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Establishment of newly found tremor rat as absence seizure model and pharmacological usefulness

Research Project

Project/Area Number 04557123
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 応用薬理学・医療系薬学
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

SASA Masashi  Professor, Hiroshima University School of Medicine, 医学部, 教授 (20025654)

Co-Investigator(Kenkyū-buntansha) SERIKAWA Tadao  Professor, Faculty of Medicine, Kyoto University, 医学部, 教授 (30025655)
MATSUBAYASHI Hiroaki  Research Associate, Hiroshima University School of Medicine, 医学部, 助手 (60165850)
山田 淳三  京都大学, 医学部, 教授 (90025651)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1993: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1992: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsTremor rat / Absence-like seizure / Spontaneously epileptic rat(SER) / Antiepileptics / Hippocampal pyramidal cell / Ca^<2+> channel / TRH
Research Abstract

Studies were performed to establish production and maintenance of newly found tremor rat (tm/tm) that showed absence-like seizures and the pharmacological usefulness of this animal.
(1) The possible focus that shows spikes and wave complex in EEG was found in left hippocampal CA3 field in the young tremor rat, and then the spike and wave complex developed to bilateral corteces and right hippocampal CA3 area with aging.
(2) The profile of the conventional antiepileptic drugs on the absence-like seizures was similar to that on human absence seizures, as in spontaneously epileptic rat (SER) : The seizure was inhibited by ethosuximide, trimethadione, valproate and phenobarbital, but not by phenytoin.
(3) In hippocampal slice preparation, long-lasting depolarization shift accompanying repetitive firing was induced by a single stimulation of the mossy fiber in CA3 pyramidal cells. The response was inhibited by Ca^<2+> antagonist, nicardipine, suggesting that there is an enhancement of Ca^<2+> current in hippocampal CA3 pyramidal cells probably due to Ca^<2+> channel abnormality.
(4) Ca^<2+> current sensitive to nicardipine was obtained using acutely dissociated hippocampal cells.
These results imply that tremor rat is useful for evaluation of the acute and chronic effects of antiepileptics and study on the mechanism underlying the absence-like seizures.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] Masashi Sasa et al.: "Abnormal calcium current in hippocampal CA3 pyramidal cells of the spontaneously epileptic rat(SER)" Japanese Journal of Psychiatry and Neurology. 46. 526-528 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Miyuki Sadamatsu et al.: "Changes of immunoreactive somatostain,neuropeptide Y,and corticotropin-releasing factor(CRF)in the brain of spontaneously epileptic rat(SER)" Japanese Journal of Psychiatry and Neurology. 46. 531-533 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Xie Renming et al.: "Antiepileptic effects of CNK-602A,a novel thyrotropin-releasing hormone analog,on absence-like and tonic seizures of spontaneously epileptic rats" European Journal of Pharmacology. 223. 185-192 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Naoyuki Yoshimura et al.: "Dopamine D-1 receptor-mediated inhibition of micturition reflex by central dopamine from the substantia nigra" Neurourology and Urodynamics. 11. 535-545 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Mitsuyoshi Hara et al.: "Decreased dopamine and increased norepinephrine levels in the spontaneously epileptic rat,a double mutant rat" Epilepsia. 34. 433-440 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kumatoshi Ishihara et al.: "Abnormal excitability of hippocampal neurons of spontaneously epileptic rat(SER),a double mutant" Experimental Neurology. 119. 287-290 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hideo Saji et al.: "Local cerebral glucose utilization in the interictal state of the spontaneously epileptic rat(SER)" Brain Research. 106. 76-79 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshihiko Momiyama et al.: "A mechanism underlying dopamine D1 and D2 receptor-mediated inhibition of dopaminergic neurons in the ventral tegmental" British Journal of Pharmacology. 109. 933-940 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toshihiko Momiyama et al.: "Enhancement of D_2 receptor agonist-induced inhibition by D_1 receptor agonist in the ventral tegmental area" British Journal of Pharmacology. 110. 713-718 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Yutaka Tamura et al.: "Ifenprodil prevents glutamate cytotoxicity via polyamine modulatory sites of N-Methyl-D-Aspartate receptor in cultured cortical neurons" Journal of Pharmacology Experimental and Therapeutics. 265. 1017-1025 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Akinori Akaike et al: "Effects of protein kinase C on the muscarinic excitation of rat adrenal chromaffin cells" Japanese Journal of Pharmacology. 61. 145-148 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Hisamitsu Ujihara et al.: "Blockade of retinal NMDA receptors by sodium nitroprusside is probably due to nitric oxide formation" Japanese Journal of Pharmacology. 61. 375-377 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Sasa, K.Ishihara, T.Momiyama, Xie Renming, N.Todo, T.Amano, T.Serikawa, J.Yamada: "Abnormal calcium current in hippocampal CA3 pyramidal cells of the spontaneously epileptic rat (SER)" Jap.J.Psy.and Neurol.46(2). 