ラクト-N-トリオースIIは,微生物群に依存するシトルリン生物合成を通じて,代謝機能障害に関連したステアトス性肝疾患を緩和します
Kaiwei Chen1, Huiqing Yu1, Bei Liu1
1School of Basic Medicine, Qingdao Medical College, Qingdao University, Qingdao 266071, China.
Food research international (Ottawa, Ont.)
|February 18, 2026
まとめ
乳酸ナトリオースII (LNT II) は,母乳オリゴサッカリドであり,マウスの代謝機能障害に関連したステアトス性肝疾患 (MASLD) を効果的に治療します. LNT IIは腸の健康を改善し,MASLDの進行に関連したバイオマーカーであるシトルリンを増加させます.
科学分野:
- 肝臓病理学 肝臓病理学
- メタボリック疾患
- マイクロバイオーム研究
背景:
- 代謝機能障害に関連するステアトス性肝疾患 (MASLD) は,治療戦略がほとんどない世界的な健康上の懸念事項です.
- ラクト-N-トライオースII (LNT II) のように,母乳オリゴサッカリド (HMO) は,乳児の栄養を超えた可能性のあるプレバイオティック特性を有しています.
研究 の 目的:
- マウスモデルで高脂肪食によって引き起こされるMASLDに対するプロバイオティック由来LNT IIの治療効果を調査する.
- LNT II 治療に関連する腸内微生物群および代謝産物変化を含む,根本的なメカニズムを探求する.
- MASLDの進行のための潜在的なバイオマーカーとして特定された代謝物の臨床的関連性を評価する.
主な方法:
- クライベロミセス・ラクティス (Kluyveromyces lactis) から派生したLNT IIを高脂肪食 (HFD) を摂取したマウスに投与する.
- 体重,血中脂質プロファイル,炎症マーカー,肝臓組織学によるMASLD進行の評価.
- 腸内微生物群と宿主メタボライトの統合マルチオミック分析 (メタボロミクス,16S rRNAシーケンシング)
- ヒト患者コホートにおけるMASLDの重症度の血清代謝産物濃度の相関分析.
主要な成果:
- LNT IIのサプリメントは,HFD誘発のMASLDを大幅に改善し,体重,血脂,炎症,肝臓ステアトーシスを減少させました.
- マルチオミックスの分析により,LNT IIは腸内微生物群に依存するグルタミン-シトルリン合成経路を強化することが明らかになりました.
- 血清シトルリン濃度が重要な代謝物として特定され,インスリン抵抗性の向上と炎症の減少と正面に関連しています.
- 人間のコホート分析は,血清のシトルリン濃度とMASLDの進行との間に有意な相関があることを確認しました.
結論:
- プロバイオティクスの由来であるLNTIIは,腸内微生物群を調節し,シトルリン産生を促進することにより,MASLDに対する重要な治療的可能性を示しています.
- シトルリンは,MASLDの進行および関連する代謝合併症を評価するための有望な非侵襲的バイオマーカーとして浮上しています.
- この研究は,LNT IIを潜在的な治療薬として,シトルリンをMASLDの貴重な診断マーカーとして強調しています.
関連する概念動画
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
936
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
936
Drugs for Treatment of Constipation-Predominant IBS
915
Pharmacological therapies for IBS-C are designed to alleviate abdominal discomfort and enhance bowel function. In patients with IBS-C, fiber supplements may help soften stools and decrease straining, but may also lead to increased gas production and bloating. Osmotic laxatives like milk of magnesia are frequently used to soften stools and increase stool frequency in IBS-C patients. In addition, two drugs approved for use in severe IBS-C adult cases are linaclotide (Linzess) and lubiprostone...
915
Lipid Catabolism
1.1K
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
1.1K
Liver Regeneration
4.5K
The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
4.5K
Overview of Metabolism
39.1K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
39.1K
Liver Physiology
3.9K
The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
3.9K


