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Brain Function for Enjoying Meal-Study by Using Positron CT

Research Project

Project/Area Number 14370625
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionTohoku University

Principal Investigator

KIKUCHI Masahiko  Tohoku University, Graduate School of Dentistry, Associate Professor, 大学院・歯学研究科, 助教授 (60195211)

Co-Investigator(Kenkyū-buntansha) IWAMATSU Masaaki  Tohoku University, Graduate School of Dentistry, Assistant Professor, 大学院・歯学研究科, 助手 (30343031)
TAKATSU Masaki  Tohoku University, Hospital, Assistant Professor, 病院・助手 (50343033)
ITOH Masatoshi  Tohoku University, Cyclotron RI Center, Professor, サイクロトロンRIセンター, 教授 (00125501)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥8,200,000 (Direct Cost: ¥8,200,000)
Fiscal Year 2004: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2003: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2002: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsMastication / Taste Sensation / FDG-PET / Eldery / Brain Function / Jaw Muscle Activities / Functional MRI / Integrative Function / ポジトロンCT / 味覚障害
Research Abstract

At first, the study was designed to quantify the local and overall activity of masticatory muscles and the brain during lateral excursion of the mandible using FDG-PET. Eleven healthy young male volunteers who had normal masticatory function participated in the study. Each subject received an injection of 39.2 +/-5.2 MBq of ^<18>F-FDG into the cubital vein. Just after the injection, each subject was asked to start left lateral excursion of the mandible at 1.0 Hz and then continued for 30 min. As results, the mean SURs of contralateral lateral pterygoid and medial pterygoid muscles were significantly higher than those of the bilateral masseter muscles. There was large variation in the FDG accumulation of the masticatory muscles during function among subjects and muscle activities of each subject showed individual manner. However it was difficult to characterize the brain activities during mandibular function by PET images.
Therefore functional magnetic resonance imaging (fMRI) was also applied to analyze the brain function during gum chewing. In the MR Scanner (Siemens Magnetom Vision Plus, 1.5T), subjects (three males) wearing earplugs in a supine position were instructed to perform the following task : chewing gum with no taste and orange taste as taste stimuli and watching the projected images of the cutting surface of an orange and an orange colored mosaic as visual stimuli. Combining these stimuli, MR imaging under four conditions were carried out. As results, much activities in the parietal and temporal lobes were observed when both of taste and visual stimuli were applied than when both were not. On the other hand, the image of an orange and the occluded image as visual stimuli had no effect on the difference between the brain activities with and without taste stimuli.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (6 results)

All 2004

All Journal Article (5 results) Book (1 results)

  • [Journal Article] 高齢者の味覚機能に及ぼす要因に関する研究2004

    • Author(s)
      花井正歩, 玉澤佳純, 高藤道夫, 菊池雅彦, 渡辺誠
    • Journal Title

      老年歯学 19

      Pages: 94-103

    • NAID

      10013599690

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] オーラルジスキネジア2004

    • Author(s)
      菊池雅彦, 渡辺誠
    • Journal Title

      補綴臨床 9

      Pages: 565-573

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Study on the factors affecting the taste function in the elderly2004

    • Author(s)
      Hanai M, Tamazawa Y, Takafuji M, Kikuchi M, Watanabe M
    • Journal Title

      Journal of Geriatric Dentistry 19

      Pages: 94-103

    • NAID

      10013599690

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Oral dyskinesia2004

    • Author(s)
      Kikuchi M, Watanabe M
    • Journal Title

      Practice in Prosthodontics 9

      Pages: 565-573

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Planning for treatment, Color atlas handbook, Clinical poinhts for removable partial dentures2004

    • Author(s)
      Kikuchi M
    • Journal Title

      Quintessence Publishing Co.

      Pages: 25-42

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] 治療方針の立案 カラーアトラスハンドブック 有床義歯臨床ヒント集2004

    • Author(s)
      菊地雅彦
    • Publisher
      クインテッセンス出版
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary

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Published: 2002-04-01   Modified: 2016-04-21  

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