526-528 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Sadamatsu, H.Kanai, A.Masui, T.Serikawa, J.Yamada, M.Sasa, N.Kato: "Changes of immunoreactive somatostain, neuropeptide Y, and corticotropin-releasing factor (CRF) in the brain of spontaneously epileptic rat (SER)" Jap.J.Psy.and Neurol.46(2). 531-533 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Xie Renming, K.Ishihara, M.Sasa, H.Ujihara, T.Momiyama, Y.Fujita, N.Todo, T.Serikawa, J.Yamada, and S.Takaori: "Antiepileptic effects of CNK-602A, a novel thyrotropin-releasing hormone analog, on absence-like and tonic seizures of spontaneously epileptic rats" Eur.J.Pharmcol.223. 185-192 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Yoshimura, M.Sasa, O.Yoshida, and S.Takaori: "Dopamine D-1 receptor-mediated inhibition of micturition reflex by central dopamine from the substantia nigra" Neurourology and Urodynamics. 11. 535-545 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Hara, M.Sasa, A.Kawabata, T.Serikawa, T.Yamada, J.Yamada, and S.Takaori: "Decreased dopamine and increased norepinephrie levels in the spontaneously epileptic rat, a double mutant rat" Epilepsia. 34(3). 433-440 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Ishihara, M.Sasa, T.Momiyama, H.Ujihara, J.Nakamura, T.Serikawa, J.Yamada and S.Takaori: "Abnormal excitability of hippocampal neurons of spontaneously epileptic rat (SER), a double mutant" Experimental Neurology. 119. 287-290 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Saji, Y.Iida, M.Takahashi, M.Sasa, T.Serikawa, J.Yamada and A.Yokoyama: "Local cerebral glucose utilization in the interictal state of the spontaneously epileptic rat (SER)" Brain Research. 601. 76-79 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Momiyama, N.Todo and M.Sasa: "A mechanism underlying dopamine D1 and D2 receptor-mediated inhibition of dopaminergic neurons in the ventral tegmental" Brit.J.Pharmcol.109. 933-940 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Momiyama, M.Sasa and S.Takaori: "Enhancement of D_2 receptor agonist-induced inhibition by D_1 receptor agonist in the ventral tegmental area" Brit.J.Pharmcol.110. 713-718 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Tamura, Y.Sato, T.Yokota, A.Akaike, M.Sasa and S.Takaori: "Ifenprodil prevents glutamate cytotoxicity via polyamine modulatory sites of N-Methyl-D-Aspartate receptor in cultured cortical neurons" J.Pharmacol.Exp.Ther.265(2). 1017-1025 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] A.Akaike, M.Sasa, Y.Tamura, H.Ujihara and S.Takaori: "Effects of protein kinase C on the muscarinic excitation of rat adrenal chromaffin cells" Japan.J.Pharmacol.61. 145-148 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Ujihara, A.Akaike, Y.Tamura, T.Yokota, M.Sasa, S.Kashii and Y.Honda: "Blockade of retinal NMDA receptors by sodium nitroprusside is probably due to nitric oxide formation" Japan.J.Pharmacol.61. 375-377 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Mitsuyosi Haraら: "Decreased dopamine and increased norepinephrine levels in the spontaneoously epileptic rat,a double mutant rat" Epilepsia. 34. 433-440 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kumatoshi Ishihara: "Abnormal excitability of hippocampal neurons of spontaneously epileptic rat(SER),a double mutant" Experimental Neurology. 119. 287-290 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Hideo Saji: "Local cerebral glucose utilization in the interictal state of the spontaneously epileptic rat(SER)" Brain Research. 106. 76-79 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Toshihiko Momiyama: "A mechanism underlying dopamine D_1 and D_2 receptor-mediated inhibition of dopaminergic neurons in the ventral tegmental" Brit.J.Pharmcol.109. 933-940 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Yutaka Tamura: "Ifenprodil prevents glutamate cytotoxicity via polyamine moculatory sites of N-Methyl-D-Aspartate receptor in cultured cortical neurons" J.Pharmacol.Txp.Ther.265. 1017-1025 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Toshihiko Momiyama: "Enhancement of D_2 receptor agonist-induced inhibition by D_1 receptor agonist in the ventral tegmental area" Brit.J.Pharmcol.110. 713-718 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Masashi Sasa: "Abnormal Calcium Current in Hippocampal CA3 Pyramidal Cells of the Spontaneously Epileptic rat(SER)" The Japanese Journl of Psychiatry and Neurology. 46. 526-528 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Miyuki Sadamatsu: "Chnages of Immunocreative Somatostatin,Neuropeptide Y,and Corticotropin-Releasing Factor(CRF)in the Brain of Spontaneously Epileptic Rats(SER)" The Japanese Journal of Psychiatry and Neurology. 46. 531-533 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Xie Renming: "Antiepileptic effects of CNK-602A,a novel thyrotropin-releasing hormone analog,on absence-like and tonic seizures of spontaneously epileptic rats." European Journal of Pharmacology. 223. 185-192 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 笹 征史: "自然発症てんかんラットの薬理学的応用" 日本疾患モデル学会記録. 8. 39-44 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Mitsuyoshi Hara: "Decreased Dopamine and Increased Noradrenaline Levels in the Spontaneously Epileptic Rat,a Double Mutant Rat" Epilepsia.

    • Related Report
      1992 Annual Research Report
  • [Publications] Kumatoshi Ishihara: "Abnormal excitability of hippocampal neurons of spontaneously epileptic rats(SER),a double mutant" Experimental Neurology.

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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