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2000 Fiscal Year Final Research Report Summary

Pharmacological Studies for animal model of Binswanger's disease (encephalopathy)

Research Project

Project/Area Number 11470511
Research Category

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

Allocation TypeSingle-year Grants
Section一般
Research Field 応用薬理学・医療系薬学
Research InstitutionTOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY

Principal Investigator

WATANABE Hiroshi  TOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY Inst.of Natural Medicine Dept.of Pharmacology Professor, 和漢薬研究所, 教授 (10012642)

Co-Investigator(Kenkyū-buntansha) TOHDA Michihisa  TOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY Inst.of Natural Medicine Dept.of Pharmacology Assistant Professor, 和漢薬研究所, 助手 (20207525)
MATSUMOTO Kinzo  TOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY Inst.of Natural Medicine Dept.of Pharmacology Associate Professor, 和漢薬研究所, 助教授 (10114654)
Project Period (FY) 1999 – 2000
Keywordslearning and memory / permanent occlusion / bilateral common carotide arteries / differential display / semi-quantitative PCR / antisense / liposome / rat brain
Research Abstract

We have established a chronic cerebral hypoperfusion model that is produced by permanent occlusion of bilateral common carotide arteries (2VO) in rats. The 2VO rats exhibited impairment of learning and memory, rarefaction in the white matter and increase of the glial makers, suggesting that this 2VO model has possibility to be a model of Binswannger's disease (encephalopathy). In this study, we tried to identify the intrinsic factors related with the disease in the 2VO rats using the differentianl display RT-PCR methods. The increased expression clones of 11 and of 12 were isolated form the rat brain 4 days and 4 months after 2VO treatment, respectively. All of these isolated clones were clarified the sequences, which were still partial sequences, and quantified the expression levels by semi-quantitative PCR methods. The factors of which expressions were markedly enhanced by 2VO for 4 days and 4 months were named vof -21 and vof-16, respectively. The sequences of 1,600 bp of vof-21 and 780 bp of vof-16 were clarified. These were novels, although the coding site sequences are still unknown. The expression levels of vof-21 reached maximum at 7 days after 2VO and returned to the control level at 14 days. The expression of vof-16 was abundant in the hippocampus, the tenia tecta, the piriform cortex and the area around the aorta. The existance of both vof-16 and vof-21 in NG108-15 cells were identified by RT-PCR methods. The cells seems to be useful to clarify the cellular functions of both factors by antisenseoligodeoxynucleotides (asODN) methods. The basic examinations for delivery of asODN revealed that pH-sensitive liposomes were useful. We are now studing to clarify the whole sequence and cellular functions of vof-16 and vof-21. Basic examination of delivery of asODN to rat brain are also studying.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Murakami Y. et al.: "Ameliorative effect of tacrine on spatial memory deficit in chronic two vessel occluded rats is reversible and mediated by muscarinic M1 receptor stimulation."Behav.Brain Res.. 109. 83-90 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Xu J.H. et al.: "Protective effect of Oren-gedoku-to (Huang-Lian-Jie-Du-Tang) against impairment of learning and memory inducedby transient cerebral ischemia in mice."J.Ethnopharmacol.. 73. 405-413 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yamada S. et al.: "Increase in receptor binding affinity fornimodipine in the rat brain with permanent occlusion of bilateral carotid arteries."Life Science. 66. 1351-1357 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tabata K. et al.: "Paeoniflorin, a major constituent of peony root, reverses muscarinic M1-receptor antagonist-induced suppression of long-term potentiation in the rat hippocampal slice."Jan.J.Pharmacol.. 83. 25-30 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Skalko-Basnet N. et al.: "Delivery of antisense oligonucleotides to neuroblastoma cells."Neuroreport. 11. 3117-3121 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tohda M. et al.: "Influence of chronic treatment with imipramine on mRNA levels in rat brain : elevation of glyceraldehyde-3-phosphate dehydrogenase levels."Jan.J.Pharmacol.. 81. 393-396 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Tohda M., et al.: "Influence of chronic treatment with imipramine on mRNA levels in rat brain : elevation of glyceraldehyde-3-phosphate dehydrogenase levels."Jan.J.Pharmacol.. 81. 393-396 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamada S., et al.: "Increase in receptor binding affinity for nimodipine in the rat brain with permanent occlusion of bilateral carotid arteries."Life Sci.. 66. 1351-1357 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Murakami Y., et al.: "Ameliorative effect of tacrine on spatial memory deficit in chronic two vessel occluded rats is reversible and mediated by muscarinic M1 receptor stimulation."Behav.Brain Res.. 109. 83-90 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Tabata K., et al.: "Paeoniflorin, a major constituent of peony root, reverses muscarinic M1-receptor antagonist-induced suppression of long-term potentiation in the rat hippocampal slice."Jan J.Pharmacol.. 83. 25-30 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Skalko-Basnet N, et al.: "Delivery of antisense oligonucleotides to neuroblastoma cells."Neuroreport. 11. 3117-3121 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Xu J.H., et al.: "Protective effect of Oren-gedoku-to (Huang-Lian-Jie-Du-Tang) against impairment of learning and memory induced by transient cerebral ischemia in mice."J.Ethnopharmacology. 73. 405-413 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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