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Development of a novel quantitative biomarter for intrauterine microorganisms and treatment flowchart to prevent severe compication in preterm infants.

Research Project

Project/Area Number 20K09663
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionUniversity of Toyama

Principal Investigator

YONEDA NORIKO  富山大学, 学術研究部医学系, 助教 (80377283)

Co-Investigator(Kenkyū-buntansha) 仁井見 英樹  富山大学, 学術研究部医学系, 准教授 (50401865)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords早産 / 子宮内感染・炎症 / 起炎菌同定・定量検査法 / 早産児の長期神経発達 / 国際比較 / 子宮内感染 / 子宮内炎症 / PCR / 長期神経発達
Outline of Research at the Start

子宮内感染や絨毛膜羊膜炎は、予後不良の在胎28週未満の早産で高率に認められるが、未破水切迫早産の抗菌薬治療は無効とされていた。我々は独自に開発した細菌DNA汚染のない迅速高感度PCR法で、切迫早産の羊水感染例に適切な抗菌薬治療を行うと早産予後が改善することを報告した。また、早産児の長期神経学的予後の改善のためには、在胎30週未満の早産を防ぐことが重要である。本研究は迅速高感度PCR法に加え、菌数を新たなバイオマーカーとして、治療効果のモニタリングに使用し、新たな診断・治療戦略をもとに切迫早産を管理し、超早産と重篤な後遺症を持つ児の減少をめざす研究である。

Outline of Final Research Achievements

We have developed a rapid, highly sensitive PCR for intrauterine microorganisms in preterm labor patient and have reported the poor prognosis of superinfection and the effectiveness of appropriate antiniotic therapy. In this study, we established a new system to identify and evaluate bacterial species. We found that cases with high amniotic fluid bacteria levels in cases of preterm labor had a high rate of superinfection and neonatal infections, and had a poor perinatal prognosis.
The long-term neurodevelopmental prognosis of preterm infants was evaluated using the Bayley Infant Development Scale, and we reported that the poor neurodevelopmental prognostic factors were preterm delivery at less than 30 weeks' gestation and preeclampsia with decreased maternal renal function. In collaboration with McMaster University in Canada, we also conducted an international comparison of preterm birth management in Japan and Canada and reported the strengths of the two countries.

Academic Significance and Societal Importance of the Research Achievements

日本の超低出生体重児(出生体重1000g未満)の予後は、3歳までの死亡率約15%、神経学的後遺症、視力障害、呼吸器疾患などの重篤な障害をもつ割合は約30%とされ、長期間のNICU入院が必要であり、退院後も重い障害をもった児をケアできる施設が極めて限られているという問題もある。本研究の成果により、切迫早産の子宮内病原微生物を迅速高感度に検出定量することができ、適切な抗菌薬投与が可能となるため、学術的意義がある。また、菌量をバイオマーカーとした治療効果判定、より適切な治療薬の選択による早産児の重症化予防が期待される。ひいては、早産児の予後改善につながり社会的意義があると考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (22 results)

All 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (7 results) (of which Invited: 3 results) Book (3 results)

  • [Int'l Joint Research] McMaster University(カナダ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Department of Obstetrics & Gynecology/McMaster University(カナダ)

    • Related Report
      2021 Research-status Report
  • [Journal Article] 教育講演3「早産児の後遺症なき生存を目指して」2022

    • Author(s)
      米田徳子
    • Journal Title

      日本周産期・新生児学会雑誌 学術集会記録号

      Volume: 57(4) Pages: 581-585

    • Related Report
      2022 Annual Research Report
  • [Journal Article] シンポジウム3「早産予防~第三世代へ~」座長のまとめ2022

    • Author(s)
      中井章人、米田徳子
    • Journal Title

      日本周産期・新生児学会雑誌 学術集会記録号

      Volume: 57(4) Pages: 629-629

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Journal Article] 妊娠高血圧症候群母体から出生した児の長期予後2022

    • Author(s)
      米田徳子,齋藤滋.
    • Journal Title

      腎臓内科

      Volume: 15(3)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Probiotics including Clostridium butyricum, Enterococcus faecium, and Bacillus subtilis may prevent recurrent spontaneous preterm delivery.2022

    • Author(s)
      Arai NA, Yoneda S, Yoneda N, Ito M, Tsuda S, Shiozaki A, Nohira T, Hyodo H, Kumazawa K, Suzuki T, Nagasaki S, Makino S, Saito S.
    • Journal Title

      J Obstet Gynaecol Res

      Volume: 48 Issue: 3 Pages: 688-693

    • DOI

      10.1111/jog.15166

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Japanese Organization of Prevention of Preterm Delivery. Uterine contraction may not be an independent risk factor for spontaneous preterm birth before 35 weeks in women with cervical shortening.2022

    • Author(s)
      Horie K, Takahashi K, Mieno M, Nagayama S, Aoki H, Nagamatsu T, Kanatani A, Hyodo H, Terada K, Hayashi M, Nakai A, Yoneda N, Saito S, Matsuda Y, Matsubara S, Ohkuchi A
    • Journal Title

      Int J Gynaecol Obstet.

