心血管および心肺制御のための分子的に定義された回路
Avin Veerakumar1,2,3, Andrea R Yung1, Yin Liu1
1Department of Biochemistry, Wall Center for Pulmonary Vascular Disease, and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA.
Nature
|June 1, 2022
まとめ
研究者達は 心拍数と呼吸を制御する 2種類のパラシンパティックニューロンを発見しました あるタイプは心臓のみを調節し,別のタイプは心臓と肺の両方の機能を調整します.
科学分野:
- 神経科学
- 心血管生物学
- 自律神経系の研究
背景:
- 交感神経と副交感神経を構成する自律神経系は 内臓の機能を調節する.
- これらのシステム内のニューロンと回路の特定の分子および機能的多様性は,特に心臓制御については完全に理解されていません.
研究 の 目的:
- 心臓のパラシンパシー制御回路を 解剖する
- 心臓を刺激する脳幹核アンビギュア (Amb) の内にある異なるニューロンのサブタイプを特定し,特徴づけること.
主な方法:
- 逆行神経トレース
- 単細胞RNAシーケンシング
- オプトジェネティクス
- 生理学的実験
主要な成果:
- 曖昧な心血管 (ACV) と曖昧な心肺 (ACP) の2つの異なる副型の神経細胞が核曖昧性で特定されました.
- ACVニューロン (約. 心拍数と心房回路伝導をバーレセプター反射で調節する.
- ACPニューロン (約. 心臓と肺のパラシンパティック・ギャングリオンニューロンを刺激し,ダイブ・レフレクスを媒介する.
結論:
- 心臓のパラシンパティック制御には,2つの並列回路が含まれます.一つは心臓特異機能 (ACV) であり,もう一つは心臓と肺機能 (ACP) を調整します.
- この発見は心臓呼吸器系の神経制御について 新たな洞察をもたらします
- この発見は心臓病や肺疾患の治療や 臓器の協調回路の理解に 影響を及ぼします
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