食中の砂糖によって引き起こされる微生物群の不均衡は,代謝症候群からの免疫媒介による保護を妨げます
Yoshinaga Kawano1, Madeline Edwards1, Yiming Huang2
1Department of Microbiology and Immunology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.
Cell
|August 30, 2022
まとめ
腸内微生物は Th17細胞を誘発することで 代謝症候群から身を守ります 食事中の砂糖は これらの保護微生物を枯渇させ 病気のリスクを高めますが 砂糖を除去すると 保護が回復します
科学分野:
- 免疫学
- 微生物学
- 代謝障害
背景:
- 代謝症候群における腸内微生物の役割は完全に理解されていません.
- メタボリックシンドローム,肥満,糖尿病前症候群は重要な健康上の問題です.
- 免疫系と腸内微生物の相互作用は 代謝の健康に不可欠です
研究 の 目的:
- 腸内微生物がメタボリックシンドロームを 制御する方法を調べるため
- Th17細胞が代謝疾患に対する保護を媒介する役割を特定する.
- ダイエット,特に砂糖が腸内微生物群と免疫反応に与える影響を明らかにする.
主な方法:
- 脂肪と糖分を多く含んだ食物を マウスに与えました
- 腸内微生物群の構成とTh17細胞群の変化を分析した.
- 脂質吸収の調節におけるIL-17の役割を調査した.
- 代謝パラメータと微生物群に対する糖分除去の影響を調べた.
主要な成果:
- 腸内微生物群は,共生性特異的Th17細胞を誘発することによって,肥満と代謝症候群から保護します.
- 高脂肪,高糖の食事は Th17誘発微生物を枯渇させ 代謝疾患を促進します
- Th17細胞を回復させることで 病気の進行を逆転させました
- 砂糖の摂取は,部分的にFaecalibaculum rodentiumの増殖によって,保護性Th17細胞の喪失を媒介する.
- Th17依存のメタボリックシンドロームを予防した.
結論:
- 腸内微生物群によって誘発されるコンメンサル特異のTh17細胞は,代謝症候群の予防に極めて重要です.
- 食中の砂糖は,この保護機構を乱し,代謝疾患の病原化に寄与する.
- ダイエット,腸内微生物群,腸内免疫の相互作用は,代謝健康の重要な調節因子です.
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