アポリポプロテインA-IIは,将来の冠動脈疾患のリスクと逆に関連しています
Rakesh S Birjmohun1, Geesje M Dallinga-Thie, Jan Albert Kuivenhoven
1Academic Medical Center, Department of Vascular Medicine, 1100 DD, Amsterdam, The Netherlands.
Circulation
|October 10, 2007
まとめ
アポリポプロテインA-II (apoA-II) は,健康な個体において冠動脈疾患 (CAD) のリスクの低下と関連しています. より高いアポA-IIレベルは,CADを発症するリスクが著しく低下するとの関連がありました.
科学分野:
- 心血管科学 心血管科学
- 脂質代謝についてです.
- 動脈硬化症の研究研究
背景:
- アポリポプロテインA-I (apoA-I) の血管保護作用は確立されています.
- アポリポプロテインA-II (apoA-II) は,プロアテロゲン性を持つことを示唆するいくつかの研究があるため,論争の的視野から捉えられてきました.
研究 の 目的:
- 血清中のアポA-IIとアポA-Iのレベルと将来の冠動脈疾患 (CAD) のリスクとの関連性を調査する.
- アテロゲネシスにおけるApoA-IIの役割を明らかにする.
主な方法:
- 将来のEPIC-ノルフォークコホートの中で,ネスドケース・コントロール研究が行われました.
- 912例のインシデントCAD症例と1635匹のマッチングコントロール (45-79歳) を分析した.
- 条件付きロジスティック回帰を用いて,アポA-IIレベルとCADリスクとの関係を評価し,様々な心血管疾患のリスク要因を調整した.
主要な成果:
- 血清のapoA-II濃度は,対照群と比較して,CAD症例において有意に低かった.
- ApoA-IIは,CADリスクと逆に関連しており,最高四分の一の個人は,完全な調整 (OR 0.48) 後に52%のリスク低下を示しました.
- この関連性は,apoA-IレベルとHDL粒子特性を調整した後でも有意のままでした.
結論:
- ApoA-IIは,明らかに健康な個体において,将来のCADのリスクの低下と関連しています.
- これらの発見は,apoA-IIが直接的な抗アテロゲン効果を発揮する可能性があることを示唆しています.
- apoA-IIの潜在的プロアテロゲン作用は,再評価を正当化しています.
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