低密度リポプロテインの酸化と冠動脈動脈硬化に対する感受性
J Regnström1, J Nilsson, P Tornvall
1Department of Medicine, Karolinska Hospital, Karolinska Institute, Stockholm, Sweden.
Lancet (London, England)
|May 16, 1992
まとめ
この研究では,低密度リポプロテイン (LDL) の酸化感受性が,男性における冠動脈動脈硬化症の重症度に関連していることが判明しました. トリグリセリドで濃縮されたLDLを有する個人は,早発性心血管疾患のリスクが高い可能性があります.
科学分野:
- 心血管科学 心血管科学
- 脂質代謝についてです.
- オキシダティブ・ストレスは,
背景:
- 動物の研究は,脂質酸化が動脈硬化症の発達に役割を果たすことを示唆しています.
- 低密度脂質タンパク質 (LDL) の酸化抵抗とヒトの冠動脈動脈硬化症の関係については,さらなる調査が必要である.
研究 の 目的:
- インビトロでのLDL酸化抵抗と,男性心筋梗塞の生存者における冠動脈動脈硬化症の重症度との関連を調べる.
- 酸化に抵抗するLDLの能力が,冠動脈動脈硬化症の重度の独立した予測要因であるかどうかを判断する.
主な方法:
- 35人の若い男性心筋梗塞の生存者は,冠動脈血管撮影を受けた.
- 低密度脂質タンパク質 (LDL) は,密度グラデーション超離心法を使用して血から分離されました.
- 酸化に対するLDLのインビトロ感受性は,結合ダイエンの形成の遅延相によって測定されました.
主要な成果:
- LDL酸化遅延期と冠動脈動脈硬化症の程度 (r = -0.45,p < 0.02) の間には逆相関が観察されました.
- 多変量分析により,LDL酸化遅延相とLDLコレステロール濃度の両方が,動脈硬化症の重症度と独立して相関していることが明らかになりました.
- また,LDL酸化遅延相は,LDLトリグリセリド含有量 (r = -0.55,p < 0.002) と逆関係していた.
結論:
- LDLの酸化に対する感受性は,冠動脈動脈硬化症の重症度と関連しています.
- 脂質酸化は,早発の冠動脈動脈硬化を促進する可能性があります.
- トリグリセリドに富んだLDLを有する個人は,心血管疾患のリスクが高くなる可能性があります.
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