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Updated: Feb 24, 2026
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スウェーデンの2つの人口ベースのコホートにおける腸内微生物群と推定される球フィルタレーション率との関連性
Yi-Ting Lin1, Tiscar Graells2, Sergi Sayols-Baixeras3
1Department of Neurobiology, Care Sciences and Society, Division of Family Medicine and Primary Care, Karolinska Institute, Stockholm, Sweden; Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Taiwan.
Kidney international
|February 22, 2026
まとめ
腸内微生物の多様性と44種の種が,成人における腎臓機能と関連している. 微生物の代謝,特にヒスティジンとカルニチンの経路は,腎臓の機能に影響を与え,早期の腎臓保護のターゲットを提供します.
科学分野:
- マイクロバイオームの研究
- ネフロロジーは腎臓科です.
- メタボロミクスとは
背景:
- 腸・腎臓の相互作用は,早期の腎臓病,特に腎臓機能が保たれている地域社会に住む成人の場合,十分に研究されていない.
- 一般の人々の腸内微生物群と腎臓機能の関係に関する証拠は限られている.
研究 の 目的:
- スウェーデンの2つの大規模な人口ベースのコホートで,腸内微生物群の構成と推定されるグルメルフィルタレーション率 (eGFR) の間の関連を定量化するために.
- 特定の細菌種と腎臓機能に関連する代謝経路を特定するために.
主な方法:
- ディープ・ショットガン・メタジェノミクスは,9788人の成人 (SCAPISコホート) と2080人の成人 (MOSコホート) の糞便サンプルで実施された.
- 線形回帰では,バクテリア種の豊富さとeGFRの関連性を分析し,混同因子を調整した.
- 機能的濃縮分析は,種を代謝モジュールとプラズマ代謝産物と関連づけ,部分的な相関は代謝産物-種-eGFR関係と評価した.
主要な成果:
- 腸内微生物のアルファ多様性とeGFR.の間のわずかな逆関連が観察されました.
- 44種のバクテリアは,両方のコホートでeGFRと一貫して関連しており,その多様性の7%を説明しています.
- ヒスティジンとカルニチンの代謝経路が強化され,それらの代謝産物 (トリメチラミンN酸化物,イミダゾールプロピオネートなど) はeGFRと逆相関し,代謝産物パネルはeGFRの変動の51%を説明した.
結論:
- 腸内微生物の多様性と44種の特定の種は,コミュニティに住む成人の腎臓機能と独立して関連しています.
- 微生物の代謝,特にヒスティジンとカルニチンの経路とその循環中の代謝産物,eGFRの変動に寄与しています.
- これらの発見は,腸内微生物の代謝を調節することによって,早期の腎臓保護戦略の潜在的なターゲットを示唆しています.
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