Dendrobium officinaleポリサッカリドは,腸内微生物群を調節することにより,ニワトリの慢性的なアルゼン暴露によって引き起こされた肝腸損傷を和らげる
Yan Liu1, Hong Geng2, Biqi Han2
1College of Life Sciences and Food Engineering, Inner Mongolia Minzu University, Tongliao 028000, China; College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China.
International journal of biological macromolecules
|August 27, 2025
まとめ
Dendrobium officinale polysaccharide (DOP) は,腸の健康を改善し,肝臓の損傷を軽減することにより,チキンをアルゼンチンの毒性から保護します. この研究は,DOP
科学分野:
- 獣医学
- 毒理学について
- 薬理学について
背景:
- 甲の曝露は家禽に重大な肝腸損傷を引き起こします.
- Dendrobium officinale polysaccharide (DOP) は,抗酸化および抗炎症的性質を示しています.
- アルセンの毒性に対するDOPのメカニズムを理解することは家禽の健康にとって極めて重要です.
研究 の 目的:
- による肝腸損傷に対するDOPの保護効果を調査する.
- 腸のバリア機能と肝臓の健康に対するDOPの作用の根本的なメカニズムを解明する.
- 腸内微生物の組成と機能を調節するDOPの役割を調査する.
主な方法:
- 19日目の子鶏におけるアルゼンチンの誘発性肝腸損傷モデルを確立.
- DOP (850 mg/kg) を口服して42日間投与し,その保護効果を評価する.
- 遺伝子発現とコラーゲン含有量を含む肝臓と腸の組織マーカーの分析
- 腸内バリアの整合性マーカー (緊密な結合タンパク質) と腸内微生物群の多様性の評価
主要な成果:
- DOPの投与は,ヒ素による肝臓と腸の損傷を大幅に軽減しました.
- DOPは肝繊維症マーカー (α-スムーズ筋アクチン,コラーゲンI) を減少させ,ヒドロキシプロリンを増加させた.
- 腸内炎症マーカー (NF-κB,TNF-α) は減少し,緊密な結合タンパク質 (クラウジン1,ZO1,オクラウジン) は増加した.
- DOP治療は腸内細菌のα多様性インデックスを回復させた.
結論:
- DOPはチキンにおけるアルゼンチンの誘発による肝腸損傷を効果的に軽減します.
- DOPは腸のバリア機能を強化することで肝臓の線維症とステアトーシスから保護します.
- DOPによる腸内微生物群の調節は,毒性に対する保護効果において重要な役割を果たします.
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