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Localization of hepatitis C and G viruses in liver tissue and its significance

Research Project

Project/Area Number 09670529
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Gastroenterology
Research InstitutionShinshu University

Principal Investigator

TANAKA Eiji  Shinshu University School of Medicine, Lecturer, 医学部, 講師 (50163506)

Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1999: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordsin-situ hybridization / liver tissue / hepatitis G virus / hepatitis C virus / chronic hepatitis / lymphocyte / 鎖特異的PCR / HCV / HGV / HGV-C / in-situ hybridization / 単核球 / HGV RNA / 一本鎖RNAプローブ / ジゴキシゲニン
Research Abstract

1. Condition of in-situ hybridization
Digoxigenine labeled RNA probe was prepared by in vitro transcription for in-situ hybridization. Nucleotide sequence of hybridization probe was selected from the NS5 region in both HCV and HGV. Hybridized probes were detected by DIG detection kit. Paraffin-embedded liver specimens were used in the present study.
2. Localization of HGV in liver tissue
Six patients with chronic HGV infection and 6 controls were analyzed. Positive signal of in-situ hybridization was observed in 2 of the 6 patients with HGV infection, while it was observed in none of the 6 controls. The 2 patients with the positive signal were under immuno-suppressive therapy after liver transplantation and had high level of HGV RNA in serum. Both positive and negative strands of HGV RNA were detected in mononuclear cells infiltrated in portal areas, but not in hepatocytes. Those results indicate that HGV replication is absent or limited in hepatocytes, and that HGV is not a hepatitis virus.
3. Localization of HCV in liver tissue Eight
patients with chronic hepatitis C and 8 controls were analyzed. Positive signal of in-situ hybridization was observed in all 6 patients with HCV infection, while it was observed in none of the 6 controls. The positive signal was observed mainly in hepatocytes (only in cytoplasm), and rarely in epitherium of bile ducts. Both positive and negative strands of HCV RNA were detected in hepatocytes. Hepatocytes with the positive signal tended to be more common in central part of lobule than in its peripheral part. Strength and localization of the positive signal did not differ between patients with low and high viral load. Clinical significance of HCV localization in liver tissue is now under investigation.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (36 results)

All Other

All Publications (36 results)

