セクレチン活性化ブラウン脂肪は,満腹感を誘導するPrandial熱生成を媒介する
Yongguo Li1, Katharina Schnabl2, Sarah-Madeleine Gabler2
1Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany; EKFZ - Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany.
Cell
|November 20, 2018
まとめ
腸内ホルモンの分泌は,食事後に茶色脂肪 (BAT) の熱生成を活性化し,飽和を促します. この発見により 食欲とエネルギー消費を制御する 新しい腸-脳軸が明らかになりました
科学分野:
- 代謝と内分泌学
- 神経科学
- 胃腸内科
背景:
- 茶色脂肪 (BAT) の活性化における食事誘発熱生成の役割とその生理学的意義は不明である.
- 栄養素の摂取とエネルギー消費を結びつける 分子経路を理解することは 代謝の健康にとって極めて重要です
研究 の 目的:
- 食事に関連した茶色の脂肪の熱生成の分子媒介者を特定する.
- 飽和とエネルギーバランスを調節するこのプロセスの機能的意義を明らかにする.
主な方法:
- プレンジアル発熱に関与する重要な腸内ホルモンであるセクレチンの特定.
- 茶色脂肪細胞に対するセクレチンの作用機構と脳への影響の調査
- 食事による肥満マウスのエネルギー消費に対するセクレチンの影響の評価
- ヒトの食後の発熱とセクレチン濃度とBATのグルコース摂取を相関させる臨床試験
主要な成果:
- セクレチンは,食後のエネルギー消費を媒介する茶色の脂肪の熱生成の非同情活性化剤として特定されました.
- セクレチンは,セクレチン受容体を通して茶色脂肪細胞を活性化し,腸-セクレチン-BAT-脳軸を通して脂質分解を刺激し,飽和を促進します.
- 慢性的なセクレチン注入は肥満マウスのエネルギー消費を増加させ,ヒト試験ではセクレチン濃度,熱生成,BATグルコース摂取との相関が示された.
結論:
- 腸内ホルモンの分泌は 食事に関連した茶色の脂肪の 発熱と飽和に重要な役割を果たします
- この研究は食欲制御に生理学的意味を持つ新しい腸分泌-BAT-脳軸を確立しています.
- 飽和感における役割のために,肥満管理のための重要な治療目標として浮上しています.
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