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Nerve Fiber-circuits of Gustatory Sence

Research Project

Project/Area Number 12671776
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Morphological basic dentistry
Research InstitutionKagoshima University

Principal Investigator

UEMURA Masanori  Kagoshima University, Dental School, Professor, 歯学部, 教授 (00034215)

Co-Investigator(Kenkyū-buntansha) KAJI Takao  Kagoshima University, Dental School, Research Associate, 歯学部, 助手
YAMANAKA Atsushi  Kagoshima University, Dental School, Research Associate, 歯学部, 助手
TABATA Makoto  Kagoshima University, Dental School, Associate Professor, 歯学部, 助教授 (20243248)
尾木 秀直  鹿児島大学, 歯学部, 助手 (10315426)
中嶋 充生  鹿児島大学, 歯学部, 助手 (90217711)
安井 金也  鹿児島大学, 歯学部, 助教授 (70191111)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥2,500,000 (Direct Cost: ¥2,500,000)
Keywordsthalamus / VPMpc / insulacortex / taste / rat / parabrachial nucleus / insular cortex
Research Abstract

Projections from the thalamic gustatory nucleus, i.e. the parvicellular part of the posteromedial ventral thalamic nucleus (VPMpc) to the forebrain regions were studied in the rat by the tract-tracing methods with anterograde tracer (biotinylated dextran amine: BDA) and anterogfade/retrograde tracer (wheat-germ aggluti ni n-horseradish peroxidase: WGA-HRP). After BDA injection into the VPMpc, terminal labeling was observed in the insular cortex, amygdaloid complex, and fundus striati. The terminal labeling in the amygdaloid complex was distributed in dorsolateral area of the rostral part of the lateral amygdaloid nucleus and the rostral part of the lateral subdivision of the central amygdaloid nucleus. The terminal labeling in the central amygdaloid nucleus extended to the fundus striati. The retrograde tracing study with WGA-HRP revealed that the projection fibers from the VPMpc to the amygdaloid complex originated from the medial part of the VPMpc and also from the thalamic area medial to the VPMpc. In the rats injected with Fluoro-Gold and WGA-HRP respectively into the insular cortex and amygdaloid complex, no double-labeled neuronal cell bodies were found in the VPMpc, although neurons labeled singly with Fluoro-Gold were intermingled with those singly labeled with WGA-HRP in the- medial part of the VPMpc. The results indicated that VPMpc neurons projecting to the amygdaloid complex constituted a population different from VPMpc neurons projecting to the insular cortex.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] M.Nakashima, M.Uemura, K.Yasui, H.Ozaki, S.Tabata, A.Taen: "An anterograde and retrograde tracer-tracing study on the projections from the thalamic gustatory area in the rat : distribution of neurons projecting to the insular cortex and amygdaloid complex"Neuroscience Research. 36. 297-309 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Nakashima,M., Uemura,M., Yasui,K., Ozaki,H., Tabata,S., Taen,A.: "An anterograde and retrograde tracer-tracing study on the projections from the thalamic gustatory area in the rat: distribution or neurons projecting to the insular cortex and amygdaloid complex"Neuroscience Research. 36. 297-309 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Nakashima, M.Uemura, K.Yasui, H.Ozaki, S.Tabata, A.Taen: "An anterograde and retrograde tracer-tracing study on the projections from the thalamic gustatory area in the rat: distribution of neurons projecting to the insular cortex and amygdaloid complex"Neuroscience Research. 36. 297-309 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Nakashima,M.Uemura,K.Yasui,H.Ozaki,S.Tabata,A.Taen: "An anterograde and retrograde tracer-tracing study on the projections from the thalamic gustatory area in the rat : distribution of neurons projecting to the insular cortex and amygdaloid complex."Neuroscience Research. 36. 297-309 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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