実験的な心不全におけるナトリウレチンペプチドシステムの最大化:皮下脳ナトリウレチンペプチドと急性バソペプチダゼ抑制
Horng H Chen1, John G Lainchbury, Gail J Harty
1Cardiorenal Research Laboratory, Division of Cardiovascular Diseases and Department of Physiology, Mayo Clinic and Foundation, Rochester, Minn 55905, USA. chen.horng@mayo.edu
Circulation
|February 28, 2002
まとめ
急性バソペプチダース阻害剤 (VPI) 投与は,実験的閉塞性心不全 (CHF) の脳ナトリウレチンペプチド (BNP) の効果を強化する. VPIとBNPの組み合わせは,CHF患者における心肺神経機能の改善のための新しい治療戦略を提供します.
科学分野:
- 心血管研究 循環器科の研究
- 薬理学 薬理学とは
- ネフロロジーはネフロロジーを用います.
背景:
- 閉塞性心不全 (CHF) は,有益な心内特性を持つ心 natriuretic ペプチド (NP) の上昇によって特徴付けられています.
- 慢性皮下 (SQ) 脳ナトリウレチンペプチド (BNP) の投与は,実験的なCHFにおける心経機能を改善する.
- バソペプチダース阻害剤 (VPI) は,中性エンドペプチダース (NEP) とACEを同時に阻害する.
研究 の 目的:
- 急性VPI投与がSQ BNPの心肺神経作用を実験的なCHFで強化するかどうかを調査する.
- VPIとBNPの結合した効果を評価するために,心肺および体内への反応.
主な方法:
- 静脈ペースによって誘発されたCHFを麻酔した犬を研究した.
- グループは,急性VPIのみ,低用量SQ BNPのみ,高用量SQ BNPのみ,またはVPIと低用量SQ BNP. BNP. を投与した.
- 心臓と体内のパラメータを測定した.
主要な成果:
- VPIと低用量SQ BNPは,VPIまたは低用量BNP単独と比較して,血BNP濃度を大幅に増加させた.
- VPIとBNPを併用して投与すると,尿経BNPとナトリウム分泌量が最も高くなります.
- 併用療法により,球の濾過率,心臓の出力,心臓の充填圧の減少が最大限に増加しました.
結論:
- 急性VPI投与は,実験的なCHFにおけるSQ BNPの心肺内効果を強化する.
- タンパク質療法とBNPおよびバソペプチド抑制を組み合わせることで,CHF治療の新たな戦略を提示します.
- このアプローチは,CHFの管理におけるナトリウレチンペプチドシステムの治療上の利点を最大化します.
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