心不全におけるエンドセリン-1の上昇と,姿勢の変化に対する正常な応答の喪失
D J Stewart1, P Cernacek, K B Costello
1McGill Unit for the Prevention of Cardiovascular Disease, McGill University Department of Medicine, Royal Victoria Hospital, Montreal, Quebec, Canada.
Circulation
|February 1, 1992
まとめ
エンドオセリン-1は,血動力学的ストレスに対するニューロ・ユーモラル補償の役割を果たします. 正常な被験者では,心不全患者とは異なり,垂直傾きで血エンドセリン-1が増加しました.
科学分野:
- 心血管生理学 心血管の生理学
- エンドクリノロジー エンドクリノロジー
- ネフロロジーは腎臓科
背景:
- エンドセリン-1は,内皮から派生した強力な血管圧縮ペプチドです.
- ヘモダイナミック・ストレスのニューロ・ユーモラル補償におけるその役割は完全に理解されていません.
研究 の 目的:
- ニューロ・ユーモラル補償に対するエンドセリン-1の貢献を調査する.
- 姿勢の変化中に,正常な被験者と重度の閉塞性心不全の患者のエンドセリン-1レベルを比較する.
主な方法:
- 放射線免疫測定を用いて,プラズマ内のエンドセリン-1レベルを測定した実験は,9人の正常なボランティアと6人の心不全患者で実施した.
- 静止状態の血液サンプルと30分間の60度垂直傾きで採取した血液サンプル.
- 他のニューロ・ユーモラルメディエーターとエンドセリン-1応答を比較した.
主要な成果:
- 正常な被験者は,ドーパミンと同様に,垂直傾斜の際のプラズマエンドセリン-1の二相増加を示しました.
- 心不全の患者は,基礎エンドセリン-1濃度が著しく上昇し,傾きに対する反応が鈍化した.
- エンドセリン"の反応パターンは,他の静脈縮媒介体の反応パターンを反映した.
結論:
- 心不全および姿勢の変化におけるプラズマエンドセリン-1の変化は,他の神経幽モラル補償メディエーターに似ています.
- 傾き中のエンドセリン-1の早期上昇は,血動力学的ストレス補償におけるその役割を示唆しています.
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