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Synaptic plasticity in sex steroid-sensitive motoneurons.

Research Project

Project/Area Number 01540621
Research Category

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

Allocation TypeSingle-year Grants
Research Field 動物形態・分類学
Research InstitutionJuntendo University School of Medicine

Principal Investigator

MATSUMOTO Akira  Juntendo Univ. Sch. Med., Assistance Prof., 医学部, 講師 (80053263)

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: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1990: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1989: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsGap junction / connexin 32 / mRNA / in situ hybridization / androgen / rat / lumbar spinal cord / motoneuron / インサイチュ・ハイブリダイゼイション / 新生ラット脳 / ギャップ結合蛋白のmRNA / 肝臓組織 / 脳組織
Research Abstract

Gap junctions are considered to play an important role in metabolic and electrical coupling between neurons. We studied androgenic influence on the expression of the mRNA for gap junction protein in the androgen-sensitive motoneurons in the spinal nucleus of the bulbocavernosus(SNB)by using in situ hybridization histochemistry. A complementary DNA specific for the mRNA for r liver gap junction protein(connexin 32, a gift from Dr. D. A. Goodenough, Harvard Medical Sch was applied to in situ hybridization.
1. Cellular localization of gap junction mRNA was examined in the neonatal male rat brai Autoradiographic signals for connexin 32 mRNA were found to distribute in various regions of the brain such as parietal cortex, hippocampus, thalamus/striatum and hypothalamus. These signals were localized on neuronal cells. Immunohistochemical and ultrastructural observations of the hippocampus supported the presence of gap junctions in the examined region.
2. Cellular localization of gap junction m … More RNA was examined in the lumbar spinal cords of adult male rats. Autoradiographic-signals for connexin 32 mRNA were found to be localized on the somata and proximal dendrites of motoneurons in the SNB, dorsolateral nucleus(DLN)and retrodorsolateral nucleus(RDLN).
3. Adult male rats were castrated and implanted with Silastic tubes containing testosterone or nothing. Animals were sacrificed 4 weeks later. The removal of androgen by castration dramatically reduced the expression of gap junction mRNA in the androgen-sensitive SNB motoneurons, whereas this change was prevented by testosterone treatment. On the contrary, castration or testosterone treatment did not induce any changes in the expression level of gap junction mRNA in the androgen-insensitive RDLN motoneurons. These results suggest that androgen influences the expression of gap junction gene in the SNB motoneurons and may provide evidence for the molecular mechanisms of hormonally induced synaptic plasticity in the SNB motoneurons. Less

Report

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

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Matsumoto,A.et al.: "Gap Junctions between lateral spinal motoneurons in the rat." Brain Res.495. 362-366 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 松本 明: "ギャップ結合の可塑性" 生体の科学. 40. 635-639 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto,A.et al.: "Cellular localization of gap junction mRNA in the neonatal rat brain." Neurosci.Lett.124. 225-228 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto,A.et al.: "Androgen regulates gap junction mRNA expression in androgensensitive motoneurons in the rat spinal cord." Neurosci.Lett.131. 159-162 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto,A.: "Synaptogenic action of sex steroids on developing and adult neuroendocrine brain." Psychoneuroendocrinology. 16. 25-40 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 松本 明: "神経内分秘調節にかかわる神経回路の可塑性と性ホルモン" 解培学雑誌. 66. 81-98 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A., Arnold, A. P. and Micevych, P. E.: "Gap junctions between lateral spinal motoneurons in the rats." Brain Res.495. 362-366 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Arai, Y., Matsumoto, A., Nishizuka, M. and Osanai M.: "Aging and brain transplantation : Possible factors to promote axonal and dendritic growth and synaptogenesis." "Problems of the Aged". Gerontological Society of ROC, Taipei, ROC. 162-174 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A.: "Plasticity of gap junction." Seitai no Kagaku. 40. 635-639 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A., Arai, Y., Urano, A. and Hyodo, S.: "In situ hybridization of gap junction mRNA in the neonatal rat brain." Soc. Neurosci. Abstr.16. 345 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A.: "Synaptogenic action of sex steroids on developing and adult neruoendocrine brain." Psychoneuroendocrinology. 16. 25-40 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A., Arai, Y., Urano, A. and Hyodo, S.: "Cellular localization of gap junction mRNA in the neonatal rat brain." Neurosci. Lett.124. 225-228 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A., Arai, Y., Urano, A. and Hyodo, S.: "Androgen regulates gap junction mRNA expression in androgensensitive motoneurons in the rat spinal cord." Neurosci. lett.131. 159-162 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A., Arai, Y., Urano, A. and Hyodo, S.: "Androgen regulates gap junction mRNA expression in the motoneurons of lumbar spinal cords in adult male rats." Soc. Neurosci. Abstr.17. 1319 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A.: "Synaptic plasticity in the sex steroid-sensitive neuroendocrine brain." Acta Anat. Nippon.66. 81-98 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A.: "Is homosexuality biological?" Biological Science News. 240. 16-18 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A.: "Synaptogenic action of sex steroids on the hypothalamus." J. Physiol.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A. and Arai, Y.: "Hypothalamus." "Atlas of the Endocrine Organs in Vertebrates and Invertebrates". Springer-Verlag.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto, A., Arai, Y. Urano, A. and Hyodo, S.: "Effect of androgen on the expression of gap junction and beta-actin mRNAs in adult rat motoneurons." Neuroscience.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Matsumoto,A.et al.: "Cellular localization of gap junction mRNA in the neonatal rat brain." Neurosci.Lett.124. 225-228 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsumoto,A.et al.: "Androgen regulates gap junction mRNA expression in androgenーsensitive motoneurons in the rat spinal cord." Neurosci.Lett.131. 159-162 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsumoto,A.: "Synaptogenic action of sex steroids on developing and adult neuroendocrine brain." Psychoneuroendocrinology. 16. 25-40 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsumoto,A.: "Synaptogenic action of sex steroids on the hypothalamus." J.Physiol.

    • Related Report
      1991 Annual Research Report
  • [Publications] 松本 明: "神経内分泌調節にかかわる神経回路の可塑性と性ホルモン" 解剖学雑誌. 66. 81-98 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 松本 明: "同性愛は生物学的現象か" 生物科学ニュ-ス. 240. 16-18 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Matsumoto,A.et al.: "Cellular localization of gap junction mRNA in the neonatal rat brain" Neurosci Lett.

    • Related Report
      1990 Annual Research Report
  • [Publications] Matsumoto,A.: "Synaptogenic action of sex steroids on developing and adult neuroendocrine brain" Psychoneuroendocrinology.

    • Related Report
      1990 Annual Research Report
  • [Publications] 松本 明: "神経内分泌調節にかかわる神経回路の可塑性と性ホルモン" 解剖学雑誌.

    • Related Report
      1990 Annual Research Report

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

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