高密度脂蛋白中和了C反应性蛋白的炎症活动
Carol Wadham1, Nathaniel Albanese, Jane Roberts
1Division of Human Immunology, Hanson Institute, Institute of Medical and Veterinary Science, Adelaide, South Australia, Australia.
Circulation
|April 14, 2004
概括
高密度脂蛋白 (HDL) 通过氧化脂通过中和其对内皮细胞的促炎作用来防止C反应蛋白 (CRP) 诱导的炎症.
科学领域:
- 心血管生物学 心血管生物学
- 炎症研究 炎症研究
- 脂质代谢 脂质代谢是什么
背景情况:
- C-反应蛋白 (CRP) 是动脉样硬化的一个标志物,有直接的促炎作用.
- 假设有一种自然因素可以中和CRP的影响,但尚未确定.
- 在内皮细胞中,CRP诱导炎症粘附分子.
研究的目的:
- 研究高密度脂蛋白 (HDL) 对CRP诱导的炎症的潜在抑制作用.
- 阐明HDL可能抵消CRP的促炎作用的机制.
主要方法:
- 在人静脉内皮细胞 (HUVECs) 中评估了CRP诱导的炎症粘附分子的上调.
- 评估了原生HDL和复制HDL (rHDL) 对CRP诱导的粘附分子表达的抑制作用.
- 确定了HDL中负责抑制作用的活性成分.
主要成果:
- 在HUVEC中,CRP在蛋白质和mRNA水平上显著上调炎性粘附分子.
- 无论是原生还是复制的HDL,完全抑制了CRP诱导的粘附分子表达.
- 重建的HDL (rHDL) 比原生HDL强100倍,氧化脂被确定为主要活性成分.
结论:
- 高脂有效地阻止了内皮细胞中CRP诱导的炎症粘附分子的上调.
- 抑制机制涉及HDL的氧化脂成分.
- 高血脂代表了缓解动脉样硬化中CRP驱动的炎症的潜在治疗标.
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