      Volume: Nov14 Issue: 3 Pages: 14578-14578

    • DOI

      10.1002/ijgo.14578

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 早産児の後遺症なき生存を目指して2022

    • Author(s)
      米田徳子
    • Journal Title

      日本周産期・新生児学会雑誌 学術集会記録号

      Volume: 57(4) Pages: 581-585

    • Related Report
      2021 Research-status Report
  • [Journal Article] Preeclampsia complicated with maternal renal dysfunction is associated with poor neurological development at 3 years old in children born before 34 weeks of gestation.2021

    • Author(s)
      Yoneda N, Yoneda S, Tsuda S, Ito M, Shiozaki A, Niimi H, Yoshida T, Saito S
    • Journal Title

      Front. Pediatr.

      Volume: 1 Pages: 1-10

    • DOI

      10.3389/fped.2021.624323

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Learning From Strengths: Improving Care by Comparing Perinatal Approaches Between Japan and Canada and Identifying Future Research Priorities2021

    • Author(s)
      Yoneda N, Isayama T, Saito S, Shah P, Santaguida P, Nakamura T, McDonald SD.
    • Journal Title

      J Obstet Gynaecol Can.

      Volume: 43(12) Issue: 12 Pages: 1388-1394

    • DOI

      10.1016/j.jogc.2021.04.018

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Learning from strengths: Improving care by comparing perinatal approaches between Japan and Canada, and identifying future research priorities.2021

    • Author(s)
      Yoneda N, Isayama T, Saito S, Shah P, Santaguida P, Nakamura T, McDonald SD.
    • Journal Title

      J Obstet Gynecol Can.

      Volume: 1 Pages: 1-10

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 携]専攻医と指導医のための産科診療到達目標】病態・疾患編【妊娠中】絨毛膜羊膜炎2020

    • Author(s)
      米田 哲、米田徳子
    • Journal Title

      周産期医学

      Volume: 1 Pages: 1332-1334

    • Related Report
      2020 Research-status Report
  • [Presentation] 日本とカナダにおける早産の周産期アプローチの比較 ~それそれの強みから見えてきた、早産のケアの向上と研究の優先課題~2022

    • Author(s)
      米田徳子,齋藤 滋.
    • Organizer
      第74回日本産科婦人科学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 日本とカナダの周産期専門医と早産児の両親の情報交換から得られた、早産児の予後改善のための優先研究課題2022

    • Author(s)
      米田徳子,諌山哲哉,中村友彦,齋藤 滋.
    • Organizer
      第58回日本周産期・新生児医学会学術集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Preeclampsia complicated with maternal renal dysfunction is associated with poor neurological development at 3 years old children born before 34 weeks of gestation.2021

    • Author(s)
      Yoneda N, Yoneda S, Tsuda S, Ito M, Shiozaki A, Nakashima A, Saito S
    • Organizer
      第73回日本産科婦人科学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 教育講演3 早産児の後遺症なき生存を目指して2021

    • Author(s)
      米田徳子
    • Organizer
      第57回日本周産期・新生児医学会学術集会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 特別講演 早産児の長期予後不良因子から見えてきた新たなる治療および予防戦略について2021

    • Author(s)
      米田徳子
    • Organizer
      第68回北日本産科婦人科学会学術講演会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] シンポジウム3「妊娠高血圧症候群・胎児発育不全の予知・予防」妊娠高血圧腎症の胎児発育不全に対するアンチトロンビンの予防効果の期待2021

    • Author(s)
      米田徳子
    • Organizer
      第41回日本妊娠高血圧学会学術集会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Appropriate antibiotic administration can eradicate intra-amniotic infection in patients with preterm labor and intact membranes2020

    • Author(s)
      Noriko Yoneda, Satoshi Yoneda, Sayaka Tsuda, Mika Ito, Arihiro Shiozaki, Shigeru Saito
    • Organizer
      第72回日本産科婦人科学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Book] 特集/腎と妊娠update2022

    • Author(s)
      米田徳子,齋藤滋.
    • Total Pages
      350
    • Publisher
      科学評論社
    • Related Report
      2021 Research-status Report
  • [Book] 〈くすこれ〉助産師のための薬 これだけ~秒でひけてケアにつながる 第1章妊娠期 9 切迫早産、早産予防①黄体ホルモン ヒドロキシプロゲステロンカプロン酸エステル2021

    • Author(s)
      米田徳子
    • Total Pages
      263
    • Publisher
      メディカ出版
    • ISBN
      9784840475495
    • Related Report
      2021 Research-status Report 2020 Research-status Report
  • [Book] 早産のすべて-基礎から臨床・DOHaDまで- 腸内細菌叢と早産2020

    • Author(s)
      米田徳子、齋藤 滋
    • Total Pages
      289
    • Publisher
      メジカルビュー社
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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