鉄欠乏と抗生物質が宿主の代謝に及ぼす二重の影響:組織レベルでの分析

Shannon Shoff¹, Sydney Thomas¹, Peng Ji¹

¹Department of Nutrition, UC Davis, One Shields Avenue, Davis, CA 95616, USA.

Metabolites

|August 27, 2025

まとめ

抗生物質は乳児の代謝と脳の発達に鉄欠乏による影響を悪化させる. この研究では IDと抗生物質の併用が組織代謝と神経発達の経路を変えることを示しています

科学分野:

生物化学
小児の栄養
発達神経科学

背景:

鉄欠乏症は幼児期に多く見られ,感染症のリスクと抗生物質の使用が増加します.
抗生物質は特に発達中の組織で ID の健康への悪影響を悪化させる可能性があります.
IDと抗生物質が組織レベルでの代謝に与える影響を理解することは極めて重要です.

研究の目的:

鉄欠乏症における抗生物質投与の組織特異的効果を調査する.
様々な組織におけるメタボロームとmTOR信号経路の活性への影響を評価する.
抗生物質がIDに起因する代謝や発達障害を悪化させるかどうかを判断する.

主な方法:

鉄欠乏症 (ID) は,食事の操作と鉄デクストランの不提供によって誘発された.
IDの子豚のサブセットは,スペクトノミシンとジェンタミシン (ID + Abx) の3日コースを受けた.
腎臓,肝臓,骨格筋,海馬で代謝プロファイリングとmTOR経路タンパク質の活性が評価されました.

主要な成果:

ID + Abx エネルギー代謝障害,ケトーシスの増加,周辺組織における酸化ストレス.
IDとID+Abxの両方によって,ヒポカンパスの神経伝達物質合成経路が著しく影響を受けた.
抗生物質の投与により,ID + Abx豚の海馬におけるmTOR経路タンパク質の活性が上昇した.

結論:

鉄欠乏症中の抗生物質治療は,IDだけで引き起こされる代謝変化を誘発します.
発達中の海馬は特にIDと抗生物質の組み合わせの影響を受けやすいのです
この組み合わせは,乳幼児の神経発達と認知能力に長期的な影響を及ぼす可能性があります.

キーワード:

抗生物質ヒッポカンプス鉄欠乏症腎臓肝臓 mTOR についてメタボロミクス骨格筋豚

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