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1998 Fiscal Year Final Research Report Summary

Histopathological study on neurodegeneration in the mouse model of xeroderma pigmentosum and Cockayne's syndrome

Research Project

Project/Area Number 09680738
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nerve anatomy/Neuropathology
Research InstitutionNiigata University

Principal Investigator

TAKAHASHI Hitoshi  Brain Research Institute, Department of Pathology, Professor, 脳研究所, 教授 (90206839)

Co-Investigator(Kenkyū-buntansha) WAKABAYASHI Koichi  Brain Research Institute, Brain Disease Research Center, Associate Professor, 脳研究所, 助教授 (50240768)
YAMADA Mitsunori  Brain Research Institute, Department of Pathology, Associate Professor, 脳研究所, 助教授 (30240039)
Project Period (FY) 1997 – 1998
KeywordsXeroderma pigmentosum / Cockayne's syndrome / knockout mouse / Central nervous system / Neuropathology / Immunohistochemistry / Neural development / Cell death
Research Abstract

We carried out the histopathological investigations on the mouse model of xeroderma pigmentosum and Cockayne's syndrome. Eleven new born mice were obtaind by mating XPA-/- and CSB-/- adult mice. These 11 mice were examind at day 12 postnatal. Three mice showed smaller values of body arid brain weights than those of 8 other mice (average 3.79 : 6.09 g/p=0.000l and average 0.26 : 0.32 g/p=0.0005, respectively). These 3 mice were genetically XPA-/-CSB-/-.
Hitologically, there were no remarkable abnormalities in the central nervous system, including the cerebrum, brain stem, cerebellum and spinal cord. Immunohistochemical examination, using antibodies against neurofilament, glial fibrillary acidic protein, synaptpphysin, aipha-synuclein and atrophin-1, failed to demonstrate any differences in density and distributions between thses 11 mice.
In conclusion, we considered that small brain (microcephaly) without particular dysorganization resulted from the lacking of both genes XPA and CSB and that these genes may play certain important roles in controlling the primitive cell division and apoptosis in the early developmental phase of the brain.
In parallel with the above investigation, we performed electron immunohisto-chemical study on the two isoform of synaphin/complexin in the rat central nervous system, revealing the different distribution pattern between them.

  • Research Products

    (2 results)

All Other

All Publications (2 results)

  • [Publications] M.Yamada: "Immunohistochemical distribution of the two isoforms of synaphin/complexin involved in neurotransmitter release : localization at the distinct CNS region and synaptic types." Neuroscience. in press.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yamada M,Saisu H,Ishizuka T,Takahashi H,Abe T: "Immunohistochemical distribution of the two isoform of synaphin/complexin involved in neurotransmitter release : localization at the distinct CNS regions and synaptic types. Neuroscience, in the oress (1999)"

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

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Published: 1999-12-08  

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