経口避妊薬は,腸内微生物群の時間および腸内セグメントに依存するシフトを誘導する
Anna Clapp Organski1, Anjali Reddivari2, Lavanya Reddivari3
1Department of Nutrition Science, Purdue University, West Lafayette, IN 47907, USA.
Nutrients
|August 28, 2025
まとめ
経口避妊薬 (OC) の使用は腸内微生物の組成を変化させ,時間の経過とともに結腸中のエストラディオールのレベルを上昇させます. これらの変化は,特に長期使用の場合,心臓代謝リスクの増加に寄与する可能性があります.
科学分野:
- 微生物学
- 内分泌学
- 心血管科学
背景:
- 経口避妊薬 (OC) は,女性の避妊用に広く使用されています.
- OCsの外因性エストロゲンは内因性エストロゲンとは異なり,心代謝疾患のリスクの増加と関連しています.
- 心臓代謝疾患のリスクにおける腸内微生物の役割は重要だが,OC使用に関して十分に研究されていない.
研究 の 目的:
- 腸内微生物群の組成に対するOC使用の影響を調査する.
- 微生物の変化,腸内エストラディオール,エネルギーバランス,酸化ストレスとの関連を調査する.
主な方法:
- 雌マウスは12週か20週間の間,高脂肪の食事を与えられた.
- 十二指管,管,腸内微生物群を評価した.
- 脂肪酸と腸内エストラディオールの測定値
主要な成果:
- OC治療は12週と20週の両方で結腸エストラディオールのレベルを上昇させた.
- 20週間のOC使用により,ケカルと大腸の微生物群が著しく変化し,イソバター酸が増加した.
- 微生物とエネルギー消費の関連性は,治療期間によって異なる.
結論:
- 口服避妊薬の使用は,時間と場所の特定の腸内微生物と脂肪酸の変化を誘発します.
- 長期使用による結腸エストラディオルの増加は,腸内微生物群と健康に影響を与える可能性があります.
- OCが誘発した腸内微生物のシフトが心臓代謝リスクに寄与することを示唆しています.
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