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Changes of excitatory and inhibitory amino acid responses in the relay neurons of lateral geniculate nucleus by optic nerve denervation

Research Project

Project/Area Number 07407002
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field General physiology
Research InstitutionKyushu University

Principal Investigator

AKAIKE Norio  Kyushu University Fac.of Medicine, Professor, 医学部, 教授 (30040182)

Co-Investigator(Kenkyū-buntansha) HARATA Nobutoshi  Kyushu University Fac.of Medicine, Assistant Professor, 医学部, 助手 (90264043)
NODA Mami  Kyushu University Fac.of Medicine, Assistant Professor, 医学部, 助手 (80127985)
NABEKURA Junichi  Kyushu University Fac.of Medicine, Associate Professor, 医学部, 助教授 (50237583)
尾野 恭一  九州大学, 医学部, 講師 (70185635)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥18,100,000 (Direct Cost: ¥18,100,000)
Fiscal Year 1997: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1996: ¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 1995: ¥13,100,000 (Direct Cost: ¥13,100,000)
Keywordslateral geniculate nucleus neuron / retrograde tracer DiI / excitatory amino acid response / inhibitory amino acid response / optic nerve denervation / neurotrauma / aging / intracellular chloride / シナプス・ブートン標本 / 自発性シナプス後電流 / 抑制性シナプス後電流 / GABA / 興奮性アミノ酸受容体 / オートレセプター / GABA_B受容体 / マグネシウムブロック
Research Abstract

In order to clarify the factors contributing to the activities of dorsal lateral geniculate nucleus (LGNd) neurons, we analyzed the physiological properties of excitatory and inhibitory amino acid receptors of the neurons freshly dissociated from animals with or without optic nerve denervation.
(1) The LGNd neurons identified by injection of a retrograde tracer, DiI,were prepared for the electrophysiological study using nystatin perforated patch recording mode under voltageclamp condition.
(2) The effect of excitatory amino acids on the neurons was stronger in the order of KA>NMDA>AMPA>Glu.
(3) A neurotransmitter candidate at retino-geniculate synapses, NAAG,mainly acted at NMDA receptors with a weak KA-like action on non-NMDA receptors.
(4) The values of relative permeability of Ca^<2+> for Cs^+ (Pc_a/Pc_S) were 9.57 and 0.16 for NMDA-and KA-induced responses, respectively.
(5) Intracellular C1^- concentration increased with aging : i. e. 35 mM for 0-2-day-old rat neuron, 22 mM for 2-week-old one, and 15 mM for 6-month-old one. Consequently, GABA depolarizes the neurons of immature rat.
(6) Denervation induced the rise of intracellular C1^- concentration and also decreased Mg^<2+>blockade of NMDA response.
(7) It was found in the study using 'synaptic bouton' preparation that NMDA,AMPA,KA receptors existed on GABAergic nerve endings. THese receptores facilitated tha GABA release from its nerve terminals. Both GABA_B and mGlu receptors also exist on GABA ergic nerve endigs and act as autoreceptors.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (29 results)

All Other

All Publications (29 results)

