血氧化低密度脂蛋白去除对动脉样硬化的影响
Yasushi Ishigaki1, Hideki Katagiri, Junhong Gao
1Division of Molecular Metabolism and Diabetes, Tohoku University Graduate School of Medicine, Sendai, Japan.
Circulation
|June 19, 2008
概括
向氧化LDL (oxLDL) 清除,而不仅仅是总LDL胆固醇,显著抑制动脉样硬化进展. 这项研究表明,在肝脏中增强oxLDL受体LOX-1可以预防小鼠的动脉疾病.
科学领域:
- 心血管研究研究心血管研究
- 动脉样硬化是一种动脉样硬化.
- 脂质代谢 脂质代谢是什么
背景情况:
- 立方体治疗降低了LDL胆固醇,减少了心血管疾病的死亡率.
- 氧化LDL (oxLDL) 与动脉样硬化的发展有关.
- 仅仅减少oxLDL对动脉动脉生成的具体影响尚未完全理解.
研究的目的:
- 调查oxLDL.DL的动脉动脉作用.
- 为了确定向oxLDL是否直接影响动脉样硬化.
- 探索肝脏中类似莱克的oxLDL受体1 (LOX-1) 表达在预防动脉样硬化的有效性.
主要方法:
- 在阿波利波蛋白E缺乏的小鼠中,阿诺病毒介导的LOX-1肝部表达.
- 通过Oil Red O染色来评估动脉样硬化病变的进展.
- 测量血LDL氧化物,单细胞化疗蛋白-1,脂质过氧化物和阿迪波内克丁水平.
主要成果:
- 肝脏LOX-1表达成功地增加了肝脏中的oxLDL吸收.
- 在表达LOX-1的小鼠中,血oxLDL水平短暂显著降低.
- 与对照组相比,LOX-1小鼠的动脉样硬化病变进展几乎完全受到抑制.
- 系统性氧化应激标志物下降,由减少的单细胞化疗性蛋白-1和脂质过氧化物以及增加的氨酸蛋白 (adiponectin) 表示.
结论:
- 氧化LDL在驱动动动脉硬化方面发挥着重要作用.
- 向oxLDL去除,特别是通过肝脏LOX-1是有前途的治疗策略.
- 减少oxLDL可以防止动脉样硬化进展,即使持续高的LDL胆固醇.
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