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Investigation in the mechanism of regulation of voluntary exercise and abdominal visceral fat accumulation by monoamines.

Research Project

Project/Area Number 20700551
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Applied health science
Research InstitutionThe University of Tokushima

Principal Investigator

MAWATARI Kazuaki  The University of Tokushima, 大学院・ヘルスバイオサイエンス研究部, 講師 (40352372)

Co-Investigator(Renkei-kenkyūsha) NAKAYA Yutaka  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 教授 (50136222)
HARADA Nagakatsu  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 助教 (40359914)
Project Period (FY) 2008 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsモノアミン / 内臓脂肪 / 自発運動 / 肥満 / 脂質
Research Abstract

We established a new animal model called SPORTS (Spontaneously-Running Tokushima-Shikoku) rats, which show high-epinephrine (Epi) levels. The aim of this study was to investigate the in vivo effect of Epi on acetyl-CoA carboxylase (ACC) and abdominal visceral fat accumulation. We divided both 6-week male control and SPORTS rats into two groups, which were fed either normal diet or high fat and sucrose (HFS) diet for 16 weeks. Food intake was not different among the groups, but SPORTS rats showed significantly lower weight gain than control rats in both diet groups. After 10 weeks of diet treatment, glucose tolerance tests (GTTs) revealed that SPORTS rats had increased insulin sensitivity. Furthermore, SPORTS rats had lower quantities of both abdominal fat and plasma triglyceride (TG). In abdominal fat, elevated ACC Ser-79 phosphorylation was observed in SPORTS rats and suppressed by an antagonist of β-adrenergic receptor (AR), propranolol, or an inhibitor of AMP-activated protein kinase (AMPK), Compound C. From these results, high level of Epi induced ACC phosphorylation mediated through β-AR and AMPK signaling pathways in abdominal visceral fat of SPORTS rats, which may contribute to reduce abdominal visceral fat accumulation and increase insulin sensitivity. Our results suggest that β-AR-regulated ACC activity would be a target for reating lifestyle-related diseases, such as obesity.

Report

(3 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • Research Products

    (6 results)

All 2010 2009 2008

All Journal Article (5 results) (of which Peer Reviewed: 3 results) Book (1 results)

  • [Journal Article] β-Adrenergic-AMPK Pathway Phosphorylates Acetyl-CoA Carboxylase in a High-epinephrine Rat Model, SPORTS.2010

    • Author(s)
      Kazuaki Mawatari, Atsushi Hattori, Satomi Tsuzuki, Emiko Yoshioka, Satomi Toda, (他11名、1番目)
    • Journal Title

      Obesity 18,1

      Pages: 48-54

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Beta-adrenergic-AMPK pathway phosphorylates acetyl-CoA carboxylase in a high epinephrine rat model, SPORTS2010

    • Author(s)
      Kazuaki Mawatari
    • Journal Title

      Obesity 18

      Pages: 48-54

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Beta-adrenergic-AMPK pathway phosphorylates acetyl-CoA carboxylase in a high epinephrine rat model, SPORTS2009

    • Author(s)
      Kazuaki Mawatari
    • Journal Title

      Obesity 17(印刷中)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 運動習慣形成と脳内神経伝達物質2008

    • Author(s)
      中屋豊, 原田永勝, 馬渡一諭
    • Journal Title

      臨床スポーツ医学 25,10

      Pages: 1181-1186

    • NAID

      10026156186

    • Related Report
      2009 Final Research Report
  • [Journal Article] 運動習慣形成と脳内神経伝達物質2008

    • Author(s)
      中屋豊
    • Journal Title

      臨床スポーツ医学 25

      Pages: 1181-1186

    • NAID

      10026156186

    • Related Report
      2008 Annual Research Report
  • [Book] 栄養科学シリーズNEXT「応用栄養学」(第2版)2009

    • Author(s)
      中坊幸弘, 木戸康博, 馬渡一諭, (他24名)
    • Publisher
      講談社サイエンティフィック
    • Related Report
      2009 Final Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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