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C型肝炎ウイルス抗体産生B細胞の定量とその臨床的意義の解明

Research Project

Project/Area Number 18790456
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Gastroenterology
Research InstitutionShinshu University

Principal Investigator

梅村 武司  Shinshu University, 医学部附属病院, 助教(診療) (30419345)

Project Period (FY) 2006 – 2008
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2006: ¥2,100,000 (Direct Cost: ¥2,100,000)
Keywordsウイルス / ELISPOT / HCV / 液性免疫 / B細胞
Research Abstract

昨年度はC型肝炎ウイルス(HCV)のB細胞ELISPOT法の開発を行い,Umemura, et al.Hepatology 2006;43:91-99に臨床的に応用が可能であることを報告した。本年度の研究目的はB細胞ELISPOT法を用いてペグインターフェロンα+リバビリン併用療法を行うC型慢性肝炎患者で前向きに検討を行い治療効果の予測が可能であるか,さらにB細胞数の変化と治療効果に相関があるかどうかについて検討することである。信州大学医学部附属病院消化器内科で48週間のペグインターフェロンα+リバビリン併用療法を行うC型肝炎患者40名において治療前の末梢血単核球を分離した。今後は患者数を増やすとともにこれらの患者についても治療開始24週,治療終了時(48週),治療終了後24週の残りの3ポイントについても前向きに末梢血単核球を分離,保存する予定である。これらの細胞が集まったところでコア,E2,NS3,NS5Bの4種類のHCVタンパクを抗原としてELISPOT法でHCV抗体産生B細胞数を測定する。
また,C型慢性肝炎患者においてHelcobacter pylori(H.pylori)抗体陽性者はインターフェロン治療効果に影響を与えるか検討を行った。H.pylori抗体陽性者は陰性者と比較してHCV RNA量と血小板数がそれぞれ少ないことが判明した。H.pylori抗体価は肝の線維化と相関し血小板数とは逆相関することが明らかとなっだが,インターフェロンの治療効果には影響を与えなかった。多変量解析にてH.pylori抗体陽性と線維化の進行が治療中の血小板数の減少に関与するという知見を得た。

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (14 results)

All 2007 2006

All Journal Article (9 results) (of which Peer Reviewed: 7 results) Presentation (5 results)

  • [Journal Article] Anti-Helicobacter pylori seropositivity:influence on severity and treatment response in patients with chronic hepatitis C2007

    • Author(s)
      Takeji Umemura
    • Journal Title

      Journal of Viral Hepatitis 14

      Pages: 48-54

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lack of Association between FCRL3 and FcγRII polymorphisms in Japanese type 1 autoimmune hepatitis2007

    • Author(s)
      Takeji Umemura
    • Journal Title

      Clinical Immunology 122

      Pages: 338-342

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Immunoglobulin G4-hepatopathy: Association of IgG4-bearing plasma cells in liver with autoimmune pancreatitis2007

    • Author(s)
      Takeji Umemura
    • Journal Title

      Hepatology 46

      Pages: 463-471

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] IgG4-associated autoimmune hepatitis:a differential diagnosis for classical autoimmune hepatitis2007

    • Author(s)
      Takeji Umemura
    • Journal Title

      Gut 56

      Pages: 1471-1472

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Epidemiology of hepatocellular carcinoma in Japan2007

    • Author(s)
      Takeji Umemura
    • Journal Title

      Hepatology Research 37

      Pages: 95-100

    • NAID

      10019772558

    • Related Report
      2007 Annual Research Report
  • [Journal Article] A genome-wide DNA microsatellite association study in Japanese autoimmune hepatitis type 1 patients2007

    • Author(s)
      Shuichi Yokosawa
    • Journal Title

      Hepatology 45

      Pages: 384-390

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two Critical Genes(HLA-DRB1 and ABCF1)in the HLA Region are as sociated with the Susceptibility to Autoimmune Pancreatitis2007

    • Author(s)
      Masao Ota
    • Journal Title

      Immunogenetics 59

      Pages: 45-52

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] IgG4-related sclerosing cholangitis should be included as an exclusion criterion for the diagnosis of primary sclerosing cholangitis2007

    • Author(s)
      Hideaki Hamano
    • Journal Title

      The American Journal of Gastroenterology 102

      Pages: 691-692

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantitative analysis of anti-hepatitis C virus antibody-secreting B cells in patients with chronic hepatitis C2006

    • Author(s)
      Takeji Umemura
    • Journal Title

      Hepatology 43・1

      Pages: 91-99

    • Related Report
      2006 Annual Research Report
  • [Presentation] Association of cytotoxic T-lymphocyte antigen 4 gene polymorphisms with type 1 autoimmune hepatitis in Japanese2007

    • Author(s)
      Takeji Umemura
    • Organizer
      58th American Association of the Liver Diseases
    • Place of Presentation
      ボストン,米国
    • Year and Date
      2007-11-05
    • Related Report
      2007 Annual Research Report
  • [Presentation] Hepatitis B virus(HBV)reactivation in resolved HBV subjects in Japan2007

    • Author(s)
      Takeji Umemura
    • Organizer
      Asian Pacific Digestive Week 2007
    • Place of Presentation
      神戸
    • Year and Date
      2007-10-16
    • Related Report
      2007 Annual Research Report
  • [Presentation] 自己免疫性肝炎におけるFCRL3・CTLA4遺伝子多型の検討2007

    • Author(s)
      梅村武司
    • Organizer
      第43回日本肝臓学会総会
    • Place of Presentation
      東京
    • Year and Date
      2007-05-31
    • Related Report
      2007 Annual Research Report
  • [Presentation] Association of autoimmune pancreatitis with cytotoxic T-lymphocyte antigen 4 gene polymorphism in Japanese patients2007

    • Author(s)
      Takeji Umemura
    • Organizer
      Digestive Diseases Week
    • Place of Presentation
      ワシントンDC,米国
    • Year and Date
      2007-05-21
    • Related Report
      2007 Annual Research Report
  • [Presentation] IgG4-hepatopathy:Association of IgG4-bearing plasma cellss in liver with autoimmune pancreatitis2007

    • Author(s)
      Takeji Umemura
    • Organizer
      Digestive Diseases Week
    • Place of Presentation
      ワシントンDC,米国
    • Year and Date
      2007-05-20
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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