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Machado-Joseph病患者脳におけるCAGリピートの体細胞モザイクの解析-レーザーキャプチャーマイクロダイセクション法を用いて-

Research Project

Project/Area Number 12770322
Research Category

Grant-in-Aid for Encouragement of Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Neurology
Research InstitutionJichi Medical University

Principal Investigator

嶋崎 晴雄  自治医科大学, 医学部, 助手 (30316517)

Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2001: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsMachado-Joseph disease / CAG repeat / somatic mosaicism / laser capture microdissection
Research Abstract

Machado-Joseph病患者2例(体細胞のリピート数:患者A;70,患者B;81)の剖検脳より,小脳の凍結切片を作成した.Laser capture micro dissection法により小脳の細胞層(分子層,Purkinje細胞層,顆粒層,白質)毎に細胞群を分離し,DNAを抽出し,PCRを行い,リピート数を決定した.
その結果,リピート数は,患者Aの分子層:68.97±0.36(n=33),Purkinje細胞層:68.50±0.49(n=36),顆粒層:69.50±0.23(n=36),白質:70.10±0.37(n=30)であった.分子層・Purkinje細胞層・顆粒層と白質の間で,各々リピート数に有意差を認めた.(Mann-Whitney test, P<0.05)患者Bの分子層:81.04±0.23(n=23),Purkinje細胞層:80.52±0.40(n=27),顆粒層:81.29±0.19(n=38),白質:81.80±0.12(n=25)であった.分子層・Purkinje細胞層・顆粒層と白質の間で,各々リピート数に有意差を認めた.(Mann-Whitney test, P<0.05)
今回の実験より,分子層・Purkinje細胞層・顆粒層のリピート数が,白質のリピート数より有意に短いという結果が得られた.これらの結果は,小脳皮質のリピート数が,白質より短いという従来の報告と一致する.同じCAG repeat病であるDRPLAでは,顆粒層が小脳皮質の中では最も短いリピート数を示している.一方Machado-Joseph病では,今回の実験結果より,小脳皮質の層別にはリピート数は有意差がなかったが,顆粒層>分子層>Purkinje細胞層の順にrepeat数が短くなる傾向にあった.

Report

(2 results)
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Namekawa, M., Takiyama, Y., Sakoe, K., Shimazaki, H.et al.: "A large Japanese SPG4 family with a novel insertion mutation of the SPG4 gene : a clinical and genetic study"Journal of the Neurological Sciences. 185(1). 63-68 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Shimazaki, H., Takiyama, Y., Sakoe, K., Amaike, M.et al.: "Meiotic instability of the CAG repeats in the SCA6/CACNA1A gene in two Japanese SCA6 families"Journal of the Neurological Sciences. 185(2). 101-107 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Namekawa,M.Takiyama,Y.Sakoe,K.Shimazaki,H. et al.: "A large Japanese SPG4 family with a novel insertion mutation of the SPG4 gene : a clinical and genetic study."Journal of the Neurological Sciences. 185(1). 63-68 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Shimazaki,H.Takiyama,Y.Sakoe,K.Amaike,M. et al.: "Meiotic instability of the CAG repeats in the SCA6/CACNA1A gene in two Japanese SCA6 families."Journal of the Neurological Sciences. (in press). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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