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Immunological and virological study of viral myocarditis and dilated cardiomyopathy by using PCR, in situ hybridization and immunohistochemical technique

Research Project

Project/Area Number 02670415
Research Category

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

Allocation TypeSingle-year Grants
Research Field Circulatory organs internal medicine
Research InstitutionOsaka midical college

Principal Investigator

DEGUCHI Hirofumi  Osaka Medical College, Dept of Intern Med, Assistant, 医学部, 助手 (90131341)

Co-Investigator(Kenkyū-buntansha) KITAURA Yasushi  Osaka Medical College, Dept of Intern Med, Lecturer, 医学部, 講師 (50084950)
KAWAMURA Keishiro  Osaka Medical College, Dept of Intern Med, Professor, 医学部, 教授 (00026832)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1991: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1990: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsViral myocarditis / Dilated cardiomypathy / T lymphocyte / Myocardial biopsy / Immunohistochemistry / Immunoelectron microscopy / PCR / In situ hybridization / Viral myocarditis / Coxsackie B virus / Dilated cardiomyopathy / Major histocompatibility antigen / T lymphocyte / Natural killer cell / In situ hybridization / Electron microscopy / ウイルス遺伝子 / コクサッキ-B_3ウイルス / 心筋培養 / インサイチュハイブリダイゼ-ション
Research Abstract

1)Murine coxsackie B3 virus myocarditis: On days 5, 7 and 9 after virus inoculation, necrotic cardiocytes were surrounded by many CD4^+ cells and macrophages (Mac), and a few CD8^+ cells. Using in situ hybridization method, coxsackie B virus cDNA signal was detected in and around the necrotic foci. Immunoelectron microscopy revealed that virus antigen and MHC1 were present in the plasma membrane, sarcoplasmic reticulum (SR) and Golgi complex of apparently intact cardiocytes on days 5, 7, 9 and 14.CD8^+ cells were conjugated with apparently viable or degenerated cardiocytes, and MHC1 was also located on the plasma membrane of their cardiocytes. Variable expression of MHC2 was found in the cell membrane of small round cells including Mac. CD4^+ cells and Mac often infiltrated in the necrotic foci. Mac were sometimes in close contact with CD4^+ cells. It has been generally assumed that cytotoxic T cells recognize both virus antigen and MHC1, and then lyse target cells in viral infection. In our experiments MHC1 appeared to be involved in development of cardiocyte lysis by CD8^+ cells. MHC2 was detected in the membrane of Mac which were often in contact with CD4^+ cells. The contact suggested an activation of helper T cells. MHC1 and MHC2 may play an important role in antigen recognition and subsequent cell-to-cell interactions in cell-mediated immunity of myocarditis.
2)Myocardial biopsies from patients with viral myocarditis and dilated cardiomyopathy(CDM): T cells and natural killer cells often infiltrated in the myocardial biopsies from patients with viral myocarditis. Many CD8^+ cells sometimes were seen in the necrotic foci. In the patients with CDM a few T cells infiltrated in the myocardium, and T4/T8 ratios in the myocardium were less than 1.0. By using PCR 32% of DCM patients demonstrated coxsackie B virus RNA signals. These findings suggest that viral infection involved in pathogenesis of DCM.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (25 results)

All Other

All Publications (25 results)

  • [Publications] Deguchi H et al.: "Expression of major histocompatibility complex class 1 antigen in the myocardium of murine coxsackie B3 virus myocarditis:Immunoelectron microswpic study" J Clinical Elecfron microscopy. 24. 5-6 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 出口 寛文ら: "拡張型心筋症とウイルス性心筋炎の組織学的特徴" 最新医学. 45. 1990-1996 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 出口 寛文ら: "心筋炎における免疫学的背景" 日本臨床増刊号「臨床免疫」. 下. 468-474 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 出口 寛文ら: "心筋炎と心筋症の心筋超微形態" 細胞. 24. 378-382 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Deguchi H et al.: "Distribution of major histo compatibility complex (MHC) class 1 and 2 antigens in the myocardium of mice with coxsackie B3 virus myocarditis." Japanese Circulation J.54. 789- (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Terasaki F et al: "Ultrastructural alterations of the conduction system in mice exhibiting sinus anest or heart block during coxsackie B3 acute myocarditis" American Heart J. 439-452 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 北浦 泰ら: "心筋生検(循環器検査法)最新内科学大系" 中山書店, (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 北浦 泰ら: "心筋炎の概念定義分類疫学病理最新内科学大系" 中山書店, (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Deguchi H et al: "Expression of major histocompatibility comples class 1 antigen in the myocardium of murine coxsackie B myocarditis; Immunoelectron microscopic study." J Clin Electron Microsc. 24. 5-6 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Deguchi H et al: "Distribution of major histocompatibility complex (MHC) class 1 and 2 antigens in the myocardium of mice with coxsackie B3 virus myocarditis." Jpn Circ J. 54. 789 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Terasaki et al: "Ultrastractural alterations of the conduction system in mice exhibiting sinus arrest or heart block during coxsackie B3 acute myocarditis." Am Heart J. 439 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Koide et al: "Genomic detection of enterviruses in the myocardium : Studies on animal hearts with coxsackievirus B3 myocarditis and endomyocardial biopsies from patients with myocarditis and dilated cardiomyopathy." Jpn Circ J.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 出口 寛文: "心筋症,心筋炎における免疫学的背景" 日木臨牀増刊号「臨床免疫(下巻). 48. 468-473 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 出口 寛文: "拡張型心筋症とウイルス性心筋炎の組織学的特徴" 最新醫學. 45. 1990-1996 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] 出口 寛文: "特発性心筋症および心筋炎" 循環科学. 11. 988-993 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 出口 寛文: "心筋症・心筋炎の超微形態" 細胞. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 小出 尚志: "Genomic detection of entero viruses in the myocardium:Sludies on animal hearts with coxsackievirus B3 myocnditis and endoーmyocardial biopsies of patients with myocarditis and dilated cardiomyopathy" Japanese Circulation Journal.

    • Related Report
      1991 Annual Research Report
  • [Publications] 小出 尚志: "Viral genomic detection in the hearts of C3H/He mice with experimental coxsackievirus B3 myocorditis by gene amplification using the polymerase chain reaction." Japanese Circulation Journal. 56. 148-156 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 北浦 泰: "最新内科学大系32循環器疾患心筋症と心筋炎" 中山書店, 413 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 出口 寛文: "拡張型心筋症とウイルス性心筋炎の組織学的特徴" 最新医学. 10. 1990-1996 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 河村 慧四郎: "心筋症における生検心筋の病理組織像と細胞化学再考察" 日本臨床. 49. 35-43 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 北浦 泰: "心筋症とウイルス遺伝子" 内科. 66. 678-679 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 北浦 泰: "心筋生検" 最新内科学大系. 29. 314-323 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 北浦 泰: "ウイルス性心筋炎" 日本臨床. 49. 176-182 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 北浦 泰: "心筋炎" 循環科学. 10. 916-920 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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