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プロバイオティクスを用いた再発性自発性早産の予防:前向きな,単腕,マルチセンター試験の結果
Satoshi Yoneda1, Nobuko Akamata2, Manabu Nakamura3
1Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan.
American journal of obstetrics and gynecology
|February 21, 2026
まとめ
口服によるプロバイオティクスは,高リスクの女性における再発性自発性早産 (sPTD) を著しく減少させた. この介入は,sPTDの発生率を下げ,妊娠の結果を改善するための有望な戦略です.
科学分野:
- 産婦人科と産婦人科を担当しています.
- マイクロバイオーム研究
- 妊産婦・胎児医学について
背景:
- 再発性自発性早産 (sPTD) は,世界の30%と日本の22.3%で発生し,重大なリスクをもたらす.
- プロバイオティクス,特にクロストリジウム種は,妊娠維持に不可欠な調節性T細胞を調節することにより,sPTDを予防することができます.
研究 の 目的:
- 高リスクの妊婦における再発性SPTDを予防する際に,Clostridium butyricumを含む経口プロバイオティクスの有効性を調査する.
主な方法:
- 315人の高リスクの妊婦が10〜14週から36週,6日の妊娠から口服プロバイオティクスを摂取した.
- プライマリエンドポイントは37週未満のsPTDの再発率であり,日本の歴史的な全国比率は22.3%であった.
主要な成果:
- 37週未満のsPTDの再発率は14.9%で,過去比率 (p=0.0013) よりも著しく低い.
- 34週前のsPTDの割合は3.5%で,28週前のsPTDの再発率は,極端な早産歴のある女性では1.5%でした.
- 死産や重篤な有害事象は報告されていません.
結論:
- プロバイオティクスの経口投与は,過去の国内データと比較して,再発性SPTDの減少率と関連していました.
- このプロバイオティクスのアプローチは,再発性SPTDを減らす可能性を示しており,制御試験でのさらなる調査を正当化しています.
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