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2005 Fiscal Year Final Research Report Summary

Non-invasive regeneration therapy of dilated cardiomyopathy using G-CSF

Research Project

Project/Area Number 15209027
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Circulatory organs internal medicine
Research InstitutionGIFU UNIVERSITY

Principal Investigator

FUJIWARA Hisayoshi  Gifu University, Graduate School of Medicine, Professor, 大学院・医学系研究科, 教授 (80115930)

Co-Investigator(Kenkyū-buntansha) TAKEMURA Genzou  Gifu University, University Hospital, Lecturer, 医学部附属病院, 講師 (40283311)
ARAI Masazumi  Gifu University, University Hospital, Lecturer, 医学部附属病院, 講師 (00202721)
KOSAI Kenichirou  Kurume University, Cognitive and Molecular Research Institute of Brain Diseases, Professor, 高次脳疾患研究所, 教授 (90258418)
Project Period (FY) 2003 – 2005
Keywordsdilated cardiomyopathy / cytokine / autophagy / G-CSF / heart failure / remodeling / apotosis / cardiomyocyte regeneration
Research Abstract

In UM-X7.1 strain hamsters, a model of human dilated cardiomyopathy, heart failure progressively develops and a half of them die by 30 weeks old. We ultrastructurally found typical autophagic vacuoles including degraded mitochondria, glycogen granules, and myelin-like figures and overexpressed ubiquitin, cathepsin D and Rab7 in many cardiomyocytes of this model. Importantly, most cardiomyocytes with leaky plasma membrane were positive for cathepsin D, suggesting a direct linkage between autophagic degeneration and cell death. Meanwhile, cardiomyocyte apoptosis appeared insignificant. Injection of granulocyte colony-stimulating factor (10 μg/kg/day) 5 days/week for 15 weeks, started at 15 weeks of age, improved survival among 30-week-old hamsters (100% vs. 53% in the untreated hamsters, p<0.0001), ventricular function and remodeling, increased cardiomyocyte size, and reduced myocardial fibrosis, followed by a dramatic reduction in the autophagic findings. It also resulted in downregulation of tumor necrosis factor-α and increase in activities of Akt, signal transducer and activator of transcription-3, and matrix metalloproteinases. However, there was no clear evidence of transdifferentiation from bone marrow cells into cardiomyocytes. In conclusion, autophagic death is important for cardiomyocyte loss in the cardiomyopathic hamster and granulocyte colony-stimulating factor has the beneficial effect mainly via antiautophagic mechanism rather than antiapoptosis or regeneration.

  • Research Products

    (12 results)

All 2006 2005 2004 2003

All Journal Article (12 results)

  • [Journal Article] Autophagic cardiomyocyte death in cardiomyopathic hamsters and its prevention by granulocyte colony-stimulating factor2006

    • Author(s)
      Miyata S et al.
    • Journal Title

      Am J Pathol 168(2)

      Pages: 386-397

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Treatment with granulocyte colony-stimulating factor ameliorates chronic heart failure2006

    • Author(s)
      Li Y et al.
    • Journal Title

      Lab Invest 86(2)

      Pages: 86(2)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Autophagic cardiomyocyte death in cardiomyopathic hamsters and its prevention by granulocyte colony-stimulating factor.2006

    • Author(s)
      Miyata S, Takemura G, Kawase Y, Li Y, Okada H, Maruyama R, Ushikoshi H, Kanamori H, Li L, Misao Y, Tezuka A, Toyo-oka T, Minatoguchi S, Fujiwara T, Fujiwara H
    • Journal Title

      Am J Pathol 168(2)

      Pages: 386-397

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Treatment with granulocyte colony-stimulating factor ameliorates chronic heart failure2006

    • Author(s)
      Li Y, Takemura G, Okada H, Miyata S, Esaki M, Maruyama R, Fujiwara H
    • Journal Title

      Lab Invest 86(2)

      Pages: 32-44

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Postinfarction Gene Therapy Against Transforming Growth Factor-β Signal Modulates Infarct Tissue Dynamics and Attenuates Left Ventricular Remodeling and Heart Failure.2005

    • Author(s)
      Okada H et al.
    • Journal Title

      Circulation 111(19)

      Pages: 2430-2437

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Postinfarction Gene Therapy Against Transforming Growth Factor-β Signal Modulates Infarct Tissue Dynamics and Attenuates Left Ventricular Remodeling and Heart Failure.2005

    • Author(s)
      Okada H, Takemura G, Kosai K, Li Y, Takahashi T, Esaki M, Yuge K, Miyata S, Maruyama R, Mikami A, Minatoguchi S, Fujiwara T, Fujiwara H
    • Journal Title

      Circulation 111(19)

      Pages: 2430-2437

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Acceleration of the healing process and myocardial regeneration may be important as a mechanism of improvement of cardiac function and remodeling by postinfarction granulocyte colony-stimulating factor treatment.2004

    • Author(s)
      Minatoguchi S et al.
    • Journal Title

      Circulation 109(21)

      Pages: 2572-2580

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Critical roles for the fas/fas ligand system in postinfarction ventricular remodeling and heart failure.2004

    • Author(s)
      Li Y et al.
    • Journal Title

      Circ Res 95(6)

      Pages: 627-636

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Acceleration of the healing process and myocardial regeneration may be important as a mechanism of improvement of cardiac function and remodeling by postinfarction granulocyte colony-stimulating factor treatment.2004

    • Author(s)
      Minatoguchi S, Takemura G, Chen X, Wang N, Uno Y, Koda M, Arai M, Misao Y, Lu C, Suzuki K, Goto K, Komada A, Takahashi T, Kosai K, Fujiwara T, Fujiwara H
    • Journal Title

      Circulation 109(21)

      Pages: 2572-2580

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Critical roles for the fas/fas ligand system in postinfarction ventricular remodeling and heart failure.2004

    • Author(s)
      Li Y, Takemura G, Kosai K, Takahashi T, Okada H, Miyata S, Yuge K, Nagano S, Esaki M, N.C.Khai, Goto K, Mikami A, Maruyama R, Minatoguchi S, Fujiwara T, Fujiwara H
    • Journal Title

      Circ Res 95(6)

      Pages: 627-636

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Postinfarction treatment with an adenoviral vector expressing hepatocyte growth factor relieves chronic left ventricular remodeling and dysfunction in mice.2003

    • Author(s)
      Li Y et al.
    • Journal Title

      Circulation 107(19)

      Pages: 2499-2506

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Postinfarction treatment with an adenoviral vector expressing hepatocyte growth factor relieves chronic left ventricular remodeling and dysfunction in mice.2003

    • Author(s)
      Li Y, Takemura G, Kosai K, Yuge K, Nagano S, Esaki M, Goto K, Takahashi T, Hayakawa K, Koda M, Kawase Y, Maruyama R, Okada H, Minatoguchi S, Mizuguchi H, Fujiwara T, Fujiwara H
    • Journal Title

      Circulation 107(19)

      Pages: 2499-2506

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

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Published: 2007-12-13  

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