ストレスに敏感な神経回路は,12本根腺を通して腸内微生物群を変化させる
Hao Chang1, Matthew H Perkins1, Leonardo S Novaes1
1Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
Cell
|August 9, 2024
まとめ
脳について
科学分野:
- 神経科学
- 免疫学
- 微生物群の研究
背景:
- 消極的な心理状態は 腸内微生物の変化によって 免疫に影響します
- 微生物の組成に影響を与える脳と腸の正確なつながりは完全に理解されていません.
研究 の 目的:
- 脳状態と腸内微生物群のホメオスタシスとの関係を調停するブルナー腺の役割を調査する.
- ストレスに関わる神経回路や ブルナー腺 免疫機能の解明
主な方法:
- ヴァガス神経の刺激とブランナー腺の細胞特異的切除が臨床前モデルで実施された.
- 神経解剖学的技術を用いた 神経回路のマッピング
- 腸内微生物の構成と宿主の免疫反応の評価
主要な成果:
- ブラウンナー腺は 迷走神経の刺激に ラクトバチルスの濃縮を媒介する.
- 腺切除は乳球菌を減少させ,感染症の感受性を高めました.
- 中枢桃体からブランナー腺までの ヴァーガル回路が特定されました
- 慢性的なストレスは この回路を損ねて 腺剥離効果を模倣します
- 中枢 amigdala または vagal ニューロンの刺激により 微生物群と免疫が回復しました
結論:
- ブルーナー腺は ストレスに敏感な脳回路と 腸内細菌のホメオスタシスを つなぐ重要なインターフェースとして機能します
- この経路は 心理状態を 防御と免疫に結びつける 重要な脳と体のメカニズムを表しています
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