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Therapy of glycogenosis type II by myoblast transfer

Research Project

Project/Area Number 05670575
Research Category

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

Allocation TypeSingle-year Grants
Research Field Neurology
Research InstitutionTeikyo University

Principal Investigator

USUKI Fusako  Department of Neurology, Teikyo University School of Medicine, Lecturer, 医学部, 講師 (50185013)

Co-Investigator(Kenkyū-buntansha) SHIMIZU Teruo  Department of Neurology, Teikyo University School of Medicine, Professor, 医学部, 教授 (00107666)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1994: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1993: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsGlycogenosis type II / Acid alpha-glucosidase (GAA) / Myoblast / Transfer / Therapy / acidalpha-glucosidase(GAA) / GAA前駆体
Research Abstract

Acid alpha-glucosidase (GAA) of quails is a 105kD protein and is defective in Japanese quails with glycogenosis type II.GAA is synthesized from a high molecular 130kD precursor protein. GAA precursor is once secreted outside the cell, recaptured by the cell and processed to mature type inside the cell.
We focused on this specific GAA synthesis pathway in order to investigate the possibility of the therapy of glycogenosis type II.In this study we examined whether co-culture of disseased cells with normal myoblasts increased GAA activity in the diseased cells. The formation of hybrid myotubes (90% diseased cells + 10% normal cells) increased GAA activity from 27% of the normal level to 54%. GAA precursor from normal cells seems to be processed in the diseased cells. The reduction of the volume of normal cells remains tobe determined.
We found that GAA activity can be found in the serum in various species. These results suggest that glycogenosis type II in Japanese quails can be easily diagnosed by the direct measurement of the serum GAA activity. The plasmapheresis may be useful for the therapy of glycogenosis type II.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 臼杵扶佐子: "Acid maltase 欠損症" Annual Review 神経 1993. 245-252 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Usuki F,Satoshi T et al.: "Morphologic findings in biopsied skeletal muscle and cultured fibroblasts from a female patient with Danon's disease(lysosomal glycogen storage disease without acid maltase deficiency)" J Neurol Sci. 127. 54-60 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Fusako Usuki: "Acid maltase deficiency" Annual Review Neurology 1993. 245-252 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Fusako Usuki, Satoshi Takenaga, Itsuro Higuchi, Nobuyuki Kashio, Masanori Nakagawa, Mitsuhiro Osame: "Morphologic findings in biopsied skeletal muscle and cultured fibroblasts from a female patient with Danon's disease (lysosomalglycogen storage disease without acid maltase deficiency)" J Neurol Sci. 127. 54-60 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Usuki F,Satoshi T et al.: "Morphologic findings in biopsied skeletal muscle and cultured fibroblasts from a female patient with Danon's disease(lysosomal glycogen storage disease without acid maltase deficiency)" J Neurol Sci. 127. 54-60 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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