マウスの微生物群の組成と短鎖脂肪酸の産生に対する3つの異なる食事サプリメントの効果
Ruicong Wu1,2,3, Xinyou Zhang1,2,3, Haoyu Qin1,2,3
1Jiangsu Key Laboratory of Immunity and Metabolism, Jiangsu International Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou, 221004, China.
BMC nutrition
|September 2, 2025
まとめ
オート,キノコ,カードランのベータグルカンは腸内微生物と短鎖脂肪酸 (SCFA) に異なる影響を及ぼします. オートベータグルカンは微生物群を大幅に変化させ,SCFAを増加させ,代謝と認知の健康への介入の可能性を示唆した.
科学分野:
- 微生物学
- 栄養学
- 免疫学
背景:
- 食中のベータグルカンは前生物学的性質を有しますが,腸内微生物群とSCFAの生産に対する比較効果はよく理解されていません.
- ベータ・グルカンの源固有のバイオアクティビティを理解することは,腸の健康を最適化するために極めて重要です.
研究 の 目的:
- オート,キノコ (Lentinula edodes) とカードランベータグルカンがマウスの腸内微生物群の構成とSCFAプロファイルに与える影響を調査する.
- 特定のベータグルカン,微生物の変化,SCFAの産生との関係を調べる.
主な方法:
- 40匹のC57BL/6Jマウスを15週間にわたり,さまざまなベータグルカンで補足した低脂肪食で飼いました.
- 腸内微生物の組成は16S rRNA配列解析を用いて分析された.
- 血清のSCFA濃度が定量化されました.
主要な成果:
- オートベータグルカンはアルファ多様性を減少させ,プレボテラセアやブチリチコックスのような有益な属を増やし,同時にアセテート,プロピオネート,およびラクテートを上昇させた.
- 選択的にバチラート濃度が上昇した.
- CurdlanはSCFAプロファイルに有意な効果を示さなかった.
- 相関分析は,SCFAを特定したSCFA産生菌族 (Ruminococcaceae,Lachnospiraceae) と関連付けました.
結論:
- ベータ・グルカンの生物活性性は源に依存し,大麦のベータ・グルカンは強力な腸内微生物群の調節を示す.
- 小麦ベータグルカンは,微生物群とSCFAの相互作用を通じて,腸-脳軸に影響を与えます.
- これらの発見は,メタボリックと認知の健康のための食事の介入における価値ある成分としてオートベータグルカンを支持しています.
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