratios to the basal blood glucose level.
DHEA increased Akt phosphorylation in the liver of C57B6,insulin receptor substrate (IRS)1- and IRS2-deficient mice fed a high fat diet, suggesting that the increase in Akt signaling induced by DHEA is sufficient in the presence of IRS1 or IRS2. DHEA and DHEA-S did not increase Akt phosphorylation in the primary hepatocytes of C57B6 mice.

Academic Significance and Societal Importance of the Research Achievements

副腎アンドロゲンであるDHEAには抗糖尿病作用があるが、その詳細は不明であるため、マウスを用いて肝臓の糖代謝を中心に検討を行った。DHEAは、随時血糖値を改善させたが、インスリン低血糖試験では、インスリン感受性の改善を認めなかった。遺伝子欠損マウスを用いた検討で、DHEAは肝臓のインスリン感受性を亢進させ、これには少なくともIRS-1またはIRS-2のどちらかが存在すればよいことが明らかとなった。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017 2016

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 4 results) Book (2 results)

  • [Journal Article] Usefulness of antidiabetic alpha-glucosidase inhibitors: a review on the timing of administration and effects on gut hormones2019

    • Author(s)
      Aoki Kazutaka、Sato Haruhiro、Terauchi Yasuo
    • Journal Title

      Endocrine Journal

      Volume: 66 Issue: 5 Pages: 395-401

    • DOI

      10.1507/endocrj.EJ19-0041

    • NAID

      130007655246

    • ISSN
      0918-8959, 1348-4540
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Switching From an Anti-Diabetic Loose Dose Combination to a Fixed Dose Combination Regimen at Equivalent Dosage for 6 Months on Glycemic Control in Japanese Patients With Type 2 Diabetes: A Pilot Study.2017

    • Author(s)
      Aoki K, Nagakura M, Taguri M, Kamiyama H, Masumura M, Furuie T, Oka M, Kamiko K, Nakajima S, Akema N, Terauchi Y
    • Journal Title

      J Clin Med Res

      Volume: 9 Issue: 8 Pages: 719-724

    • DOI

      10.14740/jocmr3067w

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of eating speed on obesity and diabetes mellitus (Review)2017

    • Author(s)
      K Aoki, K Kamiko, H Kamiyama, H Sato, Y Terauchi
    • Journal Title

      J Adv Nutr Hum Metab

      Volume: 3

    • DOI

      10.14800/janhm.1610

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of Plasma Glucose and Gut Hormone Levels Between Drinking Enteral Formula Over a Period of 5 and 20 Minutes in Japanese Patients With Type 2 Diabetes: A Pilot Study.2016

    • Author(s)
      Kamiko K, Aoki K, Kamiyama H, Taguri M, Terauchi Y.
    • Journal Title

      J Clin Med Res.

      Volume: 8 Issue: 10 Pages: 749-752

    • DOI

      10.14740/jocmr2686w

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Book] Vitamins and Hormones2018

    • Author(s)
      Aoki K, Terauchi Y.
    • Publisher
      Elsevier Inc.
    • Related Report
      2017 Research-status Report
  • [Book] Advances in Medicine and Biology Volume 114.2017

    • Author(s)
      Aoki K, Terauchi Y.
    • Publisher
      Nova Science Publishers, Inc.
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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