手术后的压力通过HDL蛋白质组的炎症重塑和受损的逆胆固醇运输加速动脉样硬化
Dominique M Boucher1,2, Victoria Lorant1,2, Valerie Rochon1,2
1Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, ON, Canada.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 30, 2026
概括
手术性炎症会损害逆胆固醇运输 (RCT),并促进泡细胞亡,增加心血管风险. 恢复阿波利波蛋白A1 (Apoa1) 可能会减轻这些影响.
科学领域:
- 心血管生物学 心血管生物学
- 炎症研究 炎症研究
- 动脉样硬化是一种动脉样硬化.
背景情况:
- 数以百万计的人在手术后面临心血管并发症,与斑块不稳定有关.
- 反向胆固醇运输 (RCT),由HDL和Apoa1介导,具有保护作用,但其对手术炎症的反应尚不清楚.
研究的目的:
- 研究手术炎症对RCT和动脉样硬化斑块稳定性的影响.
- 探索阿波利波蛋白A1 (Apoa1) 恢复在缓解手术炎症不良影响方面的潜力.
主要方法:
- 在接受西方饮食的ApoE-/-小鼠中使用了腹部腹腔切除模型.
- 采用了一种新的双标签,双细胞类型的体内RCT模型来评估巨细胞和VSMCRCT.
- 在手术后分析患者血中的胆固醇排泄能力.
主要成果:
- 手术急性损害了RCT和胆固醇流量,改变了HDL组成 (增加SAA1/2,减少Apoa1).
- 斑块显示脂质增加,PLIN2和亡,特别是PLIN2hi泡细胞.
- 大细胞RCT在手术后显著受损,而VSMCRCT不受影响;患者的血显示出流量能力降低.
结论:
- 手术性炎症迅速破坏HDL功能和RCT,促进泡细胞亡和斑块不稳定.
- 在小鼠中,rh-APOA1治疗部分恢复了RCT,并减少了斑块脂质积累.
- 准Apoa1可能是一种降低术后心血管风险的策略.
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