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インスリン抵抗性および2型糖尿病の新たな治療法としてVEGF-Bをターゲットにしています
Carolina E Hagberg1, Annika Mehlem, Annelie Falkevall
1Tissue Biology Group, Division of Vascular Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden.
Nature
|October 2, 2012
まとめ
血管内皮成長因子B (VEGF-B) 信号伝達の阻害は,2型糖尿病モデルにおけるインスリン感受性とグルコース耐性を改善する. VEGF-Bをターゲットにすることで,2型糖尿病の管理のための新しい治療戦略を提供することができる.
科学分野:
- エンドクリノロジー エンドクリノロジー
- メタボリック疾患
- 血管生物学 血管生物学
背景:
- 2型糖尿病は世界的に増加しており,過剰な脂質の蓄積がインスリン感受性を損なう.
- 現在,子宮外の脂質蓄積に対する治療法は限られている.
- 血管内皮成長因子B (VEGF-B) は,筋肉内の脂肪酸輸送を調節する.
研究 の 目的:
- 2型糖尿病におけるVEGF-B信号伝達の役割を調査する.
- 潜在的な治療戦略として,VEGF-B 反抗性を評価する.
主な方法:
- 糖尿病 db/db のマウスのVegfbの遺伝的削除.
- VEGF-Bシグナリングの薬理学的阻害は,db/dbマウスと高脂肪食を食らったネズミの抗体を用いて行われます.
主要な成果:
- 減少したVEGF-Bシグナリングは,ネズミのモデルでインスリン感受性を回復し,グルコース耐性を改善しました.
- Vegfbの遺伝的消去は子宮外脂質の蓄積を防止し,ノルモグリセミアを維持しました.
- VEGF-Bの抑制により,臓の小島構造が保たれ,ベータ細胞の機能が改善され,脂質不全が改善されました.
結論:
- VEGF-Bシグナリングブロックは,脂質吸収に対する内皮の障壁機能を強化します.
- VEGF-Bアンタゴニズムは,2型糖尿病に対する有望な新しい治療法である.
- 内皮の脂質輸送をターゲットにすることで,インスリン感受性とグルコースの排出を改善することができます.
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