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在纤维状斑块微系统模型中,生物膜通过巨诱导的炎症反应加剧动脉生成
Yatian Fu1, Yanlin Deng2, Jing Zhang2
1Department of Biomedical Engineering, City University of Hong Kong; Hong Kong Center for Cerebro-Cardiovascular Health Engineering (COCHE).
Acta biomaterialia
|June 29, 2023
概括
细菌生物膜促进炎症,增加纤维状斑块破裂和血栓形成的风险. 这项研究开发了一个模型,以显示生物膜如何通过改变巨细胞的功能和减少纤维盖的完整性来破坏斑块的稳定性.
科学领域:
- 心血管生物学 心血管生物学
- 微生物学 微生物学
- 生物材料科学 生物材料科学
背景情况:
- 微生物,特别是细菌生物膜,越来越多地与动脉样硬化有关.
- 生物膜对纤维状斑块破裂和不稳定性的特定影响仍然不太清楚.
研究的目的:
- 开发一个全面的模型来研究生物膜诱导炎症 (FP-I) 下纤维状斑块的进展.
- 阐明生物膜有助于斑块损伤和不稳定性的机制.
主要方法:
- 为FPI开发基于微系统的模型.
- 对生物膜特异性生物标志物的评估 (algD,pelA,pslB).
- 对巨细胞两极分化 (M1/M2标记物),脂质滴积累,泡细胞形成,原I表达和亡标记物 (Caspase-3) 的分析.
主要成果:
- 通过高表达生物膜生物标志物来确认生物膜的存在.
- 生物膜促进了M1巨的两极分化 (增加CD80) 和泡细胞的形成 (增加脂质滴).
- 生物膜显著降低了I型原蛋白的产生,并增加了肌纤维细胞的亡,损害了纤维帽的完整性.
结论:
- 生物膜诱导的炎症加剧纤维状斑块的损伤,增加不稳定性和血栓形成的风险.
- 开发的FP-I模型为机械研究和对生物膜相关动脉样硬化联合治疗的临床前评估提供了一个平台.
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