肥満に関連した腸内微生物群は,エネルギー収集能力が向上しています
Peter J Turnbaugh1, Ruth E Ley, Michael A Mahowald
1Center for Genome Sciences, Washington University, St. Louis, Missouri 63108, USA.
Nature
|December 22, 2006
まとめ
腸内微生物群の構成は肥満に影響する. 肥満の微生物群は,食事からエネルギーの収穫を強化し,肥満の特徴を痩せた宿主に伝達し,肥満の発生要因として特定することができます.
科学分野:
- 微生物学 微生物学とは
- メタボリズムは
- 肥満に関する研究
背景:
- 世界的な肥満の流行は,エネルギーバランスに影響を与える要因を特定することを必要としています.
- 肥満は,腸内微生物群の組成の変化,特にバクテロイドスとフィルミクテスの変化と関連しています.
- 以前の研究では,肥満と痩せた人の腸内微生物群と動物モデルを比較した.
研究 の 目的:
- 肥満における腸内微生物群の代謝の可能性を調査する.
- 肥満の腸内微生物群の代謝能力の変化が伝染するかどうかを判断する.
- 肥満の病理生理学における腸内微生物群の役割を確立する.
主な方法:
- 腸内微生物群のメタゲノミクス分析.
- メタボリックポテンシャルの生化学分析.
- 微生物群移植実験は,細菌のないマウスで行われました.
主要な成果:
- 肥満の腸内微生物群は,食事からエネルギーを収穫する能力が向上しています.
- "肥満の微生物群"によるコロニー化は",痩せた微生物群"と比較して,細菌のないマウスの体脂肪が増大させた.
- 細菌分裂 (BacteroidetesとFirmicutes) の相対的な豊富さの特定の変化は,肥満と関連しています.
結論:
- 腸内微生物群は,肥満の病理生理学において重要な役割を果たしています.
- 肥満マイクロバイオームのエネルギー収集能力の向上は,肥満に寄与する重要な要因です.
- 腸内微生物群の構成は,宿主のエネルギーバランスと体脂肪の蓄積に影響を与える伝染性の要因です.
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