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慢性心不全におけるエンドトキシンと免疫活性化:前向きなコホート研究
1Cardiac Medicine, National Heart and Lung Institute, Imperial College School of Medicine, London, UK.
Lancet (London, England)
|June 8, 1999
まとめ
慢性心不全の患者でエデマがある場合,より高いエンドトキシン濃度が免疫活性化を示す. 利尿剤治療は,エンドトキシンを正常化させることができ,心不全の悪化時に免疫反応を誘発することを示唆しています.
科学分野:
- 心臓病学 心臓病学
- 免疫学 免疫学とは
- 胃腸内科 胃腸内科
背景:
- 慢性心不全 (CHF) の免疫活性化は,エンドトキシン (リポポリサッカリド) 作用と関連している可能性があります.
- 調査された仮説: 腸の透過性の変化,細菌の転位,CHFの患者でエンドトキシミアの増加.
研究 の 目的:
- 腸の浸透性,細菌の転位,内毒性,およびCHF患者における免疫活性化との関連を調査する.
- エデマ解消と利尿剤治療がエンドトキシンとサイトカインレベルに与える影響を評価する.
主な方法:
- 結腸炎の患者20人を結腸炎の患者20人を結腸炎の患者20人を結腸炎の患者20人を結腸炎の患者20人を結腸炎の患者14人を健康な対照群と比較した.
- エンドトキセミア,炎症,免疫活性化の生化学的マーカーを測定した.
- エデマの解消後に10人の患者と,持続的なエデマフリー状態の後に5人の患者を再調査した.
主要な成果:
- 安定したCHF患者および対照群と比較して,CHF患者でエデマのある患者では,より高い平均エンドトキシン濃度.
- 肥満患者の場合,サイトカイン濃度が上昇した.
- 利尿剤治療はエンドトキシンレベルを低下させましたが,サイトカインは高いままでした. 持続的な腫の解消後にエンドトキシンレベルは変化しませんでした.
結論:
- 急性エデマ症の悪化時に,高濃度のエンドトキシンとサイトカインがCHF患者の体内に存在します.
- 濃縮した利尿剤治療は,エンドトキシン濃度を正常化する.
- エンドトキシンは,エデマエピソード中にCHF患者の免疫活性化を誘発する可能性があります.
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