诱导的聚合会加剧中性粒细胞外细胞陷的形成,并导致血管炎症
Qiying Nong1, Yanjun Wu2, Suhui Liu3
1Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangzhou 510300, China.
Ecotoxicology and environmental safety
|December 25, 2024
概括
暴露于会通过影响中性粒细胞及其在形成中性粒细胞外细胞陷 (NETs) 中的作用而损害心血管健康. 抑制actin聚合降低了NETs,减轻了引起的血管炎症和高血压.
科学领域:
- 毒理学 毒理学 毒理学
- 心血管生物学 心血管生物学
- 免疫学 免疫学 免疫学
背景情况:
- (Pb) 暴露是已知的心血管疾病风险因素.
- 中性粒细胞参与Pb诱导的心血管损伤已经确立,但机制尚不清楚.
- 了解中性粒细胞中Pb的点对于阐明心血管损伤途径至关重要.
研究的目的:
- 为了确定中性粒细胞内的Pb结合标.
- 研究这些点在中性粒细胞外细胞陷 (NET) 形成中的作用.
- 在体内确定Pb诱导的NET形成对血管炎症和心血管损伤的影响.
主要方法:
- 在中性粒细胞中研究了Pb结合标.
- 评估了Pb对乙烯酸聚合和NET形成标记物的作用 (髓氧化酶,中性粒细胞弹性酶,素基因组H3).
- 利用小鼠模型研究Pb暴露对血压,血管炎症和大动脉血流的影响,将这些与NET水平相关联.
主要成果:
- 发现Pb在中性粒细胞中与β-actin结合,影响了NET的形成.
- 抑制动氨酸聚合可显著降低NET释放.
- 在小鼠中,Pb暴露加剧了高血压和血管炎症,与增加的NET形成有关.
- 通过抑制actin聚合,通过减少NETs来改善Pb诱导的心血管损伤.
结论:
- Pb与中性粒细胞β-actin结合,促进NET的形成,并导致心血管损伤.
- 向actin聚合是一种潜在的治疗策略,可以减轻Pb诱导的心血管损伤.
- 这项研究阐明了一种新的机制,将暴露,中性粒细胞功能和心血管疾病的进展联系起来.
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