• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Early prediction of children with lower response to pneumococcal conjugate vaccine

Research Project

Project/Area Number 19K08333
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

Hoshina Takayuki  産業医科大学, 医学部, 准教授 (30398078)

Co-Investigator(Kenkyū-buntansha) 小川 将人  産業医科大学, 医学部, 助教 (80566414)
本村 良知  九州大学, 大学病院, 助教 (10737175)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords結合型肺炎球菌ワクチン / 造血細胞移植 / メモリーB細胞 / 小児科学 / 感染症学 / 免疫学
Outline of Research at the Start

フローサイトメトリーを用いて、造血幹細胞移植後の児および早産児および健常乳児から採取した血液中のT細胞およびB細胞サブセットの詳細な解析を行い、結合型肺炎球菌ワクチン(PCV)接種後の免疫低応答例(肺炎球菌特異的IgG・IgM抗体価低値)で割合が低下しているT細胞およびB細胞サブセットを特定することで、宿主側の低応答の要因を探る。
また、免疫低応答の要因としての肺炎球菌の上気道での常在や気道細菌叢の変化などの細菌の関与を探るために、16S ribosomal RNA遺伝子を利用した上気道細菌叢の網羅的解析を行い、正常応答例と低応答例では異なる細菌叢パターンが得られるかを検討する。

Outline of Final Research Achievements

We compared the pnumococcal specific antibodies and lymphocyte subsets between children undergoing hematopeietic stem cell transplantation (HSCT) and immunocompetent children. The titers of pneumococcal specific IgG and IgM antibodies in chidlren undergoing HSCT were significantly lower than those in immunocompetent children. Furthermore, The proportion of class switch memory B cells was significantly lower in children undergoing HSCT than in immunocompetent chidlren. On the other hand, After receiving 3 times of 13-valent pneumococcal conjugate vaccine, the titers of pneumococcal specific IgG and IgM antibodies in children undergoing HSCT reached almost the same levels of those of immunocompetent children.

Academic Significance and Societal Importance of the Research Achievements

本研究結果より、造血細胞移植後の児は、移植後に肺炎球菌に対する免疫応答が著しく低下しており、その要因として、メモリーB細胞が減少していることが挙げられた。このことは、肺炎球菌に対する免疫応答が低下している児の早期スクリーニングに役立つと考えられた。また、移植後の肺炎球菌ワクチンの再接種時の回数について、3回は必要であることも判明し、移植後のワクチン再接種の計画を策定する際に有用であるとも考えられた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (4 results)

All 2022 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results)

  • [Journal Article] Systemic corticosteroid as an adjunctive treatment for lower respiratory tract infection in children with severe motor and intellectual disabilities2022

    • Author(s)
      Nakamoto Takato、Hoshina Takayuki、Ishii Masahiro、Yamada Gen、Kusuhara Koichi
    • Journal Title

      Journal of Infection and Chemotherapy

      Volume: 28 Issue: 3 Pages: 384-388

    • DOI

      10.1016/j.jiac.2021.11.013

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Trends in voluntary vaccination coverage in a Japanese city2021

    • Author(s)
      Hoshina Takayuki、Kawase Mayumi、Watanabe Shunsuke、Shibahara Junpei、Kojiro Masumi、Miyake Takumi、Sakaguchi Yusuke、Kajiwara Yasuhiro、Kusuhara Koichi
    • Journal Title

      Pediatrics International

      Volume: 63 Issue: 12 Pages: 1466-1471

    • DOI

      10.1111/ped.14712

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The optimal duration of antimicrobial therapy for lower respiratory tract infection in patients with neuromuscular disorders based on a clone library analysis of the bacterial 16S rRNA gene sequence.2020

    • Author(s)
      Kawamura M, Hoshina T, Ogawa M, Yamamoto N, Haro K, Kumadaki T, Fukuda K, Kusuhara K
    • Journal Title

      International Journal of Infectious Diseases

      Volume: 100 Pages: 396-401

    • DOI

      10.1016/j.ijid.2020.09.035

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reduction in the Number of Varicella-Zoster Virus-Specific T-Cells in Immunocompromised Children with Varicella2020

    • Author(s)
      Murata K, Hoshina T, Onoyama S, Tanaka T, Kanno S, Ishimura M, Koga Y, Nakayama H, Ohga S
    • Journal Title

      The Tohoku Journal of Experimental Medicine

      Volume: 250 Issue: 3 Pages: 181-190

    • DOI

      10.1620/tjem.250.181

    • NAID

      130007814974

    • ISSN
      0040-8727, 1349-3329
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi