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Effects of Aerobic vs. Anaerobic Culture on In-Vivo and In-Vivo Virulence of Streptococcus pneumoniae

Research Project

Project/Area Number 15K19583
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Infectious disease medicine
Research InstitutionHokkaido University

Principal Investigator

Nagaoka Kentaro  北海道大学, 大学病院, 医員 (20750962)

Research Collaborator KONNO SATOSHI  北海道大学, 北海道大学病院, 准教授 (20399835)
NISHIMURA MASAHARU  北海道大学, 北海道大学病院, 教授 (00208224)
Project Period (FY) 2015-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords肺炎球菌 / 肺炎 / ニューモリシン / 嫌気性菌
Outline of Final Research Achievements

In this study, we examined whether the culture condition of either aerobic or anaerobic might be influential to the virulence of Streptococcus pneumoniae, which is a facultative anaerobic bacterium. We here demonstrate that the virulence of S. pneumoniae is highly enhanced in vivo when pre-cultured under anaerobic condition compared with aerobic condition. This is the first report, which validated the difference of pathogenicity between aerobic and anaerobic condition. We consider that the results of our study is important for investigating the pathogenesis of facultative bacterium.

Report

(3 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • Research Products

    (4 results)

All 2016

All Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] Effects of Anaerobic culture on In-Vitro and In-Vivo Virulence of Streptoccus pneumoniae2016

    • Author(s)
      長岡 健太郎
    • Organizer
      2016 ASM microbe
    • Place of Presentation
      Boston Convention & Exhibition Center (Boston, USA)
    • Year and Date
      2016-06-16
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of Anaerobic Culture on In-Vitro and In-Vivo Virulence of Streptococcus pneumoniae2016

    • Author(s)
      長岡 健太郎
    • Organizer
      2016 ASM Microbe
    • Place of Presentation
      Boston Convention & Exhibition Center (Boston, USA)
    • Year and Date
      2016-06-16
    • Related Report
      2015 Research-status Report
  • [Presentation] 肺炎球菌下気道感染における嫌気培養による病的影響の検討2016

    • Author(s)
      長岡 健太郎
    • Organizer
      第90回日本感染症学会総会・学術講演会
    • Place of Presentation
      仙台国際センター(宮城県仙台市)
    • Year and Date
      2016-04-16
    • Related Report
      2015 Research-status Report
  • [Presentation] 肺炎球菌下気道感染における嫌気培養による病的影響の検討2016

    • Author(s)
      長岡 健太郎
    • Organizer
      第90回日本感染症学会総会・学術講演会
    • Place of Presentation
      仙台国際センター(宮城県仙台市)
    • Related Report
      2016 Annual Research Report

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Published: 2015-04-16   Modified: 2018-03-22  

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