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Kindling as a model of neuronal plasticity (Effect of dentate nucleus lesion upon amygdaloid kindling in rats)

Research Project

Project/Area Number 01570612
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Psychiatric science
Research InstitutionMiyazaki Medical College

Principal Investigator

TSURU Noriko  Miyazaki Medical College, School of Medicine, Instructor, 医学部, 講師 (90041425)

Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1991: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1990: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1989: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsKindling / Amygdala / Cerebellum / Dentate nucleus / Rat / ラット / キンドリング / 扁桃核 / 歯状核(外側核) / 小脳 / 歯状核
Research Abstract

Amyidaloid kindling is used to investigate whether the cerebeller dentate nuc eus participates in the neuronal plasticity of the cerebrum. In this report we studied the behavioral change, the occurrence of epileptiform events and duration of afterdischarge during amygdaloid kindling under control conditions and after a dentate lesion of the contralateral or ipsilateral cerebellum. Our results indicate that the contralateral dentate lesion induced the facilitation of the behavioral development of the amygdaloid kindling, whereas, there was only a slight increase of the spontaneous epileptiform potential of the amygdala. A second finding was that on a right amygdala which had been influenced by a left dentate lesion, there were few spikes, while on the left amygdala there were frequent spikes. In the ipsilateral dentate lesioned group there was no difference of the development of kindling and number of spikes of the amygdala comparing to the control kindling. However there was a difference of the duration of afterdischarge. As to the comparison of the ipsilateral and contralateral kindling there were significant differences of the development of kindling and spontaneous spikes but no difference of the duration of afterdischarge. These results suggest that the dentate nucleus plays an important role in amygdaloid kindling as well as in the neuronal plasticity of the amygdala, specifically. Therefore the dentate nucleus must play a role in controlling the generalization mechanism of epilepsy. However, the shortening of the afterdischarge of the dentate lesion of either side may be caused the diminution of dentate-thalamic excitatory system.
If the dentate lesion was done after the accomplishment of the amygdaloid kindling, there was no significant change of the development of kindling, the duration of afterdischarge and the number of spontaneous spikes.

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Tsuru N,Kawasaki H.et al.: "Effect of lesion of unilateral dentate nucleus upon amygdaloid Kindling in rats." Neurosciences(Proceeding of the first internatioal conforence on higher neruous funtions). 16. 203-206 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuru N,Kawasaki H.et al.: "Effect of unilaterol dentate nucleus lesions on amygdaloid Kindling in rats." Epilepsia. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuru N and Ueda Y: "Effect of ipsilateral dentate nucleus lesions on amygdaloid Kindling in rats"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuru N, Kawasaki H, Genda S, Hara K, Ueda K, Hashiguchi H: "Effect of lesion of unilateral dentate nucleus upon amygdaloid kindling in rats. (Proceedings of the first international conference on higher nervous functions)" Neurosciences. 16. 203-206 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuru N, Kawasaki H, Genda S, Hara K, Hashiguchi H and Ueda Y: "Effect of unilateral dentate nucleus lesions on amygdaloid kindling in rats." Epilepsia. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Tsuru N and Ueda Y: "Effect of ipsilateral dentate nucleus lesions on amygdaloid kindling inrats"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Noriko Tsuru: "Effect of Lesion on Unilateral Dentate Nucleus upon Amygdaloid Kindling in Rats." Neurosciences. 16. 203-206 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Noriko Tsuru,Hidenori Kawasaki,Satoru Genda et al.: "Effect of Unilateral Dentate Nucleus Lesions on Amygdoloid Kindling in Rats" Epilepsia. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Noriko.Tsuru: "Effect of Lesion of Unilateral Dentate Nucleus upon Amygdaloid Kindling in Rats.(Proceedings)" Neurosciences. 16. 203-206 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Tsuru,N: "Effect of lesion of unilateral cerebellar lateral nucleus on amygdaloid kindling in rats." Epilepsia. 30. 686 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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