骨格によるエネルギー代謝の内分泌調節
Na Kyung Lee1, Hideaki Sowa, Eiichi Hinoi
1Department of Genetics & Development, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.
Cell
|August 19, 2007
まとめ
骨格は糖質のホメオスタシスを調節する. 骨からのオステオカルチンは,インスリン感受性とグルコース耐性を改善し,その欠如は代謝機能障害を引き起こし,骨を強調します.
科学分野:
- エンドクリノロジー エンドクリノロジー
- メタボリズムは
- 骨の生物学 骨の生物学
背景:
- アディポサイト由来ホルモンは,骨の改造を調節し,骨がエネルギーホメオスタシスに影響を及ぼす可能性があることを示唆しています.
- オステオブラストは,エネルギー代謝に影響を与える信号分子を発現します.
研究 の 目的:
- エネルギー代謝とグルコースホメオスタシスの調節におけるオステオブラスト由来因子の役割を調査する.
- 代謝パラメータに対するOST-PTPとオステオカルシンの影響を決定する.
主な方法:
- OST-PTPまたはオステオカルシンが欠けている遺伝子組み換えマウスの分析.
- ベータ細胞の増殖,インスリン分泌,インスリン感受性の評価.
- オステオカルシンのベータ細胞とアディポサイトへの影響を評価するためのex vivoおよびin vivo実験.
主要な成果:
- OST-PTPが欠けているマウスは,低血糖症,肥満からの保護,ベータ細胞機能の強化とインスリン感受性によるグルコース耐性の向上を示しています.
- オステオカルシンが欠けていたマウスは,グルコース耐性およびインスリン抵抗性の低下を示した.
- オステオカルシン投与は,グルコース耐性を改善し,インスリンとアディポネクチンの発現を刺激します.
結論:
- 骨格は,糖のホメオスタシスに対する内分泌の調節を行います.
- オステオカルシンは,エネルギー代謝に対する骨の影響の重要な媒介です.
- この研究は,骨の既知の生物学的機能と代謝調節に関する理解を拡大します.
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