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perfluoroalkyl 和 polyfluoroalkyl 物质与血小板糖蛋白 Ibα 相互作用,并加剧血栓形成
Ming Liu1, Weiqing Zhao2, Chaoyu Ma2
1School of Medicine and Pharmacy, Ocean University of China, and the Laboratory of Marine Drugs, Chinese Ministry of Education, Qingdao, Shandong 266003, China; Laboratory for Marine Drugs and Bioproducts, Qingdao Marine Science and Technology Center, Qingdao, Shandong 266237, China.
perfluoroalkyl 和 polyfluoroalkyl 物质 (PFAS) 导致血小板激活,增加危险血栓和心血管疾病 (CVD) 的风险. 阻止GPIbα可能会防止这些有害影响.
科学领域:
- 环境健康 环境健康
- 毒理学 毒理学 毒理学
- 血液学 血液学 血液学
背景情况:
- perfluoroalkyl 和 polyfluoroalkyl 物质 (PFAS) 是广泛存在的环境污染物.
- 暴露于PFAS与不良健康结果有关,包括心血管疾病 (CVD).
- 血小板激活和血栓形成是心血管疾病发病的关键因素,但PFAS对血小板的直接影响尚不清楚.
研究的目的:
- 调查PFAS对血小板激活的直接影响和潜在机制.
- 确定血小板GPIbα在PFAS诱导的血栓事件中的作用.
- 探索针对PFAS介导的血栓形成的潜在治疗策略.
主要方法:
- 在体外研究检查PFAS与血小板GPIbα和下游信号通路的相互作用.
- 评估血小板聚合,调动和整合素激活.
- 使用Gpibα缺乏的小鼠和暴露于PFAS的小鼠进行体内研究,以评估血栓形成和中风风险.
- 对中性粒细胞细胞外陷 (NET) 形成的分析.
主要成果:
- PFAS与血小板GPIbα接触,触发细胞内信号,释放,激活Akt和激活αIIbβ3整合素.
- 在剪切应力下,PFAS增强了GPIbα介导的血小板扩散和血栓形成.
- 暴露于PFAS会增加小鼠中血栓生长和缺血性中风的风险.
- PFAS原型血小板促进了依赖GPIbα的NET形成.
结论:
- 通过GPIbα,PFAS直接激活血小板,导致聚合和促血凝活动.
- 暴露于PFAS与血栓性心血管疾病和缺血性中风有因果关系.
- 针对GPIbα及其下游途径提供了一种潜在的策略,以减轻PFAS诱导的血栓形成.
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