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イルベサルタン (アムロディピンではなく) は,糖尿病に関連した動脈硬化症を抑制します
Riccardo Candido1, Terri J Allen, Markus Lassila
1Vascular Division, Baker Heart Research Institute, PO Box 6492, Melbourne 8008, Victoria, Australia.
Circulation
|March 17, 2004
まとめ
アンジオテンシンII亜型1受容体阻害は,アーベサルタンによるが,アムロディピンによるではない,糖尿病マウスの動脈硬化症を減少させた. これは,レニン-アニオテンシン系が,糖尿病によって加速された血管疾患において重要な役割を果たしていることを示唆している.
科学分野:
- 心血管研究 循環器科の研究
- 薬理学 薬理学とは
- 糖尿病・メリトスとは
背景:
- 糖尿病患者の動脈硬化症を緩和するレニン-アニオテンシンシステム (RAS) 阻害の役割は,依然として議論されている.
- RAS阻害剤と他の抗高血圧剤を比較することは,糖尿病における心血管保護を理解するために重要です.
研究 の 目的:
- 糖尿病のマウスモデルにおけるイルベサタン (AT1受容体ブロッカー) とアムロディピン (カルシウムチャネル対抗剤) の抗動脈硬化作用を比較する.
- 糖尿病誘発性動脈硬化症における血管保護の基礎となる分子メカニズムを調査する.
主な方法:
- アポリポプロテインE-nullマウスは,ストレプトゾトシンを使用して糖尿病になった.
- 糖尿病のマウスは20週間,治療を受けず,イルベサルタンやアムロディピンを投与した.
- 大動脈のプラーク形成,受容体発現,細胞浸透,炎症マーカーを評価した.
主要な成果:
- 糖尿病は,大動脈のプラーク面積,複雑性,AT1受容体,PDGF-B,MCP-1,VCAM-1の発現を増加させた.
- イルベサルタンは,動脈硬化症の発達と関連する分子変化を著しく弱めた.
- アムロジピンは,比較可能な血圧低下にもかかわらず,有意な抗動脈硬化作用を示さなかった.
結論:
- AT1受容体阻害は,糖尿病に関連した動脈硬化症を効果的に改善します.
- カルシウムチャネルアンタゴニズムは,同様の血管保護を提供しなかった.
- これらの発見は,糖尿病に起因する動脈硬化症の進行における血管RASの重要な役割を強調しています.
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