  • [Publications] Nakashima, Y.: "Effects of glucose deprivation on NMDA-induced current and intracellular Ca^<2+> in rat substantia nigra neurons" J.Neurophysiol.75. 740-749 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Murai, Y.: "Ca^<2+>-activated K^+ currents in rat locus coeruleus neurons induced by experimental ischemia,anoxia and hypoglycemia" J.Neurophysiol.78. 2674-2681 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Harata, N.: "Rundown of the GABA_A response under experimental ischemia in acutely dissociated CA1 pyramidal neurones of the rat" J.Physiol.(Lond.). 500.3. 673-688 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Akaike, N.: "Age-related functional change of the glutamate receptor channels in the rat Meynert neurones" J.Physiol.(Lond.). 504.3. 665-681 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Rhee, J.S.: "Developmental changes of GABA_A receptor-chloride channels in rat Meynert neurons" Brain Res.(In press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Harata, N.: "Excitatory amino acid responses in relay neurons of the rat lateral geniculate nucleus" Neuroscience. (In press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Nakashima, Y., Ishibashi, H., Harata, N.& Akaike, N.: "Effects of glucose deprivation on NMDA-induced current and intracellular Ca^<2+> in rat substantia nigra neurons." J.Neurophysiol. 75. 740-749 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Murai, Y., Ishibashi, H., Koyama, S.& Akaike, N.: "Ca^<2+>-activated K^+ currents in rat locus coeruleus neurons induced by experimental ischemia, anoxia and hypoglycemia" J.Neurophysiol.78. 2674-2681 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Harata, N., Wu, J., Ishibashi, H.Ono, K.& Akaike, N.: "Rundown of the GABA_A response under experimental ischaemia in acutely dissociated CA1 pyramidal neurones of the rat" J.Physiol.(London). 500.3. 673-688 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Akaike, N.& Rhee, J.S.: "Age-related functional changes of the glutamate receptor channels in the rat Meynert neurons." J.Physiol.(London). 504.3. 665-681 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Rhee, J.S., Jin, Y.H.& Akaike, N.: "Developmental cahanges of GABA_A receptor-chloride cahnnels in rat Meynert neurons" Brain Res. (In press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Harata, N., Katayama, J.& Akaike, N.: "Excitatory amino acid responses in relay neurons of rat lateral geniculate nucleus" Neuroscience. (In press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Murai,Y.: "Ca^<2+>-activated K^+ currents in rat locus coeruleus neurons induced by experiments ischemia,anoxia and hypoglycemia" J.Neurophysiol.78. 2674-2681 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Harata,N.: "Rundown of the GABA_A response under experimental ischemia in acutely dissociated CA1 pyramidal neurones of the rat" J.Physiol.(Lond.). 500.3. 673-688 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Akaike,N.: "Age-related functional change of the glutamate receptor channels in the rat Meyner neurones" J.Physiol.(Lond.). 504.3. 665-681 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Jin,Y.H.: "Effects of benzodiazepine receptor agonists in neurones acutely dissociated from the rat neostiatum" NeuroReport. 8. 3197-3200 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Weath-Hansen,S.E.: "Effects of 5-(4-piperidye)isoxazol-3-ol(4-PIOL),a GABA_A receptor partial agonist on recombinant human GABA_A receptors" Neurosci.Lett.230. 45-48 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Sorimachi,M.: "Mechanisms of GABA- and glycine-induced increases of cytosolic Ca^<2+> concentrations in chick embryo ciliary ganglion cells" J.Neurochem.69. 797-805 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yamasita,Y.: "ATP-induced rise in the apamin-sensitive Ca^<2+> dependent K^+ conductance in adult rat hepatocytes." Am.J.Physiol.33. G307-313 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Munakata,M.: "Heterogeneous distribution of benzodiazepine receptors among rat neostriatal neurones." Br.J.Pharmacol.118. 820-825 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Nakashima,Y.: "Effects of glucose deprivation on NMDA-induced current and intracellular Ca^<2+> in rat substantia nigra neurons." J.Neurophysiol.75. 740-749 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Nabekura,J.: "Alpha 2 adrenoceptor potentiates glycine receptor-mediated taurine response through protein kinase A in rat substantia nigra neurons." J.Neurophysiol.76. 2447-2454 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Min,B.I.: "Modulation of glycine-induced chloride current in acutely dissociated rat periaqueductal gray neurons by μ-opioid agonist,DAGO." Brain Res.734. 72-78 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Komatsu,H.: "Mutations in a cyclic nucleotide-gated channel lead to abnormal thermosensation and chemosensation in C.elegans." Neuron. 17. 707-718 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Xu,T.L.: "Protein kinase C-mediated enhancemennt of glycine response in rat sacral dorsal commissural neurones by serotonin." J.Physiol.(London).

    • Related Report
      1996 Annual Research Report
  • [Publications] Junichi Nabekura: "Colocalization of ATP and nicotinic Ach receptors in the identified vagal preganglionic neurone of rat." Journal of Physiology. 484. 519-527 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Satoru Ebihara: "Gramicidin-perforated patch recording: GABA response in mammalian neurones with intact intracellalar chloride." Journal of Physiology. 484. 77-86 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Sinya Ueno: "Photolysis of a newly synthesized caged glycine activates the glycine receptor of rat CNS neurone." Journal of Neuroscience Methods. 58. 163-166 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hitoshi Ishibashi: "Somatostatin modulates high-vottage-activated Ca^<2+> channels in freshly dissociated rat hippoeampal neurons." Journal of Neurophysiology. 74. 1028-1036 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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