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Study of enteric non-A, non-B hepatitis virus

Research Project

Project/Area Number 63570309
Research Category

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

Allocation TypeSingle-year Grants
Research Field Gastroenterology
Research InstitutionChiba University

Principal Investigator

ITO Yoshimi  Chiba University, Medical School, assistant, 医学部, 助手 (70159929)

Co-Investigator(Kenkyū-buntansha) YOKOSUKA Osamu  Chiba University, Medical School, assistant, 医学部, 助手 (90182691)
TAGAWA Masami  Chiba University, Medical School, research fellow, 医学部, 医員
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1989: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1988: ¥900,000 (Direct Cost: ¥900,000)
Keywordsenteric non-A, non-B hepatitis virus / Western blot / Polymerase chain reaction / ポリメラ-ゼ・チェ-ン反応 / 電子顕微鏡 / non-A,non-B enteric hepatitis virus / SDS-PAGE / 分子生物学的性状 / 電子顕微鏡検索
Research Abstract

We have tried to identify the enteric non-A, non-B hepatitis virus and their proteins by western blotting, immune-electron microscopy, and genetic engineering techniques.
1 . Fecal materials from patients with enteric non-A, non-B hepatitis were filtered and the filtrants were ultracentrifuged. Then both supernatents and pellets were electrophoresed through 10% acridamide gel. By protein staining with Coomassie blue, bands were observed at size of 100, 64, and 26 kilodalton. However, no specific bands were identified by western blotting using patients' serum at their convalescent stage.
2. By light microscopic examination, histological findings of enteric non-A, non-B hepatitis were almost identical with those of other acute hepatitis. By electron microscopic examination, virus-like particles were observed in the cyteplasm of degenerated hepatocytes. However, we could not identify them as enteric non-A, non-B hepatitis virus particles by immune-electron microscopic examination.
3. Ribonucleic acids (RNA) were extracted from patients fecal materials, then reverse transcribed to cDNA, and ligated with lambda gt 11 vector. The lambda gt 11 library were screened with patients convalescent phase serum, but no positive clone was obtained. Although we examined these RNA by polymerase chain reaction methods, no positive findings were obtained as well.
The reason why we could not obtain the positive finding may be because either the materials were not good; enough to get viral RNA or because antibody production is too weak to detect viral proteins. Further examination is now underway to identify the virus nucleic acids and viral proteins with fecal materials and convalescent phase sera from other patients.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 伊藤よしみ: "急性及び慢性DHBV感染症におけるウィルスDNA、mRNA及び抗原の系統的発現に関する研究" 日本消化器病学会雑誌. 85. 1376-1380 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 伊藤よしみ: "Pre-S_1,S_2 peptideの臨床的意義:Western blot法による検索" 肝臓. 29. 742-745 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 伊藤よしみ: "血漿由来HBVワクチン中のPre-S_1,Pre-S_2ペプタイド及びPre-S_1,S_2抗体産生能についての検討" 肝臓. 29. 1165-1169 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 伊藤よしみ: "抗インタ-フェロン抗体の性状について、特に“Natural"及び“Recombinant"のインタ-フェロンについて" 肝臓.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 横須賀収: "Polymerase chain reaction(PCR)法を用いたHBV DNAの超高感度検出法" 肝臓. 30. 178-181 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yoshimi Ito, et al: "Expression of viral antigen in the early and the late phase of duck hepatitis virus infection" Japanese Journal of Gastroenterology 85:1376-1380, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yoshimi Ito, et al: "Pre-S1 and Pre-S2 polypeptides in the serum of patients with B-viral chronic liver disease" Acta Hepatologica Japonica 29:742-746, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yoshimi Ito, et al: "Detection of Pre-S1, S2 peptides in plasma derived vaccine" Acta Hepatologica Japonica 29:1165-1170, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Yoshimi Ito, et al: "An analysis of anti-interferon antibody by immunoblotting method"

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Osamu Yokosuka, et al: "Supersensitive detection method of HBV DNA using polymerase chain reaction" Acta Hepatologica Japonica 30:178-181, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 伊藤よしみ: "急性及び慢性DHBV感染症におけるウィルスDNA、mRNA及び抗原の系統的発現に関する研究" 日本消化器病学会雑誌. 85. 1376-1380 (1988)

    • Related Report
      1989 Annual Research Report
  • [Publications] 伊藤よしみ: "抗インタ-フェロン抗体の性状について、特に“Natural"及び“Recombinant"のインタ-フェロンについて" 肝臓.

    • Related Report
      1989 Annual Research Report
  • [Publications] 伊藤よしみ: 肝臓. 29. 742-745 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 伊藤よしみ: 肝臓. 29. 1165-1169 (1988)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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