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Activation of T and B lymphocytes by oral mycoplasmas

Research Project

Project/Area Number 07672035
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 病態科学系歯学(含放射線系歯学)
Research InstitutionHOKKAIDO UNIVERSITY

Principal Investigator

SHIBATA Kenichiro  Hokkaido Univ.Sch.Dent., Associate Prof., 歯学部, 助教授 (50145265)

Co-Investigator(Kenkyū-buntansha) WATANABE Tsuguo  Hokkaido Univ.Sch.Dent., Prof., 歯学部, 教授 (10064362)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1996: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordsmycoplasma / phospholipase C / T cells / apoptosis / TNF-alpha / fibroblast / IL-6 / IL-8 / TNFα / 口腔マイコプラズマ / コンカナバリンA
Research Abstract

1. AIDS-associated mycoplasmas possessed phosphatidylcholine- and phosphatidylinositol (PI) -specific phospholipases C (PLC) in the membrane. PLC are shown to be a virulence determinant of bacteria. Especially, PI-PLC are known to release GPI-anchored proteins such as CD14, CD55 and Fc receptor which play important roles in the defense system of the host.
2. Oral and AIDS-associated mycoplasmas possessed the activity to enhance concanavalin A-induced apoptosis of mouse splenic T cells. TNF-alpha was found to play an key role in the expression of the activity.
3. Oral mycoplasmas induces interleukin-6 and interleukin-8 in human gingival fibroblasts by a mechanism different from that of lipopolysaccharides of gram-negative bacteria.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 柴田健一郎,佐々木次雄,渡邊継男: "AIDS-associated mycoplasmas possess phospholipases C in the membrane" Infection and Immunity. 63. 4174-4177 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 柴田健一郎,渡邊継男: "Mycoplasma fermentans enhances concanavalin A-induced apoptosis of mouse splenic T cells" FEMS Immunology and Medical Microbiology. 17. 103-109 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Ken-ichiro Shibata, Tsuguo Sasaki, Tsuguo Watanabe: "AIDS-associated mycoplasmas possess phospholipases C in the membrane" Infection and Immunity. 63. 4174-4177 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Ken-ichiro Shibata, Tsuguo Watanabe: "Mycoplasma fermentans enhances concanavalin A-induced apoptosis of mouse splenic T cells" FEMS Immunology and Medical Microbiology. 17. 103-109 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 柴田健一郎、渡邊継男: "Mycoplasma fermentans enhances concavalin A-induced apoptosis of mouse splenic T cells" FEMS Immunology and Medical Microbiology. 17・2. 103-109 (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 柴田健一郎,佐々木次雄,渡邊継男: "AIDS-associated mycoplasmas possess phospholipases C in the membrane" Infection and Immunity. 63. 4174-4177 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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