溶解性繊維の微生物発酵が調節不良でコレスタティック肝がんを誘発する
Vishal Singh1, Beng San Yeoh2, Benoit Chassaing3
1UT-Microbiome Consortium, Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, OH 43614, USA.
Cell
|October 20, 2018
まとめ
イヌリンのような溶解性食物繊維は,腸内細菌が健康に有益な短鎖脂肪酸 (SCFA) に発酵するのを促進します. しかし,イヌリンの摂取は予想外の肝がん (HCC) を誘発し,潜在的なリスクを強調した.
科学分野:
- 微生物学
- ヘパトロジー
- 腫瘍学
- 栄養学
背景:
- 食物溶性繊維は腸内微生物によって有益な短鎖脂肪酸 (SCFA) に発酵されます.
- 溶解性繊維の摂取は一般的に 代謝の健康改善と関連しています
- 特定の溶解性繊維であるイヌリンは,健康への影響について調査されています.
研究 の 目的:
- 溶解性繊維であるイヌリンの肝臓の健康と癌の発症に対する影響を調査する.
- イヌリン誘発性肝がんにおける腸内微生物群と発酵の役割を決定する.
- イヌリン関連肝細胞癌 (HCC) の背後にあるメカニズムを探求する.
主な方法:
- ディスビオティックとワイルドタイプ (WT) のマウスを含む様々なマウスモデルに,イヌリンを含む食事の投与.
- 微生物群依存性を評価するために,細菌のないマウスと抗生物質を投与したマウスの効果を比較する.
- 発酵と胆酸再吸収の薬学的な阻害 保護戦略の評価
主要な成果:
- イヌリンの摂取は,多種多様性のマウスの肝臓細胞癌 (HCC) を誘発した.
- HCCの発生は微生物群に依存しており,細菌のないマウスや抗生物質を投与したマウスでは予防された.
- イヌリンに富んだ高脂肪食は,WTマウスの腸内疾患とHCCの両方を誘発し,コレスタシスと炎症を経由して進行した.
- イヌリン誘発性HCCに対する発酵または胆酸再吸収の抑制.
結論:
- イヌリンのような発酵性繊維は一般的に健康に有益ですが,微生物群に依存した方法で肝がん (HCC) を誘発することができます.
- イヌリン誘発のHCCはコレスタシス,肝細胞死,中性愛性の炎症を含む.
- 発酵性繊維を食品に添加すると,HCCの危険性が高まる可能性があるため,注意が必要です.
キーワード:
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