コリン作用の基礎前頭部栄養回路が食欲抑制を調節する
Alexander M Herman1, Joshua Ortiz-Guzman1, Mikhail Kochukov2
1Program in Developmental Biology, Baylor College of Medicine, Houston, Texas 77030, USA.
Nature
|October 5, 2016
まとめ
基礎前脳のコレリン神経は 食物摂取と体重に大きな影響を与えます この信号を遮断すると 肥満になり 信号を遮断すると 食料の消費が減り 栄養のコントロールが 重要になるのです
科学分野:
- 神経科学
- メタボリック障害
- 食欲の調節
背景:
- 異常な食事摂取は肥満や代謝障害を引き起こす.
- 視床下部が 主な脳の中心で 体重の安定を制御します
- 栄養における非正規の中枢神経系信号は,ほとんど特徴づけられていない.
研究 の 目的:
- 基礎前脳のホルモン神経細胞が 食事の行動と体重を制御する役割を調査する.
- コリナージックシグナルが食欲抑制に影響を与えるメカニズムを解明する.
主な方法:
- 基礎前脳のホルモン伝達を研究するために マウスモデルを使用した.
- 食物摂取と体重への影響を観察するために コリン反応信号を操作した.
- 視床下部のコリナージック回路を調査した.
主要な成果:
- マウスの前頭部のコレリン神経は 食物摂取と体重に 強い影響を及ぼします
- コリン信号の障害は食物の摂取量を増やし,重度の肥満を引き起こした.
- 塩素反応信号の強化により,食物の消費量が減少した.
- コリナージック回路は,下垂体標的の食欲抑制を調節することが判明しました.
結論:
- コリン基底前脳は,食事行動の主要な調節センターとして特定されています.
- 食欲の調節と肥満の予防に 重要な役割を果たします
- この研究は 食物摂取と体重の恒常性を制御する 新しい神経経路を明らかにしています
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