人类对低密度脂蛋白氧化和冠状动脉样硬化的敏感性
J Regnström1, J Nilsson, P Tornvall
1Department of Medicine, Karolinska Hospital, Karolinska Institute, Stockholm, Sweden.
Lancet (London, England)
|May 16, 1992
概括
这项研究发现,低密度脂蛋白 (LDL) 对氧化敏感性与男性冠状动脉样硬化的严重程度有关. 富含甘油三酸的LDL的人可能面临更高的早发心血管疾病的风险.
科学领域:
- 心血管科学 心血管科学
- 脂质代谢 脂质代谢是什么
- 氧化压力是一种氧化压力.
背景情况:
- 动物研究表明,脂质氧化在动脉样硬化发展中起着作用.
- 低密度脂蛋白 (LDL) 氧化抵抗与人类冠状动脉样硬化之间的关系需要进一步研究.
研究的目的:
- 检查男性心肌梗塞幸存者体内LDL氧化抵抗与冠状动脉样硬化的严重程度之间的关联.
- 确定LDL抗氧化能力是否是冠状动脉样硬化严重程度的独立预测因素.
主要方法:
- 35名年轻男性心肌梗塞幸存者接受了冠状动脉血管学.
- 从血中分离低密度脂蛋白 (LDL),使用密度梯度超离心法.
- 实验室内LDL对氧化的敏感性是通过对联二烯形成的滞后阶段来测量的.
主要成果:
- 在LDL氧化滞后阶段和冠状动脉样硬化的程度之间观察到一个反向相关性 (r = -0.45,p < 0.02).
- 多变量分析显示,LDL氧化滞后阶段和LDL胆固醇度都与动脉样硬化严重程度独立相关.
- LDL氧化滞后阶段也与LDL甘油三含量相反相关 (r = -0.55,p < 0.002).
结论:
- 对LDL氧化的敏感性与冠状动脉样硬化的严重程度有关.
- 脂质氧化可能会促进早发冠状动脉样硬化.
- 富含甘油三的LDL的人可能患心血管疾病的风险增加.
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