プラバスタチンはマーファンの大動脈の膨張を減少させます.
Darren McLoughlin1, Jonathan McGuinness, John Byrne
1Department of Surgery, Royal College of Surgeons in Ireland, Dublin, Ireland.
Circulation
|September 14, 2011
まとめ
スタチンとロサルタンは,エラスティンを保存し,血管の滑らかな筋肉細胞のタンパク質合成を減少させることで,マーファン症候群のマウスの大動脈の根の拡張を効果的に軽減します.
科学分野:
- 心血管研究 循環器科の研究
- 遺伝学と病気について
- 薬理学 薬理学とは
背景:
- マルファン症候群は,マトリックス要素の不均衡と過剰なTGF-βシグナル伝達による致命的な大動脈根の膨張によって特徴付けられます.
- この不均衡は,大動脈の中央層におけるメタルプロテインーゼの活性を増大させます.
研究 の 目的:
- マルファン症候群のマウスモデルにおける大動脈根の拡張を弱めるスタチンの有効性を調査する.
- スタチンの効果を,別の提案された予防剤であるロサルタンと比較するために.
主な方法:
- マルファンマウス (C1039Gフィブリリン-1変異) は6週からプラバスタチンまたはロサルタンで治療されました.
- 大動脈根の直径,厚さ,エラスティン容量,心臓機能 (dp/dtmax),超構造を分析した.
主要な成果:
- プラバスタチンとロサルタンは,未治療対照群と比較して,マーファンマウスの大動脈根の拡張を著しく減少させた.
- 両薬とも,中間層のエラスティン容量を保ち,滑らかな筋肉細胞の粗なエンドプラズマ網膜を減少させ,タンパク質合成の低下を示した.
結論:
- スタチンは,マーファン症候群のマウスモデルにおける大動脈根の拡張を緩和する上でロサルタンと同等の有効性を示しています.
- スタチンは,血管の滑らかな筋肉細胞の過剰なタンパク質生産を減らすことによって,臨床的に有用でよく耐える長期的な治療の選択肢を提供することができます.
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