  • [Publications] Tanaka E,et al.: "Evolution of hepatitis G virus infection and antibody response to envelope protein with transfusion-associated non-A, non-B hepatitis"J Viral Hepatitis. 5. 153-159 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E,et al.: "Two patients with acute hepatitis B with suspected sexual transmission of hepatitis B virus"J Gastroenterol. 33. 419-423 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Umemura T,et al.: "TT virus infection in an area of high-endemicity for hepatitis C"Hepatol Research. 13. 212-220 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kobayashi M,et al.: "Detection of GB virus-C/hepatitis G virus genome in peripheral blood mononuclear cells and liver tissue"J Med Virol. 58. 114-121 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kiyosawa K,et al.: "GB virus C/hepatitis G virus"Intervirology. 42. 185-195 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E,et al.: "Does GBV-C/HGV replicate in the liver?"J Gastroenterol. 34. 721-723 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ichijo T,et al.: "Autoimmune hepatitis type 1 without evidence of hepatitis G virus infection"Int Hepatol Commun. 6. 219-224 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kobayashi M,et al.: "Antibody response to E2/NS1 hepatitis C virus protein in patients with acute hepatitis C"J Gastroenterol Hepatol. 12. 73-76 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E,et al.: "Hepatitis G virus/GB virus C infection in patients with chronic non-B, non-C hepatitis"Intern Hepatol Commun. 6. 137-143 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E,et al.: "Hepatitis G virus/GB virus C infection in an area of high endemic hepatitis C virus infection"Hepatology Research. 7. 130-135 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ideura T,et al.: "Clinical significance of hapatitis G virus infection in patients on long-term haemodialysis"J Gastroenterol Hepatol. 12. 762-765 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E,et al.: "Past and present hepatitis G virus infections in area where hapatitis C is highly endemic and those where it is not endemic"J Clin Microbiol. 36. 110-114 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ichijo T, et al.: "Autoimmune hepatitis type 1 without evidence of hepatitis G virus infection."Int Hepatol Commun. 6. 219-224 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kobayashi M, et al.: "Antibody response to E2/NS1 hepatitis C virus protein in patients with acute hepatitis C."J Gastroenterol Hepatol. 12. 73-76 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E, et al.: "Hepatitis G virus/GB virus C infection in patients with chronic non-B, non-C hepatitis."Intern Hepatol Commun. 6. 137-143 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E, et al.: "Hepatitis G virus/GB virus C infection in an area of high endemic hepatitis C virus infection."Hepatology Research. 7. 130-135 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Ideura T, et al.: "Clinical significance of hepatitis G virus infection in patients on long-term haemodialysis."J Gastroenterol Hepatol. 12. 762-765 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E, et al.: "Past and present hepatitis G virus infections in area where hepatitis C is highly endemic and those where it is not endemic."J Clin Microbiol. 36. 110-114 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E, et al.: "Evolution of hepatitis G virus infection and antibody response to envelope protein with transfusion-associated non-A, non-B hepatitis."J Viral Hepatitis. 5. 153-159 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E, et al.: "Two patients with acute hepatitis B with suspected sexual transmission of hepatitis G virus."J Gastroenterol. 33. 419-423 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Umemura T, et al.: "TT virus infection in an area of high-endemicity for hepatitis C."Hepatol Research. 13. 212-220 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kobayashi M, et al.: "Detection of GB virus-C/hepatitis G virus genome in peripheral blood mononuclear cells and liver tissue."J Med Virol. 58. 114-121 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kiyosawa K, et al.: "GB virus C/hepatitis G virus."Intervirology. 42. 185-195 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Tanaka E, et al.: "Does GBV-C/HGV replicate in the liver?"J Gastroenterol. 34. 721-723 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Gad A, et al: "Clinical significance of TT virus infection in patients with chronic liver desease and volunteer blood donors in Egypt"J Med Virol. 60. 177-181 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kobayashi M, et al: "Detection of GB virus-C/hepatitis G virus genome in peripheral blood mononuclear cells and liver tissue"J Med Virol. 58. 114-121 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kiyosawa K, et al: "GB virus C/hepatitis G virus"Intervirology. 42. 185-195 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Tanaka E, et al: "Does GBV-C/HGV replicate in the liver?"J Gastroenterol. 34. 721-723 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Umemura T, et al: "TT virus infection in an area of high-endemicity for hepatitis C"Hepatology Research. 13. 212-220 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Kobayashi: "Detection of GB virus-C/hepatitis G virus genome in peripheral blood mononuclear cells and liver tissues." Journal of Medical Virology. in press.

    • Related Report
      1998 Annual Research Report
  • [Publications] E.Tanaka: "Evolution of hepatitis G virus infection and antibody response to envelope protein in patients with transfusion-associated non-A, non-B hepatitis." Journal of Viral Hepatitis. 5. 153-159 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Eiji Tanaka, et al.: "Hepatitis G virus/GB virus C infection in patients with chronic non-B,non-C hepatitis" Intern.Hepatol.Commun.6. 137-143 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Masakazu Kobayashi, et al.: "Antibody response to E2/NS1 hepatitis C virus protein in patients with acute hepatitis C" J Gastroenterol Hepatol. 12. 73-76 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Michael Tacke, et al.: "Humoral immune response to the E2 protein of hepatitis G virus is associated with long-term recovery from infection and reveals a high frequency of hepatitis G virus exposure among healthy blood donors" Hepatology. 26. 1626-1633 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 田中栄司: "非B非C型慢性肝疾患におけるHGBV-C/HGVの感染" 日本臨牀. 55. 49-53 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Eiji Tanaka, et al.: "Past and present hepatitis G virus infection in areas where hepatitis C is highly endemic and those where it is not endemic" J Clin Microbiol. 36. 110-114 (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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