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Analysis of the mechanisms on chemical reception and producing energy signal after dietary fat intake for cause investigation of its high palatability.

Research Project

Project/Area Number 16380085
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Food science
Research InstitutionKyoto University

Principal Investigator

FUSHIKI Tohru  Kyoto University, Food Sci.& Biotech, Professor, 農学研究科, 教授 (20135544)

Co-Investigator(Kenkyū-buntansha) INOUE Kazuo  Kyoto University, Associate Professor, 助教授 (80213148)
TSUZUKI Satosi  Kyoto University, Assistant Professor, 助手 (50283651)
河田 照雄  京都大学, 農学研究科, 教授 (10177701)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥15,900,000 (Direct Cost: ¥15,900,000)
Fiscal Year 2005: ¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 2004: ¥10,200,000 (Direct Cost: ¥10,200,000)
Keywordsdietary fat / palatability / oral stimulation / calcium imaging / inhibition of beta-oxidation / rewarding effect / CD36 / エネルギー信号 / FAT / 口腔内受容体
Research Abstract

We studied the responses of cytosolic calcium ion concentrations in taste cells to signal transduction. Calcium imaging analysis of murine taste cells showed that oleic acid, linoleic acid, and linolenic acid increased cytosolic calcium ion concentrations. This suggests that long-chain fatty acids convey taste information by acting directly on taste cells.
We showed that mice exhibit reinforcing responses to corn oil. Conversely, mice do not show reinforcing responses to the low-energy fat substitute, sorbitol fatty acid ester. However, mice do exhibit reinforcing responses to sorbitol fatty acid ester when corn oil is also administered intragastrically. Moreover, mice refused further consumption of sorbitol fatty acid ester 30 min after the two-bottle test commenced. Thus, it seems that mice stop consuming sorbitol fatty acid ester in response to postingestive signals. Furthermore, we showed that mice did not exhibit reinforcing or palatability responses when beta-oxidation was inhibited. We concluded that the metabolism of fat partly mediated the rewarding effects of fat.

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (12 results)

All 2006 2005 2004

All Journal Article (11 results) Book (1 results)

  • [Journal Article] Inhibition of fatty acid β-oxidation attenuates the reinforcing effects and paratability to fat2006

    • Author(s)
      Suzuki A., Yamane T., Fushiki T.
    • Journal Title

      Nutrition 22

      Pages: 401-407

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Inhibition of fatty acid β-oxidation attenuates the reinforcing effects and paratability to fat2006

    • Author(s)
      Suzuki A
    • Journal Title

      Nutrition 22

      Pages: 401-407

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Inhibition of fatty acid β-oxidation attenuates the reinforcing effects and paratability to fat2006

    • Author(s)
      Suzuki A., Yamane T., Fushiki T.
    • Journal Title

      Nutrition (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Chemical reception of fats in the oral cavity and the mechanism of addiction to dietary fat.2005

    • Author(s)
      Fushiki T, Kawai T
    • Journal Title

      Chem Senses. Suppl.1

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] 油脂とおいしさ2005

    • Author(s)
      伏木 亨
    • Journal Title

      FFIジャーナル(総説) 210巻2号

      Pages: 130-134

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Chemical reception of fats in the oral cavity and the mechanism of addiction to dietary fat.2005

    • Author(s)
      T.Fushiki
    • Journal Title

      Chem Senses Suppl.1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Dietary fat and Palatability (Review, in Japanese)2005

    • Author(s)
      T.Fushiki
    • Journal Title

      FFI Journal 210,2

      Pages: 130-134

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Reduction of diet-induced obesity in transgenic mice overexpressing uncoupling protein 3 in skeletal muscle.2004

    • Author(s)
      Son.C et al.
    • Journal Title

      Diabetologia 47(1)

      Pages: 47-54

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Reduction of diet-induced obesity in transgenic mice overexpressing uncoupling protein 3 in skeletal muscle.2004

    • Author(s)
      Son C.
    • Journal Title

      Diabetologia 47(1)

      Pages: 47-54

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Enhanced insulin sensitivity, energy expenditure and thermogenesis in adipose-specific Pten suppression in mice.2004

    • Author(s)
      Komazawa, N.et al.
    • Journal Title

      Nature Medicine. 10・11

      Pages: 1208-1215

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Reduction of diet-induced obesity in transgenic mice overexpressing uncoupling protein 3 in skeletal muscle2004

    • Author(s)
      Son, C.et al.
    • Journal Title

      Diabetologia 47(1)

      Pages: 47-54

    • Related Report
      2004 Annual Research Report
  • [Book] 脂質栄養と健康 : 第12章油脂の味覚と嗜好性2005

    • Author(s)
      伏木亨(共著)
    • Publisher
      建帛社
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary

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Published: 2004-04-01   Modified: 2016-04-21  

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